Acta Cryst. (2006). E62, i253-i255  [ doi:10.1107/S1600536806047003 ]

Ca₁₀K(PO₄)₇ from single-crystal data

M. H. Sandström and D. Boström

Abstract: Crystals of decacalcium potassium heptakis(orthophosphate), Ca₁₀K(PO₄)₇, were obtained from a melt. The structure of Ca₁₀K(PO₄)₇ is isostructural with -Ca₃(PO₄)₂ and has been determined previously [Morozov, Presnyakov, Belik, Khasanov & Lazoryak (2000). Crystallogr. Rep. 45, 19-26]. The present investigation confirms the previous study, but with higher precision and with all displacement parameters refined anisotropically. The structure contains four Ca, one K, three P and ten unique O atoms, of which the K, one Ca, one P and one O atom are located on threefold rotation axes.

Online 17 November 2006

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