Acta Cryst. (2006). E62, m267-m268  [ doi:10.1107/S1600536806000493 ]

catena-Poly[[[diaquacalcium(II)]-di--3-carboxyphenoxyacetato] dihydrate]

S. Gao and S. W. Ng

Abstract: The Ca atom in the title compound, {[Ca(HO₂CC₆H₄OCH₂CO₂)₂(H₂O)₂]·2H₂O}_n, is eight-coordinate. The HO₂CC₆H₄OCH₂CO₂^- monoanion binds in a chelating mode; it also functions as a bridge, linking adjacent Ca atoms into a zigzag chain. Hydrogen bonds link the chains into a three-dimensional network. The Ca atom lies on a special position of site symmetry 2.

Online 11 January 2006

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