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Powder diffraction data for niobium IV hexafluorides: VNbF6 and CrNbF6

Published online by Cambridge University Press:  10 January 2013

Fabrice Goubard ,
Daniel Bizot  and
Jean Chassaing
Fabrice Goubard
Affiliation:
Laboratoire de Cristallochimie du Solide, CNRS-URA 1388, Université P. et M. Curie, 4 place Jussieu, 75252 Paris Cedex 05, France
Daniel Bizot
Affiliation:
Laboratoire de Cristallochimie du Solide, CNRS-URA 1388, Université P. et M. Curie, 4 place Jussieu, 75252 Paris Cedex 05, France
Jean Chassaing
Affiliation:
Laboratoire de Cristallochimie du Solide, CNRS-URA 1388, Université P. et M. Curie, 4 place Jussieu, 75252 Paris Cedex 05, France
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Abstract

New hexafluoroniobates IV, VNbF6 and the high-temperature form of CrNbF6 have been synthesized by solid-state reaction. The former is isostructural with rhombohedral LiSbF6, space group R3¯, and the latter crystallizes with tetragonal symmetry, space group I/4mmm. Unit-cell parameters were determined: a=5.520(1) Å, c=13.987(5) Å, V=369.0(1) Å3, Z=3 for VNbF6, and a=5.5403(5) Å, c=8.453(1) Å, V=259.5(1) Å3, Z=2 for the “HT” form of CrNbF6. Powder diffraction data are reported.

Type
Research Article
Information
Powder Diffraction , Volume 13 , Issue 3 , September 1998 , pp. 132 - 133
Copyright
Copyright © Cambridge University Press 1998

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References

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