The crystal structure of non-stoichiometric monoclinic Cr5+xS8 (x = 0.20 and 0.26) prepared under high pressure and high temperature
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W. Bensch
Abstract
Two non-stoichiometric chromium rich Cr5+xS8 (x = 0.20 and 0.26) samples were prepared under high pressure and high temperature conditions. In the crystal structures three different metal atom sites are fully and the fourth site is only partially occupied. The results of single crystal and Rietveld refinements are in good agreement. The CrS6 octahedra share common corners and common faces. Across common faces extraordinary short Cr—Cr distances are observed suggesting metal-to-metal bonding. On the basis of the distortion of the CrS6 octahedra Cr4+ is located on two of the four Cr sites. With increasing Cr content the amount of Cr4+ is lowered and the distortion of two of the four CrS6 octahedra is significantly reduced.
© 2002 Oldenbourg Wissenschaftsverlag GmbH
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- Books Received
Articles in the same Issue
- Analysis of short and long range atomic order in nanocrystalline diamonds with application of powder diffractometry
- The crystal structure of non-stoichiometric monoclinic Cr5+xS8 (x = 0.20 and 0.26) prepared under high pressure and high temperature
- Study of effect of thermal annealing on crystalline perfection of bismuth germanate single crystals grown by low thermal gradient Czochralski method
- The high-pressure behaviour of 3R-NbS2
- Crystal structure analysis and extremely long-living light-induced metastable states in RbY[Fe(CN)5NO]2·10H2O and CsY[Fe(CN)5NO]2·10H2O
- Structural investigation of the phase transitions of [N(CH3)4]2HgCl4
- Phase transitions in solid solution series bismutocolumbite – stibiocolumbite (Bi-Sb)(Nb0.79Ta0.21)O4
- A reinvestigation of Wilm's salt, (NH4)4[RhCl6]NO3 -structure, spectroscopy and thermal analysis-
- Books Received
