A synchrotron study of Ba5Ta2Cl2O9

Barnes, Andrew D J; Francesconi, M. Grazia; Prior, Timothy J.

Abstract

The structure of pentabarium ditantalum dichloride nonaoxide, Ba5Ta2Cl2O9, is isotypic with Ba5Ru1.6W0.4Cl2O9 and with one polymorph of Ba5Ru2Cl2O9. It is related to the perovskite structure and shows a ten-layer stacking of BaO3 and BaCl blocks along the c axis. The Ta cations occupy octahedral interstices, forming Ta2O9 dimers of distorted face-shared TaO6 octahedra. Except for one O atom, all atoms are situated on special positions: Ba1 (Wyckoff position (6) over bar m2), Ba2 and Ba3 (3m.), Ta (3m.), Cl (3m.) and O1 (mm2).

Citation

Barnes, A. D. J., Francesconi, M. G., & Prior, T. J. (2007). A synchrotron study of Ba5Ta2Cl2O9. Acta Crystallographica Section E: Crystallographic Communications, 63(5), I127 - I128. https://doi.org/10.1107/S1600536807016790

• Journal Article Type: Article
• Acceptance Date: May 31, 2007
• Publication Date: Dec 1, 2007
• Deposit Date: Oct 15, 2019
• Publicly Available Date: Nov 4, 2019
• Print ISSN: 2056-9890
• Publisher: International Union of Crystallography
• Peer Reviewed: Peer Reviewed
• Volume: 63
• Issue: 5
• Pages: I127 - I128
• DOI: https://doi.org/10.1107/S1600536807016790
• Public URL: https://hull-repository.worktribe.com/output/396012
• Contract Date: Nov 4, 2019