TY  - JOUR
AU  - Begović, Nebojša
AU  - Vasić, Milica M.
AU  - Blagojević, Vladimir A.
AU  - Filipović, Nenad
AU  - Marinković, Aleksandar D.
AU  - Malesević, Aleksandar
AU  - Minić, Dragica M.
PY  - 2017
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4483
AB  - The structure of new cis-dichloro[(E)-ethyl-2-(2-((8-hydroxyquinolin-2-il)methylene)hidrazinyl)acetate-kappa(2) N]-palladium(II) complex was determined using a combination of XRD and IR measurements and DFT calculations. Inherent flexibility of its structure is evident from the complexity of its IR spectrum, which could only be theoretically reproduced as a combination of several closely related structures, involving rotation around C-O bond and changes in hydrogen interactions of its -OH group. Its thermal stability and decomposition were studied non-isothermally, and the thermal decomposition mechanism was proposed using correlation with DFT calculations at the molecular level. It was determined that the initial degradation step consists of the release of Cl free radical, which then reacts with both the initial compound and the degradation products. Besides the endothermic steps, there are exothermic ones, contributing to the complex shape of the DSC curve, consisted of overlapping endothermic and exothermic peaks. Deconvolution of DTG curve allowed identification of primary fragments of the initial degradation process and, in conjunction with DFT calculations, construction of the most likely reaction mechanism.
PB  - Springer, Dordrecht
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Synthesis and thermal stability of cis-dichloro[(E)-ethyl-2-(2-((8-hydroxyquinolin-2-il)methylene)hidrazinyl)acetate-kappa(2) N]-palladium(II) complex
EP  - 711
IS  - 2
SP  - 701
VL  - 130
DO  - 10.1007/s10973-017-6458-2
ER  - 

@article{
author = "Begović, Nebojša and Vasić, Milica M. and Blagojević, Vladimir A. and Filipović, Nenad and Marinković, Aleksandar D. and Malesević, Aleksandar and Minić, Dragica M.",
year = "2017",
abstract = "The structure of new cis-dichloro[(E)-ethyl-2-(2-((8-hydroxyquinolin-2-il)methylene)hidrazinyl)acetate-kappa(2) N]-palladium(II) complex was determined using a combination of XRD and IR measurements and DFT calculations. Inherent flexibility of its structure is evident from the complexity of its IR spectrum, which could only be theoretically reproduced as a combination of several closely related structures, involving rotation around C-O bond and changes in hydrogen interactions of its -OH group. Its thermal stability and decomposition were studied non-isothermally, and the thermal decomposition mechanism was proposed using correlation with DFT calculations at the molecular level. It was determined that the initial degradation step consists of the release of Cl free radical, which then reacts with both the initial compound and the degradation products. Besides the endothermic steps, there are exothermic ones, contributing to the complex shape of the DSC curve, consisted of overlapping endothermic and exothermic peaks. Deconvolution of DTG curve allowed identification of primary fragments of the initial degradation process and, in conjunction with DFT calculations, construction of the most likely reaction mechanism.",
publisher = "Springer, Dordrecht",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Synthesis and thermal stability of cis-dichloro[(E)-ethyl-2-(2-((8-hydroxyquinolin-2-il)methylene)hidrazinyl)acetate-kappa(2) N]-palladium(II) complex",
pages = "711-701",
number = "2",
volume = "130",
doi = "10.1007/s10973-017-6458-2"
}

Begović, N., Vasić, M. M., Blagojević, V. A., Filipović, N., Marinković, A. D., Malesević, A.,& Minić, D. M.. (2017). Synthesis and thermal stability of cis-dichloro[(E)-ethyl-2-(2-((8-hydroxyquinolin-2-il)methylene)hidrazinyl)acetate-kappa(2) N]-palladium(II) complex. in Journal of Thermal Analysis and Calorimetry
Springer, Dordrecht., 130(2), 701-711.
https://doi.org/10.1007/s10973-017-6458-2

Begović N, Vasić MM, Blagojević VA, Filipović N, Marinković AD, Malesević A, Minić DM. Synthesis and thermal stability of cis-dichloro[(E)-ethyl-2-(2-((8-hydroxyquinolin-2-il)methylene)hidrazinyl)acetate-kappa(2) N]-palladium(II) complex. in Journal of Thermal Analysis and Calorimetry. 2017;130(2):701-711.
doi:10.1007/s10973-017-6458-2 .

