Acta Cryst. (2005). E61, i15-i17  [ doi:10.1107/S1600536805001157 ]

CsYbSe₂

B. Deng and J. A. Ibers

Abstract: Caesium ytterbium diselenide, CsYbSe₂, crystallizes in space group P6₃/mmc of the hexagonal system. It is isostructural with CsPrS₂, which has the -RbScO₂ structure type. In the asymmetric unit, the site symmetries of atoms Cs, Yb and Se are m2, m and 3m, respectively. The structure comprises layers of edge-shared YbSe₆ octahedra perpendicular to [001], with Cs atoms between the layers in a trigonal-prismatic arrangement.

Online 29 January 2005

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