Thermotropic mesomorphism of mixed-valent diruthenium aliphatic carboxylates with axial anion bearing two aliphatic chains

A homologous series of binuclear mixed-valent diruthenium tetracarboxylates, Ru2(O2C(CH2)n-2CH3)4DHDP (DHDP = di(hexadecyl)phosphate axial anion, n = 10, 12, 14, 16, and 18), have been synthesized and characterized, and the liquid crystalline properties of these compounds were examined. All the comp...

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Detalles Bibliográficos
Publicado: 2013
Materias:
Columnar mesophases
Coordination polymers
Di(hexadecyl)phosphate
Metallomesogens
Ruthenium carboxylates
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00958972_v66_n19_p3380_Bottazzi
http://hdl.handle.net/20.500.12110/paper_00958972_v66_n19_p3380_Bottazzi
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00958972_v66_n19_p3380_Bottazzi
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spelling paper:paper_00958972_v66_n19_p3380_Bottazzi2023-06-08T15:09:42Z Thermotropic mesomorphism of mixed-valent diruthenium aliphatic carboxylates with axial anion bearing two aliphatic chains Columnar mesophases Coordination polymers Di(hexadecyl)phosphate Metallomesogens Ruthenium carboxylates A homologous series of binuclear mixed-valent diruthenium tetracarboxylates, Ru2(O2C(CH2)n-2CH3)4DHDP (DHDP = di(hexadecyl)phosphate axial anion, n = 10, 12, 14, 16, and 18), have been synthesized and characterized, and the liquid crystalline properties of these compounds were examined. All the compounds exhibit a room-temperature crystalline lamellar phase and a high temperature (above 140°) Colh mesophase. Another, probably semi-crystalline, lamellar intermediate phase has also been found for all the studied compounds but for the n = 18 derivative. Comparison with related mesogenic homologous series where the equatorial ligands are also linear carboxylates, but the axial anions bear just one aliphatic chain (carboxylates, octylsulfonate, and dodecylsulfate), shows that the presence of a second aliphatic chain in the axial anion both lowers the transition temperatures and modifies the nature of the intermediate lamellar phase. Structural models at the molecular level are suggested for the crystalline lamellar and the Colh phases. © 2013 Taylor & Francis. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00958972_v66_n19_p3380_Bottazzi http://hdl.handle.net/20.500.12110/paper_00958972_v66_n19_p3380_Bottazzi
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Columnar mesophases
Coordination polymers
Di(hexadecyl)phosphate
Metallomesogens
Ruthenium carboxylates
spellingShingle Columnar mesophases
Coordination polymers
Di(hexadecyl)phosphate
Metallomesogens
Ruthenium carboxylates
Thermotropic mesomorphism of mixed-valent diruthenium aliphatic carboxylates with axial anion bearing two aliphatic chains
topic_facet Columnar mesophases
Coordination polymers
Di(hexadecyl)phosphate
Metallomesogens
Ruthenium carboxylates
description A homologous series of binuclear mixed-valent diruthenium tetracarboxylates, Ru2(O2C(CH2)n-2CH3)4DHDP (DHDP = di(hexadecyl)phosphate axial anion, n = 10, 12, 14, 16, and 18), have been synthesized and characterized, and the liquid crystalline properties of these compounds were examined. All the compounds exhibit a room-temperature crystalline lamellar phase and a high temperature (above 140°) Colh mesophase. Another, probably semi-crystalline, lamellar intermediate phase has also been found for all the studied compounds but for the n = 18 derivative. Comparison with related mesogenic homologous series where the equatorial ligands are also linear carboxylates, but the axial anions bear just one aliphatic chain (carboxylates, octylsulfonate, and dodecylsulfate), shows that the presence of a second aliphatic chain in the axial anion both lowers the transition temperatures and modifies the nature of the intermediate lamellar phase. Structural models at the molecular level are suggested for the crystalline lamellar and the Colh phases. © 2013 Taylor & Francis.
title Thermotropic mesomorphism of mixed-valent diruthenium aliphatic carboxylates with axial anion bearing two aliphatic chains
title_short Thermotropic mesomorphism of mixed-valent diruthenium aliphatic carboxylates with axial anion bearing two aliphatic chains
title_full Thermotropic mesomorphism of mixed-valent diruthenium aliphatic carboxylates with axial anion bearing two aliphatic chains
title_fullStr Thermotropic mesomorphism of mixed-valent diruthenium aliphatic carboxylates with axial anion bearing two aliphatic chains
title_full_unstemmed Thermotropic mesomorphism of mixed-valent diruthenium aliphatic carboxylates with axial anion bearing two aliphatic chains
title_sort thermotropic mesomorphism of mixed-valent diruthenium aliphatic carboxylates with axial anion bearing two aliphatic chains
publishDate 2013
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00958972_v66_n19_p3380_Bottazzi
http://hdl.handle.net/20.500.12110/paper_00958972_v66_n19_p3380_Bottazzi
_version_ 1768542168362778624

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