Acta Cryst. (2006). E62, m2424-m2426 [ doi:10.1107/S1600536806034714 ]
Abstract: The Ca and Zr atoms in the title compound, poly[octaaquatetra--oxalato-calciumdipotassiumzirconate(IV)], [CaK2Zr(C2O4)4(H2O)8], are chelated by bridging oxalate groups to form a three-dimensional network; the two independent water-coordinated K atoms occupy the space within the network and also interact with the oxalate O atoms to result in eight-coordination for the K atoms. The title compound is isostructural with [CdK2Zr(C2O4)4(H2O)8] [Jeanneau, Audebrand & Louer (2002). J. Mater. Chem. 12, 2383-2389]. All the metal ions occupy special positions with site symmetry.
Online 6 September 2006
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