TY  - JOUR
AU  - Radanović, Mirjana M.
AU  - Novaković, Slađana B.
AU  - Rodić, Marko V.
AU  - Vojinović-Ješić, Ljiljana S.
AU  - Janiak, Christoph
AU  - Leovac, Vukadin M.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11173
AB  - The structures of the first two complexes with bidentate coordination of aminoguanidine Schiff base, i.e., 2-acetylpyridine-aminoguanidine (L), are reported. The complex of the formula [Cd2Cl6(HL)2] (1) was obtained in the reaction of warm aqueous solutions of chloride salts of Cd(II), Zn(II) and the ligand, while the reaction of cadmium bromide and the ligand in the presence of deprotonating agent as well as ammonium thiocyanate resulted in the formation of the complex in which Schiff base has both the role of the ligand and the counterion, viz., [HL][Cd(HL)(NCS)2XY]·H2O (2), where X is Cl- or Br-, and Y Br- or SCN-. The complexes were characterized by IR spectroscopy, elemental analysis, conductometric measurements and single crystal X-ray diffraction. The unusual bidentate coordination of the Schiff base lead to significant changes in the geometry of this molecule (from almost planar in free form and as a tridentate ligand to twisted as a bidentate ligand). Besides, in complex 1 relatively rare bridging coordination of Cl- in octahedral Cd(II) is found, while the crystal structure of complex 2 exhibits substitutional disorder, and contains four different anions: [Cd(HL)(NCS)2Br(SCN)]- (ca. 61 %), [Cd(HL)(NCS)2Cl(SCN)]- (ca. 35 %), [Cd(HL)(NCS)2Br2]- (ca. 3 %) and [Cd(HL)(NCS)2ClBr]- (ca. 1 %).
T2  - Journal of the Serbian Chemical Society
T1  - Synthesis and structural characterization of Cd(II) complexes with 2-acetylpyridine-aminoguanidine - a novel coordination mode
VL  - 87
IS  - 11
SP  - 1259
EP  - 1272
DO  - 10.2298/JSC220613072R
ER  - 

@article{
author = "Radanović, Mirjana M. and Novaković, Slađana B. and Rodić, Marko V. and Vojinović-Ješić, Ljiljana S. and Janiak, Christoph and Leovac, Vukadin M.",
year = "2022",
abstract = "The structures of the first two complexes with bidentate coordination of aminoguanidine Schiff base, i.e., 2-acetylpyridine-aminoguanidine (L), are reported. The complex of the formula [Cd2Cl6(HL)2] (1) was obtained in the reaction of warm aqueous solutions of chloride salts of Cd(II), Zn(II) and the ligand, while the reaction of cadmium bromide and the ligand in the presence of deprotonating agent as well as ammonium thiocyanate resulted in the formation of the complex in which Schiff base has both the role of the ligand and the counterion, viz., [HL][Cd(HL)(NCS)2XY]·H2O (2), where X is Cl- or Br-, and Y Br- or SCN-. The complexes were characterized by IR spectroscopy, elemental analysis, conductometric measurements and single crystal X-ray diffraction. The unusual bidentate coordination of the Schiff base lead to significant changes in the geometry of this molecule (from almost planar in free form and as a tridentate ligand to twisted as a bidentate ligand). Besides, in complex 1 relatively rare bridging coordination of Cl- in octahedral Cd(II) is found, while the crystal structure of complex 2 exhibits substitutional disorder, and contains four different anions: [Cd(HL)(NCS)2Br(SCN)]- (ca. 61 %), [Cd(HL)(NCS)2Cl(SCN)]- (ca. 35 %), [Cd(HL)(NCS)2Br2]- (ca. 3 %) and [Cd(HL)(NCS)2ClBr]- (ca. 1 %).",
journal = "Journal of the Serbian Chemical Society",
title = "Synthesis and structural characterization of Cd(II) complexes with 2-acetylpyridine-aminoguanidine - a novel coordination mode",
volume = "87",
number = "11",
pages = "1259-1272",
doi = "10.2298/JSC220613072R"
}

Radanović, M. M., Novaković, S. B., Rodić, M. V., Vojinović-Ješić, L. S., Janiak, C.,& Leovac, V. M.. (2022). Synthesis and structural characterization of Cd(II) complexes with 2-acetylpyridine-aminoguanidine - a novel coordination mode. in Journal of the Serbian Chemical Society, 87(11), 1259-1272.
https://doi.org/10.2298/JSC220613072R

Radanović MM, Novaković SB, Rodić MV, Vojinović-Ješić LS, Janiak C, Leovac VM. Synthesis and structural characterization of Cd(II) complexes with 2-acetylpyridine-aminoguanidine - a novel coordination mode. in Journal of the Serbian Chemical Society. 2022;87(11):1259-1272.
doi:10.2298/JSC220613072R .

Radanović, Mirjana M., Novaković, Slađana B., Rodić, Marko V., Vojinović-Ješić, Ljiljana S., Janiak, Christoph, Leovac, Vukadin M., "Synthesis and structural characterization of Cd(II) complexes with 2-acetylpyridine-aminoguanidine - a novel coordination mode" in Journal of the Serbian Chemical Society, 87, no. 11 (2022):1259-1272,
https://doi.org/10.2298/JSC220613072R . .

TY  - JOUR
AU  - Jaćimović, Željko K.
AU  - Giester, Gerald
AU  - Kosović, Milica
AU  - Bogdanović, Goran A.
AU  - Novaković, Slađana B.
AU  - Leovac, Vukadin M.
AU  - Latinović, Nedeljko
AU  - Hollo, Berta Barta
AU  - Szecsenyi, Katalin Meszaros
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1428
AB  - New nickel(II) and copper(II) coordination compounds were synthesized by the reaction of N-(benzyloxycarbonyl)-1H-pyrazole-1-carboxamidine ligand (HL) with Ni(II) and Cu(II) acetate in methanolic solution. The crystal and molecular structures of the complexes as well as those of the ligand were determined by single-crystal X-ray structure analysis. The octahedral surrounding around the metal centers in the isostructural complexes [ML2(MeOH)(2)], M = Ni(II), Cu(II), MeOH = methanol, is established by the bidentate coordination of two ligand molecules through the pyrazole nitrogen and the deprotonated nitrogen atom of the carboxamidine group along with the oxygen atoms from two MeOH molecules. Despite that the molecular structure of the complexes was determined by X-ray structure analysis, in the FT-IR spectra of the compounds the characteristic bands for MeOH were missing. By coupled TG-MS measurements, it was found that compounds during the transport and storage exchanged MeOH by water molecules. The amount of the water was calculated on the basis of thermogravimetric data. The antifungal activity of the compounds was tested against fungi Ph. viticola and B. dothidea and compared to that of a commercial fungicide. Depending on the fungi and on the structure, the compounds showed different, but somewhat lower activity than the commercial fungicide.
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Pyrazole-type complexes with Ni(II) and Cu(II) Solvent exchange reactions in coordination compounds
VL  - 127
IS  - 2
SP  - 1501
EP  - 1509
DO  - 10.1007/s10973-016-5549-9
ER  - 

@article{
author = "Jaćimović, Željko K. and Giester, Gerald and Kosović, Milica and Bogdanović, Goran A. and Novaković, Slađana B. and Leovac, Vukadin M. and Latinović, Nedeljko and Hollo, Berta Barta and Szecsenyi, Katalin Meszaros",
year = "2017",
abstract = "New nickel(II) and copper(II) coordination compounds were synthesized by the reaction of N-(benzyloxycarbonyl)-1H-pyrazole-1-carboxamidine ligand (HL) with Ni(II) and Cu(II) acetate in methanolic solution. The crystal and molecular structures of the complexes as well as those of the ligand were determined by single-crystal X-ray structure analysis. The octahedral surrounding around the metal centers in the isostructural complexes [ML2(MeOH)(2)], M = Ni(II), Cu(II), MeOH = methanol, is established by the bidentate coordination of two ligand molecules through the pyrazole nitrogen and the deprotonated nitrogen atom of the carboxamidine group along with the oxygen atoms from two MeOH molecules. Despite that the molecular structure of the complexes was determined by X-ray structure analysis, in the FT-IR spectra of the compounds the characteristic bands for MeOH were missing. By coupled TG-MS measurements, it was found that compounds during the transport and storage exchanged MeOH by water molecules. The amount of the water was calculated on the basis of thermogravimetric data. The antifungal activity of the compounds was tested against fungi Ph. viticola and B. dothidea and compared to that of a commercial fungicide. Depending on the fungi and on the structure, the compounds showed different, but somewhat lower activity than the commercial fungicide.",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Pyrazole-type complexes with Ni(II) and Cu(II) Solvent exchange reactions in coordination compounds",
volume = "127",
number = "2",
pages = "1501-1509",
doi = "10.1007/s10973-016-5549-9"
}

Jaćimović, Ž. K., Giester, G., Kosović, M., Bogdanović, G. A., Novaković, S. B., Leovac, V. M., Latinović, N., Hollo, B. B.,& Szecsenyi, K. M.. (2017). Pyrazole-type complexes with Ni(II) and Cu(II) Solvent exchange reactions in coordination compounds. in Journal of Thermal Analysis and Calorimetry, 127(2), 1501-1509.
https://doi.org/10.1007/s10973-016-5549-9

Jaćimović ŽK, Giester G, Kosović M, Bogdanović GA, Novaković SB, Leovac VM, Latinović N, Hollo BB, Szecsenyi KM. Pyrazole-type complexes with Ni(II) and Cu(II) Solvent exchange reactions in coordination compounds. in Journal of Thermal Analysis and Calorimetry. 2017;127(2):1501-1509.
doi:10.1007/s10973-016-5549-9 .

Jaćimović, Željko K., Giester, Gerald, Kosović, Milica, Bogdanović, Goran A., Novaković, Slađana B., Leovac, Vukadin M., Latinović, Nedeljko, Hollo, Berta Barta, Szecsenyi, Katalin Meszaros, "Pyrazole-type complexes with Ni(II) and Cu(II) Solvent exchange reactions in coordination compounds" in Journal of Thermal Analysis and Calorimetry, 127, no. 2 (2017):1501-1509,
https://doi.org/10.1007/s10973-016-5549-9 . .

TY  - JOUR
AU  - Hollo, B. Barta
AU  - Magyari, J.
AU  - Armaković, Sanja J.
AU  - Bogdanović, Goran A.
AU  - Rodic, M. V.
AU  - Armaković, Sanja J.
AU  - Molnar, J.
AU  - Spengler, G.
AU  - Leovac, Vukadin M.
AU  - Szecsenyi, K. Meszaros
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7115
AB  - A new hydrazone-type ligand with a five N-donor set and its coordination compounds with Co(III), Ni(II), Cu(II) and Zn(II) metal centres were synthesized. The crystal and molecular structure of the Co(III) complex was determined by X-ray structural analysis. All the compounds were characterized by elemental analysis, molar conductivity and FT-IR spectral data. The cobalt(III) compound is a neutral binuclear complex formed by coordination of two, doubly deprotonated ligand anions as bridges between the Co(III) centres. The metal centres are additionally connected by a peroxido bridge, which was observed for the first time in Co(III) complexes with similar ligands. The other coordination compounds are mononuclear complexes wherein only one doubly deprotonated ligand is coordinated to the central ion in a tetradentate fashion. The structures were theoretically investigated employing density functional theory (DFT) calculations with B3LYP exchange-correlation functional and LACV3P+(d,p) basis sets for the coordination compounds and 6-31+G(d,p) basis set for the ligand. Molecular electrostatic potential (MEP) and average local ionization energy (ALIE) surfaces were calculated to study the reactive properties of the compounds. The thermal behaviour of the compounds was determined by simultaneous thermogravimetric-differential scanning calorimetric (TG-DSC) measurements and the results were correlated to the proposed structures and to calculated MEP/ALIE surfaces. The compounds were tested in vitro for antiproliferative effects on parental (L5178Y) mouse T-cell lymphoma cells, on L5178Y transfected with pHa ABCB1/A retrovirus and for reversal of multidrug resistance (MDR) in tumor cells by flow cytometry. The preliminary measurements showed that the cobalt(III) compound was an effective inhibitor of the ABC transporter PGP drug efflux pump. The ligand was somewhat less effective, the zinc complex had a moderate inhibition activity, whereas the nickel(II) and copper(II) compounds were inactive.
T2  - New Journal of Chemistry
T1  - Coordination compounds of a hydrazone derivative with Co(III), Ni(II), Cu(II) and Zn(II): synthesis, characterization, reactivity assessment and biological evaluation
VL  - 40
IS  - 7
SP  - 5885
EP  - 5895
DO  - 10.1039/c6nj00560h
ER  - 

@article{
author = "Hollo, B. Barta and Magyari, J. and Armaković, Sanja J. and Bogdanović, Goran A. and Rodic, M. V. and Armaković, Sanja J. and Molnar, J. and Spengler, G. and Leovac, Vukadin M. and Szecsenyi, K. Meszaros",
year = "2016",
abstract = "A new hydrazone-type ligand with a five N-donor set and its coordination compounds with Co(III), Ni(II), Cu(II) and Zn(II) metal centres were synthesized. The crystal and molecular structure of the Co(III) complex was determined by X-ray structural analysis. All the compounds were characterized by elemental analysis, molar conductivity and FT-IR spectral data. The cobalt(III) compound is a neutral binuclear complex formed by coordination of two, doubly deprotonated ligand anions as bridges between the Co(III) centres. The metal centres are additionally connected by a peroxido bridge, which was observed for the first time in Co(III) complexes with similar ligands. The other coordination compounds are mononuclear complexes wherein only one doubly deprotonated ligand is coordinated to the central ion in a tetradentate fashion. The structures were theoretically investigated employing density functional theory (DFT) calculations with B3LYP exchange-correlation functional and LACV3P+(d,p) basis sets for the coordination compounds and 6-31+G(d,p) basis set for the ligand. Molecular electrostatic potential (MEP) and average local ionization energy (ALIE) surfaces were calculated to study the reactive properties of the compounds. The thermal behaviour of the compounds was determined by simultaneous thermogravimetric-differential scanning calorimetric (TG-DSC) measurements and the results were correlated to the proposed structures and to calculated MEP/ALIE surfaces. The compounds were tested in vitro for antiproliferative effects on parental (L5178Y) mouse T-cell lymphoma cells, on L5178Y transfected with pHa ABCB1/A retrovirus and for reversal of multidrug resistance (MDR) in tumor cells by flow cytometry. The preliminary measurements showed that the cobalt(III) compound was an effective inhibitor of the ABC transporter PGP drug efflux pump. The ligand was somewhat less effective, the zinc complex had a moderate inhibition activity, whereas the nickel(II) and copper(II) compounds were inactive.",
journal = "New Journal of Chemistry",
title = "Coordination compounds of a hydrazone derivative with Co(III), Ni(II), Cu(II) and Zn(II): synthesis, characterization, reactivity assessment and biological evaluation",
volume = "40",
number = "7",
pages = "5885-5895",
doi = "10.1039/c6nj00560h"
}

Hollo, B. B., Magyari, J., Armaković, S. J., Bogdanović, G. A., Rodic, M. V., Armaković, S. J., Molnar, J., Spengler, G., Leovac, V. M.,& Szecsenyi, K. M.. (2016). Coordination compounds of a hydrazone derivative with Co(III), Ni(II), Cu(II) and Zn(II): synthesis, characterization, reactivity assessment and biological evaluation. in New Journal of Chemistry, 40(7), 5885-5895.
https://doi.org/10.1039/c6nj00560h

Hollo BB, Magyari J, Armaković SJ, Bogdanović GA, Rodic MV, Armaković SJ, Molnar J, Spengler G, Leovac VM, Szecsenyi KM. Coordination compounds of a hydrazone derivative with Co(III), Ni(II), Cu(II) and Zn(II): synthesis, characterization, reactivity assessment and biological evaluation. in New Journal of Chemistry. 2016;40(7):5885-5895.
doi:10.1039/c6nj00560h .

