TY  - JOUR
AU  - Simović, Bojana
AU  - Poleti, Dejan
AU  - Golubović, Aleksandar V.
AU  - Matković, Aleksandar
AU  - Šćepanović, Maja
AU  - Babić, Biljana M.
AU  - Branković, Goran O.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1523
AB  - In this work, Zn(CH3 COO)(2) 2 H-2 O with AgNO3 content from 0 to 6 mol% was solvothermally treated at 120 C for 18 h in the presence of poly(vinyl pyrrolidone), ethylene glycol and sodium hydroxide. The structural , microstructural and photocatalytic properties of the unmodified and Ag modified ZnO powders have been investigated by the XRPD, FESEM, TEM, UV-vis, Raman and BET techniques. The Ag modified samples consist of ZnO nanocrystals and metallic Ag on the surface. The average crystallite size of all samples was about 20 nm. The FESEM revealed the uniformity in size and approximately spherical shape of ZnO nanopar-ticles. The BET data suggest that all prepared samples are mesoporous. All prepared samples showed higher photocatalytic efficiency in the degradation of the Reactive Orange 16 (RO16) azo dye than the commercial ZnO. In addition, Ag modified ZnO powders, especially those with 1.5 and 0.75 mol% of Ag, were more efficient than the unmodified one.
T2  - Processing and Application of Ceramics
T1  - Enhanced photocatalytic degradation of RO16 dye using Ag modified ZnO nanopowders prepared by the solvothermal method
VL  - 11
IS  - 1
SP  - 27
EP  - 38
DO  - 10.2298/PAC1701027S
ER  - 

@article{
author = "Simović, Bojana and Poleti, Dejan and Golubović, Aleksandar V. and Matković, Aleksandar and Šćepanović, Maja and Babić, Biljana M. and Branković, Goran O.",
year = "2017",
abstract = "In this work, Zn(CH3 COO)(2) 2 H-2 O with AgNO3 content from 0 to 6 mol% was solvothermally treated at 120 C for 18 h in the presence of poly(vinyl pyrrolidone), ethylene glycol and sodium hydroxide. The structural , microstructural and photocatalytic properties of the unmodified and Ag modified ZnO powders have been investigated by the XRPD, FESEM, TEM, UV-vis, Raman and BET techniques. The Ag modified samples consist of ZnO nanocrystals and metallic Ag on the surface. The average crystallite size of all samples was about 20 nm. The FESEM revealed the uniformity in size and approximately spherical shape of ZnO nanopar-ticles. The BET data suggest that all prepared samples are mesoporous. All prepared samples showed higher photocatalytic efficiency in the degradation of the Reactive Orange 16 (RO16) azo dye than the commercial ZnO. In addition, Ag modified ZnO powders, especially those with 1.5 and 0.75 mol% of Ag, were more efficient than the unmodified one.",
journal = "Processing and Application of Ceramics",
title = "Enhanced photocatalytic degradation of RO16 dye using Ag modified ZnO nanopowders prepared by the solvothermal method",
volume = "11",
number = "1",
pages = "27-38",
doi = "10.2298/PAC1701027S"
}

Simović, B., Poleti, D., Golubović, A. V., Matković, A., Šćepanović, M., Babić, B. M.,& Branković, G. O.. (2017). Enhanced photocatalytic degradation of RO16 dye using Ag modified ZnO nanopowders prepared by the solvothermal method. in Processing and Application of Ceramics, 11(1), 27-38.
https://doi.org/10.2298/PAC1701027S

Simović B, Poleti D, Golubović AV, Matković A, Šćepanović M, Babić BM, Branković GO. Enhanced photocatalytic degradation of RO16 dye using Ag modified ZnO nanopowders prepared by the solvothermal method. in Processing and Application of Ceramics. 2017;11(1):27-38.
doi:10.2298/PAC1701027S .

Simović, Bojana, Poleti, Dejan, Golubović, Aleksandar V., Matković, Aleksandar, Šćepanović, Maja, Babić, Biljana M., Branković, Goran O., "Enhanced photocatalytic degradation of RO16 dye using Ag modified ZnO nanopowders prepared by the solvothermal method" in Processing and Application of Ceramics, 11, no. 1 (2017):27-38,
https://doi.org/10.2298/PAC1701027S . .

