TY  - JOUR
AU  - Minić, Dragica M.
AU  - Šumar-Ristović, Maja
AU  - Miodragović Đenana U.
AU  - Anđelković, Katarina K.
AU  - Poleti, Dejan
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5695
AB  - The kinetics of multi-step thermal degradation of Co(II) complex with N-benzyloxycarbonyl glycinato ligand [Co(N-Boc-gly)(2)(H2O)(4)]center dot 2H(2)O, in non-isothermal conditions was studied using isoconversional and non-isoconversional methods. The degradation of complex occurs in three well-separated steps involving the loss of water molecules in first step followed by two degradation steps of dehydrated complex. The dependence of Arrhenius parameters on conversion degree showed that all observed steps of thermal degradation are very complex, involving more than one elementary step, as can be expected for most solid-state heterogeneous reactions with solid reactants and solid and gaseous products. It was shown that step 1, corresponding to the dehydration, involves a series of competitive dehydration steps of differently bound water molecules complicated by diffusion. Second step involves two parallel reactions related to the loss of two identical C6H5CH2O-ligand fragments complicated by the presence of products in gaseous state. Further degradation in step 3 corresponds to complex process with a change in the limiting stage, in this case from the kinetic to the diffusion regime, connected with the presence of gaseous products diffusing through the solid product.
PB  - Springer, Dordrecht
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Kinetics and mechanism of degradation of Co(II)-N-benzyloxycarbonylglycinato complex
EP  - 1176
IS  - 3
SP  - 1167
VL  - 107
DO  - 10.1007/s10973-011-1368-1
ER  - 

@article{
author = "Minić, Dragica M. and Šumar-Ristović, Maja and Miodragović Đenana U. and Anđelković, Katarina K. and Poleti, Dejan",
year = "2012",
abstract = "The kinetics of multi-step thermal degradation of Co(II) complex with N-benzyloxycarbonyl glycinato ligand [Co(N-Boc-gly)(2)(H2O)(4)]center dot 2H(2)O, in non-isothermal conditions was studied using isoconversional and non-isoconversional methods. The degradation of complex occurs in three well-separated steps involving the loss of water molecules in first step followed by two degradation steps of dehydrated complex. The dependence of Arrhenius parameters on conversion degree showed that all observed steps of thermal degradation are very complex, involving more than one elementary step, as can be expected for most solid-state heterogeneous reactions with solid reactants and solid and gaseous products. It was shown that step 1, corresponding to the dehydration, involves a series of competitive dehydration steps of differently bound water molecules complicated by diffusion. Second step involves two parallel reactions related to the loss of two identical C6H5CH2O-ligand fragments complicated by the presence of products in gaseous state. Further degradation in step 3 corresponds to complex process with a change in the limiting stage, in this case from the kinetic to the diffusion regime, connected with the presence of gaseous products diffusing through the solid product.",
publisher = "Springer, Dordrecht",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Kinetics and mechanism of degradation of Co(II)-N-benzyloxycarbonylglycinato complex",
pages = "1176-1167",
number = "3",
volume = "107",
doi = "10.1007/s10973-011-1368-1"
}

Minić, D. M., Šumar-Ristović, M., Miodragović Đenana U., Anđelković, K. K.,& Poleti, D.. (2012). Kinetics and mechanism of degradation of Co(II)-N-benzyloxycarbonylglycinato complex. in Journal of Thermal Analysis and Calorimetry
Springer, Dordrecht., 107(3), 1167-1176.
https://doi.org/10.1007/s10973-011-1368-1

Minić DM, Šumar-Ristović M, Miodragović Đenana U., Anđelković KK, Poleti D. Kinetics and mechanism of degradation of Co(II)-N-benzyloxycarbonylglycinato complex. in Journal of Thermal Analysis and Calorimetry. 2012;107(3):1167-1176.
doi:10.1007/s10973-011-1368-1 .

Minić, Dragica M., Šumar-Ristović, Maja, Miodragović Đenana U., Anđelković, Katarina K., Poleti, Dejan, "Kinetics and mechanism of degradation of Co(II)-N-benzyloxycarbonylglycinato complex" in Journal of Thermal Analysis and Calorimetry, 107, no. 3 (2012):1167-1176,
https://doi.org/10.1007/s10973-011-1368-1 . .

