title: Dichloro[(1E,1'E)-1,1'-(pyridine-2,6-diyl)diethanone bis(O-methyloxime)-kappa(3)N(1),N(2),N(6)]copper(II).
abstract: In the title compound, [CuCl(2)(C(11)H(15)N(3)O(2))], the Cu(II) ion is five-coordinated in a strongly distorted trigonal-bipyramidal arrangement, with the two methyloxime N atoms located in the apical positions, and the pyridine N and the Cl atoms located in the basal plane. The two axial Cu-N distances are almost equal (mean 2.098 A) and are substantially longer than the equatorial Cu-N bond [1.9757 (15) A]. It is observed that the N(oxime)-M-N(pyridine) bond angle for five-membered chelate rings of 2,6-diacetylpyridine dioxime complexes is inversely related to the magnitude of the M-N(pyridine) bond. The structure is stabilized by intra- and intermolecular C-H...Cl hydrogen bonds which involve the methyl H atoms, except for one of the two acetylmethyl groups.
authors.affiliation: Department of Physics, Arts and Sciences Faculty, Ondokuz Mayis University, 55139 Samsun, Turkey. namiko@omu.edu.tr
authors.forename: Namik
authors.initials: N
authors.lastname: Ozdemir
authors.forename: Muharrem
authors.initials: M
authors.lastname: Dinçer
authors.forename: Osman
authors.initials: O
authors.lastname: Dayan
authors.forename: Bekir
authors.initials: B
authors.lastname: Cetinkaya