Acta Cryst. (2009). E65, m509  [ doi:10.1107/S1600536809012604 ]

catena-Poly[[diaquazinc(II)]--trans-4,4'-diazenediyldibenzoato-⁴O,O':O'',O''']

B. Liu and Q. Xu

Abstract: The title compound, [Zn(C₁₄H₈N₂O₄)(H₂O)₂]_n, consists of zigzag chains of Zn atoms bridged by azobenzene-4,4'-dicarboxylate ligands. The Zn^II atom, lying on a twofold rotation axis, is coordinated by four O atoms from the carboxylate groups and two water molecules, giving rise to a considerably distorted octahedral coordination envionment. The ligand lies on an inversion center. In the crystal structure, - interactions between the ligands [interplanar distance = 3.527 (3) Å] assemble the chains into a sheet-like structure. O-HO hydrogen bonds between the coordinated water molecules and carboxylate O atoms connect the sheets into a three-dimensional network.

Online 10 April 2009

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