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The crystal structure of the selenide-based synthetic sulfosalt CuPbSb3Se6
Paul Sicher1, Berthold Stöger1
1X-Ray Centre, TU Wien, Getreidemarkt 9, 1060 Vienna, Austria.
Abstract:
Single crystals of copper lead tri-anti-mony hexa-selenide, CuPbSb3Se6, were obtained as a minor phase during systematic studies of the formation conditions of selenide-based sulfosalts. The crystal structure is an unusual representative of the family of sulfosalts. Instead of the expected galena-like slabs with octa-hedral coordination, it features mono and double-capped trigonal-prismatic (Pb), square-pyramidal (Sb) and trigonal-bipyramidal (Cu) coordination. All metal positions are occupationally and/or positionally disordered.
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