TY  - JOUR
AU  - Ilić, Svetlana M.
AU  - Zec, Slavica
AU  - Miljkovic, M.
AU  - Poleti, Dejan
AU  - Pošarac-Marković, Milica B.
AU  - Janaćković, Đorđe T.
AU  - Matović, Branko
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6089
AB  - Amorphous powders of iron doped 3:2 mullite (3Al(2)O(3)center dot 2SiO(2)) were prepared by sol-gel combustion process using ethanol-water solutions of Al(III) nitrate, Fe(III) nitrate, TEOS and urea. Compositions up to 15 wt% of Fe2O3 were investigated. After combustion and heat treatment at 800 degrees C for 4 h, XRD analysis confirmed that the powders were amorphous. This is in agreement with the thermodynamic predictions that direct formation of mullite has not occurred during the aluminum nitrate - urea combustion reaction. XRD patterns of uniaxially pressed and sintered pellets at 1550 degrees C for 4 h revealed the crystal structure of orthorhombic mullite. The lattice parameters and unit cell volume increases as the mullite solid solutions were enriched by iron. The TGA/DSC analysis showed the reducing of crystallization temperature of iron doped mullites with increasing of iron content in reaction mixtures. The mullitization reaction is two-step process including formation of transient spinel phase below 1000 degrees C and mullite crystallization at temperatures about 1200 degrees C. The SEM micrographs of the sintered samples reveal elongated mullite grains with grain length up to 40 mu m. Increasing of the iron content in the reaction mixture enhances the grain size and the grains become elongated and better packed increasing the density of sintered samples. (C) 2014 Elsevier B.V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Sol-gel synthesis and characterization of iron doped mullite
VL  - 612
SP  - 259
EP  - 264
DO  - 10.1016/j.jallcom.2014.05.204
ER  - 

@article{
author = "Ilić, Svetlana M. and Zec, Slavica and Miljkovic, M. and Poleti, Dejan and Pošarac-Marković, Milica B. and Janaćković, Đorđe T. and Matović, Branko",
year = "2014",
abstract = "Amorphous powders of iron doped 3:2 mullite (3Al(2)O(3)center dot 2SiO(2)) were prepared by sol-gel combustion process using ethanol-water solutions of Al(III) nitrate, Fe(III) nitrate, TEOS and urea. Compositions up to 15 wt% of Fe2O3 were investigated. After combustion and heat treatment at 800 degrees C for 4 h, XRD analysis confirmed that the powders were amorphous. This is in agreement with the thermodynamic predictions that direct formation of mullite has not occurred during the aluminum nitrate - urea combustion reaction. XRD patterns of uniaxially pressed and sintered pellets at 1550 degrees C for 4 h revealed the crystal structure of orthorhombic mullite. The lattice parameters and unit cell volume increases as the mullite solid solutions were enriched by iron. The TGA/DSC analysis showed the reducing of crystallization temperature of iron doped mullites with increasing of iron content in reaction mixtures. The mullitization reaction is two-step process including formation of transient spinel phase below 1000 degrees C and mullite crystallization at temperatures about 1200 degrees C. The SEM micrographs of the sintered samples reveal elongated mullite grains with grain length up to 40 mu m. Increasing of the iron content in the reaction mixture enhances the grain size and the grains become elongated and better packed increasing the density of sintered samples. (C) 2014 Elsevier B.V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Sol-gel synthesis and characterization of iron doped mullite",
volume = "612",
pages = "259-264",
doi = "10.1016/j.jallcom.2014.05.204"
}

Ilić, S. M., Zec, S., Miljkovic, M., Poleti, D., Pošarac-Marković, M. B., Janaćković, Đ. T.,& Matović, B.. (2014). Sol-gel synthesis and characterization of iron doped mullite. in Journal of Alloys and Compounds, 612, 259-264.
https://doi.org/10.1016/j.jallcom.2014.05.204

Ilić SM, Zec S, Miljkovic M, Poleti D, Pošarac-Marković MB, Janaćković ĐT, Matović B. Sol-gel synthesis and characterization of iron doped mullite. in Journal of Alloys and Compounds. 2014;612:259-264.
doi:10.1016/j.jallcom.2014.05.204 .

Ilić, Svetlana M., Zec, Slavica, Miljkovic, M., Poleti, Dejan, Pošarac-Marković, Milica B., Janaćković, Đorđe T., Matović, Branko, "Sol-gel synthesis and characterization of iron doped mullite" in Journal of Alloys and Compounds, 612 (2014):259-264,
https://doi.org/10.1016/j.jallcom.2014.05.204 . .

TY  - JOUR
AU  - Jovalekić, Čedomir
AU  - Zdujić, Miodrag
AU  - Poleti, Dejan
AU  - Karanović, Ljiljana
AU  - Mitrić, Miodrag
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3465
AB  - Powder mixtures of alpha-Bi2O3 (bismite) and monoclinic m-ZrO2 (baddeleyite) in the molar ratio 2:3 were mechanochemically and thermally treated with the goal to examine the phases, which may appear during such procedures. The prepared samples were characterized by X-ray powder diffraction, differential scanning calorimetry (DSC), electrical measurements, as well as scanning electron microscopy (SEM) and transmission election microscopy (TEM). The mechanochemical reaction leads to the gradual formation of a nanocrystalline phase, which resembles delta-Bi2O3, a high-temperature Bi2O3 polymorph. Isothermal sintering in air at a temperature of 820 degrees C for 24 h followed by quenching to room temperature yielded a mixture of ZrO2-stabilized beta-Bi2O3 and m-ZrO2 phases, whereas in slowly cooled products, the complete separation of the initial alpha-Bi2O3 and m-ZrO2 constituents was observed. The dielectric permittivity of the sintered samples significantly depended on the temperature. The sintered and quenched samples exhibited a hysteresis dependence of the dielectric shift, showing that the ZrO2-doped beta-Bi2O3 phase possess ferroelectric properties, which were detected for the first time. This fact, together with Rietveld refinement of the beta-Bi2O3/m-ZrO2 mixture based on neutron powder diffraction data showed that ZrO2-doped beta-Bi2O3 has a non-centrosymmetric structure with P $(4) over bar $2(1)c as the true space group. The ZrO2 content in the doped beta-Bi2O3 and the crystal chemical reasons for the stabilization of the beta-Bi2O3 phase by the addition Of m-ZrO2 are discussed. (c) 2008 Elsevier Inc. All rights reserved.
T2  - Journal of Solid State Chemistry
T1  - Structural and electrical properties of the 2Bi(2)O(3) center dot 3ZrO(2) system
VL  - 181
IS  - 6
SP  - 1321
EP  - 1329
DO  - 10.1016/j.jssc.2008.02.038
ER  - 

