Acta Cryst. (2005). E61, i96-i98  [ doi:10.1107/S1600536805013103 ]

YbAg_xSi_2-x [x = 0.28 (1)] with the tetragonal -ThSi₂ structure type

S. Bobev and E. D. Bauer

Abstract: Single crystals of the title compound, ytterbium silver silicide, were synthesized from the corresponding elements using a eutectic Ag/Si mixture as a solvent. Structure determination suggested the composition of the product to be YbAg_xSi_2-x [x = 0.28 (1)], i.e. a new ternary derivative of the -ThSi₂ structure type, which crystallizes in the body-centered tetragonal space group I4₁/amd. The two atoms in the asymmetric unit lie on special positions with Wyckoff symbols 4a (Yb), and 8e (disordered Ag and Si).

Online 7 May 2005

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