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Crystal structure refinement of the ternary compound Cu2SnTe3 by X-ray powder diffraction

✍ Scribed by G. E. Delgado; A. J. Mora; G. Marcano; C. Rincón

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
164 KB
Volume
43
Category
Article
ISSN
0232-1300

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✦ Synopsis

The ternary compound Cu 2 SnTe 3 crystallizes in the Imm2 (Nº 44) space group, Z = 2, with a = 12.833(4) Å, b = 4.274(1) Å, c = 6.043(1) Å, V = 331.5(1) Å 3 . Its structure was refined from X-ray powder diffraction data using the Rietveld method. The refinement of 25 instrumental and structural variables led to R p = 10.2 %, R wp = 11.8 %, R exp = 7.7 %, R B = 10.6 %, S = 1.6 and χ 2 = 2.6, for 5501 step intensities and 163 independent reflections. This compound is isostructural with Cu 2 GeSe 3 , and consists of a three-dimensional arrangement of slightly distorted CuTe 4 and SnTe 4 tetrahedra connected by common corners.

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