Begović, Nebojša, Vasić, Milica M., Blagojević, Vladimir A., Filipović, Nenad, Marinković, Aleksandar D., Malesević, Aleksandar, Minić, Dragica M., "Synthesis and thermal stability of cis-dichloro[(E)-ethyl-2-(2-((8-hydroxyquinolin-2-il)methylene)hidrazinyl)acetate-kappa(2) N]-palladium(II) complex" in Journal of Thermal Analysis and Calorimetry, 130, no. 2 (2017):701-711,
https://doi.org/10.1007/s10973-017-6458-2 . .

TY  - JOUR
AU  - Filipović, Nenad
AU  - Bjelogrlić, Snežana
AU  - Todorović, Tamara R.
AU  - Blagojević, Vladimir A.
AU  - Muller, Christian D.
AU  - Marinković, Aleksandar
AU  - Vujcić, Miroslava
AU  - Janović, Barbara
AU  - Malesević, Aleksandar
AU  - Begović, Nebojša
AU  - Sencanski, Milan
AU  - Minić, Dragica M.
PY  - 2016
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4060
AB  - A new Ni(II) complex, [Ni(L)(H2O)] (1), with diethyl 3,3'-(2,2'-(1,1'-(pyridine-2,6-diyl) bis(ethan-1-yl-1-ylidene)) bis(hydrazin-1-yl-2-ylidene)) bis(3-oxopropanoate) ligand (H2L) was synthesized as a potential chemotherapeutic agent. Polidentate ligand was coordinated to Ni(II) NNN-tridentately, in dianionic form, while monodentate water coordination completed square-planar geometry around metal. Structure in the solution was determined by NMR spectroscopy and the same coordination mode was observed in the solid state using IR spectroscopy and further verified by DFT calculations and electrochemical studies. Thermal stability of 1 was determined in both air and nitrogen atmosphere. Anticancer activity of 1 was investigated on acute monocytic leukemia (THP-1) and pancreatic adenocarcinoma (AsPC-1) cell lines. On THP-1 cells 1 induced powerful apoptotic response (ED50 = 10 +/- 3 mu M), which was revealed to be only partially caspase-dependent, with activation of caspase-8 as the dominant course. This suggested that experimentally validated covalent binding of 1 to DNA is not the only mechanism responsible for programmed cell death. This was supported with experiments on AsPC-1 cells. Although treatment of those cells with 1 resulted in poor apoptotic response, cell cycle changes showed concentration-dependent shifts indicating a dual mechanism of activity. This study also reviews the results of preliminary biological screening, which demonstrates that 1 displays a unique pattern of anticancer activity with at least two mechanisms involved.
PB  - Royal Soc Chemistry, Cambridge
T2  - RSC Advances
T1  - Ni(II) complex with bishydrazone ligand: synthesis, characterization, DNA binding studies and pro-apoptotic and pro-differentiation induction in human cancerous cell lines
EP  - 108740
IS  - 110
SP  - 108726
VL  - 6
DO  - 10.1039/c6ra24604d
ER  - 

