Bis(1H-imidazole-κN (3))bis­(2-oxidopyridinium-3-carboxyl­ato-κ(2) O (2),O (3))cobalt(II)

In the mol­ecule of the title Co(II) complex, [Co(C(6)H(4)NO(3))(2)(C(3)H(4)N(2))(2)], the Co(II) atom is located on a twofold rotation axis and chelated by two oxidopyridiniumcarboxyl­ate anions and further cis-coordinated by two imidazole ligands in a distorted octa­hedral geometry. The shorter C—O bond distance of 1.260 (2) Å suggests electron delocalization between the oxido group and the pyridinium ring. The uncoordinated carboxyl­ate O atom links with the imidazole and pyridinium rings of adjacent mol­ecules via N—H⋯O hydrogen bonding. Weak C—H⋯O hydrogen bonding is also present in the crystal structure.