Acta Cryst. (2012). E68, m20  [ doi:10.1107/S1600536811051397 ]

Chloridobis(dimethylglyoximato-²N,N')(ethyl pyridine-3-carboxylate-N)cobalt(III)

N. Wang, X. Sun, D. Wan, J. Chen and B. Li

Abstract: In the title compound, [Co(C₄H₇N₂O₂)₂Cl(C₈H₉NO₂)], which was prepared as a model complex of vitamin B₁₂, the Co^III atom, which is linked to four N atoms of the pseudo-macrocyclic (dmgH)₂ ligand (dmgH is dimethylglyoximate) in the equatorial plane and one Cl^- anion and one N atom of ethyl nicotinate in apical positions, displays an approximately octahedral coordination. The Co atom is 0.0187 (8) Å out of the mean plane of the four equatorial N atoms. The structure has an OHO bridge, which is very common in cobaloxime derivatives, with OH distances of 1.24 (2) and 1.25 (2) Å.

Online 7 December 2011

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