Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 6 (June 2013)

inorganic compounds

Acta Cryst. (2013). E69, i38    [ doi:10.1107/S1600536813013603 ]

Na2.9KMo12S14: a novel quaternary reduced molybdenum sulfide containing Mo12 clusters with a channel structure

P. Gougeon, P. Gall and D. Salloum

Abstract: The crystal structure of tris­odium potassium dodeca­molybdenum tetra­deca­sulfide, Na2.9 (2)KMo12S14, consists of Mo12S14S6 cluster units inter­connected through inter­unit Mo-S bonds and delimiting channels in which the Na+ cations are disordered. The cluster units are centered at Wyckoff positions 2d and have point-group symmetry 3.2. The K atom lies on sites with 3.2 symmetry (Wyckoff site 2c) between two consecutive Mo12S14S6 units. One of the three independent S atoms and one Na atom lie on sites with 3.. symmetry (Wyckoff sites 4e and 4f). The other Na atom occupies a 2b position with -3.. symmetry. The crystal studied was a merohedral twin with refined components of 0.4951 (13) and 0.5049 (13).

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