Diaqua(isonicotinamide-κN1)(4-methoxybenzoato-κ2O,O′)(4-methoxybenzoato-κO)cobalt(II)

Abstract

In the title complex, [Co(C8H7O3)2(C6H6N2O)(H2O)2], the CoII atom is coordinated by three O atoms from two 4-methoxybenzoate ligands, which act in different modes, viz. monodentate and bidentate, two water molecules and one N atom of the isonicotinamide ligand in a distorted octahedral geometry. The monodentate-coordinated carboxylate group is involved in an intramolecular O—H...O hydrogen bond with the coordinated water molecule. In the crystal structure, intermolecular 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 interactions indicated by the short distance of 3.6181 (8) Å between the centroids of the benzene and pyridine rings of neighbouring molecules.