Hollo, B. Barta, Magyari, J., Armaković, Sanja J., Bogdanović, Goran A., Rodic, M. V., Armaković, Sanja J., Molnar, J., Spengler, G., Leovac, Vukadin M., Szecsenyi, K. Meszaros, "Coordination compounds of a hydrazone derivative with Co(III), Ni(II), Cu(II) and Zn(II): synthesis, characterization, reactivity assessment and biological evaluation" in New Journal of Chemistry, 40, no. 7 (2016):5885-5895,
https://doi.org/10.1039/c6nj00560h . .

TY  - JOUR
AU  - Rodić, Marko V.
AU  - Leovac, Vukadin M.
AU  - Jovanović, Ljiljana S.
AU  - Spasojević, Vojislav
AU  - Joksović, Milan D.
AU  - Stanojković, Tatjana P.
AU  - Matić, Ivana Z.
AU  - Vojinović-Ješić, Ljiljana S.
AU  - Marković, Violeta
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1053
AB  - Three novel copper complexes with tridentate N2O ligand di(2-pyridil) ketone 1-adamantoyl hydrazone (Addpy) of the formula [(Cu2Cu2I)-Cu-II(Addpy)(2)Br-2(mu-Br-4)] (1), catena-poly[CuCl(mu-Addpy)(mu-Cl)CuCl2](n) (2) and [Cu(Addpy)(NCS)(2)] (3) were synthesized. Complexes are characterized by X-ray crystallography, spectral (UV-Vis, FTIR), electrochemical (CV) analyses, and magnetochemical measurements. Investigation of anticancer potential of Cu(II) complexes, mode of cell death, apoptosis, and inhibition of angiogenesis were performed. All tested malignant cell lines (HeLa, LS174, A549, K562, and MDA-MB-231) showed high sensitivity to the examined Cu(II) complexes. It has been shown that the complexes induce apoptosis in the caspase 3-dependent manner, whereas the anti-angiogenic effects of 1, 2, and 3 have been confirmed in EA.hy926 cells using a tube formation assay. (C) 2016 Elsevier Masson SAS. All rights reserved.
PB  - Elsevier
T2  - European Journal of Medicinal Chemistry
T1  - Synthesis, characterization, cytotoxicity and antiangiogenic activity of copper(II) complexes with 1-adamantoyl hydrazone bearing pyridine rings
VL  - 115
SP  - 75
EP  - 81
DO  - 10.1016/j.ejmech.2016.03.003
ER  - 

@article{
author = "Rodić, Marko V. and Leovac, Vukadin M. and Jovanović, Ljiljana S. and Spasojević, Vojislav and Joksović, Milan D. and Stanojković, Tatjana P. and Matić, Ivana Z. and Vojinović-Ješić, Ljiljana S. and Marković, Violeta",
year = "2016",
abstract = "Three novel copper complexes with tridentate N2O ligand di(2-pyridil) ketone 1-adamantoyl hydrazone (Addpy) of the formula [(Cu2Cu2I)-Cu-II(Addpy)(2)Br-2(mu-Br-4)] (1), catena-poly[CuCl(mu-Addpy)(mu-Cl)CuCl2](n) (2) and [Cu(Addpy)(NCS)(2)] (3) were synthesized. Complexes are characterized by X-ray crystallography, spectral (UV-Vis, FTIR), electrochemical (CV) analyses, and magnetochemical measurements. Investigation of anticancer potential of Cu(II) complexes, mode of cell death, apoptosis, and inhibition of angiogenesis were performed. All tested malignant cell lines (HeLa, LS174, A549, K562, and MDA-MB-231) showed high sensitivity to the examined Cu(II) complexes. It has been shown that the complexes induce apoptosis in the caspase 3-dependent manner, whereas the anti-angiogenic effects of 1, 2, and 3 have been confirmed in EA.hy926 cells using a tube formation assay. (C) 2016 Elsevier Masson SAS. All rights reserved.",
publisher = "Elsevier",
journal = "European Journal of Medicinal Chemistry",
title = "Synthesis, characterization, cytotoxicity and antiangiogenic activity of copper(II) complexes with 1-adamantoyl hydrazone bearing pyridine rings",
volume = "115",
pages = "75-81",
doi = "10.1016/j.ejmech.2016.03.003"
}

Rodić, M. V., Leovac, V. M., Jovanović, L. S., Spasojević, V., Joksović, M. D., Stanojković, T. P., Matić, I. Z., Vojinović-Ješić, L. S.,& Marković, V.. (2016). Synthesis, characterization, cytotoxicity and antiangiogenic activity of copper(II) complexes with 1-adamantoyl hydrazone bearing pyridine rings. in European Journal of Medicinal Chemistry
Elsevier., 115, 75-81.
https://doi.org/10.1016/j.ejmech.2016.03.003

Rodić MV, Leovac VM, Jovanović LS, Spasojević V, Joksović MD, Stanojković TP, Matić IZ, Vojinović-Ješić LS, Marković V. Synthesis, characterization, cytotoxicity and antiangiogenic activity of copper(II) complexes with 1-adamantoyl hydrazone bearing pyridine rings. in European Journal of Medicinal Chemistry. 2016;115:75-81.
doi:10.1016/j.ejmech.2016.03.003 .

Rodić, Marko V., Leovac, Vukadin M., Jovanović, Ljiljana S., Spasojević, Vojislav, Joksović, Milan D., Stanojković, Tatjana P., Matić, Ivana Z., Vojinović-Ješić, Ljiljana S., Marković, Violeta, "Synthesis, characterization, cytotoxicity and antiangiogenic activity of copper(II) complexes with 1-adamantoyl hydrazone bearing pyridine rings" in European Journal of Medicinal Chemistry, 115 (2016):75-81,
https://doi.org/10.1016/j.ejmech.2016.03.003 . .

TY  - JOUR
AU  - Ivkovic, Sonja A.
AU  - Vojinović-Ješić, Ljiljana S.
AU  - Leovac, Vukadin M.
AU  - Rodić, Marko V.
AU  - Novaković, Slađana B.
AU  - Bogdanović, Goran A.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/360
AB  - A novel pyridoxal thiosemicarbazone (PLTSC) compound, exhibiting ligating properties, of the formula PLTSC center dot HCl center dot 2H(2)O (1) was synthesized and characterized by X-ray analysis. The PLTSC ligand 1 displays significantly different conformation in comparison to the five previously reported compounds of this type. The structural properties of six PLTSC ligands in different conformations were compared in order to establish the structural differences and understand the factors that facilitate particular conformations. The analysis indicated great structural flexibility of the PLTSC ligands. The PLTSC ligand 1 is essentially a planar molecule with the r.m.s deviation of all non-H atoms equal to 0.06 angstrom. Consequently, the molecules of 1 form a layered three-dimensional structure which is stabilized by a variety of hydrogen bonds: O-H center dot center dot center dot O, O-H center dot center dot center dot N, O-H center dot center dot center dot Cl, O-H center dot center dot center dot S, N-H center dot center dot center dot O, N-H center dot center dot center dot N, N-H center dot center dot center dot Cl, N-H center dot center dot center dot S. In addition, the crystal structure of the Fe(III) complex with the ligand 1 of the formula [Fe(PLTSC)Cl-2(H2O)]Cl was resolved by single-crystal X-ray analysis and structural properties of this octahedral complex were discussed and compared to those of uncoordinated PLTSC ligand.
T2  - Structural Chemistry
T1  - Transition metal complexes with thiosemicarbazide-based ligands. Part 61. Comparative analysis of structural properties of the pyridoxal thiosemicarbazone ligands. Crystal structure of PLTSC center dot HCl center dot 2H(2)O and its complex [Fe(PLTSC)Cl-2(H2O)]Cl
VL  - 26
IS  - 1
SP  - 269
EP  - 277
DO  - 10.1007/s11224-014-0491-6
ER  - 

@article{
author = "Ivkovic, Sonja A. and Vojinović-Ješić, Ljiljana S. and Leovac, Vukadin M. and Rodić, Marko V. and Novaković, Slađana B. and Bogdanović, Goran A.",
year = "2015",
abstract = "A novel pyridoxal thiosemicarbazone (PLTSC) compound, exhibiting ligating properties, of the formula PLTSC center dot HCl center dot 2H(2)O (1) was synthesized and characterized by X-ray analysis. The PLTSC ligand 1 displays significantly different conformation in comparison to the five previously reported compounds of this type. The structural properties of six PLTSC ligands in different conformations were compared in order to establish the structural differences and understand the factors that facilitate particular conformations. The analysis indicated great structural flexibility of the PLTSC ligands. The PLTSC ligand 1 is essentially a planar molecule with the r.m.s deviation of all non-H atoms equal to 0.06 angstrom. Consequently, the molecules of 1 form a layered three-dimensional structure which is stabilized by a variety of hydrogen bonds: O-H center dot center dot center dot O, O-H center dot center dot center dot N, O-H center dot center dot center dot Cl, O-H center dot center dot center dot S, N-H center dot center dot center dot O, N-H center dot center dot center dot N, N-H center dot center dot center dot Cl, N-H center dot center dot center dot S. In addition, the crystal structure of the Fe(III) complex with the ligand 1 of the formula [Fe(PLTSC)Cl-2(H2O)]Cl was resolved by single-crystal X-ray analysis and structural properties of this octahedral complex were discussed and compared to those of uncoordinated PLTSC ligand.",
journal = "Structural Chemistry",
title = "Transition metal complexes with thiosemicarbazide-based ligands. Part 61. Comparative analysis of structural properties of the pyridoxal thiosemicarbazone ligands. Crystal structure of PLTSC center dot HCl center dot 2H(2)O and its complex [Fe(PLTSC)Cl-2(H2O)]Cl",
volume = "26",
number = "1",
pages = "269-277",
doi = "10.1007/s11224-014-0491-6"
}

Ivkovic, S. A., Vojinović-Ješić, L. S., Leovac, V. M., Rodić, M. V., Novaković, S. B.,& Bogdanović, G. A.. (2015). Transition metal complexes with thiosemicarbazide-based ligands. Part 61. Comparative analysis of structural properties of the pyridoxal thiosemicarbazone ligands. Crystal structure of PLTSC center dot HCl center dot 2H(2)O and its complex [Fe(PLTSC)Cl-2(H2O)]Cl. in Structural Chemistry, 26(1), 269-277.
https://doi.org/10.1007/s11224-014-0491-6

Ivkovic SA, Vojinović-Ješić LS, Leovac VM, Rodić MV, Novaković SB, Bogdanović GA. Transition metal complexes with thiosemicarbazide-based ligands. Part 61. Comparative analysis of structural properties of the pyridoxal thiosemicarbazone ligands. Crystal structure of PLTSC center dot HCl center dot 2H(2)O and its complex [Fe(PLTSC)Cl-2(H2O)]Cl. in Structural Chemistry. 2015;26(1):269-277.
doi:10.1007/s11224-014-0491-6 .

Ivkovic, Sonja A., Vojinović-Ješić, Ljiljana S., Leovac, Vukadin M., Rodić, Marko V., Novaković, Slađana B., Bogdanović, Goran A., "Transition metal complexes with thiosemicarbazide-based ligands. Part 61. Comparative analysis of structural properties of the pyridoxal thiosemicarbazone ligands. Crystal structure of PLTSC center dot HCl center dot 2H(2)O and its complex [Fe(PLTSC)Cl-2(H2O)]Cl" in Structural Chemistry, 26, no. 1 (2015):269-277,
https://doi.org/10.1007/s11224-014-0491-6 . .

