Issue 19, 1994

Investigation of the structure of the columnar liquid-crystalline phase of copper(II) carboxylates. An FTIR spectroscopic study

Abstract

The FTIR spectra of a series of anhydrous copper(II) carboxylates of general formula Cu2[CH3(CH2)nCO2]4(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—O distances), in agreement with previous Cu-Kα EXAFS spectroscopic results.

Article information

Article type
Paper

J. Chem. Soc., Faraday Trans., 1994,90, 2953-2960

Investigation of the structure of the columnar liquid-crystalline phase of copper(II) carboxylates. An FTIR spectroscopic study

M. F. R. Moita, M. L. T. S. Duarte and R. Fausto, J. Chem. Soc., Faraday Trans., 1994, 90, 2953 DOI: 10.1039/FT9949002953

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