Dichlorido{N′-[1-(2-pyridin-2-yl)ethylidene]acetohydrazide-κ2N′,O}copper(II)

In the title compound, [CuCl2(C9H11N3O)], the Cu-II atom is in a distorted square-pyramidal CuCl2N2O coordination geometry. The tridentate acetohydrazide ligand chelates in a meridional fashion. The chloride ligand in the axial position forms a long Cu-Cl distance of 2.4892 (9) angstrom. In contrast, the Cu-Cl distance from the equatorial chloride ligand is much shorter [2.2110 (7) angstrom]. Intermolecular N-H center dot center dot center dot Cl and C-H center dot center dot center dot Cl hydrogen bonds link the complexes into a three-dimensional network.