TY  - JOUR
AU  - Hollo, Berta
AU  - Rodić, Marko V.
AU  - Bera, Oskar
AU  - Jovicic, Mirjana
AU  - Leovac, Vukadin M.
AU  - Tomić, Zoran D.
AU  - Szecsenyi, Katalin Meszaros
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5791
AB  - The crystal and molecular structure of [Cu(ampf)(ClO4)(MeOH)(2)]ClO4, (1), ampf = N, N-bis(4-acetyl-5-methylpyrazol-3-yl)formamidine, determined by X-ray crystallography is described and compared with the structurally related copper(II) complexes, formed under similar experimental conditions, using Cu-II salts with different anions. The complex formation is discussed in view of the structures of cobalt(II) and nickel(II) complexes with the same organic ligand and different anions, also formed under similar reaction conditions. Solvent molecules coordinated to the central atom play an important role in biologic systems. To get a better insight into the desolvation mechanism, in this study the desolvation pattern of 1 is presented. As in literature little attention is paid to the desolvation mechanism of solvate complexes, the desolvation mechanism of three, potentially biologically active isostructural pairs of octahedral Ni-II and Co-II compounds with ampf and dmpc (3,5-dimethyl-1H-pyrazole-1-carboxamidine) ligands are evaluated and compared with the desolvation of 1. The results of the thermal data are discussed on the basis of structural features of the compounds. The minor differences in structures of the related compounds cannot be straightforwardly connected with the different solvent evaporation mechanism. To explain the differences found in desolvation pattern in isostructural Co-II and Ni-II complexes the Jahn-Teller effect is proposed.
T2  - Structural Chemistry
T1  - Cation- and/or anion-directed reaction routes. Could the desolvation pattern of isostructural coordination compounds be related to their molecular structure?
VL  - 24
IS  - 6
SP  - 2193
EP  - 2201
DO  - 10.1007/s11224-013-0270-9
ER  - 

@article{
author = "Hollo, Berta and Rodić, Marko V. and Bera, Oskar and Jovicic, Mirjana and Leovac, Vukadin M. and Tomić, Zoran D. and Szecsenyi, Katalin Meszaros",
year = "2013",
abstract = "The crystal and molecular structure of [Cu(ampf)(ClO4)(MeOH)(2)]ClO4, (1), ampf = N, N-bis(4-acetyl-5-methylpyrazol-3-yl)formamidine, determined by X-ray crystallography is described and compared with the structurally related copper(II) complexes, formed under similar experimental conditions, using Cu-II salts with different anions. The complex formation is discussed in view of the structures of cobalt(II) and nickel(II) complexes with the same organic ligand and different anions, also formed under similar reaction conditions. Solvent molecules coordinated to the central atom play an important role in biologic systems. To get a better insight into the desolvation mechanism, in this study the desolvation pattern of 1 is presented. As in literature little attention is paid to the desolvation mechanism of solvate complexes, the desolvation mechanism of three, potentially biologically active isostructural pairs of octahedral Ni-II and Co-II compounds with ampf and dmpc (3,5-dimethyl-1H-pyrazole-1-carboxamidine) ligands are evaluated and compared with the desolvation of 1. The results of the thermal data are discussed on the basis of structural features of the compounds. The minor differences in structures of the related compounds cannot be straightforwardly connected with the different solvent evaporation mechanism. To explain the differences found in desolvation pattern in isostructural Co-II and Ni-II complexes the Jahn-Teller effect is proposed.",
journal = "Structural Chemistry",
title = "Cation- and/or anion-directed reaction routes. Could the desolvation pattern of isostructural coordination compounds be related to their molecular structure?",
volume = "24",
number = "6",
pages = "2193-2201",
doi = "10.1007/s11224-013-0270-9"
}

Hollo, B., Rodić, M. V., Bera, O., Jovicic, M., Leovac, V. M., Tomić, Z. D.,& Szecsenyi, K. M.. (2013). Cation- and/or anion-directed reaction routes. Could the desolvation pattern of isostructural coordination compounds be related to their molecular structure?. in Structural Chemistry, 24(6), 2193-2201.
https://doi.org/10.1007/s11224-013-0270-9

Hollo B, Rodić MV, Bera O, Jovicic M, Leovac VM, Tomić ZD, Szecsenyi KM. Cation- and/or anion-directed reaction routes. Could the desolvation pattern of isostructural coordination compounds be related to their molecular structure?. in Structural Chemistry. 2013;24(6):2193-2201.
doi:10.1007/s11224-013-0270-9 .

Hollo, Berta, Rodić, Marko V., Bera, Oskar, Jovicic, Mirjana, Leovac, Vukadin M., Tomić, Zoran D., Szecsenyi, Katalin Meszaros, "Cation- and/or anion-directed reaction routes. Could the desolvation pattern of isostructural coordination compounds be related to their molecular structure?" in Structural Chemistry, 24, no. 6 (2013):2193-2201,
https://doi.org/10.1007/s11224-013-0270-9 . .

TY  - JOUR
AU  - Novaković, Slađana B.
AU  - Bogdanović, Goran A.
AU  - Leovac, Vukadin M.
AU  - Rodić, Marko V.
AU  - Vojinović-Ješić, Ljiljana S.
AU  - Ivkovic, Sonja
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5580
AB  - The title compound, C9H13N4O3+center dot NO3-, is the first structurally characterized Schiff base derived from semicarbazide and pyridoxal. Unusually for an unsubstituted semicarbazone, the compound adopts a syn conformation, in which the carbonyl O atom is in a cis disposition relative to the azomethine N atom. This arrangement is supported by a pair of hydrogen bonds between the organic cation and the nitrate anion. The cation is essentially planar, with only a hydroxymethyl O atom deviating significantly from the mean plane of the remaining atoms (r.m.s. deviation of the remaining non-H atoms = 0.01 angstrom). The molecules are linked into flat layers by N-H center dot center dot center dot O and C-H center dot center dot center dot O hydrogen bonds. O-H center dot center dot center dot O hydrogen bonds involving the hydroxymethyl group as a donor interconnect the layers into a three-dimensional structure.
T2  - Acta Crystallographica. Section C: Crystal Structure Communications
T1  - (E)-4-[(2-Carbamoylhydrazinylidene)methyl]-3-hydroxy-5-hydroxymethyl-2-methylpyridin-1-ium nitrate
VL  - 69
SP  - 761
EP  - +
DO  - 10.1107/S0108270113013929
ER  - 

@article{
author = "Novaković, Slađana B. and Bogdanović, Goran A. and Leovac, Vukadin M. and Rodić, Marko V. and Vojinović-Ješić, Ljiljana S. and Ivkovic, Sonja",
year = "2013",
abstract = "The title compound, C9H13N4O3+center dot NO3-, is the first structurally characterized Schiff base derived from semicarbazide and pyridoxal. Unusually for an unsubstituted semicarbazone, the compound adopts a syn conformation, in which the carbonyl O atom is in a cis disposition relative to the azomethine N atom. This arrangement is supported by a pair of hydrogen bonds between the organic cation and the nitrate anion. The cation is essentially planar, with only a hydroxymethyl O atom deviating significantly from the mean plane of the remaining atoms (r.m.s. deviation of the remaining non-H atoms = 0.01 angstrom). The molecules are linked into flat layers by N-H center dot center dot center dot O and C-H center dot center dot center dot O hydrogen bonds. O-H center dot center dot center dot O hydrogen bonds involving the hydroxymethyl group as a donor interconnect the layers into a three-dimensional structure.",
journal = "Acta Crystallographica. Section C: Crystal Structure Communications",
title = "(E)-4-[(2-Carbamoylhydrazinylidene)methyl]-3-hydroxy-5-hydroxymethyl-2-methylpyridin-1-ium nitrate",
volume = "69",
pages = "761-+",
doi = "10.1107/S0108270113013929"
}

Novaković, S. B., Bogdanović, G. A., Leovac, V. M., Rodić, M. V., Vojinović-Ješić, L. S.,& Ivkovic, S.. (2013). (E)-4-[(2-Carbamoylhydrazinylidene)methyl]-3-hydroxy-5-hydroxymethyl-2-methylpyridin-1-ium nitrate. in Acta Crystallographica. Section C: Crystal Structure Communications, 69, 761-+.
https://doi.org/10.1107/S0108270113013929

Novaković SB, Bogdanović GA, Leovac VM, Rodić MV, Vojinović-Ješić LS, Ivkovic S. (E)-4-[(2-Carbamoylhydrazinylidene)methyl]-3-hydroxy-5-hydroxymethyl-2-methylpyridin-1-ium nitrate. in Acta Crystallographica. Section C: Crystal Structure Communications. 2013;69:761-+.
doi:10.1107/S0108270113013929 .

Novaković, Slađana B., Bogdanović, Goran A., Leovac, Vukadin M., Rodić, Marko V., Vojinović-Ješić, Ljiljana S., Ivkovic, Sonja, "(E)-4-[(2-Carbamoylhydrazinylidene)methyl]-3-hydroxy-5-hydroxymethyl-2-methylpyridin-1-ium nitrate" in Acta Crystallographica. Section C: Crystal Structure Communications, 69 (2013):761-+,
https://doi.org/10.1107/S0108270113013929 . .

TY  - JOUR
AU  - Marković, Jelena P.
AU  - Milonjić, Slobodan K.
AU  - Leovac, Vukadin M.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5827
AB  - The zirconia sol was prepared from a zirconium oxychloride solution by forced hydrolysis at 102 degrees C. The prepared sol consisted of almost spherical, monoclinic, hydrated zirconia particles of 61 nm in diameter. The stability of zirconia sol in the presence of various inorganic electrolytes (LiCl, NaCl, KCl, CsCl, KBr, KI, KNO3 and K2SO4) was studied by the potentiometric titration method. The dependence of the critical concentration of coagulation (ccc) on the dispersion pH was determined for all studied electrolytes. The critical coagulation concentration values for all investigated electrolytes were lower at higher pH values. These values for all 1:1 electrolytes were the same within the range of experimental error. For a given pH value, the cccs of K2SO4 are 3-4 orders of magnitude lower than the corresponding values for the 1:1 electrolytes.
T2  - Journal of the Serbian Chemical Society
T1  - Stability of zirconia sol in the presence of various inorganic electrolytes
VL  - 78
IS  - 12
SP  - 1975
EP  - 1982
DO  - 10.2298/JSC131021118M
ER  - 

@article{
author = "Marković, Jelena P. and Milonjić, Slobodan K. and Leovac, Vukadin M.",
year = "2013",
abstract = "The zirconia sol was prepared from a zirconium oxychloride solution by forced hydrolysis at 102 degrees C. The prepared sol consisted of almost spherical, monoclinic, hydrated zirconia particles of 61 nm in diameter. The stability of zirconia sol in the presence of various inorganic electrolytes (LiCl, NaCl, KCl, CsCl, KBr, KI, KNO3 and K2SO4) was studied by the potentiometric titration method. The dependence of the critical concentration of coagulation (ccc) on the dispersion pH was determined for all studied electrolytes. The critical coagulation concentration values for all investigated electrolytes were lower at higher pH values. These values for all 1:1 electrolytes were the same within the range of experimental error. For a given pH value, the cccs of K2SO4 are 3-4 orders of magnitude lower than the corresponding values for the 1:1 electrolytes.",
journal = "Journal of the Serbian Chemical Society",
title = "Stability of zirconia sol in the presence of various inorganic electrolytes",
volume = "78",
number = "12",
pages = "1975-1982",
doi = "10.2298/JSC131021118M"
}

Marković, J. P., Milonjić, S. K.,& Leovac, V. M.. (2013). Stability of zirconia sol in the presence of various inorganic electrolytes. in Journal of the Serbian Chemical Society, 78(12), 1975-1982.
https://doi.org/10.2298/JSC131021118M

Marković JP, Milonjić SK, Leovac VM. Stability of zirconia sol in the presence of various inorganic electrolytes. in Journal of the Serbian Chemical Society. 2013;78(12):1975-1982.
doi:10.2298/JSC131021118M .

Marković, Jelena P., Milonjić, Slobodan K., Leovac, Vukadin M., "Stability of zirconia sol in the presence of various inorganic electrolytes" in Journal of the Serbian Chemical Society, 78, no. 12 (2013):1975-1982,
https://doi.org/10.2298/JSC131021118M . .

TY  - JOUR
AU  - Vojinović-Ješić, Ljiljana S.
AU  - Novaković, Slađana B.
AU  - Leovac, Vukadin M.
AU  - Češljević, Valerija I.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5129
AB  - This is the first review dealing with the coordination chemistry of metal complexes with Girard reagents and their hydrazones. The short introduction indicates the chemical properties and significance of these organic compounds. The next section briefly describes synthetic methods for preparing complexes with Girard reagents, as well as the modes of coordination of these ligands. The last two extensive sections review the preparation, stereochemistry and structural characteristics of metal complexes with Girard hydrazones, including also some newer non-hydrazonic derivatives of Girard reagents.
T2  - Journal of the Serbian Chemical Society
T1  - Transition metal complexes with Girard reagents and their hydrazones
VL  - 77
IS  - 9
SP  - 1129
EP  - 1155
DO  - 10.2298/JSC120704083V
ER  - 

@article{
author = "Vojinović-Ješić, Ljiljana S. and Novaković, Slađana B. and Leovac, Vukadin M. and Češljević, Valerija I.",
year = "2012",
abstract = "This is the first review dealing with the coordination chemistry of metal complexes with Girard reagents and their hydrazones. The short introduction indicates the chemical properties and significance of these organic compounds. The next section briefly describes synthetic methods for preparing complexes with Girard reagents, as well as the modes of coordination of these ligands. The last two extensive sections review the preparation, stereochemistry and structural characteristics of metal complexes with Girard hydrazones, including also some newer non-hydrazonic derivatives of Girard reagents.",
journal = "Journal of the Serbian Chemical Society",
title = "Transition metal complexes with Girard reagents and their hydrazones",
volume = "77",
number = "9",
pages = "1129-1155",
doi = "10.2298/JSC120704083V"
}

Vojinović-Ješić, L. S., Novaković, S. B., Leovac, V. M.,& Češljević, V. I.. (2012). Transition metal complexes with Girard reagents and their hydrazones. in Journal of the Serbian Chemical Society, 77(9), 1129-1155.
https://doi.org/10.2298/JSC120704083V

Vojinović-Ješić LS, Novaković SB, Leovac VM, Češljević VI. Transition metal complexes with Girard reagents and their hydrazones. in Journal of the Serbian Chemical Society. 2012;77(9):1129-1155.
doi:10.2298/JSC120704083V .

