Acta Cryst. (2007). E63, i8-i10  [ doi:10.1107/S1600536806052974 ]

In_0.87K₂Mo₁₅Se₁₉: a quaternary selenide containing Mo₆ and Mo₉ clusters

D. Salloum, P. Gougeon and M. Potel

Abstract: The structure of In_0.87K₂Mo₁₅Se₁₉ (indium dipotassium pentadecamolybdate nonadecaselenide), isotypic with In_2.9Mo₁₅Se₁₉, is characterized by a mixture of Mo₆Seⁱ₈Se^a₆ and Mo₉Seⁱ₁₁Se^a₆ cluster units in the ratio 1:1. Both units are interconnected through additional Mo-Se bonds. In the title compound, K⁺ replaces the monovalent In positions as observed in In_2.9Mo₁₅Se₁₉. One Mo, one Se and the In atom are situated on mirror planes, and two other Se atoms are situated on threefold axes.

Online 15 December 2006

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