Acta Cryst. (2004). E60, m140-m141  [ doi:10.1107/S1600536803029234 ]

catena-Poly[[diaquazinc(II)--benzene-1,3-dioxyacetate] dihydrate]

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

Abstract: The title coordination polymer, {[Zn(C₁₀H₈O₆)(H₂O)₂]·2H₂O}_n, was synthesized and characterized by X-ray crystallography. The crystal structure reveals the asymmetric unit to consist of the zinc(II) complex [Zn(1,3-BDOA)(H₂O)₂] and two uncoordinated water molecules. The zinc(II) ion displays a four-coordinate distorted tetrahedral geometry, formed by two carboxylate O atoms of two benzene-1,3-dioxyacetate ligands and two coordinated water molecules. The zinc(II) ions are bridged by carboxylate groups, forming a one-dimensional chain structure. The Zn-O bond distances lie in the range 1.941  (4)-1.981  (4)  Å and the ZnZn separation within the polymer is 14.627  (3)  Å.

Online 10 January 2004

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