Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/18103
Title: Investigation of the Structure of the Columnar Liquid-crystalline Phase of Copper(l1) Carboxylates. An FTlR Spectroscopic Study
Authors: Moita, Maria F. Ramos 
Duarte, Maria Leonor T. S. 
Fausto, Rui 
Issue Date: 1994
Publisher: Royal Society of Chemistry
Serial title, monograph or event: J. Chem. Soc. Faraday Trans. II
Volume: 90
Abstract: The FTlR spectra of a series of anhydrous copper(it) carboxylates of general formula Cu,[CH,(CH,),CO,], (n = 4-8, 10, 12, 14 and 16) have been studied as a function of temperature. The spectra show notable changes associated with the phase transition from the crystalline to the columnar liquid-crystalline phase which indicate that the coordination of the carboxylate groups to the bimetallic centre changes from bridging bidentate to chelating bidentate. The observed change in the type of coordination is induced by the conformational disordering to the carbon chains and does not affect strongly the chemical environment around the copper atoms (in particular the Cu-Cu and Cu-0 distances), in agreement with previous Cu-Ka EXAFS spectroscopic results.
URI: http://hdl.handle.net/10316/18103
Rights: openAccess
Appears in Collections:FCTUC Química - Artigos em Revistas Internacionais

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