Vojinović-Ješić, Ljiljana S., Novaković, Slađana B., Leovac, Vukadin M., Češljević, Valerija I., "Transition metal complexes with Girard reagents and their hydrazones" in Journal of the Serbian Chemical Society, 77, no. 9 (2012):1129-1155,
https://doi.org/10.2298/JSC120704083V . .

TY  - JOUR
AU  - Leovac, Vukadin M.
AU  - Bogdanović, Goran A.
AU  - Jovanović, Ljiljana S.
AU  - Joksović, Ljubinka G.
AU  - Marković, Violeta
AU  - Joksović, Milan D.
AU  - Misirlić-Denčić, Sonja
AU  - Isaković, Anđelka
AU  - Markovic, Ivanka
AU  - Heinemann, Frank W.
AU  - Trifunović, Srećko R.
AU  - Dalovic, Ivica
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4592
AB  - New polymeric copper(II) complexes with two tridentate ONS thiosemicarbazone ligands containing substituted pyrazolone moiety were synthesized and characterized by means of spectroscopic, electrochemical and crystallographic techniques. While both ligands exist as different tautomers in the solid state and DMSO-d(6) solution, Cu(II) ion coordinates the ligands from the same tautomeric form with square-pyramidal geometry around each Cu atom. In the crystal structures, the copper(II) complex cation forms polymeric chains {[Cu(L)Cl(+)]}(n) with a bridging chlorine atom. One of the complexes was found to have a significantly higher cytotoxic potential in comparison with cisplatin in inhibition of several cell lines (HL60, REH, C6, L929 and B16). The results obtained on the basis of flow cytometry indicated that apoptosis could be possible mechanism of cell death. (C) 2011 Elsevier Inc. All rights reserved.
T2  - Journal of Inorganic Biochemistry
T1  - Synthesis, characterization and antitumor activity of polymeric copper(II) complexes with thiosemicarbazones of 3-methyl-5-oxo-1-phenyl-3-pyrazolin-4-carboxaldehyde and 5-oxo-3-phenyl-3-pyrazolin-4-carboxaldehyde
VL  - 105
IS  - 11
SP  - 1413
EP  - 1421
DO  - 10.1016/j.jinorgbio.2011.07.021
ER  - 

@article{
author = "Leovac, Vukadin M. and Bogdanović, Goran A. and Jovanović, Ljiljana S. and Joksović, Ljubinka G. and Marković, Violeta and Joksović, Milan D. and Misirlić-Denčić, Sonja and Isaković, Anđelka and Markovic, Ivanka and Heinemann, Frank W. and Trifunović, Srećko R. and Dalovic, Ivica",
year = "2011",
abstract = "New polymeric copper(II) complexes with two tridentate ONS thiosemicarbazone ligands containing substituted pyrazolone moiety were synthesized and characterized by means of spectroscopic, electrochemical and crystallographic techniques. While both ligands exist as different tautomers in the solid state and DMSO-d(6) solution, Cu(II) ion coordinates the ligands from the same tautomeric form with square-pyramidal geometry around each Cu atom. In the crystal structures, the copper(II) complex cation forms polymeric chains {[Cu(L)Cl(+)]}(n) with a bridging chlorine atom. One of the complexes was found to have a significantly higher cytotoxic potential in comparison with cisplatin in inhibition of several cell lines (HL60, REH, C6, L929 and B16). The results obtained on the basis of flow cytometry indicated that apoptosis could be possible mechanism of cell death. (C) 2011 Elsevier Inc. All rights reserved.",
journal = "Journal of Inorganic Biochemistry",
title = "Synthesis, characterization and antitumor activity of polymeric copper(II) complexes with thiosemicarbazones of 3-methyl-5-oxo-1-phenyl-3-pyrazolin-4-carboxaldehyde and 5-oxo-3-phenyl-3-pyrazolin-4-carboxaldehyde",
volume = "105",
number = "11",
pages = "1413-1421",
doi = "10.1016/j.jinorgbio.2011.07.021"
}

Leovac, V. M., Bogdanović, G. A., Jovanović, L. S., Joksović, L. G., Marković, V., Joksović, M. D., Misirlić-Denčić, S., Isaković, A., Markovic, I., Heinemann, F. W., Trifunović, S. R.,& Dalovic, I.. (2011). Synthesis, characterization and antitumor activity of polymeric copper(II) complexes with thiosemicarbazones of 3-methyl-5-oxo-1-phenyl-3-pyrazolin-4-carboxaldehyde and 5-oxo-3-phenyl-3-pyrazolin-4-carboxaldehyde. in Journal of Inorganic Biochemistry, 105(11), 1413-1421.
https://doi.org/10.1016/j.jinorgbio.2011.07.021

Leovac VM, Bogdanović GA, Jovanović LS, Joksović LG, Marković V, Joksović MD, Misirlić-Denčić S, Isaković A, Markovic I, Heinemann FW, Trifunović SR, Dalovic I. Synthesis, characterization and antitumor activity of polymeric copper(II) complexes with thiosemicarbazones of 3-methyl-5-oxo-1-phenyl-3-pyrazolin-4-carboxaldehyde and 5-oxo-3-phenyl-3-pyrazolin-4-carboxaldehyde. in Journal of Inorganic Biochemistry. 2011;105(11):1413-1421.
doi:10.1016/j.jinorgbio.2011.07.021 .

Leovac, Vukadin M., Bogdanović, Goran A., Jovanović, Ljiljana S., Joksović, Ljubinka G., Marković, Violeta, Joksović, Milan D., Misirlić-Denčić, Sonja, Isaković, Anđelka, Markovic, Ivanka, Heinemann, Frank W., Trifunović, Srećko R., Dalovic, Ivica, "Synthesis, characterization and antitumor activity of polymeric copper(II) complexes with thiosemicarbazones of 3-methyl-5-oxo-1-phenyl-3-pyrazolin-4-carboxaldehyde and 5-oxo-3-phenyl-3-pyrazolin-4-carboxaldehyde" in Journal of Inorganic Biochemistry, 105, no. 11 (2011):1413-1421,
https://doi.org/10.1016/j.jinorgbio.2011.07.021 . .

TY  - JOUR
AU  - Jaćimović, Željko K.
AU  - Novaković, Slađana B.
AU  - Bogdanović, Goran A.
AU  - Belosevic, Svetlana
AU  - Jokic, Anja
AU  - Leovac, Vukadin M.
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4532
AB  - C27H27Cl2N9Zn, tetragonal, P (4) over bar2(1)c (no. 114), a = 17.522(2) angstrom, C = 18.583(3) angstrom, V= 5705.4 angstrom(3), Z = 8, R-gt(F) = 0.040, wR(ref)(F-2) = 0.114, T = 293 K.
T2  - Zeitschrift fur Kristallographie = New Crystal Structures
T1  - Crystal structure of chlorido-tris(3-amino-5-phenyl-1H-pyrazole-N-2)zinc(II) chloride, [ZnCl(C9H9N3)(3)]Cl
VL  - 226
IS  - 3
SP  - 397
EP  - 399
DO  - 10.1524/ncrs.2011.0178
ER  - 

@article{
author = "Jaćimović, Željko K. and Novaković, Slađana B. and Bogdanović, Goran A. and Belosevic, Svetlana and Jokic, Anja and Leovac, Vukadin M.",
year = "2011",
abstract = "C27H27Cl2N9Zn, tetragonal, P (4) over bar2(1)c (no. 114), a = 17.522(2) angstrom, C = 18.583(3) angstrom, V= 5705.4 angstrom(3), Z = 8, R-gt(F) = 0.040, wR(ref)(F-2) = 0.114, T = 293 K.",
journal = "Zeitschrift fur Kristallographie = New Crystal Structures",
title = "Crystal structure of chlorido-tris(3-amino-5-phenyl-1H-pyrazole-N-2)zinc(II) chloride, [ZnCl(C9H9N3)(3)]Cl",
volume = "226",
number = "3",
pages = "397-399",
doi = "10.1524/ncrs.2011.0178"
}

Jaćimović, Ž. K., Novaković, S. B., Bogdanović, G. A., Belosevic, S., Jokic, A.,& Leovac, V. M.. (2011). Crystal structure of chlorido-tris(3-amino-5-phenyl-1H-pyrazole-N-2)zinc(II) chloride, [ZnCl(C9H9N3)(3)]Cl. in Zeitschrift fur Kristallographie = New Crystal Structures, 226(3), 397-399.
https://doi.org/10.1524/ncrs.2011.0178

Jaćimović ŽK, Novaković SB, Bogdanović GA, Belosevic S, Jokic A, Leovac VM. Crystal structure of chlorido-tris(3-amino-5-phenyl-1H-pyrazole-N-2)zinc(II) chloride, [ZnCl(C9H9N3)(3)]Cl. in Zeitschrift fur Kristallographie = New Crystal Structures. 2011;226(3):397-399.
doi:10.1524/ncrs.2011.0178 .

Jaćimović, Željko K., Novaković, Slađana B., Bogdanović, Goran A., Belosevic, Svetlana, Jokic, Anja, Leovac, Vukadin M., "Crystal structure of chlorido-tris(3-amino-5-phenyl-1H-pyrazole-N-2)zinc(II) chloride, [ZnCl(C9H9N3)(3)]Cl" in Zeitschrift fur Kristallographie = New Crystal Structures, 226, no. 3 (2011):397-399,
https://doi.org/10.1524/ncrs.2011.0178 . .

TY  - JOUR
AU  - Novaković, Slađana B.
AU  - Drašković, Bojana M.
AU  - Vojinović-Ješić, Ljiljana S.
AU  - Češljević, Valerija I.
AU  - Leovac, Vukadin M.
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3923
AB  - The asymmetric unit of the title compound, (C12H18N3O4)(2)[ZnCl4]center dot CH3OH, consists of two Girard reagent-based cations, a tetrachloridozincate anion and a molecule of methanol as solvate. These components are interconnected in the crystal structure by an extensive network of O-H center dot center dot center dot O, N-H center dot center dot center dot O, C-H center dot center dot center dot O, O-H center dot center dot center dot N, O-H center dot center dot center dot Cl, N-H center dot center dot center dot Cl and C-H center dot center dot center dot Cl hydrogen bonds. The shortest intermolecular interaction is realized between the cation and anion [H center dot center dot center dot Cl = 2.29 (5) angstrom; O-H center dot center dot center dot Cl = 167 (3)degrees]. C-H center dot center dot center dot O interactions also play a important role in the interconnection of the cations.
T2  - Acta Crystallographica. Section E: Structure Reports Online
T1  - Bis{N,N,N-trimethyl-2-oxo-2-[2-(2,3,4-trihydroxybenzylidene)hydrazinyl]ethanaminium} tetrachloridozincate(II) methanol solvate
VL  - 66
SP  - M328
EP  - U3816
DO  - 10.1107/S160053681000615X
ER  - 

@article{
author = "Novaković, Slađana B. and Drašković, Bojana M. and Vojinović-Ješić, Ljiljana S. and Češljević, Valerija I. and Leovac, Vukadin M.",
year = "2010",
abstract = "The asymmetric unit of the title compound, (C12H18N3O4)(2)[ZnCl4]center dot CH3OH, consists of two Girard reagent-based cations, a tetrachloridozincate anion and a molecule of methanol as solvate. These components are interconnected in the crystal structure by an extensive network of O-H center dot center dot center dot O, N-H center dot center dot center dot O, C-H center dot center dot center dot O, O-H center dot center dot center dot N, O-H center dot center dot center dot Cl, N-H center dot center dot center dot Cl and C-H center dot center dot center dot Cl hydrogen bonds. The shortest intermolecular interaction is realized between the cation and anion [H center dot center dot center dot Cl = 2.29 (5) angstrom; O-H center dot center dot center dot Cl = 167 (3)degrees]. C-H center dot center dot center dot O interactions also play a important role in the interconnection of the cations.",
journal = "Acta Crystallographica. Section E: Structure Reports Online",
title = "Bis{N,N,N-trimethyl-2-oxo-2-[2-(2,3,4-trihydroxybenzylidene)hydrazinyl]ethanaminium} tetrachloridozincate(II) methanol solvate",
volume = "66",
pages = "M328-U3816",
doi = "10.1107/S160053681000615X"
}

Novaković, S. B., Drašković, B. M., Vojinović-Ješić, L. S., Češljević, V. I.,& Leovac, V. M.. (2010). Bis{N,N,N-trimethyl-2-oxo-2-[2-(2,3,4-trihydroxybenzylidene)hydrazinyl]ethanaminium} tetrachloridozincate(II) methanol solvate. in Acta Crystallographica. Section E: Structure Reports Online, 66, M328-U3816.
https://doi.org/10.1107/S160053681000615X

Novaković SB, Drašković BM, Vojinović-Ješić LS, Češljević VI, Leovac VM. Bis{N,N,N-trimethyl-2-oxo-2-[2-(2,3,4-trihydroxybenzylidene)hydrazinyl]ethanaminium} tetrachloridozincate(II) methanol solvate. in Acta Crystallographica. Section E: Structure Reports Online. 2010;66:M328-U3816.
doi:10.1107/S160053681000615X .

Novaković, Slađana B., Drašković, Bojana M., Vojinović-Ješić, Ljiljana S., Češljević, Valerija I., Leovac, Vukadin M., "Bis{N,N,N-trimethyl-2-oxo-2-[2-(2,3,4-trihydroxybenzylidene)hydrazinyl]ethanaminium} tetrachloridozincate(II) methanol solvate" in Acta Crystallographica. Section E: Structure Reports Online, 66 (2010):M328-U3816,
https://doi.org/10.1107/S160053681000615X . .

