STRUCTURE OF BA3IN2O5F2 BY COMBINED POWDER X-RAY AND NEUTRON-DIFFRACTION ANALYSIS - OXIDE FLUORIDE ORDERING IN A RUDDLESDEN-POPPER PHASE/

Authors
NEEDS RL WELLER MT
Citation
Rl. Needs et Mt. Weller, STRUCTURE OF BA3IN2O5F2 BY COMBINED POWDER X-RAY AND NEUTRON-DIFFRACTION ANALYSIS - OXIDE FLUORIDE ORDERING IN A RUDDLESDEN-POPPER PHASE/, Journal of the Chemical Society. Dalton transactions, (18), 1995, pp. 3015-3017
Citations number
15
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Journal of the Chemical Society. Dalton transactions → ACNP
ISSN journal
03009246
Issue
18
Year of publication
1995
Pages
3015 - 3017
Database
ISI
SICI code
0300-9246(1995):18<3015:SOBBCP>2.0.ZU;2-F
Abstract
The structure of a new fluoride oxide Ba3In2O5F2 has been determined f rom the simultaneous refinement of powder X-ray and powder neutron dif fraction data. This Ruddlesden-Popper type phase crystallises in the s pace group l4/mmm with lattice parameters a = 4.18 and c = 22.82 Angst rom. The structure shows ordering of the oxide and fluoride ions, as e videnced from bond valence considerations, producing sheets of vertex- sharing indium-oxygen square pyramids separated by BaF layers.