Thermal decomposition of mixed-valent diruthenium pentakis(alkanoates) enhanced by their liquid crystalline state

The thermal decomposition of mixed-valent diruthenium pentakis(alkanoates) of general formula Ru2 (II,III)(O2C(CH2)n-2CH3)5 (for n = 3, 4, 5, 6, 8, 10, 12, 16), studied by a combination of several complementary physicochemical techniques, has been found to take place in two differentiated steps. The...

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Detalles Bibliográficos
Publicado: 1999
Materias:
Agglomeration
High temperature effects
Liquid crystals
Oxidation
Pyrolysis
Oxidative decarboxylation
Ruthenium carboxylate
Thermolysis
Ruthenium compounds
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01672738_v124_n1_p143_Rusjan
http://hdl.handle.net/20.500.12110/paper_01672738_v124_n1_p143_Rusjan
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_01672738_v124_n1_p143_Rusjan
record_format dspace
spelling paper:paper_01672738_v124_n1_p143_Rusjan2023-06-08T15:16:13Z Thermal decomposition of mixed-valent diruthenium pentakis(alkanoates) enhanced by their liquid crystalline state Agglomeration High temperature effects Liquid crystals Oxidation Pyrolysis Oxidative decarboxylation Ruthenium carboxylate Thermolysis Ruthenium compounds The thermal decomposition of mixed-valent diruthenium pentakis(alkanoates) of general formula Ru2 (II,III)(O2C(CH2)n-2CH3)5 (for n = 3, 4, 5, 6, 8, 10, 12, 16), studied by a combination of several complementary physicochemical techniques, has been found to take place in two differentiated steps. The first one gives the divalent analogues Ru2 (II,II)(O2C(CH2)n-2CH3)4 as the main product, in a one-electron reduction of the bimetallic core likely provided by oxidative decarboxylation of the axial anion. The second one involves the reduction of the binuclear core to metallic ruthenium, and the oxidation of the equatorial carboxylates. The first step is very much influenced by the aggregation state of the system, the occurrence of a liquid-crystalline phase in compounds with n>6 facilitates the thermolysis: decomposition temperatures fall from ≈300 °C for compounds with n = 3 to ≈175 °C for compounds with n = 10-16. 1999 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01672738_v124_n1_p143_Rusjan http://hdl.handle.net/20.500.12110/paper_01672738_v124_n1_p143_Rusjan
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Agglomeration
High temperature effects
Liquid crystals
Oxidation
Pyrolysis
Oxidative decarboxylation
Ruthenium carboxylate
Thermolysis
Ruthenium compounds
spellingShingle Agglomeration
High temperature effects
Liquid crystals
Oxidation
Pyrolysis
Oxidative decarboxylation
Ruthenium carboxylate
Thermolysis
Ruthenium compounds
Thermal decomposition of mixed-valent diruthenium pentakis(alkanoates) enhanced by their liquid crystalline state
topic_facet Agglomeration
High temperature effects
Liquid crystals
Oxidation
Pyrolysis
Oxidative decarboxylation
Ruthenium carboxylate
Thermolysis
Ruthenium compounds
description The thermal decomposition of mixed-valent diruthenium pentakis(alkanoates) of general formula Ru2 (II,III)(O2C(CH2)n-2CH3)5 (for n = 3, 4, 5, 6, 8, 10, 12, 16), studied by a combination of several complementary physicochemical techniques, has been found to take place in two differentiated steps. The first one gives the divalent analogues Ru2 (II,II)(O2C(CH2)n-2CH3)4 as the main product, in a one-electron reduction of the bimetallic core likely provided by oxidative decarboxylation of the axial anion. The second one involves the reduction of the binuclear core to metallic ruthenium, and the oxidation of the equatorial carboxylates. The first step is very much influenced by the aggregation state of the system, the occurrence of a liquid-crystalline phase in compounds with n>6 facilitates the thermolysis: decomposition temperatures fall from ≈300 °C for compounds with n = 3 to ≈175 °C for compounds with n = 10-16.
title Thermal decomposition of mixed-valent diruthenium pentakis(alkanoates) enhanced by their liquid crystalline state
title_short Thermal decomposition of mixed-valent diruthenium pentakis(alkanoates) enhanced by their liquid crystalline state
title_full Thermal decomposition of mixed-valent diruthenium pentakis(alkanoates) enhanced by their liquid crystalline state
title_fullStr Thermal decomposition of mixed-valent diruthenium pentakis(alkanoates) enhanced by their liquid crystalline state
title_full_unstemmed Thermal decomposition of mixed-valent diruthenium pentakis(alkanoates) enhanced by their liquid crystalline state
title_sort thermal decomposition of mixed-valent diruthenium pentakis(alkanoates) enhanced by their liquid crystalline state
publishDate 1999
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01672738_v124_n1_p143_Rusjan
http://hdl.handle.net/20.500.12110/paper_01672738_v124_n1_p143_Rusjan
_version_ 1768542215981760512

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