Tris[2,5-bis(1H-benzimidazol-2-yl)pyridinato-κ2 N 1,N 2]cobalt(III) dihydrate

Abstract

In the title compound, [Co(C19H12N5)3]·2H2O, three mono-deprotonated 2,5-bis(benzimidazolyl)pyridine heterocycles chelate to cobalt(III) through the N atom of one benzimidazolyl arm of the heterocycle as well as through the pyridyl N atom to form a fairly regular six-coordinate, octahedral geometry geometry for cobalt. A network of N—H...N, N—H...O and O—H...N hydrogen bonds involving the non-coordinated water molecules results in a layered structure.