Diaqua-(isonicotinamide-κN)(4-meth-oxy-benzoato-κO,O')(4-meth-oxy-benzoato-κO)cobalt(II)

Abstract

In the title complex, [Co(C(8)H(7)O(3))(2)(C(6)H(6)N(2)O)(H(2)O)(2)], the Co(II) atom is coordinated by three O atoms from two 4-meth-oxy-benzoate ligands, which act in different modes, viz. monodentate and bidentate, two water mol-ecules and one N atom of the isonicotinamide ligand in a distorted octa-hedral geometry. The monodentate-coordinated carboxyl-ate group is involved in an intra-molecular O-H⋯O hydrogen bond with the coordinated water mol-ecule. In the crystal structure, inter-molecular O-H⋯O and N-H⋯O hydrogen bonds link the mol-ecules into layers parallel to the ab plane. The crystal packing is further stabilized by weak C-H⋯O hydrogen bonds and π-π inter-actions indicated by the short distance of 3.6181 (8) Å between the centroids of the benzene and pyridine rings of neighbouring mol-ecules.

Fig. 1.

The molecular structure of (I) with the atom-numbering scheme. Displacement ellipsoids are drawn at the 50% probability level. Dashed line indicates the hydrogen-bonding.