TY  - JOUR
AU  - Vojinović-Ješić, Ljiljana S.
AU  - Češljević, Valerija I.
AU  - Bogdanović, Goran A.
AU  - Leovac, Vukadin M.
AU  - Szecsenyi, Katalin Meszaros
AU  - Divjakovic, Vladimir
AU  - Joksović, Milan D.
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4079
AB  - The article describes the synthesis and crystal structure of the Mn(II) complex with 2,6-diacetylpyridine bis (Girard-T hydrazone), (H(2)dap(GT)(2))(2+), of the formula [Mn(H(2)dap(GT)(2))(NCS)(2)](NCS)(2)center dot MeOH. The complex has a pentagonal-bipyramidal coordination geometry, with pentadentate N(3)O(2) ligand in the equatorial plane and two isothiocyanato groups in the axial positions. Both the ligand and the complex are characterized by their FT-IR spectra and thermal data. (C) 2010 Elsevier B.V. All rights reserved.
T2  - Inorganic Chemistry Communications
T1  - Transition metal complexes with Girard reagent-based ligands. Part V. Synthesis, characterization and crystal structure of pentagonal-bipyramidal manganese(II) complex with 2,6-diacetylpyridine bis(Girard-T hydrazone)
VL  - 13
IS  - 9
SP  - 1085
EP  - 1088
DO  - 10.1016/j.inoche.2010.06.022
ER  - 

@article{
author = "Vojinović-Ješić, Ljiljana S. and Češljević, Valerija I. and Bogdanović, Goran A. and Leovac, Vukadin M. and Szecsenyi, Katalin Meszaros and Divjakovic, Vladimir and Joksović, Milan D.",
year = "2010",
abstract = "The article describes the synthesis and crystal structure of the Mn(II) complex with 2,6-diacetylpyridine bis (Girard-T hydrazone), (H(2)dap(GT)(2))(2+), of the formula [Mn(H(2)dap(GT)(2))(NCS)(2)](NCS)(2)center dot MeOH. The complex has a pentagonal-bipyramidal coordination geometry, with pentadentate N(3)O(2) ligand in the equatorial plane and two isothiocyanato groups in the axial positions. Both the ligand and the complex are characterized by their FT-IR spectra and thermal data. (C) 2010 Elsevier B.V. All rights reserved.",
journal = "Inorganic Chemistry Communications",
title = "Transition metal complexes with Girard reagent-based ligands. Part V. Synthesis, characterization and crystal structure of pentagonal-bipyramidal manganese(II) complex with 2,6-diacetylpyridine bis(Girard-T hydrazone)",
volume = "13",
number = "9",
pages = "1085-1088",
doi = "10.1016/j.inoche.2010.06.022"
}

Vojinović-Ješić, L. S., Češljević, V. I., Bogdanović, G. A., Leovac, V. M., Szecsenyi, K. M., Divjakovic, V.,& Joksović, M. D.. (2010). Transition metal complexes with Girard reagent-based ligands. Part V. Synthesis, characterization and crystal structure of pentagonal-bipyramidal manganese(II) complex with 2,6-diacetylpyridine bis(Girard-T hydrazone). in Inorganic Chemistry Communications, 13(9), 1085-1088.
https://doi.org/10.1016/j.inoche.2010.06.022

Vojinović-Ješić LS, Češljević VI, Bogdanović GA, Leovac VM, Szecsenyi KM, Divjakovic V, Joksović MD. Transition metal complexes with Girard reagent-based ligands. Part V. Synthesis, characterization and crystal structure of pentagonal-bipyramidal manganese(II) complex with 2,6-diacetylpyridine bis(Girard-T hydrazone). in Inorganic Chemistry Communications. 2010;13(9):1085-1088.
doi:10.1016/j.inoche.2010.06.022 .

Vojinović-Ješić, Ljiljana S., Češljević, Valerija I., Bogdanović, Goran A., Leovac, Vukadin M., Szecsenyi, Katalin Meszaros, Divjakovic, Vladimir, Joksović, Milan D., "Transition metal complexes with Girard reagent-based ligands. Part V. Synthesis, characterization and crystal structure of pentagonal-bipyramidal manganese(II) complex with 2,6-diacetylpyridine bis(Girard-T hydrazone)" in Inorganic Chemistry Communications, 13, no. 9 (2010):1085-1088,
https://doi.org/10.1016/j.inoche.2010.06.022 . .

TY  - JOUR
AU  - Jaćimović, Željko K.
AU  - Leovac, Vukadin M.
AU  - Francuski, Đorđe D.
AU  - Drašković, Bojana M.
AU  - Bogdanović, Goran A.
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3882
AB  - C6H10Cl2CuN4, monoclinic, P2(1)/n (no. 14), a = 7.316(2) angstrom b = 16.002(2) angstrom, c = 9.202(6) angstrom, beta = 113.15 (2)degrees, V = 990.6 angstrom(3), Z = 4, R-gt(F) = 0.054, wR(ref)(F-2) = 0.125, T = 293 K.
T2  - Zeitschrift fur Kristallographie = New Crystal Structures
T1  - Crystal structure of dicholoro-(3,5-dimethyl-1H-pyrazole-1-carboxamidine-N, N′)copper(II), Cu(C6H10N4)Cl2
VL  - 224
IS  - 4
SP  - 569
EP  - 570
DO  - 10.1524/ncrs.2009.0249
ER  - 

@article{
author = "Jaćimović, Željko K. and Leovac, Vukadin M. and Francuski, Đorđe D. and Drašković, Bojana M. and Bogdanović, Goran A.",
year = "2009",
abstract = "C6H10Cl2CuN4, monoclinic, P2(1)/n (no. 14), a = 7.316(2) angstrom b = 16.002(2) angstrom, c = 9.202(6) angstrom, beta = 113.15 (2)degrees, V = 990.6 angstrom(3), Z = 4, R-gt(F) = 0.054, wR(ref)(F-2) = 0.125, T = 293 K.",
journal = "Zeitschrift fur Kristallographie = New Crystal Structures",
title = "Crystal structure of dicholoro-(3,5-dimethyl-1H-pyrazole-1-carboxamidine-N, N′)copper(II), Cu(C6H10N4)Cl2",
volume = "224",
number = "4",
pages = "569-570",
doi = "10.1524/ncrs.2009.0249"
}

Jaćimović, Ž. K., Leovac, V. M., Francuski, Đ. D., Drašković, B. M.,& Bogdanović, G. A.. (2009). Crystal structure of dicholoro-(3,5-dimethyl-1H-pyrazole-1-carboxamidine-N, N′)copper(II), Cu(C6H10N4)Cl2. in Zeitschrift fur Kristallographie = New Crystal Structures, 224(4), 569-570.
https://doi.org/10.1524/ncrs.2009.0249

Jaćimović ŽK, Leovac VM, Francuski ĐD, Drašković BM, Bogdanović GA. Crystal structure of dicholoro-(3,5-dimethyl-1H-pyrazole-1-carboxamidine-N, N′)copper(II), Cu(C6H10N4)Cl2. in Zeitschrift fur Kristallographie = New Crystal Structures. 2009;224(4):569-570.
doi:10.1524/ncrs.2009.0249 .

Jaćimović, Željko K., Leovac, Vukadin M., Francuski, Đorđe D., Drašković, Bojana M., Bogdanović, Goran A., "Crystal structure of dicholoro-(3,5-dimethyl-1H-pyrazole-1-carboxamidine-N, N′)copper(II), Cu(C6H10N4)Cl2" in Zeitschrift fur Kristallographie = New Crystal Structures, 224, no. 4 (2009):569-570,
https://doi.org/10.1524/ncrs.2009.0249 . .

TY  - JOUR
AU  - Hollo, Berta
AU  - Tomić, Zoran D.
AU  - Pogany, Peter
AU  - Kovacs, Attila
AU  - Leovac, Vukadin M.
AU  - Szecsenyi, Katalin Meszaros
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3839
AB  - The complex formation of 3,5-dimethylpyrazole-1-carboxamidinium nitrate, HL center dot HNO(3) with ammine complexes of cadmium(II) halides (Cl, Br, I) and zinc(II) chloride has been investigated under self-controlled reaction conditions. The complexes have been characterized by X-ray diffraction, FT-IR spectroscopy, thermal analysis and quantum chemical calculations. In the case of cadmium bromide and iodide salts, isostructural complexes with composition of [CdX(2)(HL)(2)] were formed. With CdCl(2) a binuclear octahedral [Cd(2)(HL)(4)(mu-Cl)(2)](NO(3))(2) complex is obtained. Zinc(II) chloride with HL center dot HNO(3) gives [Zn(HL)(2)Cl]NO(3), the zinc center exhibiting severely distorted five-coordinate stereochemistry, intermediate between an ideal trigonal bipyramid and a square pyramid. The course of complex formation as well as the thermal properties of the compounds has been explained using the HSAB principle. The assignment of the FT-IR spectra was supported by DFT computations. (C) 2009 Elsevier Ltd. All rights reserved.
T2  - Polyhedron
T1  - Transition metal complexes with pyrazole-based ligands. Part 28. Synthesis, structural, DFT and thermal studies of cadmium(II) halides and zinc(II) chloride complexes with 3,5-dimethylpyrazole-1-carboxamidine
VL  - 28
IS  - 17
SP  - 3881
EP  - 3889
DO  - 10.1016/j.poly.2009.08.020
ER  - 

@article{
author = "Hollo, Berta and Tomić, Zoran D. and Pogany, Peter and Kovacs, Attila and Leovac, Vukadin M. and Szecsenyi, Katalin Meszaros",
year = "2009",
abstract = "The complex formation of 3,5-dimethylpyrazole-1-carboxamidinium nitrate, HL center dot HNO(3) with ammine complexes of cadmium(II) halides (Cl, Br, I) and zinc(II) chloride has been investigated under self-controlled reaction conditions. The complexes have been characterized by X-ray diffraction, FT-IR spectroscopy, thermal analysis and quantum chemical calculations. In the case of cadmium bromide and iodide salts, isostructural complexes with composition of [CdX(2)(HL)(2)] were formed. With CdCl(2) a binuclear octahedral [Cd(2)(HL)(4)(mu-Cl)(2)](NO(3))(2) complex is obtained. Zinc(II) chloride with HL center dot HNO(3) gives [Zn(HL)(2)Cl]NO(3), the zinc center exhibiting severely distorted five-coordinate stereochemistry, intermediate between an ideal trigonal bipyramid and a square pyramid. The course of complex formation as well as the thermal properties of the compounds has been explained using the HSAB principle. The assignment of the FT-IR spectra was supported by DFT computations. (C) 2009 Elsevier Ltd. All rights reserved.",
journal = "Polyhedron",
title = "Transition metal complexes with pyrazole-based ligands. Part 28. Synthesis, structural, DFT and thermal studies of cadmium(II) halides and zinc(II) chloride complexes with 3,5-dimethylpyrazole-1-carboxamidine",
volume = "28",
number = "17",
pages = "3881-3889",
doi = "10.1016/j.poly.2009.08.020"
}

Hollo, B., Tomić, Z. D., Pogany, P., Kovacs, A., Leovac, V. M.,& Szecsenyi, K. M.. (2009). Transition metal complexes with pyrazole-based ligands. Part 28. Synthesis, structural, DFT and thermal studies of cadmium(II) halides and zinc(II) chloride complexes with 3,5-dimethylpyrazole-1-carboxamidine. in Polyhedron, 28(17), 3881-3889.
https://doi.org/10.1016/j.poly.2009.08.020

Hollo B, Tomić ZD, Pogany P, Kovacs A, Leovac VM, Szecsenyi KM. Transition metal complexes with pyrazole-based ligands. Part 28. Synthesis, structural, DFT and thermal studies of cadmium(II) halides and zinc(II) chloride complexes with 3,5-dimethylpyrazole-1-carboxamidine. in Polyhedron. 2009;28(17):3881-3889.
doi:10.1016/j.poly.2009.08.020 .

Hollo, Berta, Tomić, Zoran D., Pogany, Peter, Kovacs, Attila, Leovac, Vukadin M., Szecsenyi, Katalin Meszaros, "Transition metal complexes with pyrazole-based ligands. Part 28. Synthesis, structural, DFT and thermal studies of cadmium(II) halides and zinc(II) chloride complexes with 3,5-dimethylpyrazole-1-carboxamidine" in Polyhedron, 28, no. 17 (2009):3881-3889,
https://doi.org/10.1016/j.poly.2009.08.020 . .

TY  - JOUR
AU  - Novaković, Slađana B.
AU  - Bogdanović, Goran A.
AU  - Brceski, Ilija D.
AU  - Leovac, Vukadin M.
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3754
AB  - The title compound, [Ni(C20H17N3OP)(N-3)], is the first complex with a semicarbazide-based ligand having a P atom as one of the donors. The influence of the P atom on the deformation of the coordination geometry of the Ni-II ion is evident but less expressed than in the cases of complexes with analogous seleno-and thiosemicarbazide ligands. The torsion angles involving the two bonds formed by the P atom within the six-membered chelate ring have the largest values [C-P-Ni-N = 24.3 (2)degrees and C-C-P-Ni = -24.2 (4)degrees], suggesting that the P atom considerably influences the conformation of the ring. Two types of N-H center dot center dot center dot N hydrogen bond connect the complex units into chains.
T2  - Acta Crystallographica. Section C: Crystal Structure Communications
T1  - Different intermolecular interactions in azido[2-(diphenylphosphino)benzaldehyde semicarbazonato-kappa P-2,N-1,O]nickel(II)
VL  - 65
SP  - M263
EP  - M265
DO  - 10.1107/S0108270109021970
ER  - 

@article{
author = "Novaković, Slađana B. and Bogdanović, Goran A. and Brceski, Ilija D. and Leovac, Vukadin M.",
year = "2009",
abstract = "The title compound, [Ni(C20H17N3OP)(N-3)], is the first complex with a semicarbazide-based ligand having a P atom as one of the donors. The influence of the P atom on the deformation of the coordination geometry of the Ni-II ion is evident but less expressed than in the cases of complexes with analogous seleno-and thiosemicarbazide ligands. The torsion angles involving the two bonds formed by the P atom within the six-membered chelate ring have the largest values [C-P-Ni-N = 24.3 (2)degrees and C-C-P-Ni = -24.2 (4)degrees], suggesting that the P atom considerably influences the conformation of the ring. Two types of N-H center dot center dot center dot N hydrogen bond connect the complex units into chains.",
journal = "Acta Crystallographica. Section C: Crystal Structure Communications",
title = "Different intermolecular interactions in azido[2-(diphenylphosphino)benzaldehyde semicarbazonato-kappa P-2,N-1,O]nickel(II)",
volume = "65",
pages = "M263-M265",
doi = "10.1107/S0108270109021970"
}

Novaković, S. B., Bogdanović, G. A., Brceski, I. D.,& Leovac, V. M.. (2009). Different intermolecular interactions in azido[2-(diphenylphosphino)benzaldehyde semicarbazonato-kappa P-2,N-1,O]nickel(II). in Acta Crystallographica. Section C: Crystal Structure Communications, 65, M263-M265.
https://doi.org/10.1107/S0108270109021970

Novaković SB, Bogdanović GA, Brceski ID, Leovac VM. Different intermolecular interactions in azido[2-(diphenylphosphino)benzaldehyde semicarbazonato-kappa P-2,N-1,O]nickel(II). in Acta Crystallographica. Section C: Crystal Structure Communications. 2009;65:M263-M265.
doi:10.1107/S0108270109021970 .

