Acta Crystallographica Section E

Structure Reports Online

Volume 70, Part 1 (January 2014)


inorganic compounds



Acta Cryst. (2014). E70, i4    [ doi:10.1107/S1600536813033680 ]

Nickel(II) uranium(IV) tris­ulfide

M. D. Ward and J. A. Ibers

Abstract: Crystals of NiUS3 were obtained from the reaction of the elements Ni, U, S, and of GeI2 in a CsCl flux at 1173 K. Nickel(II) uranium(IV) tris­ulfide, NiUS3, has ortho­rhom­bic (Pnma) symmetry and crystallizes in the GdFeO3 structure type. The compound has a perovskite ABQ3-like structure, with U occupying the inter­stitial sites of a NiS6 framework. The U atoms are coordinated by eight S atoms in a distorted bicapped trigonal-prismatic arrangement. The Ni atoms are coordinated by six S atoms in a slightly distorted octa­hedral arrangement. The asymmetric unit comprises one U site (site symmetry .m.), one Ni site (-1), and two S sites (1 and .m.).


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