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BELL, Anthony M. T,, HENDERSON, C. Michael B,, WENDLANDT, Richard F. and HARRISON, Wendy J. (2008). Rietveld refinement of Ba5(AsO4)3Cl from high-resolution synchrotron data. Acta Crystallographica Section E, E64 (9), i63-i64.
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Abstract
The apatite-type compound Ba5(AsO4)3Cl, pentabarium tris[arsenate(V)] chloride, has been synthesized by ion exchange at high temperature from a synthetic sample of mimetite (Pb5(AsO4)3Cl) with BaCO3 as a by-product. The results of the Rietveld refinement, based on high resolution synchrotron X-ray powder diffraction data, show that the title compound crystallizes in the same structure as other halogenoapatites with general formula A5(YO4)3X (A = divalent cation, Y = pentavalent cation, X = Cl, Br) in space group P63/m. The structure consists of isolated tetrahedral AsO4 3- anions (m symmetry), separated by two crystallographically independent Ba2+ cations that are located on mirror planes and threefold rotation axes, respectively. The Cl- anions are at the 2b sites (3 symmetry) and are located in the channels of the structure.
| Item Type: | Article |
|---|---|
| Identification Number: | https://doi.org/10.1107/S1600536808026901 |
| Page Range: | i63-i64 |
| Depositing User: | Anthony Bell |
| Date Deposited: | 28 Jul 2016 13:09 |
| Last Modified: | 18 Mar 2021 04:11 |
| URI: | https://shura.shu.ac.uk/id/eprint/12759 |
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