@article{
author = "Jovalekić, Čedomir and Zdujić, Miodrag and Poleti, Dejan and Karanović, Ljiljana and Mitrić, Miodrag",
year = "2008",
abstract = "Powder mixtures of alpha-Bi2O3 (bismite) and monoclinic m-ZrO2 (baddeleyite) in the molar ratio 2:3 were mechanochemically and thermally treated with the goal to examine the phases, which may appear during such procedures. The prepared samples were characterized by X-ray powder diffraction, differential scanning calorimetry (DSC), electrical measurements, as well as scanning electron microscopy (SEM) and transmission election microscopy (TEM). The mechanochemical reaction leads to the gradual formation of a nanocrystalline phase, which resembles delta-Bi2O3, a high-temperature Bi2O3 polymorph. Isothermal sintering in air at a temperature of 820 degrees C for 24 h followed by quenching to room temperature yielded a mixture of ZrO2-stabilized beta-Bi2O3 and m-ZrO2 phases, whereas in slowly cooled products, the complete separation of the initial alpha-Bi2O3 and m-ZrO2 constituents was observed. The dielectric permittivity of the sintered samples significantly depended on the temperature. The sintered and quenched samples exhibited a hysteresis dependence of the dielectric shift, showing that the ZrO2-doped beta-Bi2O3 phase possess ferroelectric properties, which were detected for the first time. This fact, together with Rietveld refinement of the beta-Bi2O3/m-ZrO2 mixture based on neutron powder diffraction data showed that ZrO2-doped beta-Bi2O3 has a non-centrosymmetric structure with P $(4) over bar $2(1)c as the true space group. The ZrO2 content in the doped beta-Bi2O3 and the crystal chemical reasons for the stabilization of the beta-Bi2O3 phase by the addition Of m-ZrO2 are discussed. (c) 2008 Elsevier Inc. All rights reserved.",
journal = "Journal of Solid State Chemistry",
title = "Structural and electrical properties of the 2Bi(2)O(3) center dot 3ZrO(2) system",
volume = "181",
number = "6",
pages = "1321-1329",
doi = "10.1016/j.jssc.2008.02.038"
}

Jovalekić, Č., Zdujić, M., Poleti, D., Karanović, L.,& Mitrić, M.. (2008). Structural and electrical properties of the 2Bi(2)O(3) center dot 3ZrO(2) system. in Journal of Solid State Chemistry, 181(6), 1321-1329.
https://doi.org/10.1016/j.jssc.2008.02.038

Jovalekić Č, Zdujić M, Poleti D, Karanović L, Mitrić M. Structural and electrical properties of the 2Bi(2)O(3) center dot 3ZrO(2) system. in Journal of Solid State Chemistry. 2008;181(6):1321-1329.
doi:10.1016/j.jssc.2008.02.038 .

Jovalekić, Čedomir, Zdujić, Miodrag, Poleti, Dejan, Karanović, Ljiljana, Mitrić, Miodrag, "Structural and electrical properties of the 2Bi(2)O(3) center dot 3ZrO(2) system" in Journal of Solid State Chemistry, 181, no. 6 (2008):1321-1329,
https://doi.org/10.1016/j.jssc.2008.02.038 . .

TY  - CONF
AU  - Djuris, K.
AU  - Branković, Goran O.
AU  - Brankovic, Z.
AU  - Bernik, S.
AU  - Pocuca, M.
AU  - Poleti, Dejan
AU  - Antić, Bratislav
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6687
AB  - In this work pure and doped LMO were prepared using modified Pechini method from lanthanum and manganese citrates. Lanthanum citrate was prepared starting from La2O3, while manganese citrate was prepared from Mn(NO3)(2). Valence state of the manganese was controlled by adjusting pH value of the solution and confirmed by EPR and UV/VIS analysis. Thermal treatment conditions for preparation of LMO powders were determined from TG/DTA of dried precursors. XRD results confirmed that pure perovskite phase was successfully prepared in single LMO and Ca-doped LMO. SEM and measurements of specific surface area of the powders showed the existence of large agglomerates consisting of submicronic primary particles.
C3  - Materials Science Forum
T1  - Synthesis of pure and doped LaMnO3 powders from citrate precursors
VL  - 555
SP  - 237
EP  - +
DO  - 10.4028/www.scientific.net/MSF.555.237
ER  - 

