Aqua-chloridobis(diphenyl-glyoximato-κN,N')cobalt(III) dihydrate

Abstract

The asymmetric unit of the title complex, [Co(C(14)H(11)N(2)O(2))(2)Cl(H(2)O)]·2H(2)O or [Co(dpgH)(2)Cl(H(2)O)]·2H(2)O, where dpgH(-) is diphenyl glyoximate, consists of one-half of a [Co(dpgH)(2)Cl(H(2)O)] complex and one solvent water mol-ecule. The complex is completed through inversion symmetry, with the Co(III) atom situated at the centre of symmetry. The coordination geometry around the Co(III) atom is distorted octa-hedral with the four N atoms of the two dpgH(-) ligands forming an approximate square plane with N-Co-N bite angles of 81.13 (14) and 98.87 (14)°. The Cl(-) ligand and the water mol-ecule are disordered in a 1:1 ratio and are in the axial positions, almost perpendicular to the plane of the glyoximate ligands [O-Co-Cl = 175.3 (10)°]. The two glyoximate ligands are linked by strong intra-molecular O-H⋯O hydrogen bonds. In addition, O-H⋯O inter-actions involving the solvent water mol-ecules and O-H⋯N hydrogen-bonding inter-actions are also observed. The solvent water mol-ecule is disordered over five positions with different occupancies.

Fig. 1.

ORTEP representation of the complex drawn at the 30% probability level with the atom labelling scheme. [Symmetry Code: (i) 1-x, -y, -z].

Fig. 2.

Packing of the complex in the unit cell with the disordered water occupying the intermolecular voids. The hydrogen atoms bound to aromatic carbons have been omitted for clarity.