The thermal decompositions of the complexes K-3[M(ox)(3)]. 3H(2)O (M=Al, Cr, Mn, Fe, Co; ox=C2O42-) were studied. Dehydration of the complexes occurs up to 200 degreesC, this being a three-step process for M=Al, Cr, Mn and Co, and a two-step process for M=Fe. Decomposition of the dehydrated complexes proceeds in several steps. For M=Al, Cr and Fe, the decomposition takes place with the evolution of CO, whereas for M=Mn and Co the decomposition of the oxalate ligand yields solid C besides CO. The temperature of CO liberation decreases in the series Cr lt Al lt Co lt Mn lt Fe. For M=transition metal, this trend can be explained by the fact that the strength of the C-C bond in the oxalate ligand decreases in the series Cr lt Co lt Mn lt Fe.
Keywords:
metal oxalate complexes / PM3(tm) calculations / thermogravimetry
Source:
Journal of Thermal Analysis and Calorimetry, 2001, 63, 1, 191-195
TY - JOUR
AU - Rajić, Nevenka
AU - Stojaković, D.
AU - Gabrovsek, R
PY - 2001
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/354
AB - The thermal decompositions of the complexes K-3[M(ox)(3)]. 3H(2)O (M=Al, Cr, Mn, Fe, Co; ox=C2O42-) were studied. Dehydration of the complexes occurs up to 200 degreesC, this being a three-step process for M=Al, Cr, Mn and Co, and a two-step process for M=Fe. Decomposition of the dehydrated complexes proceeds in several steps. For M=Al, Cr and Fe, the decomposition takes place with the evolution of CO, whereas for M=Mn and Co the decomposition of the oxalate ligand yields solid C besides CO. The temperature of CO liberation decreases in the series Cr lt Al lt Co lt Mn lt Fe. For M=transition metal, this trend can be explained by the fact that the strength of the C-C bond in the oxalate ligand decreases in the series Cr lt Co lt Mn lt Fe.
PB - Springer, Dordrecht
T2 - Journal of Thermal Analysis and Calorimetry
T1 - On the thermal decompositions of the trivalent trioxalato complexes of Al, Cr, Mn, Fe and Co
EP - 195
IS - 1
SP - 191
VL - 63
UR - https://hdl.handle.net/21.15107/rcub_technorep_354
ER -
@article{
author = "Rajić, Nevenka and Stojaković, D. and Gabrovsek, R",
year = "2001",
abstract = "The thermal decompositions of the complexes K-3[M(ox)(3)]. 3H(2)O (M=Al, Cr, Mn, Fe, Co; ox=C2O42-) were studied. Dehydration of the complexes occurs up to 200 degreesC, this being a three-step process for M=Al, Cr, Mn and Co, and a two-step process for M=Fe. Decomposition of the dehydrated complexes proceeds in several steps. For M=Al, Cr and Fe, the decomposition takes place with the evolution of CO, whereas for M=Mn and Co the decomposition of the oxalate ligand yields solid C besides CO. The temperature of CO liberation decreases in the series Cr lt Al lt Co lt Mn lt Fe. For M=transition metal, this trend can be explained by the fact that the strength of the C-C bond in the oxalate ligand decreases in the series Cr lt Co lt Mn lt Fe.",
publisher = "Springer, Dordrecht",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "On the thermal decompositions of the trivalent trioxalato complexes of Al, Cr, Mn, Fe and Co",
pages = "195-191",
number = "1",
volume = "63",
url = "https://hdl.handle.net/21.15107/rcub_technorep_354"
}
Rajić, N., Stojaković, D.,& Gabrovsek, R.. (2001). On the thermal decompositions of the trivalent trioxalato complexes of Al, Cr, Mn, Fe and Co. in Journal of Thermal Analysis and Calorimetry
Springer, Dordrecht., 63(1), 191-195.
https://hdl.handle.net/21.15107/rcub_technorep_354
Rajić N, Stojaković D, Gabrovsek R. On the thermal decompositions of the trivalent trioxalato complexes of Al, Cr, Mn, Fe and Co. in Journal of Thermal Analysis and Calorimetry. 2001;63(1):191-195.
https://hdl.handle.net/21.15107/rcub_technorep_354 .
Rajić, Nevenka, Stojaković, D., Gabrovsek, R, "On the thermal decompositions of the trivalent trioxalato complexes of Al, Cr, Mn, Fe and Co" in Journal of Thermal Analysis and Calorimetry, 63, no. 1 (2001):191-195,
https://hdl.handle.net/21.15107/rcub_technorep_354 .
