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.