Date Published: April 01, 2011
Publisher: International Union of Crystallography
Author(s): Md. Yeamin Reza, Laila Arjuman Banu, M. Saidul Islam, Seik Weng Ng, Edward R. T. Tiekink.
The Cu(II) atom in the title complex, [Cu(C14H11O3)Cl(C10H8N2)], exists within a ClN2O2 donor set defined by a chloride ion, an asymmetrically chelating carboxylate ligand, and a symmetrically chelating 2,2′-bipyridine molecule. The coordination geometry is square pyramidal with the axial site occupied by the O atom forming the weaker Cu—O interaction. The hydroxy group forms an intramolecular hydrogen bond with the axial O atom, as well as an intermolecular O—H⋯Cl hydrogen bond. The latter leads to the formation of  supramolecular chains in the crystal, with the Cu(II) atoms lying in a line.
For recent structural studies on metal complexes of anions derived from benzilic acid, see: Yang et al. (2010 ▶); Reza et al. (2010 ▶). For additional structural analysis, see: Addison et al. (1984 ▶); Spek (2009 ▶).