Acta Cryst. (2006). E62, i10-i12  [ doi:10.1107/S1600536805040882 ]

SmAl_2.64(4)Ge_0.36(4), with the hexagonal Ni₃Sn structure type

S.-Q. Xia, D. Lins and S. Bobev

Abstract: Single crystals of the title compound, samarium aluminium germanium, were synthesized from the corresponding elements using molten Al metal as a solvent. The structure is isotypic with GdAl_2.90Ge_0.10, crystallizing in the hexagonal Ni₃Sn structure type (space group P6₃/mmc), with two atoms in the asymmetric unit, namely Sm on Wyckoff site 2c and a statistical mixture of Al and Ge on Wyckoff site 6h. Structure refinement from single-crystal X-ray diffraction data result in the stoichiometry SmAl_2.64 (4)Ge_0.36 (4).

Online 14 December 2005

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