@conference{
author = "Djuris, K. and Branković, Goran O. and Brankovic, Z. and Bernik, S. and Pocuca, M. and Poleti, Dejan and Antić, Bratislav",
year = "2007",
abstract = "In this work pure and doped LMO were prepared using modified Pechini method from lanthanum and manganese citrates. Lanthanum citrate was prepared starting from La2O3, while manganese citrate was prepared from Mn(NO3)(2). Valence state of the manganese was controlled by adjusting pH value of the solution and confirmed by EPR and UV/VIS analysis. Thermal treatment conditions for preparation of LMO powders were determined from TG/DTA of dried precursors. XRD results confirmed that pure perovskite phase was successfully prepared in single LMO and Ca-doped LMO. SEM and measurements of specific surface area of the powders showed the existence of large agglomerates consisting of submicronic primary particles.",
journal = "Materials Science Forum",
title = "Synthesis of pure and doped LaMnO3 powders from citrate precursors",
volume = "555",
pages = "237-+",
doi = "10.4028/www.scientific.net/MSF.555.237"
}

Djuris, K., Branković, G. O., Brankovic, Z., Bernik, S., Pocuca, M., Poleti, D.,& Antić, B.. (2007). Synthesis of pure and doped LaMnO3 powders from citrate precursors. in Materials Science Forum, 555, 237-+.
https://doi.org/10.4028/www.scientific.net/MSF.555.237

Djuris K, Branković GO, Brankovic Z, Bernik S, Pocuca M, Poleti D, Antić B. Synthesis of pure and doped LaMnO3 powders from citrate precursors. in Materials Science Forum. 2007;555:237-+.
doi:10.4028/www.scientific.net/MSF.555.237 .

Djuris, K., Branković, Goran O., Brankovic, Z., Bernik, S., Pocuca, M., Poleti, Dejan, Antić, Bratislav, "Synthesis of pure and doped LaMnO3 powders from citrate precursors" in Materials Science Forum, 555 (2007):237-+,
https://doi.org/10.4028/www.scientific.net/MSF.555.237 . .

TY  - JOUR
AU  - Drašković, Bojana M.
AU  - Bogdanović, Goran A.
AU  - Leovac, Vukadin M.
AU  - Brceski, Ilija D.
AU  - Poleti, Dejan
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3037
AB  - The title compound, [Ni(C28H30N3O2PS)], crystallizes with two independent molecules in the asymmetric unit. The Ni-II atoms are in significantly deformed square-planar environments formed by an ONNP donor set from a thiosemicarbazide-based tetradentate ligand. The Ni-II atom and the ONN donor atoms are nearly coplanar, while the P atom deviates from their mean planes by 0.278 (4) and 0.202 (4) angstrom for the two independent molecules. The P-containing chelate rings are remarkably non-planar, adopting a boat conformation, which is unusual for chelate rings in transition metal complexes with thiosemicarbazide-based tetradentate ligands. The orientation of the ethoxy group bonded to this chelate ring is caused by an intramolecular C-H center dot center dot center dot pi interaction with the opposing phenyl ring. There are no hydrogen bonds; instead, numerous intermolecular C-H center dot center dot center dot pi interactions dominate in the crystal packing.
T2  - Acta Crystallographica. Section C: Crystal Structure Communications
T1  - Transition metal complexes with thiosemicarbazide-based ligands. LIII. [4-(2-diphenylphosphino-alpha-ethoxybenzyl-kappa P)-S-methyl-1-(4-oxidopent-3-en-4-ylidene-kappa O)-thiosemicarbazido-kappa(2) N-1, N-4]nickel (II)
VL  - 62
SP  - M319
EP  - M322
DO  - 10.1107/S0108271016018932
ER  - 

@article{
author = "Drašković, Bojana M. and Bogdanović, Goran A. and Leovac, Vukadin M. and Brceski, Ilija D. and Poleti, Dejan",
year = "2006",
abstract = "The title compound, [Ni(C28H30N3O2PS)], crystallizes with two independent molecules in the asymmetric unit. The Ni-II atoms are in significantly deformed square-planar environments formed by an ONNP donor set from a thiosemicarbazide-based tetradentate ligand. The Ni-II atom and the ONN donor atoms are nearly coplanar, while the P atom deviates from their mean planes by 0.278 (4) and 0.202 (4) angstrom for the two independent molecules. The P-containing chelate rings are remarkably non-planar, adopting a boat conformation, which is unusual for chelate rings in transition metal complexes with thiosemicarbazide-based tetradentate ligands. The orientation of the ethoxy group bonded to this chelate ring is caused by an intramolecular C-H center dot center dot center dot pi interaction with the opposing phenyl ring. There are no hydrogen bonds; instead, numerous intermolecular C-H center dot center dot center dot pi interactions dominate in the crystal packing.",
journal = "Acta Crystallographica. Section C: Crystal Structure Communications",
title = "Transition metal complexes with thiosemicarbazide-based ligands. LIII. [4-(2-diphenylphosphino-alpha-ethoxybenzyl-kappa P)-S-methyl-1-(4-oxidopent-3-en-4-ylidene-kappa O)-thiosemicarbazido-kappa(2) N-1, N-4]nickel (II)",
volume = "62",
pages = "M319-M322",
doi = "10.1107/S0108271016018932"
}

