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A synchrotron study of Ba5Ta2Cl2O9

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


Andrew D J Barnes


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 Oct 27, 2022
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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