Diaqua-(isonicotinamide-κN¹)(4-methoxy-benzoato- κ² O,O′)(4-methoxy-benzoato-κO)cobalt(II)

In the title complex, [Co(C₈H₇O₃) ₂(C₆H₆N₂O)(H₂O) ₂], the Co^II atom is coordinated by three O atoms from two 4-methoxy-benzoate ligands, which act in different modes, viz. monodentate and bidentate, two water molecules and one N atom of the isonicotinamide ligand in a distorted octa-hedral geometry. The monodentate-coordinated carboxylate group is involved in an intra-molecular O-H⋯O hydrogen bond with the coordinated water molecule. In the crystal structure, inter-molecular O-H⋯O and N-H⋯O hydrogen bonds link the molecules 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 molecules.