Poly[[tris(1,10-phenanthroline)tris(μ3-succinato)tricadmium(II)] tetrahydrate]

The title complex, {[Cd-3(C4H4O4)(3)(C12H8N2)(3)] center dot 4H(2)O}(n), has been isolated from the hydrothermal reaction of cadmium acetate with 1,10-phenanthroline (phen) and succinic acid. The structure features two-dimensional networks formed by succinate ligands bridging Cd atoms in two different coordination modes. A twofold rotation axis passes through one Cd atom. In one coordination mode, the Cd atoms are in a distorted octahedral CdO4N2 arrangement and the coordination atoms come from one phen ligand and two succinate ligands. In the other coordination mode, the Cd atoms are in the decahedral CdO5N2 geometries and the coordination atoms come from one phen ligand and three succinate ligands.