Chloridobis(dimethylglyoximato-κ²N,N′)(ethyl pyridine-3-carboxylate-κN)cobalt(III)

Abstract

In the title compound, [Co(C4H7N2O2)2Cl(C8H9NO2)], which was prepared as a model complex of vitamin B12, the CoIII 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 O⋯H⋯O bridge, which is very common in cobaloxime derivatives, with O⋯H distances of 1.24 (2) and 1.25 (2) Å.