Date Published: May 01, 2011
Publisher: International Union of Crystallography
Author(s): Ahmad Nazeer Che Mat, Norbani Abdullah, Hamid Khaledi, Jia Ti Tee.
The asymmetric unit of the title compound, [Cu2(C16H31O2)4(C10H8N2)2]·2CH3OH, contains one half-molecule of the metal complex solvated by a methanol molecule. In the complex, two of the metal atoms are doubly bridged by two monodentate bridging hexadecanoate ligands around a center of inversion. The square-pyramidal geometry around each CuII ion is completed by a terminal hexadecanoate O atom and two N atoms from a 2,2′-bipyridine ligand. The alkyl chains of the carboxylate ligands are arranged in a parallel manner with an all-trans conformation. In the crystal, a π–π interaction formed by the bipyridine rings [centroid–centroid separation = 3.7723 (17) Å] and intermolecular C—H⋯O hydrogen bonds link the complex molecules into infinite chains along the b axis. An O—H⋯O interaction between the methanol solvate and one of the carboxylate O atoms is also observed.
For background to metallomesogens, see: Giroud-Godquin (1998 ▶). For the structures of similar copper(II) complexes, see: Antolini et al. (1985 ▶); Zhang et al. (2006 ▶). For a description of the geometry of complexes with a five-coordinate metal atom, see: Addison et al. (1984 ▶).