Drašković, B. M., Bogdanović, G. A., Leovac, V. M., Brceski, I. D.,& Poleti, D.. (2006). Transition metal complexes with thiosemicarbazide-based ligands. LIII. [4-(2-diphenylphosphino-alpha-ethoxybenzyl-kappa P)-S-methyl-1-(4-oxidopent-3-en-4-ylidene-kappa O)-thiosemicarbazido-kappa(2) N-1, N-4]nickel (II). in Acta Crystallographica. Section C: Crystal Structure Communications, 62, M319-M322.
https://doi.org/10.1107/S0108271016018932

Drašković BM, Bogdanović GA, Leovac VM, Brceski ID, Poleti D. Transition metal complexes with thiosemicarbazide-based ligands. LIII. [4-(2-diphenylphosphino-alpha-ethoxybenzyl-kappa P)-S-methyl-1-(4-oxidopent-3-en-4-ylidene-kappa O)-thiosemicarbazido-kappa(2) N-1, N-4]nickel (II). in Acta Crystallographica. Section C: Crystal Structure Communications. 2006;62:M319-M322.
doi:10.1107/S0108271016018932 .

Drašković, Bojana M., Bogdanović, Goran A., Leovac, Vukadin M., Brceski, Ilija D., Poleti, Dejan, "Transition metal complexes with thiosemicarbazide-based ligands. LIII. [4-(2-diphenylphosphino-alpha-ethoxybenzyl-kappa P)-S-methyl-1-(4-oxidopent-3-en-4-ylidene-kappa O)-thiosemicarbazido-kappa(2) N-1, N-4]nickel (II)" in Acta Crystallographica. Section C: Crystal Structure Communications, 62 (2006):M319-M322,
https://doi.org/10.1107/S0108271016018932 . .

TY  - JOUR
AU  - Rogan, Jelena R.
AU  - Poleti, Dejan
AU  - Karanović, Ljiljana
AU  - Bogdanović, Goran A.
AU  - Spasojević-de Bire, Anne
AU  - Petrović, Dragoslav M.
PY  - 2000
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2368
AB  - A series of nine ternary Co(II), Ni(II) and Cu(II) complexes with some aromatic diamines and dianion of terephthalic acid (tpht) have been synthesized and characterized by elemental analysis, magnetic susceptibility measurements, IR and diffuse-reflectance spectroscopy. All compounds were obtained as microcrystalline solids, stable in air and insoluble in common solvents. Two of them, [M(tpht)(dipya)(H2O)(2)]. 3H(2)O [M = Co(II), Ni(II); dipya = 2,2-dipyridylamine], were obtained as single crystals and their crystal structures have been determined by X-ray structure analysis. Both structures consist of discrete [M(tpht)(dipya)(H2O)(2)](2+) complex units with two H2O molecules in the trans position. Three additional H2O molecules together with coordinated H2O and O atoms from COO groups make a three-dimensional network of hydrogen bonds. Terephthalato ligands are coordinated by only one COO group, which acts as a chelating ligand. Central metal ions are in a distorted octahedral environment. Based on the above-mentioned analysis and known crystal structures, the possible structures and geometry of the complexes are discussed. All Co(II) and Ni(II) complexes are pseudooctahedral and mononuclear, with only one of the tpht COO groups coordinated in a chelate mode. Cu(II) complexes have probably distorted octahedral geometry with bridging role of tpht ions and monodentate or strongly asymmetric coordination of COO groups. (C) 2000 Elsevier Science Ltd. All rights reserved.
T2  - Polyhedron
T1  - Mixed ligand Co(II), Ni(II) and Cu(II) complexes containing terephthalato ligands. Crystal structures of diaqua(2,2 -dipyridylamine)(terephthalato)metal(II) trihydrates (metal = cobalt or nickel)
VL  - 19
IS  - 11
SP  - 1415
EP  - 1421
DO  - 10.1016/S0277-5387(00)00435-6
ER  - 

