Mixed cobalt(III) complexes with aromatic amino acids and diamine: Part V. Thermal investigation of (1,2-diaminoethane)bis(S-tyrosinato)cobalt(III) complex diastereomers
Само за регистроване кориснике
2005
Аутори
Miodragović, Dj.U.Miodragović, Zoran M.
Skala, Dejan
Malinar, Mijat J.
Minić, Dragica M.
Anđelković, Katarina
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Thermal properties of (1,2-diaminoethane)bis(S-tyrosinato)cobalt(III) complex diastereomers are investigated by means of TG technique in 293-873 K temperature range. This is a first thermal study of [Co(S-aa) 2 en] + (S-aa = anion of S-amino acid; en = 1,2-diaminoethane) complex diastereomers. It is shown that thermal decompositions of these complexes are multi-step degradation processes, which in some cases can be satisfactory separated into individual steps, depending on the molecular symmetry. It is proposed that the degradation processes occur with cleavage of the side chain of one S-tyrosinato ligand, followed by the cleavage of the second side chain by further heating. The proposed pathways of decomposition are in accordance with results of thermal degradation of noncoordinated S-tyrosine [F. Rodante, G. Marrosu, G. Catalani, Thermochim. Acta 194 (1992) 197-213]. In the case of diastereomers which crystallize with water molecules, the departure of both hygroscopic and crystal wat...er occurs before. The corresponding kinetic and thermodynamic parameters of some processes were determined.
Кључне речи:
Cobalt(III) complexes / S-tyrosine / Thermal analysisИзвор:
Thermochimica Acta, 2005, 436, 1-2, 90-95Издавач:
- Elsevier
Финансирање / пројекти:
- Thanks are due to the Ministry of Science and Technology of the Republic of Serbia for financial support (Projects no. 1318 and 1253).
DOI: 10.1016/j.tca.2004.07.007
ISSN: 0040-6031
WoS: 000232179700014
Scopus: 2-s2.0-24344482084
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Miodragović, Dj.U. AU - Miodragović, Zoran M. AU - Skala, Dejan AU - Malinar, Mijat J. AU - Minić, Dragica M. AU - Anđelković, Katarina PY - 2005 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5465 AB - Thermal properties of (1,2-diaminoethane)bis(S-tyrosinato)cobalt(III) complex diastereomers are investigated by means of TG technique in 293-873 K temperature range. This is a first thermal study of [Co(S-aa) 2 en] + (S-aa = anion of S-amino acid; en = 1,2-diaminoethane) complex diastereomers. It is shown that thermal decompositions of these complexes are multi-step degradation processes, which in some cases can be satisfactory separated into individual steps, depending on the molecular symmetry. It is proposed that the degradation processes occur with cleavage of the side chain of one S-tyrosinato ligand, followed by the cleavage of the second side chain by further heating. The proposed pathways of decomposition are in accordance with results of thermal degradation of noncoordinated S-tyrosine [F. Rodante, G. Marrosu, G. Catalani, Thermochim. Acta 194 (1992) 197-213]. In the case of diastereomers which crystallize with water molecules, the departure of both hygroscopic and crystal water occurs before. The corresponding kinetic and thermodynamic parameters of some processes were determined. PB - Elsevier T2 - Thermochimica Acta T1 - Mixed cobalt(III) complexes with aromatic amino acids and diamine: Part V. Thermal investigation of (1,2-diaminoethane)bis(S-tyrosinato)cobalt(III) complex diastereomers EP - 95 IS - 1-2 SP - 90 VL - 436 DO - 10.1016/j.tca.2004.07.007 ER -
@article{ author = "Miodragović, Dj.U. and Miodragović, Zoran M. and Skala, Dejan and Malinar, Mijat J. and Minić, Dragica M. and Anđelković, Katarina", year = "2005", abstract = "Thermal properties of (1,2-diaminoethane)bis(S-tyrosinato)cobalt(III) complex diastereomers are investigated by means of TG technique in 293-873 K temperature range. This is a first thermal study of [Co(S-aa) 2 en] + (S-aa = anion of S-amino acid; en = 1,2-diaminoethane) complex diastereomers. It is shown that thermal decompositions of these complexes are multi-step degradation processes, which in some cases can be satisfactory separated into individual steps, depending on the molecular symmetry. It is proposed that the degradation processes occur with cleavage of the side chain of one S-tyrosinato ligand, followed by the cleavage of the second side chain by further heating. The proposed pathways of decomposition are in accordance with results of thermal degradation of noncoordinated S-tyrosine [F. Rodante, G. Marrosu, G. Catalani, Thermochim. Acta 194 (1992) 197-213]. In the case of diastereomers which crystallize with water molecules, the departure of both hygroscopic and crystal water occurs before. The corresponding kinetic and thermodynamic parameters of some processes were determined.", publisher = "Elsevier", journal = "Thermochimica Acta", title = "Mixed cobalt(III) complexes with aromatic amino acids and diamine: Part V. Thermal investigation of (1,2-diaminoethane)bis(S-tyrosinato)cobalt(III) complex diastereomers", pages = "95-90", number = "1-2", volume = "436", doi = "10.1016/j.tca.2004.07.007" }
Miodragović, Dj.U., Miodragović, Z. M., Skala, D., Malinar, M. J., Minić, D. M.,& Anđelković, K.. (2005). Mixed cobalt(III) complexes with aromatic amino acids and diamine: Part V. Thermal investigation of (1,2-diaminoethane)bis(S-tyrosinato)cobalt(III) complex diastereomers. in Thermochimica Acta Elsevier., 436(1-2), 90-95. https://doi.org/10.1016/j.tca.2004.07.007
Miodragović D, Miodragović ZM, Skala D, Malinar MJ, Minić DM, Anđelković K. Mixed cobalt(III) complexes with aromatic amino acids and diamine: Part V. Thermal investigation of (1,2-diaminoethane)bis(S-tyrosinato)cobalt(III) complex diastereomers. in Thermochimica Acta. 2005;436(1-2):90-95. doi:10.1016/j.tca.2004.07.007 .
Miodragović, Dj.U., Miodragović, Zoran M., Skala, Dejan, Malinar, Mijat J., Minić, Dragica M., Anđelković, Katarina, "Mixed cobalt(III) complexes with aromatic amino acids and diamine: Part V. Thermal investigation of (1,2-diaminoethane)bis(S-tyrosinato)cobalt(III) complex diastereomers" in Thermochimica Acta, 436, no. 1-2 (2005):90-95, https://doi.org/10.1016/j.tca.2004.07.007 . .