Poly[di-μ₃-hy­droxy[μ₄-5-(4-carb­oxy­phen­yl)pyridine-2-carboxyl­ato-κ⁵N,O²:O^2′:O⁴:O^4′]dicadmium]

The asymmetric unit of the title polymeric complex, [Cd₂(C₁₃H₇NO₄)(OH)₂]_n, consists of two independent Cd^II atoms, one 5-(4-carb­oxy­phen­yl)pyridine-2-carboxyl­ate ligand and two hy­droxy groups. One Cd^II atom is six-coordinated by two O atoms from two ligand mol­ecules and by four μ₃-OH groups in a distorted trigonal–prismatic geometry. The other is five-coordinated by one N and two O atoms from two ligands and by two μ₃-OH groups, forming a distorted square-pyramidal geometry. The two independent Cd^II atoms are connected by the ligand mol­ecules and the OH groups into a three-dimensional framework. O—H...O hydrogen bonds between the OH groups and the carboxyl­ate O atoms are observed.