catena-Poly[[[aqua­(4,4′-dimethyl-2,2′-bipyridine-κ(2) N,N′)zinc]-μ-3-chloro­benzene-1,2-dicaboxylato-κ(2) O (2):O (3)] [[(4,4′-dimethyl-2,2′-bipyridine-κ(2) N,N′)zinc]-μ-3-chloro­benzene-1,2-dicaboxylato-κ(2) O (2):O (3)]]

In the title compound, {[Zn(C(8)H(3)ClO(4))(C(12)H(12)N(2))(H(2)O)]·[Zn(C(8)H(3)ClO(4))(C(12)H(12)N(2))]}(n), one Zn(2+) ion is five-coordin­ated by two O atoms from two different 3-chloro­benzene-1,2-dicarboxyl­ate ligands, one O atom from a water mol­ecule and two N atoms from a 4,4′-dimethyl-2,2′-bipyridine ligand, while the second Zn(2+) ion is four-coordinated by two O atoms from two different 3-chloro­benzene-1,2-dicarboxyl­ate ligands, and two N atoms from a 4,4′-bimethyl-2,2′-bipyridine ligand. The crystal structure exhibits a three-dimensional supra­molecular structure composed of alternate Zn(C(8)H(3)O(4)Cl)(C(12)H(12)N(2)) and Zn(C(8)H(3)O(4)Cl)(C(12)H(12)N(2))(H(2)O) chains, which are linked together by face-to-face π–π inter­actions [shortest centroid–centroid distances of 3.661 (4) and 3.6901 (3) Å], O—H⋯O and C—H⋯O hydrogen bonds.