Chloridobis(dimethylglyoximato-κ²N,N′)(ethyl pyridine-4-carboxylate-κN)cobalt(III) chloroform monosolvate

Abstract

The title compound, [Co(C4H7N2O2)2Cl(C8H9NO2)]·CHCl3, was synthesized as a model complex of vitamin B12. The CoIII cation displays an approximately octa­hedral 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 dimethyl­glyoximate hy­droxy 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.

Tetrakis(ethyl pyridine-4-carboxylate-κN)bis(thiocyanato-κN)cobalt(II)

“…For the structures of related complexes containing ethyl pyridine-4-carboxylate ligands, see : Wang et al (2012). For other related structures, see: Manna et al (2008); Diehr et al (2011).…”