title: Chloridobis(dimethyl-glyoximato-κN,N')(ethyl pyridine-4-carboxyl-ate-κN)cobalt(III) chloro-form monosolvate.
abstract: The title compound, [Co(C(4)H(7)N(2)O(2))(2)Cl(C(8)H(9)NO(2))]·CHCl(3), was synthesized as a model complex of vitamin B(12). The Co(III) cation displays an approximately octa-hedral coordination environment, being displaced by 0.0240 (15) Å from the mean plane of the four N atoms of the equatorial plane. The O-H distances in the dimethyl-glyoximate hy-droxy groups are 0.89 (6) and 1.14 (6) Å; such long O-H bonds are very common in cobaloxime derivatives. Weak classical O-H⋯N and non-classical C-H⋯Cl hydrogen-bonding interactions further consolidate the crystal packing.
authors.affiliation: Henan University of Technology, School of Chemistry and Chemical Engineering, Zhengzhou 450001,  People's Republic of China.
authors.forename: Ning
authors.initials: N
authors.lastname: Wang
authors.forename: Xuzhuo
authors.initials: X
authors.lastname: Sun
authors.forename: Dongjin
authors.initials: D
authors.lastname: Wan
authors.forename: Jing
authors.initials: J
authors.lastname: Chen
authors.forename: Bo
authors.initials: B
authors.lastname: Li