Investigation of the Structures of the Crystalline and Columnar Phases of Linear Chain Copper(II) Alkanoates
- 1 May 1987
- journal article
- research article
- Published by Taylor & Francis in Liquid Crystals
- Vol. 2 (3) , 269-279
- https://doi.org/10.1080/02678298708086676
Abstract
Binuclear copper(11) complexes of fatty acids crystallize at room temperature in a lamellar lattice that has been characterized by X-ray diffraction. A transition to a thermotropic columnar mesophase is observed at about 110-120°C for each compound of the series n = 12 to n = 22, n being even and equal to the number of carbon atoms in the corresponding fatty acid. This columnar mesophase has been investigated by polarizing optical microscopy, differential scanning calorimetry and X-ray diffraction. Columns of polar copper carboxylate groups are surrounded by disordered aliphatic chains, and form a two-dimensional hexagonal lattice. The repeating unit in a column is a binuclear dicopper tetracarboxylate complex.Keywords
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