@article{
author = "Filipović, Nenad and Bjelogrlić, Snežana and Todorović, Tamara R. and Blagojević, Vladimir A. and Muller, Christian D. and Marinković, Aleksandar and Vujcić, Miroslava and Janović, Barbara and Malesević, Aleksandar and Begović, Nebojša and Sencanski, Milan and Minić, Dragica M.",
year = "2016",
abstract = "A new Ni(II) complex, [Ni(L)(H2O)] (1), with diethyl 3,3'-(2,2'-(1,1'-(pyridine-2,6-diyl) bis(ethan-1-yl-1-ylidene)) bis(hydrazin-1-yl-2-ylidene)) bis(3-oxopropanoate) ligand (H2L) was synthesized as a potential chemotherapeutic agent. Polidentate ligand was coordinated to Ni(II) NNN-tridentately, in dianionic form, while monodentate water coordination completed square-planar geometry around metal. Structure in the solution was determined by NMR spectroscopy and the same coordination mode was observed in the solid state using IR spectroscopy and further verified by DFT calculations and electrochemical studies. Thermal stability of 1 was determined in both air and nitrogen atmosphere. Anticancer activity of 1 was investigated on acute monocytic leukemia (THP-1) and pancreatic adenocarcinoma (AsPC-1) cell lines. On THP-1 cells 1 induced powerful apoptotic response (ED50 = 10 +/- 3 mu M), which was revealed to be only partially caspase-dependent, with activation of caspase-8 as the dominant course. This suggested that experimentally validated covalent binding of 1 to DNA is not the only mechanism responsible for programmed cell death. This was supported with experiments on AsPC-1 cells. Although treatment of those cells with 1 resulted in poor apoptotic response, cell cycle changes showed concentration-dependent shifts indicating a dual mechanism of activity. This study also reviews the results of preliminary biological screening, which demonstrates that 1 displays a unique pattern of anticancer activity with at least two mechanisms involved.",
publisher = "Royal Soc Chemistry, Cambridge",
journal = "RSC Advances",
title = "Ni(II) complex with bishydrazone ligand: synthesis, characterization, DNA binding studies and pro-apoptotic and pro-differentiation induction in human cancerous cell lines",
pages = "108740-108726",
number = "110",
volume = "6",
doi = "10.1039/c6ra24604d"
}

Filipović, N., Bjelogrlić, S., Todorović, T. R., Blagojević, V. A., Muller, C. D., Marinković, A., Vujcić, M., Janović, B., Malesević, A., Begović, N., Sencanski, M.,& Minić, D. M.. (2016). Ni(II) complex with bishydrazone ligand: synthesis, characterization, DNA binding studies and pro-apoptotic and pro-differentiation induction in human cancerous cell lines. in RSC Advances
Royal Soc Chemistry, Cambridge., 6(110), 108726-108740.
https://doi.org/10.1039/c6ra24604d

Filipović N, Bjelogrlić S, Todorović TR, Blagojević VA, Muller CD, Marinković A, Vujcić M, Janović B, Malesević A, Begović N, Sencanski M, Minić DM. Ni(II) complex with bishydrazone ligand: synthesis, characterization, DNA binding studies and pro-apoptotic and pro-differentiation induction in human cancerous cell lines. in RSC Advances. 2016;6(110):108726-108740.
doi:10.1039/c6ra24604d .

Filipović, Nenad, Bjelogrlić, Snežana, Todorović, Tamara R., Blagojević, Vladimir A., Muller, Christian D., Marinković, Aleksandar, Vujcić, Miroslava, Janović, Barbara, Malesević, Aleksandar, Begović, Nebojša, Sencanski, Milan, Minić, Dragica M., "Ni(II) complex with bishydrazone ligand: synthesis, characterization, DNA binding studies and pro-apoptotic and pro-differentiation induction in human cancerous cell lines" in RSC Advances, 6, no. 110 (2016):108726-108740,
https://doi.org/10.1039/c6ra24604d . .