Novaković, Slađana B., Bogdanović, Goran A., Brceski, Ilija D., Leovac, Vukadin M., "Different intermolecular interactions in azido[2-(diphenylphosphino)benzaldehyde semicarbazonato-kappa P-2,N-1,O]nickel(II)" in Acta Crystallographica. Section C: Crystal Structure Communications, 65 (2009):M263-M265,
https://doi.org/10.1107/S0108270109021970 . .

TY  - JOUR
AU  - Leovac, Vukadin M.
AU  - Vojinović-Ješić, Ljiljana S.
AU  - Češljević, Valerija I.
AU  - Novaković, Slađana B.
AU  - Bogdanović, Goran A.
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3780
AB  - The title compound, [Cu(C9H13N5O2)(CH4O)](NO3)(2), consists of square-planar cationic complex units where the Cu-II centre is coordinated by an N, N, O-tridentate pyridoxal aminoguanidine Schiff base adduct and a methanol molecule. The tridentate ligand is a zwitterion exhibiting an almost planar conformation. The dihedral angles between the mean planes of the pyridoxal ring and the six-and five-membered chelate rings are all less than 2.0 degrees. The charge on the complex cation is neutralized by two nitrate counter-ions. Extensive N -H center dot center dot center dot O and C -H center dot center dot center dot O hydrogen bonding connects these ionic species and leads to the formation of layers. The pyridoxal hydroxy groups are the only fragments that deviate significantly from the flat layer structure; these groups are involved in O-H center dot center dot center dot O hydrogen bonding, connecting the layers into a three-dimensional crystal structure.
T2  - Acta Crystallographica. Section C: Crystal Structure Communications
T1  - {4-[(Carbamimidoylhydrazono)methyl-kappa N-2(1),N-4]-5-hydroxymethyl-2-methylpyridinium-3-olate-kappa O}(methanol-kappa O)copper(II) dinitrate
VL  - 65
SP  - M337
EP  - M339
DO  - 10.1107/S0108270109029023
ER  - 

@article{
author = "Leovac, Vukadin M. and Vojinović-Ješić, Ljiljana S. and Češljević, Valerija I. and Novaković, Slađana B. and Bogdanović, Goran A.",
year = "2009",
abstract = "The title compound, [Cu(C9H13N5O2)(CH4O)](NO3)(2), consists of square-planar cationic complex units where the Cu-II centre is coordinated by an N, N, O-tridentate pyridoxal aminoguanidine Schiff base adduct and a methanol molecule. The tridentate ligand is a zwitterion exhibiting an almost planar conformation. The dihedral angles between the mean planes of the pyridoxal ring and the six-and five-membered chelate rings are all less than 2.0 degrees. The charge on the complex cation is neutralized by two nitrate counter-ions. Extensive N -H center dot center dot center dot O and C -H center dot center dot center dot O hydrogen bonding connects these ionic species and leads to the formation of layers. The pyridoxal hydroxy groups are the only fragments that deviate significantly from the flat layer structure; these groups are involved in O-H center dot center dot center dot O hydrogen bonding, connecting the layers into a three-dimensional crystal structure.",
journal = "Acta Crystallographica. Section C: Crystal Structure Communications",
title = "{4-[(Carbamimidoylhydrazono)methyl-kappa N-2(1),N-4]-5-hydroxymethyl-2-methylpyridinium-3-olate-kappa O}(methanol-kappa O)copper(II) dinitrate",
volume = "65",
pages = "M337-M339",
doi = "10.1107/S0108270109029023"
}

Leovac, V. M., Vojinović-Ješić, L. S., Češljević, V. I., Novaković, S. B.,& Bogdanović, G. A.. (2009). {4-[(Carbamimidoylhydrazono)methyl-kappa N-2(1),N-4]-5-hydroxymethyl-2-methylpyridinium-3-olate-kappa O}(methanol-kappa O)copper(II) dinitrate. in Acta Crystallographica. Section C: Crystal Structure Communications, 65, M337-M339.
https://doi.org/10.1107/S0108270109029023

Leovac VM, Vojinović-Ješić LS, Češljević VI, Novaković SB, Bogdanović GA. {4-[(Carbamimidoylhydrazono)methyl-kappa N-2(1),N-4]-5-hydroxymethyl-2-methylpyridinium-3-olate-kappa O}(methanol-kappa O)copper(II) dinitrate. in Acta Crystallographica. Section C: Crystal Structure Communications. 2009;65:M337-M339.
doi:10.1107/S0108270109029023 .

Leovac, Vukadin M., Vojinović-Ješić, Ljiljana S., Češljević, Valerija I., Novaković, Slađana B., Bogdanović, Goran A., "{4-[(Carbamimidoylhydrazono)methyl-kappa N-2(1),N-4]-5-hydroxymethyl-2-methylpyridinium-3-olate-kappa O}(methanol-kappa O)copper(II) dinitrate" in Acta Crystallographica. Section C: Crystal Structure Communications, 65 (2009):M337-M339,
https://doi.org/10.1107/S0108270109029023 . .

TY  - JOUR
AU  - Jaćimović, Željko K.
AU  - Bogdanović, Goran A.
AU  - Hollo, Berta
AU  - Leovac, Vukadin M.
AU  - Szecsenyi, Katalin Meszaros
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3843
AB  - The work is concerned with the crystal and molecular structures of zinc(II) and mercury(II) complexes with 4-acetyl-3-amino-5-methylpyrazole (aamp) of the coordination formulae [Zn(NCS)(2)(aaMP)(2)] and (HaaMP)(2)[Hg(SCN)(4)]. The zinc(II) complex was obtained by the reaction of a warm methanolic solution of aamp with a mixture of zinc(II) nitrate and ammonium thiocyanate, whereas the mercury(II) complex was prepared by the reaction of a warm methanolic solution of aamp and a warm, slightly acidified aqueous solution of [Hg(SCN)(4)](2-). Both complexes have a tetrahedral geometry, which in the case of zinc complex is formed by monodentate coordination of two aamp molecules and two isothiocyanate groups. The Zn(II) and Hg(II) atoms have significantly deformed coordination geometry. In both crystal structures the pyrazole derivative has a planar form, probably stabilized by an intramolecular N-H center dot center dot center dot O hydrogen bond. Apart from the X-ray structural analysis, the isolated complexes were characterized by elemental analysis, IR spectroscopy, conductometric measurements and thermal analysis.
T2  - Journal of the Serbian Chemical Society
T1  - Transition metal complexes with pyrazole-based ligands. Part 29. Reactions of zinc(II) and mercury(II) thiocyanate with 4-acetyl-3-amino-5-methylpyrazole
VL  - 74
IS  - 11
SP  - 1259
EP  - 1271
DO  - 10.2298/JSC0911259J
ER  - 

@article{
author = "Jaćimović, Željko K. and Bogdanović, Goran A. and Hollo, Berta and Leovac, Vukadin M. and Szecsenyi, Katalin Meszaros",
year = "2009",
abstract = "The work is concerned with the crystal and molecular structures of zinc(II) and mercury(II) complexes with 4-acetyl-3-amino-5-methylpyrazole (aamp) of the coordination formulae [Zn(NCS)(2)(aaMP)(2)] and (HaaMP)(2)[Hg(SCN)(4)]. The zinc(II) complex was obtained by the reaction of a warm methanolic solution of aamp with a mixture of zinc(II) nitrate and ammonium thiocyanate, whereas the mercury(II) complex was prepared by the reaction of a warm methanolic solution of aamp and a warm, slightly acidified aqueous solution of [Hg(SCN)(4)](2-). Both complexes have a tetrahedral geometry, which in the case of zinc complex is formed by monodentate coordination of two aamp molecules and two isothiocyanate groups. The Zn(II) and Hg(II) atoms have significantly deformed coordination geometry. In both crystal structures the pyrazole derivative has a planar form, probably stabilized by an intramolecular N-H center dot center dot center dot O hydrogen bond. Apart from the X-ray structural analysis, the isolated complexes were characterized by elemental analysis, IR spectroscopy, conductometric measurements and thermal analysis.",
journal = "Journal of the Serbian Chemical Society",
title = "Transition metal complexes with pyrazole-based ligands. Part 29. Reactions of zinc(II) and mercury(II) thiocyanate with 4-acetyl-3-amino-5-methylpyrazole",
volume = "74",
number = "11",
pages = "1259-1271",
doi = "10.2298/JSC0911259J"
}

Jaćimović, Ž. K., Bogdanović, G. A., Hollo, B., Leovac, V. M.,& Szecsenyi, K. M.. (2009). Transition metal complexes with pyrazole-based ligands. Part 29. Reactions of zinc(II) and mercury(II) thiocyanate with 4-acetyl-3-amino-5-methylpyrazole. in Journal of the Serbian Chemical Society, 74(11), 1259-1271.
https://doi.org/10.2298/JSC0911259J

Jaćimović ŽK, Bogdanović GA, Hollo B, Leovac VM, Szecsenyi KM. Transition metal complexes with pyrazole-based ligands. Part 29. Reactions of zinc(II) and mercury(II) thiocyanate with 4-acetyl-3-amino-5-methylpyrazole. in Journal of the Serbian Chemical Society. 2009;74(11):1259-1271.
doi:10.2298/JSC0911259J .

Jaćimović, Željko K., Bogdanović, Goran A., Hollo, Berta, Leovac, Vukadin M., Szecsenyi, Katalin Meszaros, "Transition metal complexes with pyrazole-based ligands. Part 29. Reactions of zinc(II) and mercury(II) thiocyanate with 4-acetyl-3-amino-5-methylpyrazole" in Journal of the Serbian Chemical Society, 74, no. 11 (2009):1259-1271,
https://doi.org/10.2298/JSC0911259J . .

TY  - JOUR
AU  - Leovac, Vukadin M.
AU  - Tomić, Zoran D.
AU  - Kovacs, Attila
AU  - Joksović, Milan D.
AU  - Jovanović, Ljijana S.
AU  - Szecsenyi, Katalin Meszaros
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3352
AB  - In the reaction of Co(NO3)(2) center dot 6H(2)O with 4-acetyl-3-amino-5-methylpyrazole (aamp) two octahedral Co(II) complexes, [Co(aamp)2(H2O)(4)](NO3)(2), 1, and [Co(ampf)(MeOH)(2)NO3]NO3 (ampf= N,N-bis(4-acetyl-5-metliylpyrazole-3-yl)formamidine), 2, were obtained, depending on the reaction conditions. The presence of water in the reaction system leads to incorporation of water molecules into the crystal lattice and I was formed. In all anhydrous environment, due to addition of CH(OEt)3, the fusion of two aamp) was induced through their NH2-groups, incorporating the methine group of CH(OEt)(3). As a result, complex 2, containing an adenino-mimetic NNO pharmacophore ligand, was obtained. The crystal and molecular structure of both compounds was determined. The coordination of aamp in I was achieved through N2 of the pyrazole ring. On the contrary, in 2, an unusual coordination mode of pyrazole is found: one of the pyrazole moieties, due to steric hindrance, coordinates through the oxygen atom of the acetyl group instead of N2. The complexes were characterized by elemental analysis and electronic spectra. For 2 a comprehensive IR spectral analysis is given. The metalligand interactions in 2 are analyzed by quantum chemical computations. The desolvation mechanism of both compounds is discussed in detail. (c) 2007 Elsevier B.V. All rights reserved.
T2  - Journal of Organometallic Chemistry
T1  - Cobalt(II) complexes with disubstituted 3-aminopyrazole derivative: Mononuclear Co(II) complex with in situ prepared formamidine ligand
VL  - 693
IS  - 1
SP  - 77
EP  - 86
DO  - 10.1016/j.jorganchem.2007.10.018
ER  - 

@article{
author = "Leovac, Vukadin M. and Tomić, Zoran D. and Kovacs, Attila and Joksović, Milan D. and Jovanović, Ljijana S. and Szecsenyi, Katalin Meszaros",
year = "2008",
abstract = "In the reaction of Co(NO3)(2) center dot 6H(2)O with 4-acetyl-3-amino-5-methylpyrazole (aamp) two octahedral Co(II) complexes, [Co(aamp)2(H2O)(4)](NO3)(2), 1, and [Co(ampf)(MeOH)(2)NO3]NO3 (ampf= N,N-bis(4-acetyl-5-metliylpyrazole-3-yl)formamidine), 2, were obtained, depending on the reaction conditions. The presence of water in the reaction system leads to incorporation of water molecules into the crystal lattice and I was formed. In all anhydrous environment, due to addition of CH(OEt)3, the fusion of two aamp) was induced through their NH2-groups, incorporating the methine group of CH(OEt)(3). As a result, complex 2, containing an adenino-mimetic NNO pharmacophore ligand, was obtained. The crystal and molecular structure of both compounds was determined. The coordination of aamp in I was achieved through N2 of the pyrazole ring. On the contrary, in 2, an unusual coordination mode of pyrazole is found: one of the pyrazole moieties, due to steric hindrance, coordinates through the oxygen atom of the acetyl group instead of N2. The complexes were characterized by elemental analysis and electronic spectra. For 2 a comprehensive IR spectral analysis is given. The metalligand interactions in 2 are analyzed by quantum chemical computations. The desolvation mechanism of both compounds is discussed in detail. (c) 2007 Elsevier B.V. All rights reserved.",
journal = "Journal of Organometallic Chemistry",
title = "Cobalt(II) complexes with disubstituted 3-aminopyrazole derivative: Mononuclear Co(II) complex with in situ prepared formamidine ligand",
volume = "693",
number = "1",
pages = "77-86",
doi = "10.1016/j.jorganchem.2007.10.018"
}

Leovac, V. M., Tomić, Z. D., Kovacs, A., Joksović, M. D., Jovanović, L. S.,& Szecsenyi, K. M.. (2008). Cobalt(II) complexes with disubstituted 3-aminopyrazole derivative: Mononuclear Co(II) complex with in situ prepared formamidine ligand. in Journal of Organometallic Chemistry, 693(1), 77-86.
https://doi.org/10.1016/j.jorganchem.2007.10.018

Leovac VM, Tomić ZD, Kovacs A, Joksović MD, Jovanović LS, Szecsenyi KM. Cobalt(II) complexes with disubstituted 3-aminopyrazole derivative: Mononuclear Co(II) complex with in situ prepared formamidine ligand. in Journal of Organometallic Chemistry. 2008;693(1):77-86.
doi:10.1016/j.jorganchem.2007.10.018 .

