Acta Crystallographica Section E (Jul 2012)

Thallium(I) copper(I) thorium(IV) triselenide, TlCuThSe3

  • James A. Ibers,
  • Lukasz A. Koscielski

DOI
https://doi.org/10.1107/S1600536812026669
Journal volume & issue
Vol. 68, no. 7
pp. i52 – i53

Abstract

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Thallium(I) copper(I) thorium(IV) triselenide, TlCuThSe3, crystallizes with four formula units in the space group Cmcm in the KCuZrS3 structure type. There is one crystallographically independent Th, Tl, and Cu atom at a site of symmetry 2/m.., m2m, and m2m, respectively. There are two crystallographically independent Se atoms at sites of symmetry m.. and m2m. The structure consists of sheets of edge-sharing ThSe6 octahedra and CuSe4 tetrahedra stacked parallel to the (010) face, separated by layers filled with chains of Tl running parallel to [100]. Each Tl is coordinated by a trigonal prism of Se atoms.