Acta Cryst. (2005). E61, m986-m988  [ doi:10.1107/S1600536805012729 ]

catena-Poly[[aquazinc(II)]--2-carboxylatophenoxyacetato]

Y. Yang, F.-Y. Meng, M.-H. Zeng and S. W. Ng

Abstract: The -OCH₂CO₂ arm of the ligand in the title compound, [Zn(C₉H₆O₅)(H₂O)]_n, uses the single-bond carboxyl O atom, as well as the ether O atom, to chelate to the Zn atom; the other -CO₂ arm bridges adjacent Zn atoms into a helical chain that propagates by means of a 2₁ screw axis. The -OCH₂CO₂ arm features distinct single- and double-bond C-O distances; in the other -CO₂ arm, the C-O distances are interpreted in terms of a delocalized carboxyl group. The coordination about zinc is completed by a water molecule, resulting a distorted ZnO₅ square-pyramidal arrangement in which the apical position is occupied by water.

Online 27 April 2005

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