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