TY  - JOUR
AU  - Šumar-Ristović, Maja
AU  - Gruden-Pavlović, Maja
AU  - Zlatar, Matija
AU  - Blagojević, Vladimir A.
AU  - Anđelković, Katarina K.
AU  - Poleti, Dejan
AU  - Minić, Dragica M.
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5696
AB  - A Zn(II) complex with N-benzyloxycarbonylglycinato ligands was studied by non-isothermal methods, in particular Kissinger-Akahira-Sunose's method, and further analysis of these results was performed by Vyazovkin's algorithm and an artificial compensation effect. Density functional theory calculations of thermodynamic quantities were performed, and results obtained by both methods are consistent, thus clarifying the mechanism of this very interesting multi-step degradation.
PB  - Springer Wien, Wien
T2  - Monatshefte Fur Chemie
T1  - Kinetics, mechanism, and DFT calculations of thermal degradation of a Zn(II) complex with N-benzyloxycarbonylglycinato ligands
EP  - 1139
IS  - 8
SP  - 1133
VL  - 143
DO  - 10.1007/s00706-012-0793-6
ER  - 

@article{
author = "Šumar-Ristović, Maja and Gruden-Pavlović, Maja and Zlatar, Matija and Blagojević, Vladimir A. and Anđelković, Katarina K. and Poleti, Dejan and Minić, Dragica M.",
year = "2012",
abstract = "A Zn(II) complex with N-benzyloxycarbonylglycinato ligands was studied by non-isothermal methods, in particular Kissinger-Akahira-Sunose's method, and further analysis of these results was performed by Vyazovkin's algorithm and an artificial compensation effect. Density functional theory calculations of thermodynamic quantities were performed, and results obtained by both methods are consistent, thus clarifying the mechanism of this very interesting multi-step degradation.",
publisher = "Springer Wien, Wien",
journal = "Monatshefte Fur Chemie",
title = "Kinetics, mechanism, and DFT calculations of thermal degradation of a Zn(II) complex with N-benzyloxycarbonylglycinato ligands",
pages = "1139-1133",
number = "8",
volume = "143",
doi = "10.1007/s00706-012-0793-6"
}

Šumar-Ristović, M., Gruden-Pavlović, M., Zlatar, M., Blagojević, V. A., Anđelković, K. K., Poleti, D.,& Minić, D. M.. (2012). Kinetics, mechanism, and DFT calculations of thermal degradation of a Zn(II) complex with N-benzyloxycarbonylglycinato ligands. in Monatshefte Fur Chemie
Springer Wien, Wien., 143(8), 1133-1139.
https://doi.org/10.1007/s00706-012-0793-6

Šumar-Ristović M, Gruden-Pavlović M, Zlatar M, Blagojević VA, Anđelković KK, Poleti D, Minić DM. Kinetics, mechanism, and DFT calculations of thermal degradation of a Zn(II) complex with N-benzyloxycarbonylglycinato ligands. in Monatshefte Fur Chemie. 2012;143(8):1133-1139.
doi:10.1007/s00706-012-0793-6 .

Šumar-Ristović, Maja, Gruden-Pavlović, Maja, Zlatar, Matija, Blagojević, Vladimir A., Anđelković, Katarina K., Poleti, Dejan, Minić, Dragica M., "Kinetics, mechanism, and DFT calculations of thermal degradation of a Zn(II) complex with N-benzyloxycarbonylglycinato ligands" in Monatshefte Fur Chemie, 143, no. 8 (2012):1133-1139,
https://doi.org/10.1007/s00706-012-0793-6 . .

