V1.42In1.83Mo15Se19

Patrick Gougeon (1) , Philippe Gall (1) , Salloum Diala (1) , Potel Michel (1)

1 ISCR - Institut des Sciences Chimiques de Rennes

The structure of the title compound, vanadium indium pentadecamolybdenum nonadecaselenide, V1.42In1.83Mo15Se19, is isotypic with In2.9Mo15Se19 [Gruttner et al. (1979). Acta Cryst. B35, 285-292]. It is characterized by two cluster units Mo6Sei8Sea6 and Mo9Sei11Sea6 (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 \overline{3} and \overline{6}, respectively. The clusters are interconnected through additional Mo-Se bonds. In the title compound, the V3+ cations replace the trivalent indium atoms present in In2.9Mo15Se19, and a deficiency is observed on the monovalent indium site. One Mo, one Se and the V atom are situated on mirror planes, and two other Se atoms and the In atom are situated on threefold rotation axes.

Domaines: Chimie inorganique

Patrick Gougeon, Philippe Gall, Salloum Diala, Potel Michel. V1.42In1.83Mo15Se19. Acta Crystallographica Section E : Structure Reports Online [2001-2014], 2010, 66 (10), pp.i73. ⟨10.1107/S1600536810036834⟩. ⟨hal-00538234⟩