Thermal stability of mixed-valent binuclear osmium (II, III) carboxylates

Thermal stabilities studies of mixed-valent binuclear osmium carboxylates, Os2II,III (O2CR)4X, (where RCO2- are the equatorial carboxylates (R = alkyl group) and X- is the axial ligand (carboxylate or halide (Cl-, I-or Br-)) anion, have been carried out. The following series were analyzed: Os 2(O2C...

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Detalles Bibliográficos
Publicado: 2010
Materias:
Binuclear osmium
Mixed-valent
Thermal decomposition
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15533174_v40_n1_p32_Fabiyi
http://hdl.handle.net/20.500.12110/paper_15533174_v40_n1_p32_Fabiyi
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_15533174_v40_n1_p32_Fabiyi
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spelling paper:paper_15533174_v40_n1_p32_Fabiyi2025-07-30T18:58:44Z Thermal stability of mixed-valent binuclear osmium (II, III) carboxylates Binuclear osmium Mixed-valent Thermal decomposition Thermal stabilities studies of mixed-valent binuclear osmium carboxylates, Os2II,III (O2CR)4X, (where RCO2- are the equatorial carboxylates (R = alkyl group) and X- is the axial ligand (carboxylate or halide (Cl-, I-or Br-)) anion, have been carried out. The following series were analyzed: Os 2(O2C (CH2)n - 2CH2) 2; Os2(O2C(CH2)n - 2CH2)2Cl; (and also their analogs where X = Br or I); Os2 (benzoate)2Cl; Os2 (x, y, z - BmOCn)4Cl, (where x, y, z - BmOCn are substituted benzoates, m = number of alkoxy chains on the aromatic rings in the positions x, y, z and n = number of carbon atoms in each linear alkoxy chains), and also, for comparative purposes, their divalent analogs, Os2(4-B1OCn)4Cl; Os 2(3, 4- B2OCn)4 Cl and Os2(4-B1OCn) 4Cl. In all cases the number of n were varied. The nature of the axial ligands was found to dictate the two decomposition pathways, while the equatorial carboxylates play an insignificant role. Their thermal decompositions were found to involve the reduction of the bimetallic center to Os. The pentacarboxylates (X-= CH3(CH2)n - 2CO2-) have a two-step mechanism with Os 2II,II(O2C (CH2)n - 2CH 2)2 as their intermediate products, while the halocomplexes (X-= halide) proceed in only one complex step. The gases given off during the decomposition processes were analyzed. Copyright © Taylor & Francis Group, LLC. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15533174_v40_n1_p32_Fabiyi http://hdl.handle.net/20.500.12110/paper_15533174_v40_n1_p32_Fabiyi
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Binuclear osmium
Mixed-valent
Thermal decomposition
spellingShingle Binuclear osmium
Mixed-valent
Thermal decomposition
Thermal stability of mixed-valent binuclear osmium (II, III) carboxylates
topic_facet Binuclear osmium
Mixed-valent
Thermal decomposition
description Thermal stabilities studies of mixed-valent binuclear osmium carboxylates, Os2II,III (O2CR)4X, (where RCO2- are the equatorial carboxylates (R = alkyl group) and X- is the axial ligand (carboxylate or halide (Cl-, I-or Br-)) anion, have been carried out. The following series were analyzed: Os 2(O2C (CH2)n - 2CH2) 2; Os2(O2C(CH2)n - 2CH2)2Cl; (and also their analogs where X = Br or I); Os2 (benzoate)2Cl; Os2 (x, y, z - BmOCn)4Cl, (where x, y, z - BmOCn are substituted benzoates, m = number of alkoxy chains on the aromatic rings in the positions x, y, z and n = number of carbon atoms in each linear alkoxy chains), and also, for comparative purposes, their divalent analogs, Os2(4-B1OCn)4Cl; Os 2(3, 4- B2OCn)4 Cl and Os2(4-B1OCn) 4Cl. In all cases the number of n were varied. The nature of the axial ligands was found to dictate the two decomposition pathways, while the equatorial carboxylates play an insignificant role. Their thermal decompositions were found to involve the reduction of the bimetallic center to Os. The pentacarboxylates (X-= CH3(CH2)n - 2CO2-) have a two-step mechanism with Os 2II,II(O2C (CH2)n - 2CH 2)2 as their intermediate products, while the halocomplexes (X-= halide) proceed in only one complex step. The gases given off during the decomposition processes were analyzed. Copyright © Taylor & Francis Group, LLC.
title Thermal stability of mixed-valent binuclear osmium (II, III) carboxylates
title_short Thermal stability of mixed-valent binuclear osmium (II, III) carboxylates
title_full Thermal stability of mixed-valent binuclear osmium (II, III) carboxylates
title_fullStr Thermal stability of mixed-valent binuclear osmium (II, III) carboxylates
title_full_unstemmed Thermal stability of mixed-valent binuclear osmium (II, III) carboxylates
title_sort thermal stability of mixed-valent binuclear osmium (ii, iii) carboxylates
publishDate 2010
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15533174_v40_n1_p32_Fabiyi
http://hdl.handle.net/20.500.12110/paper_15533174_v40_n1_p32_Fabiyi
_version_ 1840324838765363200

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