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T. A. Shestimerova, A. S. Mitiaev, D. I. Davliatshin, A. V. Shevelkov
Crystal structure of a-Ag8S3SO4
Abstract
Crystal structure of a-Ag8S3SO4
have been determined from the X-ray powder diffraction data. The compound
crystallizes in the tetragonal space group P-4 with the unit cell parameters a
= 7.2032(4) Å,
c= 5.1043(5) Å,
Z = 1, Rf = 5.55 %, c2 = 3.45. The
layers consisting of trigonal prisms Ag6S connected by vertex are
combined into three-dimensional framework by additional sulphur atoms.
Distorted tetrahedral anions SO42– are placed in
framework cavities. SO42– anion symmetry (D2d)
is confirmed by IR spectroscopy data.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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