Date Published: June 01, 2011
Publisher: International Union of Crystallography
Author(s): Hong Qiang, Fan Zhang.
In the title complex, [CuCl2(C17H11N3O2)2], the CuII ion is located on an inversion center. It exhibits a distorted octahedral coordination geometry defined by two chloride anions at trans sites and four 3-pyridyl N atoms at equatorial sites from two (6-nicotinoyl-2-pyridyl)(3-pyridyl)methanone ligands. The (6-nicotinoyl-2-pyridyl)(3-pyridyl)methanone ligand can be viewed as having two pendant 3-pyridyl rings attached to a central pyridyl skeleton via separate carbonyl bridges, acting in a κ2N,N′-chelating mode with its 3-pyridyl N atoms bound to the CuII ion. The pendant 3-pyridyl rings make a dihedral angle of 80.76 (5)°. In the crystal, molecules are linked through intermolecular C—H⋯π and C—H⋯O interactions, forming a three-dimentional framework.
For transition metal complexes with di-pyrid-2-yl ketone, see: Papaefstathiou & Perlepes (2002 ▶); Efthymiou et al. (2006 ▶). For the crystal structure of an analogous CuII complex, see: Wan et al. (2008 ▶). For C—H⋯π interactions, see: Umezawa et al. (1998 ▶).