@article{
author = "Rogan, Jelena R. and Poleti, Dejan and Karanović, Ljiljana and Bogdanović, Goran A. and Spasojević-de Bire, Anne and Petrović, Dragoslav M.",
year = "2000",
abstract = "A series of nine ternary Co(II), Ni(II) and Cu(II) complexes with some aromatic diamines and dianion of terephthalic acid (tpht) have been synthesized and characterized by elemental analysis, magnetic susceptibility measurements, IR and diffuse-reflectance spectroscopy. All compounds were obtained as microcrystalline solids, stable in air and insoluble in common solvents. Two of them, [M(tpht)(dipya)(H2O)(2)]. 3H(2)O [M = Co(II), Ni(II); dipya = 2,2-dipyridylamine], were obtained as single crystals and their crystal structures have been determined by X-ray structure analysis. Both structures consist of discrete [M(tpht)(dipya)(H2O)(2)](2+) complex units with two H2O molecules in the trans position. Three additional H2O molecules together with coordinated H2O and O atoms from COO groups make a three-dimensional network of hydrogen bonds. Terephthalato ligands are coordinated by only one COO group, which acts as a chelating ligand. Central metal ions are in a distorted octahedral environment. Based on the above-mentioned analysis and known crystal structures, the possible structures and geometry of the complexes are discussed. All Co(II) and Ni(II) complexes are pseudooctahedral and mononuclear, with only one of the tpht COO groups coordinated in a chelate mode. Cu(II) complexes have probably distorted octahedral geometry with bridging role of tpht ions and monodentate or strongly asymmetric coordination of COO groups. (C) 2000 Elsevier Science Ltd. All rights reserved.",
journal = "Polyhedron",
title = "Mixed ligand Co(II), Ni(II) and Cu(II) complexes containing terephthalato ligands. Crystal structures of diaqua(2,2 -dipyridylamine)(terephthalato)metal(II) trihydrates (metal = cobalt or nickel)",
volume = "19",
number = "11",
pages = "1415-1421",
doi = "10.1016/S0277-5387(00)00435-6"
}

Rogan, J. R., Poleti, D., Karanović, L., Bogdanović, G. A., Spasojević-de Bire, A.,& Petrović, D. M.. (2000). Mixed ligand Co(II), Ni(II) and Cu(II) complexes containing terephthalato ligands. Crystal structures of diaqua(2,2 -dipyridylamine)(terephthalato)metal(II) trihydrates (metal = cobalt or nickel). in Polyhedron, 19(11), 1415-1421.
https://doi.org/10.1016/S0277-5387(00)00435-6

Rogan JR, Poleti D, Karanović L, Bogdanović GA, Spasojević-de Bire A, Petrović DM. Mixed ligand Co(II), Ni(II) and Cu(II) complexes containing terephthalato ligands. Crystal structures of diaqua(2,2 -dipyridylamine)(terephthalato)metal(II) trihydrates (metal = cobalt or nickel). in Polyhedron. 2000;19(11):1415-1421.
doi:10.1016/S0277-5387(00)00435-6 .

Rogan, Jelena R., Poleti, Dejan, Karanović, Ljiljana, Bogdanović, Goran A., Spasojević-de Bire, Anne, Petrović, Dragoslav M., "Mixed ligand Co(II), Ni(II) and Cu(II) complexes containing terephthalato ligands. Crystal structures of diaqua(2,2 -dipyridylamine)(terephthalato)metal(II) trihydrates (metal = cobalt or nickel)" in Polyhedron, 19, no. 11 (2000):1415-1421,
https://doi.org/10.1016/S0277-5387(00)00435-6 . .

TY  - JOUR
AU  - Zdujić, Miodrag
AU  - Jovalekić, Čedomir
AU  - Karanović, Ljiljana
AU  - Mitrić, Miodrag
AU  - Poleti, Dejan
AU  - Skala, Dejan
PY  - 1998
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2143
AB  - Powder of alpha-Fe2O3 was mechanochemically treated in a planetary ball mill in an air atmosphere. Structural changes were followed by X-ray diffraction analysis, magnetization measurements and differential scanning calorimetry after various milling times. It was found that complete transformation of alpha-Fe2O3 to Fe3O4 is possible during milling in an air atmosphere under appropriate milling conditions. Presumably, the decrease in the oxygen partial pressure during milling has a critical influence on promoting the dissociation of alpha-Fe2O3. Before nucleation of the Fe3O4 phase, the crystallites of the alpha-Fe2O3 phase are reduced to a minimal size accompanied by the introduction of atomic-level strain. Local modeling of a collision event, coupled with a classical thermodynamic assessment of the Fe2O3-Fe3O4 system, were used to rationalize the experimental results. It is proposed that the mechanochemical reactions proceed at the moment of impact by a process of energization and freezing of highly localized sites of a short lifetime. Excitation on a time scale of similar to 10(-5) s corresponds to a temperature rise of the order of (1-2) x 10(3) K. Decay of the excited state occurs rapidly at a mean cooling rate higher than 10(6) K s(-1). (C) 1998 Elsevier Science S.A. All rights reserved.
T2  - Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing
T1  - Mechanochemical treatment of alpha-Fe2O3 powder in air atmosphere
VL  - 245
IS  - 1
SP  - 109
EP  - 117
DO  - 10.1016/S0921-5093(97)00715-6
ER  - 

