catena-Poly[[tetraaquazinc(II)]-μ-2,2′-dihydroxy-5,5′-diazenediyldibenzoato]

Abstract

In the title compound, [Zn(C14H8N2O6)(H2O)4]n, the 2,2′-dihydroxy-5,5′-diazenediyldibenzoate ligand acts as a carboxylate bridge, leading to the formation of a polymeric chain running along the [1overline{1}0] direction. The ZnII atom is hexa-coordinated in a distorted octahedral geometry by six O atoms [Zn—O = 2.055 (4)–2.132 (3) Å] from two carboxylate ligands and four water molecules. The crystal packing is stabilized by intermolecular O—H...O, O—H...N and C—H...O hydrogen bonds, and two π–π interactions. The centroid–centroid distances are 3.803 (16) and 3.804 (17) Å.