TY  - JOUR
AU  - Šumar-Ristović, Maja
AU  - Anđelković, Katarina K.
AU  - Poleti, Dejan
AU  - Minić, Dragica M.
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5662
AB  - Multi-step thermal degradation of coordination polymer [Cd(N-Boc-gly)(2)(H2O)(2)](n) in non-isothermal conditions was studied. The kinetic parameters were determined from the thermal decomposition data using the isoconversion and non-isoconversion techniques. It was shown that the coordination polymer is stable up to 60 C, when the multi-step process of thermal dehydration, followed by steps of degradation, starts. The kinetic triplet for the step of dehydration was established as f(alpha) = 3/2(1 - alpha)(2/3)[1 - (1 - alpha)(1/3)](-1). E-inv = 170.4 +/- 6.4 kJ mol(-1) and Z(inv) =2.6 x 10(23). The established kinetic model, known as "D3 model", was confirmed by application criteria defined by Malek, Perez-Maqueda et al. as well as Master plot method. Dehydration step is followed by two steps of dehydrated coordination polymer degradation. On the base of the dependence of Arrhenius parameters (E-a and Z) on conversion degree (alpha), the mechanisms of degradation were discussed. In this way it was shown that second and third steps of degradation of coordination polymer are complex involving more than one elementary step. The second step corresponds to the loss of two C6H5CH2O- fragments in two parallel steps. The third step of degradation, ascribed to the loss of two -C(=O)NHCH2- fragments, is complicated by changing kinetically to diffusion control. (C) 2011 Elsevier B.V. All rights reserved.
PB  - Elsevier Science Bv, Amsterdam
T2  - Thermochimica Acta
T1  - Thermal degradation of coordination polymer [Cd(N-Boc-gly)(2)(H2O)(2)](n)
EP  - 30
IS  - 1-2
SP  - 25
VL  - 525
DO  - 10.1016/j.tca.2011.07.017
ER  - 

@article{
author = "Šumar-Ristović, Maja and Anđelković, Katarina K. and Poleti, Dejan and Minić, Dragica M.",
year = "2011",
abstract = "Multi-step thermal degradation of coordination polymer [Cd(N-Boc-gly)(2)(H2O)(2)](n) in non-isothermal conditions was studied. The kinetic parameters were determined from the thermal decomposition data using the isoconversion and non-isoconversion techniques. It was shown that the coordination polymer is stable up to 60 C, when the multi-step process of thermal dehydration, followed by steps of degradation, starts. The kinetic triplet for the step of dehydration was established as f(alpha) = 3/2(1 - alpha)(2/3)[1 - (1 - alpha)(1/3)](-1). E-inv = 170.4 +/- 6.4 kJ mol(-1) and Z(inv) =2.6 x 10(23). The established kinetic model, known as "D3 model", was confirmed by application criteria defined by Malek, Perez-Maqueda et al. as well as Master plot method. Dehydration step is followed by two steps of dehydrated coordination polymer degradation. On the base of the dependence of Arrhenius parameters (E-a and Z) on conversion degree (alpha), the mechanisms of degradation were discussed. In this way it was shown that second and third steps of degradation of coordination polymer are complex involving more than one elementary step. The second step corresponds to the loss of two C6H5CH2O- fragments in two parallel steps. The third step of degradation, ascribed to the loss of two -C(=O)NHCH2- fragments, is complicated by changing kinetically to diffusion control. (C) 2011 Elsevier B.V. All rights reserved.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Thermochimica Acta",
title = "Thermal degradation of coordination polymer [Cd(N-Boc-gly)(2)(H2O)(2)](n)",
pages = "30-25",
number = "1-2",
volume = "525",
doi = "10.1016/j.tca.2011.07.017"
}

Šumar-Ristović, M., Anđelković, K. K., Poleti, D.,& Minić, D. M.. (2011). Thermal degradation of coordination polymer [Cd(N-Boc-gly)(2)(H2O)(2)](n). in Thermochimica Acta
Elsevier Science Bv, Amsterdam., 525(1-2), 25-30.
https://doi.org/10.1016/j.tca.2011.07.017

Šumar-Ristović M, Anđelković KK, Poleti D, Minić DM. Thermal degradation of coordination polymer [Cd(N-Boc-gly)(2)(H2O)(2)](n). in Thermochimica Acta. 2011;525(1-2):25-30.
doi:10.1016/j.tca.2011.07.017 .

Šumar-Ristović, Maja, Anđelković, Katarina K., Poleti, Dejan, Minić, Dragica M., "Thermal degradation of coordination polymer [Cd(N-Boc-gly)(2)(H2O)(2)](n)" in Thermochimica Acta, 525, no. 1-2 (2011):25-30,
https://doi.org/10.1016/j.tca.2011.07.017 . .

