Acta Cryst. (2007). E63, i64-i66  [ doi:10.1107/S1600536807004734 ]

Cyclotriphosphate trihydraté de lanthane

F. Khlissa and M. Férid

Abstract: LaP₃O₉·3H₂O belongs to the RE^IIIP₃O₉·3H₂O (RE = rare earth) polyphosphate family that crystallizes in space group P. In these cyclotriphosphates, the cyclic P₃O₉^3- anion has a planar configuration with 3/m internal symmetry. The La³⁺ cation, located on one of the axes, is ninefold-coordinated by six polyphosphate O atoms at a distance of 2.518 (2) Å and by three water O atoms at 2.584 (3) Å.

Online 7 février 2007

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