The pyrochlore-type molybdate Pr2Mo1.73Sc0.27O7. - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Acta Crystallographica Section E : Structure Reports Online [2001-2014] Année : 2012

The pyrochlore-type molybdate Pr2Mo1.73Sc0.27O7.

Résumé

Pr2Mo1.73Sc0.27O7, crystallizes in the cubic pyrochlore-type structure. Crystallog. data and at. coordinates are given. In the crystal, (Mo,Sc)O6 octahedra are linked together by common corners, forming a three-dimensional [(Mo,Sc)2O6] framework. The Pr atom and another O atom are located in the voids of this framework. The Mo and the Sc atom are distributed statistically over the same 16d crystallog. position, with site-occupancy factors of 0.867(3) and 0.133(3), resp. The Pr3+ ions are surrounded by six O atoms from the MoO6 octahedra and by two other O atoms, forming a ditrigonal scalenohedron. All atoms lie on special positions. The Pr and the statistically distributed (Mo,Sc) sites are in the 16c and 16d positions with .̅3m symmetry, and two O atoms are in 48f and 8a positions with 2.mm and ̅43m site symmetry, resp. [on SciFinder(R)]

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Dates et versions

hal-01070079 , version 1 (30-09-2014)

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Philippe Gall, Patrick Gougeon. The pyrochlore-type molybdate Pr2Mo1.73Sc0.27O7.. Acta Crystallographica Section E : Structure Reports Online [2001-2014], 2012, 68 (Pt 12), pp.i92. ⟨10.1107/S1600536812045138⟩. ⟨hal-01070079⟩
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