Tetra-aqua-bis[1,1'-(4-methoxy-naph-thalene-1,3-diyldimethyl-ene)pyridinium-3-carboxyl-ate-κO]cobalt(II) bis-(perchlorate) hexa-hydrate.

In the molecule of the centrosymmetric title compound, [Co(C(25)H(20)N(2)O(5))(2)(H(2)O)(4)](ClO(4))(2)·6H(2)O, the Co atom is octa-hedrally coordinated by four water mol-ecules lying in the equatorial plane and two monodentate carboxyl-ate groups from two dicarboxylate ligands. The crystal structure involves O-H⋯O and O-H⋯Cl hydrogen bonds..