@article{
author = "Zdujić, Miodrag and Jovalekić, Čedomir and Karanović, Ljiljana and Mitrić, Miodrag and Poleti, Dejan and Skala, Dejan",
year = "1998",
abstract = "Powder of alpha-Fe2O3 was mechanochemically treated in a planetary ball mill in an air atmosphere. Structural changes were followed by X-ray diffraction analysis, magnetization measurements and differential scanning calorimetry after various milling times. It was found that complete transformation of alpha-Fe2O3 to Fe3O4 is possible during milling in an air atmosphere under appropriate milling conditions. Presumably, the decrease in the oxygen partial pressure during milling has a critical influence on promoting the dissociation of alpha-Fe2O3. Before nucleation of the Fe3O4 phase, the crystallites of the alpha-Fe2O3 phase are reduced to a minimal size accompanied by the introduction of atomic-level strain. Local modeling of a collision event, coupled with a classical thermodynamic assessment of the Fe2O3-Fe3O4 system, were used to rationalize the experimental results. It is proposed that the mechanochemical reactions proceed at the moment of impact by a process of energization and freezing of highly localized sites of a short lifetime. Excitation on a time scale of similar to 10(-5) s corresponds to a temperature rise of the order of (1-2) x 10(3) K. Decay of the excited state occurs rapidly at a mean cooling rate higher than 10(6) K s(-1). (C) 1998 Elsevier Science S.A. All rights reserved.",
journal = "Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing",
title = "Mechanochemical treatment of alpha-Fe2O3 powder in air atmosphere",
volume = "245",
number = "1",
pages = "109-117",
doi = "10.1016/S0921-5093(97)00715-6"
}

Zdujić, M., Jovalekić, Č., Karanović, L., Mitrić, M., Poleti, D.,& Skala, D.. (1998). Mechanochemical treatment of alpha-Fe2O3 powder in air atmosphere. in Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing, 245(1), 109-117.
https://doi.org/10.1016/S0921-5093(97)00715-6

Zdujić M, Jovalekić Č, Karanović L, Mitrić M, Poleti D, Skala D. Mechanochemical treatment of alpha-Fe2O3 powder in air atmosphere. in Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing. 1998;245(1):109-117.
doi:10.1016/S0921-5093(97)00715-6 .

Zdujić, Miodrag, Jovalekić, Čedomir, Karanović, Ljiljana, Mitrić, Miodrag, Poleti, Dejan, Skala, Dejan, "Mechanochemical treatment of alpha-Fe2O3 powder in air atmosphere" in Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing, 245, no. 1 (1998):109-117,
https://doi.org/10.1016/S0921-5093(97)00715-6 . .

TY  - JOUR
AU  - Anđelković, Katarina
AU  - Ivanović, Ivana
AU  - Prelesnik, Bogdan V.
AU  - Leovac, Vukadin M.
AU  - Poleti, Dejan
PY  - 1996
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2015
AB  - The complex [Co(H(2)L)(H2O) (MeOH)](ClO4)(2)[H(2)L] = 2,2triple prime-(2,6-pyridindiyl-diethylidene) -dioxamohydrazide] has been prepared by direct and template syntheses and characterized by elemental analysis, IR spectroscopy, and magnetic susceptibility measurements. The crystal structure of the complex has also been determined. The cobalt atom is seven coordinated with approximately pentagonal-bipyramidal geometry. The H2O and methanol are axial with the planar pentadentate H(2)L ligand forming the equatorial plane. The possible reaction mechanism has been proposed.
T2  - Polyhedron
T1  - Synthesis and structure of aquamethanol-2,2-(2,6-pyridin-diyldiethylidene)-dioxamohydrazidocobalt(II) perchlorate
VL  - 15
IS  - 24
SP  - 4361
EP  - 4366
DO  - 10.1016/0277-5387(96)00234-3
ER  - 

@article{
author = "Anđelković, Katarina and Ivanović, Ivana and Prelesnik, Bogdan V. and Leovac, Vukadin M. and Poleti, Dejan",
year = "1996",
abstract = "The complex [Co(H(2)L)(H2O) (MeOH)](ClO4)(2)[H(2)L] = 2,2triple prime-(2,6-pyridindiyl-diethylidene) -dioxamohydrazide] has been prepared by direct and template syntheses and characterized by elemental analysis, IR spectroscopy, and magnetic susceptibility measurements. The crystal structure of the complex has also been determined. The cobalt atom is seven coordinated with approximately pentagonal-bipyramidal geometry. The H2O and methanol are axial with the planar pentadentate H(2)L ligand forming the equatorial plane. The possible reaction mechanism has been proposed.",
journal = "Polyhedron",
title = "Synthesis and structure of aquamethanol-2,2-(2,6-pyridin-diyldiethylidene)-dioxamohydrazidocobalt(II) perchlorate",
volume = "15",
number = "24",
pages = "4361-4366",
doi = "10.1016/0277-5387(96)00234-3"
}

Anđelković, K., Ivanović, I., Prelesnik, B. V., Leovac, V. M.,& Poleti, D.. (1996). Synthesis and structure of aquamethanol-2,2-(2,6-pyridin-diyldiethylidene)-dioxamohydrazidocobalt(II) perchlorate. in Polyhedron, 15(24), 4361-4366.
https://doi.org/10.1016/0277-5387(96)00234-3

Anđelković K, Ivanović I, Prelesnik BV, Leovac VM, Poleti D. Synthesis and structure of aquamethanol-2,2-(2,6-pyridin-diyldiethylidene)-dioxamohydrazidocobalt(II) perchlorate. in Polyhedron. 1996;15(24):4361-4366.
doi:10.1016/0277-5387(96)00234-3 .

