Crystal structure of Sc1.91In1.39Mo15Se19, containing Mo6 and Mo9 clusters - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Acta crystallographica Section E : Crystallographic communications [2015-...] Année : 2015

Crystal structure of Sc1.91In1.39Mo15Se19, containing Mo6 and Mo9 clusters

Résumé

The structure of scandium indium penta-deca-molybdenum nona-deca-selenide, Sc1.91In1.39Mo15Se19, is isotypic with In2.9Mo15Se19 [Grüttner et al. (1979 ▸). Acta Cryst. B35, 285-292]. It is characterized by two cluster units Mo6Se (i) 8Se (a) 6 and Mo9Se (i) 11Se (a) 6 (where i represents inner and a apical atoms) that are present in a 1:1 ratio. The cluster units are centered at Wyckoff positions 2b and 2c and have point-group symmetry -3 and -6, respectively. The clusters are inter-connected through additional Mo-Se bonds. Sc-Se and In-Se bonds complete the structural set-up. In the title compound, the Sc(3+) cations replace the trivalent indium atoms present in In2.9Mo15Se19, and a deficiency is observed at the monovalent indium site. One Mo, one Se and the Sc atom are situated on mirror planes, whereas two other Se atoms and the In atom are situated on threefold rotation axes.

Domaines

Chimie

Dates et versions

hal-01188180 , version 1 (28-08-2015)

Identifiants

Citer

Patrick Gougeon, Philippe Gall, Diala Salloum. Crystal structure of Sc1.91In1.39Mo15Se19, containing Mo6 and Mo9 clusters. Acta crystallographica Section E : Crystallographic communications [2015-..], 2015, 71 (7), pp.760--762. ⟨10.1107/S2056989015010634⟩. ⟨hal-01188180⟩
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