TY  - JOUR
AU  - Vasić, Milica M.
AU  - Blagojević, Vladimir A.
AU  - Begović, Nebojša
AU  - Zak, Tomas
AU  - Pavlović, Vladimir
AU  - Minić, Dragica M.
PY  - 2015
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3703
AB  - The crystallization mechanism and kinetics of Fe40Ni40P14B6 amorphous alloy were studied under non-isothermal conditions. Thermal stabilization of this alloy manifests in DSC through two complex peaks, corresponding to crystallization and recrystallization, respectively. The complex crystallization DSC peak was deconvoluted into individual steps corresponding to crystallization of individual phases, where the results using both Gaussian-Lorentzian cross-product and Fraser-Suzuki function were compared. It was determined that the values of kinetic triplets of the individual steps did not exhibit any significant difference, depending on the deconvolution function. Anisotropic growth was indicated to be the prevailing type of impingement for all crystallization steps. Using the calculated values of the respective kinetic triplets and the mechanisms determined from the value of Avrami exponent, distinct values of activation energies for nucleation and crystal growth for crystallization of each individual phase were calculated, showing significantly higher values for nucleation than those for crystal growth. Alloy samples treated non-isothermally in the DSC cell exhibit inhomogeneous surface morphology with highly granulated structure dependent on heating rate.
PB  - Elsevier Science Bv, Amsterdam
T2  - Thermochimica Acta
T1  - Thermally induced crystallization of amorphous Fe40Ni40P14B6 alloy
EP  - 136
SP  - 129
VL  - 614
DO  - 10.1016/j.tca.2015.06.015
ER  - 

@article{
author = "Vasić, Milica M. and Blagojević, Vladimir A. and Begović, Nebojša and Zak, Tomas and Pavlović, Vladimir and Minić, Dragica M.",
year = "2015",
abstract = "The crystallization mechanism and kinetics of Fe40Ni40P14B6 amorphous alloy were studied under non-isothermal conditions. Thermal stabilization of this alloy manifests in DSC through two complex peaks, corresponding to crystallization and recrystallization, respectively. The complex crystallization DSC peak was deconvoluted into individual steps corresponding to crystallization of individual phases, where the results using both Gaussian-Lorentzian cross-product and Fraser-Suzuki function were compared. It was determined that the values of kinetic triplets of the individual steps did not exhibit any significant difference, depending on the deconvolution function. Anisotropic growth was indicated to be the prevailing type of impingement for all crystallization steps. Using the calculated values of the respective kinetic triplets and the mechanisms determined from the value of Avrami exponent, distinct values of activation energies for nucleation and crystal growth for crystallization of each individual phase were calculated, showing significantly higher values for nucleation than those for crystal growth. Alloy samples treated non-isothermally in the DSC cell exhibit inhomogeneous surface morphology with highly granulated structure dependent on heating rate.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Thermochimica Acta",
title = "Thermally induced crystallization of amorphous Fe40Ni40P14B6 alloy",
pages = "136-129",
volume = "614",
doi = "10.1016/j.tca.2015.06.015"
}

Vasić, M. M., Blagojević, V. A., Begović, N., Zak, T., Pavlović, V.,& Minić, D. M.. (2015). Thermally induced crystallization of amorphous Fe40Ni40P14B6 alloy. in Thermochimica Acta
Elsevier Science Bv, Amsterdam., 614, 129-136.
https://doi.org/10.1016/j.tca.2015.06.015

Vasić MM, Blagojević VA, Begović N, Zak T, Pavlović V, Minić DM. Thermally induced crystallization of amorphous Fe40Ni40P14B6 alloy. in Thermochimica Acta. 2015;614:129-136.
doi:10.1016/j.tca.2015.06.015 .

Vasić, Milica M., Blagojević, Vladimir A., Begović, Nebojša, Zak, Tomas, Pavlović, Vladimir, Minić, Dragica M., "Thermally induced crystallization of amorphous Fe40Ni40P14B6 alloy" in Thermochimica Acta, 614 (2015):129-136,
https://doi.org/10.1016/j.tca.2015.06.015 . .

