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A synchrotron study of Ba5Ta2Cl2O9

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


Andrew D J Barnes

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Dr Tim Prior
Senior Lecturer in Inorganic Chemistry


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).


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.

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
Public URL


Published article (213 Kb)

Copyright Statement
© International Union of Crystallography

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