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Acta Cryst. (2009). E65, i78  [ doi:10.1107/S1600536809041622 ]

Dipotassium samarium(III) molybdate(VI) phosphate(V), K2Sm(MoO4)(PO4)

D. Zhao, F. Li, W. Cheng and H. Zhang

Abstract: The title compound, K2Sm(MoO4)(PO4), has been prepared under atmospheric conditions using a high temperature solution growth (HTSG) method. The structure of K2Sm(MoO4)(PO4) is isotypic with other A2M(MoO4)(PO4) compounds, where A = Na or K, and M = trivalent rare earth cation. It can be described as being built up from two-dimensional anionic layers with composition [Sm(MoO4)(PO4)]2- that are stacked along the c axis and are interconnected by K+ cations which are in an eightfold coordination by O atoms. The SmO8, MoO4 and PO4 polyhedra exhibit 2 symmetry.

Online 17 October 2009


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