Bis[[aqua(1H-imidazo[4,5-f][1,10]-phenanthroline-kappa N-2(6),N-7)cadmium]-bis(mu-pyridine-2,3-dicarboxylato)-kappa N-3,O-2:O-3;kappa O-3(3):N,O-2]

In the title compound, [Cd 2(C 7H 3NO 4) 2(C 13H 8N 4) 2(H 2O) 2], the Cd II ion is six-coordinated by two N atoms from a 1H-imidazo[4,5-f][1,10]phenanthroline (IP) ligand, one N atom and one O atom from a pyridine-2,3-dicarboxylate (pdc) ligand, one O atom from another pdc ligand and one water molecule in a distorted octahedral geometry. Two Cd II ions are bridged by a pair of pdc ligands, forming a centrosymmetric dinuclear structure. Neighboring dinuclear units are linked by the coordinated water molecules through O - H⋯N and O - H⋯O hydrogen bonds, forming a layer parallel to (011). The layers are further linked into a three-dimensional network through N - H⋯O hydrogen bonds. π-π inter-actions between the IP ligands further stabilize the supra-molecular structure [centroid-centroid distances = 3.579 (3), 3.686 (3), 3.710 (3), 3.766 (3) and 3.841 (3) Å].