[Open access]

Acta Cryst. (2013). E69, i7
[ doi:10.1107/S1600536813000731 ]

The defect scheelite-type lanthanum(III) ortho-oxidomolybdate(VI) La0.667[MoO4]

T. Schustereit, T. Schleid and I. Hartenbach

Abstract: In scheelite-type La0.667[MoO4], one crystallographically unique position with site symmetry -4.. and an occupancy of 2/3 is found for the La3+ cation. The cation is surrounded by eight O atoms in the shape of a trigonal dodecahedron. The structure also contains one [MoO4]2- anion (site symmetry -4..), which is surrounded by eight vertex-attached La3+ cations. The polyhedra around the La3+ cations are interconnected via common edges, building up a three-dimensional network, in the tetrahedral voids of which the Mo6+ cations reside.


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