Acta Cryst. (2005). E61, m451-m453  [ doi:10.1107/S1600536805003211 ]

catena-Poly[[diaquacadmium(II)]--benzene-1,4-dioxyacetato-⁴O,O':O'',O''']

S. Gao, J.-W. Liu, L.-H. Huo and H. Zhao

Abstract: In the title coordination polymer {systematic name: catena-poly[[diaquacadmium(II)]--p-phenylenebis(oxyacetato)-⁴O,O':O'',O''']), [Cd(C₁₀H₈O₆)(H₂O)₂]_n, the Cd^II atom displays a trigonal prismatic coordination geometry, involving four carboxyl O atoms from two different benzene-1,4-dioxyacetate ligands and two water molecules. The Cd^II atom and the benzene-1,4-dioxyacetate ligand lie on special positions with twofold rotation and inversion symmetry, respectively. Adjacent Cd^II ions are linked by carboxylate groups with the tetradentate coordination mode, forming a one-dimensional chain structure with an adjacent CdCd distance of 15.263  (5)  Å. These chains are further linked by O-HO hydrogen bonds, forming a supramolecular network.

Online 5 February 2005

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