Poly[[tetraaqua(μ6-2,2′-diiodobiphenyl-4,4′,5,5′-tetracarboxylato)dizinc(II)] dihydrate]

Abstract

In the title compound, {[Zn2(C16H4I2O8)(H2O)4]·2H2O}n, two crystallographically independent ZnII atoms are each located on a twofold rotation axis. Both ZnII atoms are in distorted octahedral coordination geometries: one is coordinated by six O atoms from four carboxylate groups, while the other is coordinated by two carboxylate groups and four water molecules. The tetracarboxylate ligand molecules connect the ZnII atoms, completing a three-dimensional metal–organic framework. O—H...O hydrogen bonds link the metal–organic framework with the uncoordinated water molecules.