TY  - JOUR
AU  - Begović, Nebojša
AU  - Blagojević, Vladimir A.
AU  - Ostojić, Sanja
AU  - Micić, Darko
AU  - Filipović, Nenad
AU  - Andjelković, Katarina
AU  - Minić, Dragica M.
PY  - 2014
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3447
AB  - Thermal stability of a series of palladium(II) complexes with N-heteroaromatic bidentate hydrazone ligands was investigated using a combination of experimental measurements and DFT calculations. All complexes exhibit a reversible second-order transition around 333 K, which can be attributed to structural reorganization of the ligand molecules. Thermal degradation begins in 570-610 K temperature region, with an endothermic peak, followed by exothermic peaks in DSC. TG measurements show a well-defined mass loss corresponding to the initial degradation, while subsequent processes are poorly separated. DFT calculations suggest that the initial degradation step occurs with release of Cl, which then reacts with remaining part of the complex molecule in an exothermic process. This leads to decomposition of the ligand molecule into four fragments corresponding to ethyl chloride, carbon dioxide, methyl amine, and the fragment with the aromatic group. Mass spectrum suggests that creation of these fragments most likely corresponds to the initial degradation, after which some of these coordinate to Pd center, whose coordination sphere is left incomplete by release of Cl. TG measurement to 1123 K indicates that the final degradation product at this temperature is palladium.
PB  - Elsevier, Amsterdam
T2  - Thermochimica Acta
T1  - Thermally induced structural transformations of a series of palladium(II) complexes with N-heteroaromatic bidentate hydrazone ligands
EP  - 30
SP  - 23
VL  - 592
DO  - 10.1016/j.tca.2014.08.005
ER  - 

@article{
author = "Begović, Nebojša and Blagojević, Vladimir A. and Ostojić, Sanja and Micić, Darko and Filipović, Nenad and Andjelković, Katarina and Minić, Dragica M.",
year = "2014",
abstract = "Thermal stability of a series of palladium(II) complexes with N-heteroaromatic bidentate hydrazone ligands was investigated using a combination of experimental measurements and DFT calculations. All complexes exhibit a reversible second-order transition around 333 K, which can be attributed to structural reorganization of the ligand molecules. Thermal degradation begins in 570-610 K temperature region, with an endothermic peak, followed by exothermic peaks in DSC. TG measurements show a well-defined mass loss corresponding to the initial degradation, while subsequent processes are poorly separated. DFT calculations suggest that the initial degradation step occurs with release of Cl, which then reacts with remaining part of the complex molecule in an exothermic process. This leads to decomposition of the ligand molecule into four fragments corresponding to ethyl chloride, carbon dioxide, methyl amine, and the fragment with the aromatic group. Mass spectrum suggests that creation of these fragments most likely corresponds to the initial degradation, after which some of these coordinate to Pd center, whose coordination sphere is left incomplete by release of Cl. TG measurement to 1123 K indicates that the final degradation product at this temperature is palladium.",
publisher = "Elsevier, Amsterdam",
journal = "Thermochimica Acta",
title = "Thermally induced structural transformations of a series of palladium(II) complexes with N-heteroaromatic bidentate hydrazone ligands",
pages = "30-23",
volume = "592",
doi = "10.1016/j.tca.2014.08.005"
}

Begović, N., Blagojević, V. A., Ostojić, S., Micić, D., Filipović, N., Andjelković, K.,& Minić, D. M.. (2014). Thermally induced structural transformations of a series of palladium(II) complexes with N-heteroaromatic bidentate hydrazone ligands. in Thermochimica Acta
Elsevier, Amsterdam., 592, 23-30.
https://doi.org/10.1016/j.tca.2014.08.005

Begović N, Blagojević VA, Ostojić S, Micić D, Filipović N, Andjelković K, Minić DM. Thermally induced structural transformations of a series of palladium(II) complexes with N-heteroaromatic bidentate hydrazone ligands. in Thermochimica Acta. 2014;592:23-30.
doi:10.1016/j.tca.2014.08.005 .

Begović, Nebojša, Blagojević, Vladimir A., Ostojić, Sanja, Micić, Darko, Filipović, Nenad, Andjelković, Katarina, Minić, Dragica M., "Thermally induced structural transformations of a series of palladium(II) complexes with N-heteroaromatic bidentate hydrazone ligands" in Thermochimica Acta, 592 (2014):23-30,
https://doi.org/10.1016/j.tca.2014.08.005 . .