catena-Poly[[bis­(2,2′-bipyridine-κ(2) N,N′)cadmium(II)]-μ-9,10-dioxo­anthracene-1,5-disulfonato-κ(2) O (1):O (5)]

The title complex, [Cd(C(14)H(6)O(8)S(2))(C(10)H(8)N(2))(2)](n), exhibits a chain-like polymeric structure with 9,10-dioxoanthracene-1,5-disulfonate anions bridging Cd(II) atoms in a bis-monodentate mode. The Cd(II) atom shows a distorted octa­hedral environment, with four N atoms from two chelating 2,2′-bipyridine ligands forming the equatorial plane and two sulfonate O atoms from two 9,10-dioxoanthracene-1,5-disulfonate anions occupying the apical positions. Weak C—H⋯O hydrogen-bonding contacts and π–π inter­actions [centroid–centroid distances = 3.6920 (12) and 3.7095 (12) Å] connect the complex mol­ecules into a three-dimensional supra­molecular framework.