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, Berta Barta
AU  - Szecsenyi, Katalin Meszaros
AU  - Deli, Maria
AU  - Kiss, Lorand
AU  - Kallay-Menyhard, Alfred
AU  - Zivkovic-Radovanovic, Vukosava
AU  - Tomić, Zoran D.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1184
AB  - Synthetic paths toward the two polymorphs of a monohydrate, one anhydrous polymorph of 1-carboxamidino-5-hydroxy-3-methylpyrazole (hcmp) and two polymorphs of zinc complexes containing hcmp ligand are presented. By choosing ions which are not part of the final product, it is possible to direct the synthesis toward the particular polymorph. In all three modifications of hcmp, the same hydrogen bonding motif appears, leading to formation of similar molecular chains. Differences arise due to different modes of chain aggregation and the presence of solvent water. Analysis of the crystal packing and the energetic features of hcmp polymorphs is made using the PIXEL model. The thermal decomposition processes are examined using differential scanning calorimetry and thermogravimetry. Analysis of crystal packing in the two polymorphs of zinc complex suggests the key role of the hydrogen bonding capacity of the aqua ligand for the appearance of the two polymorphic forms. In both polymorphs of zinc complex, stacking interactions have an important role. However, the enhanced hydrogen bonding capacity of the aqua ligand influences the formation of multistacking arrangement.
T2  - Structural Chemistry
T1  - Anion-/cation-directed reaction routes to polymorphic forms of a pyrazole-type ligand and its coordination compounds with zinc. Key structural differences between polymorphs
VL  - 27
IS  - 4
SP  - 1121
EP  - 1133
DO  - 10.1007/s11224-015-0734-1
ER  - 

@article{
author = "Hollo, Berta Barta and Szecsenyi, Katalin Meszaros and Deli, Maria and Kiss, Lorand and Kallay-Menyhard, Alfred and Zivkovic-Radovanovic, Vukosava and Tomić, Zoran D.",
year = "2016",
abstract = "Synthetic paths toward the two polymorphs of a monohydrate, one anhydrous polymorph of 1-carboxamidino-5-hydroxy-3-methylpyrazole (hcmp) and two polymorphs of zinc complexes containing hcmp ligand are presented. By choosing ions which are not part of the final product, it is possible to direct the synthesis toward the particular polymorph. In all three modifications of hcmp, the same hydrogen bonding motif appears, leading to formation of similar molecular chains. Differences arise due to different modes of chain aggregation and the presence of solvent water. Analysis of the crystal packing and the energetic features of hcmp polymorphs is made using the PIXEL model. The thermal decomposition processes are examined using differential scanning calorimetry and thermogravimetry. Analysis of crystal packing in the two polymorphs of zinc complex suggests the key role of the hydrogen bonding capacity of the aqua ligand for the appearance of the two polymorphic forms. In both polymorphs of zinc complex, stacking interactions have an important role. However, the enhanced hydrogen bonding capacity of the aqua ligand influences the formation of multistacking arrangement.",
journal = "Structural Chemistry",
title = "Anion-/cation-directed reaction routes to polymorphic forms of a pyrazole-type ligand and its coordination compounds with zinc. Key structural differences between polymorphs",
volume = "27",
number = "4",
pages = "1121-1133",
doi = "10.1007/s11224-015-0734-1"
}

Hollo, B. B., Szecsenyi, K. M., Deli, M., Kiss, L., Kallay-Menyhard, A., Zivkovic-Radovanovic, V.,& Tomić, Z. D.. (2016). Anion-/cation-directed reaction routes to polymorphic forms of a pyrazole-type ligand and its coordination compounds with zinc. Key structural differences between polymorphs. in Structural Chemistry, 27(4), 1121-1133.
https://doi.org/10.1007/s11224-015-0734-1

Hollo BB, Szecsenyi KM, Deli M, Kiss L, Kallay-Menyhard A, Zivkovic-Radovanovic V, Tomić ZD. Anion-/cation-directed reaction routes to polymorphic forms of a pyrazole-type ligand and its coordination compounds with zinc. Key structural differences between polymorphs. in Structural Chemistry. 2016;27(4):1121-1133.
doi:10.1007/s11224-015-0734-1 .

Hollo, Berta Barta, Szecsenyi, Katalin Meszaros, Deli, Maria, Kiss, Lorand, Kallay-Menyhard, Alfred, Zivkovic-Radovanovic, Vukosava, Tomić, Zoran D., "Anion-/cation-directed reaction routes to polymorphic forms of a pyrazole-type ligand and its coordination compounds with zinc. Key structural differences between polymorphs" in Structural Chemistry, 27, no. 4 (2016):1121-1133,
https://doi.org/10.1007/s11224-015-0734-1 . .