Crystal Structure of theRE2PbS4(RE= Y, Dy, Ho, Er, and Tm) Compounds and a Comparison with the Crystal Structures of other Rare Earth Lead Chalcogenides

Autor:	L. D. Gulay, Marek Daszkiewicz, V. Ya. Shemet
Rok vydání:	2008
Předmět:	Inorganic Chemistry Pearson symbol Crystallography Trigonal prism Chemistry Rare earth Crystal structure Single crystal Powder diffraction
Zdroj:	Zeitschrift für anorganische und allgemeine Chemie. 634:1887-1895
ISSN:	1521-3749 0044-2313
DOI:	10.1002/zaac.200800253
Popis:	The crystal structure of the RE2PbS4 (RE = Y, Dy, Ho, Er and Tm) compounds (space group Cmc21, Pearson symbol oC112, a = 0.79301(3) nm, b = 2.86966(9) nm, c = 1.20511(5) nm, RBragg = 0.0979 for Y2PbS4; a = 0.79484(8) nm, b = 2.8721(3) nm, c = 1.2039(1) nm, for Dy2PbS4; a = 0.79081(2) nm, b = 2.86222(7) nm, c = 1.20220(4) nm, RBragg = 0.0859 for Ho2PbS4; a = 0.7863(2) nm, b = 2.8525(5) nm, c = 1.1995(2) nm, R1 = 0.0482 for Er2PbS4 and a = 0.78419(3) nm, b = 2.84184(9) nm, c = 1.19655(4) nm, RBragg = 0.0893 for Tm2PbS4) was investigated by means of X-ray single crystal and powder diffraction. Each RE atoms is octahedrally coordinated by six S atoms. Each Pb atoms is surrounded by seven S atoms to form a mono-capped trigonal prism.
Databáze:	OpenAIRE
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