Poly[(5,5′-dimethyl-2,2′-bipyridine-κ(2) N,N′)(μ(3)-5-hy­droxy­isophthalato-κ(4) O (1):O (3),O (3′):O (3′))cadmium]

In the title compound, [Cd(C(8)H(4)O(5))(C(12)H(12)N(2))], the Cd(II) cation is coordinated by three 5-hy­droxy­isophthalate anions and one 5,5′-bimethyl-2,2′-bipyridine ligand in a distorted CdO(4)N(2) octa­hedral geometry. The 5-hy­droxy­isophthalate anions bridge the Cd cations, forming a two-dimensional polymeric complex parallel to (100). In the complex, the hy­droxy group is linked to the uncoordinated carb­oxy-O atom via an O—H⋯O hydrogen bond. Weak C—H⋯O hydrogen bonds are also present in the crystal structure. One of the methyl groups is disordered over two positions in a 0.536 (11):0.464 (11) ratio.