Leovac, Vukadin M., Tomić, Zoran D., Kovacs, Attila, Joksović, Milan D., Jovanović, Ljijana S., Szecsenyi, Katalin Meszaros, "Cobalt(II) complexes with disubstituted 3-aminopyrazole derivative: Mononuclear Co(II) complex with in situ prepared formamidine ligand" in Journal of Organometallic Chemistry, 693, no. 1 (2008):77-86,
https://doi.org/10.1016/j.jorganchem.2007.10.018 . .

TY  - JOUR
AU  - Vojinović-Ješić, Ljiljana S.
AU  - Bogdanović, Goran A.
AU  - Leovac, Vukadin M.
AU  - Češljević, Valerija I.
AU  - Jovanović, Ljiljana S.
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3539
AB  - The monoligand complexes of the formula M(HPLGT)(NCS)(2) (M = Cu(II), Zn(II)) in which the ligand tridentate ONO pyridoxilidene Girard-T hydrazone, [H(3)PLGT]Cl(2) center dot 2H(2)O, was coordinated in neutral doubly deprotonated form were synthesized. Also, the first complexes with the ligand coordinated in triply deprotonated monoanionic form of the formula [Cu(PLGT)N(3)] and [Co(PLGT)(NO(2))(2)NH(3)] center dot 3H(2)O are reported. The single crystal X-ray analysis of [Cu(HPLGT)(NCS)(2)] showed that Cu(II) is placed in a square-pyramidal surrounding consisting of one tridentate Schiff base and one NCS group in the basal plane and the other NCS group in the apical position. Intermolecular hydrogen bonds leading to centrosymmetrical dimerization of these complexes were discussed. In the reaction of Girard-T and Hacac in the presence of CuCl(2), a mixture of single crystal complexes of the composition [Cu(3,5-Me(2)pz)(2)Cl(2)](2) and [Cu(acac)(2)] center dot 2[Cu(3,5-Me(2)pz)(2)Cl(2)] was obtained and X-ray analysis of the latter one was reported.
T2  - Structural Chemistry
T1  - Transition metal complexes with Girard reagent-based ligands. Part IV. Synthesis and characterization of pyridoxilidene Girard-T hydrazone complexes. Crystal structure of the copper(II) complex
VL  - 19
IS  - 5
SP  - 807
EP  - 815
DO  - 10.1007/s11224-008-9368-x
ER  - 

@article{
author = "Vojinović-Ješić, Ljiljana S. and Bogdanović, Goran A. and Leovac, Vukadin M. and Češljević, Valerija I. and Jovanović, Ljiljana S.",
year = "2008",
abstract = "The monoligand complexes of the formula M(HPLGT)(NCS)(2) (M = Cu(II), Zn(II)) in which the ligand tridentate ONO pyridoxilidene Girard-T hydrazone, [H(3)PLGT]Cl(2) center dot 2H(2)O, was coordinated in neutral doubly deprotonated form were synthesized. Also, the first complexes with the ligand coordinated in triply deprotonated monoanionic form of the formula [Cu(PLGT)N(3)] and [Co(PLGT)(NO(2))(2)NH(3)] center dot 3H(2)O are reported. The single crystal X-ray analysis of [Cu(HPLGT)(NCS)(2)] showed that Cu(II) is placed in a square-pyramidal surrounding consisting of one tridentate Schiff base and one NCS group in the basal plane and the other NCS group in the apical position. Intermolecular hydrogen bonds leading to centrosymmetrical dimerization of these complexes were discussed. In the reaction of Girard-T and Hacac in the presence of CuCl(2), a mixture of single crystal complexes of the composition [Cu(3,5-Me(2)pz)(2)Cl(2)](2) and [Cu(acac)(2)] center dot 2[Cu(3,5-Me(2)pz)(2)Cl(2)] was obtained and X-ray analysis of the latter one was reported.",
journal = "Structural Chemistry",
title = "Transition metal complexes with Girard reagent-based ligands. Part IV. Synthesis and characterization of pyridoxilidene Girard-T hydrazone complexes. Crystal structure of the copper(II) complex",
volume = "19",
number = "5",
pages = "807-815",
doi = "10.1007/s11224-008-9368-x"
}

Vojinović-Ješić, L. S., Bogdanović, G. A., Leovac, V. M., Češljević, V. I.,& Jovanović, L. S.. (2008). Transition metal complexes with Girard reagent-based ligands. Part IV. Synthesis and characterization of pyridoxilidene Girard-T hydrazone complexes. Crystal structure of the copper(II) complex. in Structural Chemistry, 19(5), 807-815.
https://doi.org/10.1007/s11224-008-9368-x

Vojinović-Ješić LS, Bogdanović GA, Leovac VM, Češljević VI, Jovanović LS. Transition metal complexes with Girard reagent-based ligands. Part IV. Synthesis and characterization of pyridoxilidene Girard-T hydrazone complexes. Crystal structure of the copper(II) complex. in Structural Chemistry. 2008;19(5):807-815.
doi:10.1007/s11224-008-9368-x .

Vojinović-Ješić, Ljiljana S., Bogdanović, Goran A., Leovac, Vukadin M., Češljević, Valerija I., Jovanović, Ljiljana S., "Transition metal complexes with Girard reagent-based ligands. Part IV. Synthesis and characterization of pyridoxilidene Girard-T hydrazone complexes. Crystal structure of the copper(II) complex" in Structural Chemistry, 19, no. 5 (2008):807-815,
https://doi.org/10.1007/s11224-008-9368-x . .

TY  - JOUR
AU  - Tomić, Zoran D.
AU  - Kapor, Agneš
AU  - Zmiric, Aleksandra
AU  - Leovac, Vukadin M.
AU  - Zobel, Dieter
AU  - Zarić, Snežana D.
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3194
AB  - Three closely related [MoO(2)(L)(ML)] complexes, where L is the 2-hydroxy-1-naphthaldehyde-S-methylisothiosemicarbazone ligand, and ML is EtOH (I), Py (II) and DMSO (III), were synthesized, characterized by NMR and IR spectra, and their X-ray crystal structures were determined. The crystal structure properties of these three closely related complexes were compared. Two cis-Mo-O bond lengths were almost the same in the crystal structure of complexes II and III, while in complex I a significant difference between the two cis-Mo-O bond lengths was observed. At the same time, the geometry of L ligand in complex I is different, compared to II and III. DFT calculations on the isolated molecule I, as well as geometrical analysis of the complexes indicate that intramolecular interactions are not responsible for these structural differences. On the other hand, the pattern of intermolecular contacts in the crystal structure of I differs from those observed in II and III. Analyses indicate that differences in cis-Mo-O bond lengths and in the geometry of ligand L could be related to intermolecular interactions. These results suggest the possibility that in enzymes oxotransferases or in their model systems, the Mo-O bond length could be designed by the interactions of chelate ligands with the surroundings. (C) 2006 Elsevier B.V. All rights reserved.
T2  - Inorganica Chimica Acta
T1  - Comparison of structural features of three new cis-dioxomolybdenum(VI) complexes with 2-hydroxy-1-naphthaldehyde-S-methylisothiosemicarbazone: Possible role of intermolecular interactions on the geometry of the cis-MoO(2) unit
VL  - 360
IS  - 7
SP  - 2197
EP  - 2206
DO  - 10.1016/j.ica.2006.10.026
ER  - 

@article{
author = "Tomić, Zoran D. and Kapor, Agneš and Zmiric, Aleksandra and Leovac, Vukadin M. and Zobel, Dieter and Zarić, Snežana D.",
year = "2007",
abstract = "Three closely related [MoO(2)(L)(ML)] complexes, where L is the 2-hydroxy-1-naphthaldehyde-S-methylisothiosemicarbazone ligand, and ML is EtOH (I), Py (II) and DMSO (III), were synthesized, characterized by NMR and IR spectra, and their X-ray crystal structures were determined. The crystal structure properties of these three closely related complexes were compared. Two cis-Mo-O bond lengths were almost the same in the crystal structure of complexes II and III, while in complex I a significant difference between the two cis-Mo-O bond lengths was observed. At the same time, the geometry of L ligand in complex I is different, compared to II and III. DFT calculations on the isolated molecule I, as well as geometrical analysis of the complexes indicate that intramolecular interactions are not responsible for these structural differences. On the other hand, the pattern of intermolecular contacts in the crystal structure of I differs from those observed in II and III. Analyses indicate that differences in cis-Mo-O bond lengths and in the geometry of ligand L could be related to intermolecular interactions. These results suggest the possibility that in enzymes oxotransferases or in their model systems, the Mo-O bond length could be designed by the interactions of chelate ligands with the surroundings. (C) 2006 Elsevier B.V. All rights reserved.",
journal = "Inorganica Chimica Acta",
title = "Comparison of structural features of three new cis-dioxomolybdenum(VI) complexes with 2-hydroxy-1-naphthaldehyde-S-methylisothiosemicarbazone: Possible role of intermolecular interactions on the geometry of the cis-MoO(2) unit",
volume = "360",
number = "7",
pages = "2197-2206",
doi = "10.1016/j.ica.2006.10.026"
}

Tomić, Z. D., Kapor, A., Zmiric, A., Leovac, V. M., Zobel, D.,& Zarić, S. D.. (2007). Comparison of structural features of three new cis-dioxomolybdenum(VI) complexes with 2-hydroxy-1-naphthaldehyde-S-methylisothiosemicarbazone: Possible role of intermolecular interactions on the geometry of the cis-MoO(2) unit. in Inorganica Chimica Acta, 360(7), 2197-2206.
https://doi.org/10.1016/j.ica.2006.10.026

Tomić ZD, Kapor A, Zmiric A, Leovac VM, Zobel D, Zarić SD. Comparison of structural features of three new cis-dioxomolybdenum(VI) complexes with 2-hydroxy-1-naphthaldehyde-S-methylisothiosemicarbazone: Possible role of intermolecular interactions on the geometry of the cis-MoO(2) unit. in Inorganica Chimica Acta. 2007;360(7):2197-2206.
doi:10.1016/j.ica.2006.10.026 .

Tomić, Zoran D., Kapor, Agneš, Zmiric, Aleksandra, Leovac, Vukadin M., Zobel, Dieter, Zarić, Snežana D., "Comparison of structural features of three new cis-dioxomolybdenum(VI) complexes with 2-hydroxy-1-naphthaldehyde-S-methylisothiosemicarbazone: Possible role of intermolecular interactions on the geometry of the cis-MoO(2) unit" in Inorganica Chimica Acta, 360, no. 7 (2007):2197-2206,
https://doi.org/10.1016/j.ica.2006.10.026 . .