TY  - JOUR
AU  - Šumar-Ristović, Maja
AU  - Minić, Dragica M.
AU  - Poleti, Dejan
AU  - Miodragović, Zoran
AU  - Miodragović Đenana U.
AU  - Anđelković, Katarina K.
PY  - 2010
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5620
AB  - Thermal behavior of Co(II), Cd(II), and Zn(II) complexes with N-benzyloxycarbonylglycinato ligand was investigated using the results of TG, DSC and DTG analysis obtained at different heating rates (2.5 to 30 A degrees C min(-1)), from room temperature to about 900 A degrees C. Mechanisms of complex degradation, as well as enthalpies of the degradation processes were determined. It is shown that thermal stability of investigated complexes correlates with their crystal structures, especially with the presence of crystallization and coordinated water molecules. The values of dehydration enthalpies are discussed and correlated with composition of the complexes. Kissinger's, Ozawa's, and Friedman's isoconversion methods were used for the determination of kinetic parameters: the pre-exponential factor A and the apparent activation energy E (a). For all three complexes and all steps of degradation, the values of kinetics parameters obtained by Kissinger's and Ozawa's methods are in good agreement. The results obtained by Friedman's method showed that some decomposition steps are simple and some others are complex ones.
PB  - Springer, Dordrecht
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Thermal stability and degradation of Co(II), Cd(II), and Zn(II) complexes with N-benzyloxycarbonylglycinato ligand
EP  - 90
IS  - 1
SP  - 83
VL  - 102
DO  - 10.1007/s10973-010-0748-2
ER  - 

@article{
author = "Šumar-Ristović, Maja and Minić, Dragica M. and Poleti, Dejan and Miodragović, Zoran and Miodragović Đenana U. and Anđelković, Katarina K.",
year = "2010",
abstract = "Thermal behavior of Co(II), Cd(II), and Zn(II) complexes with N-benzyloxycarbonylglycinato ligand was investigated using the results of TG, DSC and DTG analysis obtained at different heating rates (2.5 to 30 A degrees C min(-1)), from room temperature to about 900 A degrees C. Mechanisms of complex degradation, as well as enthalpies of the degradation processes were determined. It is shown that thermal stability of investigated complexes correlates with their crystal structures, especially with the presence of crystallization and coordinated water molecules. The values of dehydration enthalpies are discussed and correlated with composition of the complexes. Kissinger's, Ozawa's, and Friedman's isoconversion methods were used for the determination of kinetic parameters: the pre-exponential factor A and the apparent activation energy E (a). For all three complexes and all steps of degradation, the values of kinetics parameters obtained by Kissinger's and Ozawa's methods are in good agreement. The results obtained by Friedman's method showed that some decomposition steps are simple and some others are complex ones.",
publisher = "Springer, Dordrecht",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Thermal stability and degradation of Co(II), Cd(II), and Zn(II) complexes with N-benzyloxycarbonylglycinato ligand",
pages = "90-83",
number = "1",
volume = "102",
doi = "10.1007/s10973-010-0748-2"
}

Šumar-Ristović, M., Minić, D. M., Poleti, D., Miodragović, Z., Miodragović Đenana U.,& Anđelković, K. K.. (2010). Thermal stability and degradation of Co(II), Cd(II), and Zn(II) complexes with N-benzyloxycarbonylglycinato ligand. in Journal of Thermal Analysis and Calorimetry
Springer, Dordrecht., 102(1), 83-90.
https://doi.org/10.1007/s10973-010-0748-2

Šumar-Ristović M, Minić DM, Poleti D, Miodragović Z, Miodragović Đenana U., Anđelković KK. Thermal stability and degradation of Co(II), Cd(II), and Zn(II) complexes with N-benzyloxycarbonylglycinato ligand. in Journal of Thermal Analysis and Calorimetry. 2010;102(1):83-90.
doi:10.1007/s10973-010-0748-2 .

Šumar-Ristović, Maja, Minić, Dragica M., Poleti, Dejan, Miodragović, Zoran, Miodragović Đenana U., Anđelković, Katarina K., "Thermal stability and degradation of Co(II), Cd(II), and Zn(II) complexes with N-benzyloxycarbonylglycinato ligand" in Journal of Thermal Analysis and Calorimetry, 102, no. 1 (2010):83-90,
https://doi.org/10.1007/s10973-010-0748-2 . .