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Acta Cryst. (2005). E61, i155-i157  [ doi:10.1107/S1600536805021343 ]

Lanthanum dimagnesium

B. Belgacem, S. Yahyaoui, P. Y. Demchenko, O. I. Bodak, M. Dusek and R. Ben Hassen

Abstract: Single crystals of the LaMg2 cubic Laves phase were synthesized by arc melting. The binary LaMg2 compound has been shown to adopt the MgCu2-type structure. The coordination sphere of the rare earth metal, adopting a site symmetry of \\overline{1}, consists only of 12 Mg atoms. The site symmetry of the alkaline earth metal is \\overline{3}m, giving rise to superimposed distorted MgLa6 and MgMg6 octahedra.

Online 9 July 2005

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