TY  - JOUR
AU  - Kovacs, Attila
AU  - Meszaros Szecsenyi, Katalin
AU  - Leovac, Vukadin M.
AU  - Tomić, Zoran D.
AU  - Pokol, Gyoergy
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3200
AB  - The trinuclear [Zn-3(Hdmpz)(2)(dmpz)(4)(NCS)(2)] complex (Hdmpz: 3,5-dimethylpyrazole) has been synthesized by the reaction of tetraamminezinc(II) chloride with 3,5-dimethyl-1-thiocarboxamidepyrazole. The ammonia evolving gradually from [Zn(NH3)(4)]Cl-2 ensured a mild gradually increasing basic pH during the synthesis which caused a cleavage of the 1-N-substituent. Moreover, the changing pH controlled the pyrazolate anion-neutral ligand equilibrium, and in this way the formation of the precipitate complex. The structure of the complex was investigated by X-ray diffraction and quantum chemical computations. The complex was characterized in detail by FT-IR-spectroscopy and thermal analysis. The bonding interactions between Zn2+ and the ligands were analysed on the basis of the computed data. (c) 2007 Elsevier B.V. All rights reserved.
T2  - Journal of Organometallic Chemistry
T1  - Synthesis under self-controlled reaction conditions: Reaction of tetraamminezinc(II) chloride with 3,5-dimethyl-1-thiocarboxamide pyrazole
VL  - 692
IS  - 12
SP  - 2582
EP  - 2592
DO  - 10.1016/j.jorganchem.2007.03.003
ER  - 

@article{
author = "Kovacs, Attila and Meszaros Szecsenyi, Katalin and Leovac, Vukadin M. and Tomić, Zoran D. and Pokol, Gyoergy",
year = "2007",
abstract = "The trinuclear [Zn-3(Hdmpz)(2)(dmpz)(4)(NCS)(2)] complex (Hdmpz: 3,5-dimethylpyrazole) has been synthesized by the reaction of tetraamminezinc(II) chloride with 3,5-dimethyl-1-thiocarboxamidepyrazole. The ammonia evolving gradually from [Zn(NH3)(4)]Cl-2 ensured a mild gradually increasing basic pH during the synthesis which caused a cleavage of the 1-N-substituent. Moreover, the changing pH controlled the pyrazolate anion-neutral ligand equilibrium, and in this way the formation of the precipitate complex. The structure of the complex was investigated by X-ray diffraction and quantum chemical computations. The complex was characterized in detail by FT-IR-spectroscopy and thermal analysis. The bonding interactions between Zn2+ and the ligands were analysed on the basis of the computed data. (c) 2007 Elsevier B.V. All rights reserved.",
journal = "Journal of Organometallic Chemistry",
title = "Synthesis under self-controlled reaction conditions: Reaction of tetraamminezinc(II) chloride with 3,5-dimethyl-1-thiocarboxamide pyrazole",
volume = "692",
number = "12",
pages = "2582-2592",
doi = "10.1016/j.jorganchem.2007.03.003"
}

Kovacs, A., Meszaros Szecsenyi, K., Leovac, V. M., Tomić, Z. D.,& Pokol, G.. (2007). Synthesis under self-controlled reaction conditions: Reaction of tetraamminezinc(II) chloride with 3,5-dimethyl-1-thiocarboxamide pyrazole. in Journal of Organometallic Chemistry, 692(12), 2582-2592.
https://doi.org/10.1016/j.jorganchem.2007.03.003

Kovacs A, Meszaros Szecsenyi K, Leovac VM, Tomić ZD, Pokol G. Synthesis under self-controlled reaction conditions: Reaction of tetraamminezinc(II) chloride with 3,5-dimethyl-1-thiocarboxamide pyrazole. in Journal of Organometallic Chemistry. 2007;692(12):2582-2592.
doi:10.1016/j.jorganchem.2007.03.003 .

Kovacs, Attila, Meszaros Szecsenyi, Katalin, Leovac, Vukadin M., Tomić, Zoran D., Pokol, Gyoergy, "Synthesis under self-controlled reaction conditions: Reaction of tetraamminezinc(II) chloride with 3,5-dimethyl-1-thiocarboxamide pyrazole" in Journal of Organometallic Chemistry, 692, no. 12 (2007):2582-2592,
https://doi.org/10.1016/j.jorganchem.2007.03.003 . .

TY  - JOUR
AU  - Jaćimović, Željko K.
AU  - Leovac, Vukadin M.
AU  - Tomić, Zoran D.
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3341
AB  - C28H56Cl6Cu4N8O5, triclinic, P (1) over bar (no. 2), a = 8.863(1) angstrom, b = 13.939(8) angstrom, c = 17.06(1) angstrom, alpha = 81.67(5)degrees, beta = 85.68(3)degrees, gamma = 84.91(3)degrees, V = 2073.0 angstrom(3), Z = 2, R-gt(F) = 0.080, wR(ref)(F-2) = 0.194, T = 293 K.
T2  - Zeitschrift fur Kristallographie = New Crystal Structures
T1  - Crystal structure of hexakis(mu(2)-chloro)-mu(4)-oxo-tetrakis((3,5-dimethylpyrazole)copper(II)) ethanol tetrasolvate,Cu4OCl6(C5H8N2)(4)center dot 4C(2)H(5)OH
VL  - 222
IS  - 3
SP  - 246
EP  - 248
DO  - 10.1524/ncrs.2007.0103
ER  - 

@article{
author = "Jaćimović, Željko K. and Leovac, Vukadin M. and Tomić, Zoran D.",
year = "2007",
abstract = "C28H56Cl6Cu4N8O5, triclinic, P (1) over bar (no. 2), a = 8.863(1) angstrom, b = 13.939(8) angstrom, c = 17.06(1) angstrom, alpha = 81.67(5)degrees, beta = 85.68(3)degrees, gamma = 84.91(3)degrees, V = 2073.0 angstrom(3), Z = 2, R-gt(F) = 0.080, wR(ref)(F-2) = 0.194, T = 293 K.",
journal = "Zeitschrift fur Kristallographie = New Crystal Structures",
title = "Crystal structure of hexakis(mu(2)-chloro)-mu(4)-oxo-tetrakis((3,5-dimethylpyrazole)copper(II)) ethanol tetrasolvate,Cu4OCl6(C5H8N2)(4)center dot 4C(2)H(5)OH",
volume = "222",
number = "3",
pages = "246-248",
doi = "10.1524/ncrs.2007.0103"
}

Jaćimović, Ž. K., Leovac, V. M.,& Tomić, Z. D.. (2007). Crystal structure of hexakis(mu(2)-chloro)-mu(4)-oxo-tetrakis((3,5-dimethylpyrazole)copper(II)) ethanol tetrasolvate,Cu4OCl6(C5H8N2)(4)center dot 4C(2)H(5)OH. in Zeitschrift fur Kristallographie = New Crystal Structures, 222(3), 246-248.
https://doi.org/10.1524/ncrs.2007.0103

Jaćimović ŽK, Leovac VM, Tomić ZD. Crystal structure of hexakis(mu(2)-chloro)-mu(4)-oxo-tetrakis((3,5-dimethylpyrazole)copper(II)) ethanol tetrasolvate,Cu4OCl6(C5H8N2)(4)center dot 4C(2)H(5)OH. in Zeitschrift fur Kristallographie = New Crystal Structures. 2007;222(3):246-248.
doi:10.1524/ncrs.2007.0103 .

Jaćimović, Željko K., Leovac, Vukadin M., Tomić, Zoran D., "Crystal structure of hexakis(mu(2)-chloro)-mu(4)-oxo-tetrakis((3,5-dimethylpyrazole)copper(II)) ethanol tetrasolvate,Cu4OCl6(C5H8N2)(4)center dot 4C(2)H(5)OH" in Zeitschrift fur Kristallographie = New Crystal Structures, 222, no. 3 (2007):246-248,
https://doi.org/10.1524/ncrs.2007.0103 . .

TY  - JOUR
AU  - Leovac, Vukadin M.
AU  - Tomić, Zoran D.
AU  - Szecsenyi, Katalin Meszaros
AU  - Jovanović, Ljiljana S.
AU  - Joksović, Milan D.
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3344
AB  - The crystal and molecular structures of four tetrahedral structurally similar [Co(aamp)(2)X-2] complexes (aamp = 4-acetyl-3-amino-5-methylpyrazole, X = Cl, Br, I and NCS) were determined by X-ray diffraction analysis and are discussed in detail. It was found that the different capacity of the ligand X (NCS vs. Cl, Br, I) for the formation of non-bonding contacts influence the mode of molecular association in the solid state. The complexes were characterized by UV-Vis spectroscopy. The first step of the thermal decomposition of the compounds was checked and is discussed in the view of the IR spectrum of the intermediate isolated from [Co(aamp)(2)Br-2] by the quasi-isothermal technique.
T2  - Journal of the Serbian Chemical Society
T1  - Transition metal complexes with pyrazole based ligands. Part 27. Structural and thermal characterization of cobalt(II) halide and pseudohalide complexes with 4-acetyl-3-amino-5-methylpyrazole
VL  - 72
IS  - 12
SP  - 1281
EP  - 1293
DO  - 10.2298/JSC0712281L
ER  - 

@article{
author = "Leovac, Vukadin M. and Tomić, Zoran D. and Szecsenyi, Katalin Meszaros and Jovanović, Ljiljana S. and Joksović, Milan D.",
year = "2007",
abstract = "The crystal and molecular structures of four tetrahedral structurally similar [Co(aamp)(2)X-2] complexes (aamp = 4-acetyl-3-amino-5-methylpyrazole, X = Cl, Br, I and NCS) were determined by X-ray diffraction analysis and are discussed in detail. It was found that the different capacity of the ligand X (NCS vs. Cl, Br, I) for the formation of non-bonding contacts influence the mode of molecular association in the solid state. The complexes were characterized by UV-Vis spectroscopy. The first step of the thermal decomposition of the compounds was checked and is discussed in the view of the IR spectrum of the intermediate isolated from [Co(aamp)(2)Br-2] by the quasi-isothermal technique.",
journal = "Journal of the Serbian Chemical Society",
title = "Transition metal complexes with pyrazole based ligands. Part 27. Structural and thermal characterization of cobalt(II) halide and pseudohalide complexes with 4-acetyl-3-amino-5-methylpyrazole",
volume = "72",
number = "12",
pages = "1281-1293",
doi = "10.2298/JSC0712281L"
}

Leovac, V. M., Tomić, Z. D., Szecsenyi, K. M., Jovanović, L. S.,& Joksović, M. D.. (2007). Transition metal complexes with pyrazole based ligands. Part 27. Structural and thermal characterization of cobalt(II) halide and pseudohalide complexes with 4-acetyl-3-amino-5-methylpyrazole. in Journal of the Serbian Chemical Society, 72(12), 1281-1293.
https://doi.org/10.2298/JSC0712281L

Leovac VM, Tomić ZD, Szecsenyi KM, Jovanović LS, Joksović MD. Transition metal complexes with pyrazole based ligands. Part 27. Structural and thermal characterization of cobalt(II) halide and pseudohalide complexes with 4-acetyl-3-amino-5-methylpyrazole. in Journal of the Serbian Chemical Society. 2007;72(12):1281-1293.
doi:10.2298/JSC0712281L .

Leovac, Vukadin M., Tomić, Zoran D., Szecsenyi, Katalin Meszaros, Jovanović, Ljiljana S., Joksović, Milan D., "Transition metal complexes with pyrazole based ligands. Part 27. Structural and thermal characterization of cobalt(II) halide and pseudohalide complexes with 4-acetyl-3-amino-5-methylpyrazole" in Journal of the Serbian Chemical Society, 72, no. 12 (2007):1281-1293,
https://doi.org/10.2298/JSC0712281L . .

TY  - JOUR
AU  - Jaćimović, Željko K.
AU  - Radović, Ana
AU  - Leovac, Vukadin M.
AU  - Tomić, Zoran D.
AU  - Radosavjević Evans, Ivana
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3397
AB  - C30H48Cl2N14Ni2O2S6, monoclinic, P12/c1 (no. 14), a = 12.0407(7) angstrom,k, b = 11.8861(6) angstrom, c = 15.7389(9) angstrom, beta = 93.904(1)degrees, V = 2247.3 angstrom(3) Z = 2, R-gt(F) = 0.032, wR(ref) f(F-2) = 0.069, T = 120.
T2  - Zeitschrift fur Kristallographie = New Crystal Structures
T1  - Crystal structure of bis(mu(2)-thiocyanato)tetrakis(3,5-dimethyl-t(thiocarbamoy)pyrazole)dinickel(II) dichloride ethanol disolvate, [Ni(NCS)(2)(C6H6N3S)(4)] [Cl](2)center dot 2C(2)H(5)OH
VL  - 222
IS  - 4
SP  - 430
EP  - 432
DO  - 10.1524/ncrs.2007.0182
ER  - 

@article{
author = "Jaćimović, Željko K. and Radović, Ana and Leovac, Vukadin M. and Tomić, Zoran D. and Radosavjević Evans, Ivana",
year = "2007",
abstract = "C30H48Cl2N14Ni2O2S6, monoclinic, P12/c1 (no. 14), a = 12.0407(7) angstrom,k, b = 11.8861(6) angstrom, c = 15.7389(9) angstrom, beta = 93.904(1)degrees, V = 2247.3 angstrom(3) Z = 2, R-gt(F) = 0.032, wR(ref) f(F-2) = 0.069, T = 120.",
journal = "Zeitschrift fur Kristallographie = New Crystal Structures",
title = "Crystal structure of bis(mu(2)-thiocyanato)tetrakis(3,5-dimethyl-t(thiocarbamoy)pyrazole)dinickel(II) dichloride ethanol disolvate, [Ni(NCS)(2)(C6H6N3S)(4)] [Cl](2)center dot 2C(2)H(5)OH",
volume = "222",
number = "4",
pages = "430-432",
doi = "10.1524/ncrs.2007.0182"
}

Jaćimović, Ž. K., Radović, A., Leovac, V. M., Tomić, Z. D.,& Radosavjević Evans, I.. (2007). Crystal structure of bis(mu(2)-thiocyanato)tetrakis(3,5-dimethyl-t(thiocarbamoy)pyrazole)dinickel(II) dichloride ethanol disolvate, [Ni(NCS)(2)(C6H6N3S)(4)] [Cl](2)center dot 2C(2)H(5)OH. in Zeitschrift fur Kristallographie = New Crystal Structures, 222(4), 430-432.
https://doi.org/10.1524/ncrs.2007.0182

Jaćimović ŽK, Radović A, Leovac VM, Tomić ZD, Radosavjević Evans I. Crystal structure of bis(mu(2)-thiocyanato)tetrakis(3,5-dimethyl-t(thiocarbamoy)pyrazole)dinickel(II) dichloride ethanol disolvate, [Ni(NCS)(2)(C6H6N3S)(4)] [Cl](2)center dot 2C(2)H(5)OH. in Zeitschrift fur Kristallographie = New Crystal Structures. 2007;222(4):430-432.
doi:10.1524/ncrs.2007.0182 .

Jaćimović, Željko K., Radović, Ana, Leovac, Vukadin M., Tomić, Zoran D., Radosavjević Evans, Ivana, "Crystal structure of bis(mu(2)-thiocyanato)tetrakis(3,5-dimethyl-t(thiocarbamoy)pyrazole)dinickel(II) dichloride ethanol disolvate, [Ni(NCS)(2)(C6H6N3S)(4)] [Cl](2)center dot 2C(2)H(5)OH" in Zeitschrift fur Kristallographie = New Crystal Structures, 222, no. 4 (2007):430-432,
https://doi.org/10.1524/ncrs.2007.0182 . .