title: Chlorido[1-(pyridin-2-yl)ethanone oximato-κN,N'][1-(2-pyrid-yl)ethanone oxime-κN,N']copper(II) trihydrate.
abstract: In the title compound, [Cu(C(7)H(7)N(2)O)Cl(C(7)H(8)N(2)O)]·3H(2)O, the metal ion is five-coordinated by the N atoms from the 1-(pyridin-2-yl)ethanone oximate and 1-(pyridin-2-yl)ethanone oxime ligands and by the chloride anion in a distorted square-pyramidal geometry. The distortion parameter is 0.192. The two organic ligands are linked by an intra-molecular O-H⋯O hydrogen bond. In the crystal, mol-ecules are linked by O-H⋯O and O-H⋯Cl hydrogen bonds. The title compound is the hydrated form of a previously reported structure [Wu & Wu (2008 ▶). Acta Cryst. E64, m828]. There are only slight variations in the mol-ecular geometries of the two compounds.
authors.affiliation: School of Chemistry and Chemical Engineering, Liaocheng University, Shandong 252059,  People's Republic of China.
authors.forename: Xiumin
authors.initials: X
authors.lastname: Qiu
authors.forename: Leilei
authors.initials: L
authors.lastname: Li
authors.forename: Dacheng
authors.initials: D
authors.lastname: Li