Anđelković, Katarina, Ivanović, Ivana, Prelesnik, Bogdan V., Leovac, Vukadin M., Poleti, Dejan, "Synthesis and structure of aquamethanol-2,2-(2,6-pyridin-diyldiethylidene)-dioxamohydrazidocobalt(II) perchlorate" in Polyhedron, 15, no. 24 (1996):4361-4366,
https://doi.org/10.1016/0277-5387(96)00234-3 . .

TY  - JOUR
AU  - Ilić, A.
AU  - Antić, Bratislav
AU  - Poleti, Dejan
AU  - Rodić, Dubravko
AU  - Petrović-Prelević, Irena
AU  - Karanović, Ljiljana
PY  - 1996
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1973
AB  - The series of spinels Zn2.33-xCoxSb0.67O4 (0.23 less than or equal to x less than or equal to 2.33) was prepared by ceramic technology. The crystal structures were refined from the x-ray diffraction data using the Rietveld profile method. The high-temperature magnetic susceptibility was measured by the Faraday method in the temperature range 290-600 K and the data were fitted to the Curie-Weiss law. The cation distribution in these diluted magnetics is obtained from x-ray diffraction and high-temperature magnetic susceptibility measurements. It was found that, for x less than or equal to 0.93 Co2+, ions occupy exclusively the octahedral position in the spinel type of structure. In the low-concentration region a strong clustering of magnetic ions is observed. In the range 1.33 less than or equal to x less than or equal to 2.33, Co2+ ions are distributed in both tetrahedral and octahedral cationic sites. The Curie-Weiss paramagnetic temperature Theta is negative in the whole range of concentrations, as the consequence of a predominant antiferromagnetic interaction. The appearance of the Co2+ ions in tetrahedral sites (around x = 1.33) leads to a drop in the absolute Theta-value. The effective magnetic moments of Co2+ ions are about 4.60(mu B) for x less than or equal to 1.33 and depend on the Co2+ concentration for x GT 1.33.
T2  - Journal of Physics: Condensed Matter
T1  - Cation distribution and magnetic properties of ternary Zn2.33-xCO2Sb0.67O4 spinels
VL  - 8
IS  - 14
SP  - 2317
EP  - 2325
DO  - 10.1088/0953-8984/8/14/008
ER  - 

@article{
author = "Ilić, A. and Antić, Bratislav and Poleti, Dejan and Rodić, Dubravko and Petrović-Prelević, Irena and Karanović, Ljiljana",
year = "1996",
abstract = "The series of spinels Zn2.33-xCoxSb0.67O4 (0.23 less than or equal to x less than or equal to 2.33) was prepared by ceramic technology. The crystal structures were refined from the x-ray diffraction data using the Rietveld profile method. The high-temperature magnetic susceptibility was measured by the Faraday method in the temperature range 290-600 K and the data were fitted to the Curie-Weiss law. The cation distribution in these diluted magnetics is obtained from x-ray diffraction and high-temperature magnetic susceptibility measurements. It was found that, for x less than or equal to 0.93 Co2+, ions occupy exclusively the octahedral position in the spinel type of structure. In the low-concentration region a strong clustering of magnetic ions is observed. In the range 1.33 less than or equal to x less than or equal to 2.33, Co2+ ions are distributed in both tetrahedral and octahedral cationic sites. The Curie-Weiss paramagnetic temperature Theta is negative in the whole range of concentrations, as the consequence of a predominant antiferromagnetic interaction. The appearance of the Co2+ ions in tetrahedral sites (around x = 1.33) leads to a drop in the absolute Theta-value. The effective magnetic moments of Co2+ ions are about 4.60(mu B) for x less than or equal to 1.33 and depend on the Co2+ concentration for x GT 1.33.",
journal = "Journal of Physics: Condensed Matter",
title = "Cation distribution and magnetic properties of ternary Zn2.33-xCO2Sb0.67O4 spinels",
volume = "8",
number = "14",
pages = "2317-2325",
doi = "10.1088/0953-8984/8/14/008"
}

Ilić, A., Antić, B., Poleti, D., Rodić, D., Petrović-Prelević, I.,& Karanović, L.. (1996). Cation distribution and magnetic properties of ternary Zn2.33-xCO2Sb0.67O4 spinels. in Journal of Physics: Condensed Matter, 8(14), 2317-2325.
https://doi.org/10.1088/0953-8984/8/14/008

Ilić A, Antić B, Poleti D, Rodić D, Petrović-Prelević I, Karanović L. Cation distribution and magnetic properties of ternary Zn2.33-xCO2Sb0.67O4 spinels. in Journal of Physics: Condensed Matter. 1996;8(14):2317-2325.
doi:10.1088/0953-8984/8/14/008 .

Ilić, A., Antić, Bratislav, Poleti, Dejan, Rodić, Dubravko, Petrović-Prelević, Irena, Karanović, Ljiljana, "Cation distribution and magnetic properties of ternary Zn2.33-xCO2Sb0.67O4 spinels" in Journal of Physics: Condensed Matter, 8, no. 14 (1996):2317-2325,
https://doi.org/10.1088/0953-8984/8/14/008 . .