Acta Crystallographica Section B

Structural Science

Volume 64, Part 2 (April 2008)

research papers

Acta Cryst. (2008). B64, 172-176 [ doi:10.1107/S0108768108004175 ]

Crystal architecture of R₂SnS₅ (R = Pr, Nd, Gd and Tb): crystal structure relationships in chalcogenides

M. Daszkiewicz, L. D. Gulay and V. Y. Shemet

Abstract: The crystal structure of the R₂SnS₅ (R = Pr, Nd, Gd and Tb) compounds has been investigated using X-ray single-crystal diffraction. Crystal architecture and structural relationships among U₃S₅, Y₂HfS₅, R₂SnS₅ compounds are discussed and a structural origin is determined. It is shown that the complex architecture of the crystal structure of Eu₅Sn₃S₁₂ is a result of interweaving of the simple crystal structures. The location of the copper ions in the non-stoichiometric compound Y₂Cu_0.20Sn_0.95S₅ is proposed on the basis of comparative analysis of the R-S interatomic distances in the R₂SnS₅ series of compounds.

Keywords: chalcogenides; rare-earth compounds; structural relationships.


	Structure factor file (CIF format) (22.9 kbytes) [ doi:10.1107/S0108768108004175/bs5058prsup2.hkl ] Contains datablock pr

	Structure factor file (CIF format) (20.5 kbytes) [ doi:10.1107/S0108768108004175/bs5058ndsup3.hkl ] Contains datablock nd

	Structure factor file (CIF format) (20.4 kbytes) [ doi:10.1107/S0108768108004175/bs5058gdsup4.hkl ] Contains datablock gd

	Structure factor file (CIF format) (23.6 kbytes) [ doi:10.1107/S0108768108004175/bs5058tbsup5.hkl ] Contains datablock tb

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