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

Abstract

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 1 H-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 inter­actions between the IP ligands further stabilize the supra­molecular structure [centroid–centroid distances = 3.579 (3), 3.686 (3), 3.710 (3), 3.766 (3) and 3.841 (3) Å].