Acta Cryst. (2005). E61, i58-i60  [ doi:10.1107/S1600536805008421 ]

Caesium thorium silicate, Cs₂ThSi₆O₁₅

J. D. Woodward, P. M. Almond and T. E. Albrecht-Schmitt

Abstract: A caesium thorium(IV) silicate has been synthesized serendipitously under high-temperature solid-state conditions by the reaction of Th^IV with a fused silica/alumina reaction crucible. The compound crystallizes in the orthorhombic space group Pca2₁. The crystal structure consists of ThO₆ distorted octahedra corner-shared with SiO₄ tetrahedra to form an anionic three-dimensional framework possessing extended channels containing Cs⁺ cations. Cs₂ThSi₆O₁₅ is a phyllosilicate with the same sheet structure as -K₃NdSi₆O₁₅.

Online 25 March 2005

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