Abstract
Black, fibre-like crystals of Tl2SnS3 were obtained from the melt using high-purity elements. Tl2SnS3 is monoclinic, space group C 2/m witha=23.03 (1),b=3.834 (1),c=7.379 (3) Å, β=94.07 (5)°;Z=4. The crystal structure was determined from single crystal diffractometer intensity data and refined to a conventionalR of 0.127 for 724 observed reflections. The crystal structure is of a new type. It is characterized by infinite chains, ∞1 -[SnS 2−3 ], formed by cornersharing SnS4-tetrahedra. These chains run along [010], their translation period comprises one tetrahedron (“Einerketten”). The average Sn — S-distance is 2.397 Å. The Tl+-ions separating the thiostannate-chains have different sulfur coordination. The coordination figure of Tl(1) is a bicapped trigonal prism, Tl(2) is in the center of an irregular cube. A comparison of the thiostannate-chains with other simple chains built-up by corner-sharing tetrahedra is given.
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Herrn Prof. Dr.Karl Schlögl zum 60. Geburtstag gewidmet.
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Klepp, K.O. Tl2SnS3 — ein Thiostannat mit ∞1 -[SnS 2−3 ]-Ketten. Monatsh Chem 115, 1133–1142 (1984). https://doi.org/10.1007/BF00809344
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DOI: https://doi.org/10.1007/BF00809344