POWDER DIFFRACTION DATA FOR NIOBIUM-IV HEXAFLUORIDES - VNBF6 AND CRNBF6

Authors
GOUBARD F BIZOT D CHASSAING J
Citation
F. Goubard et al., POWDER DIFFRACTION DATA FOR NIOBIUM-IV HEXAFLUORIDES - VNBF6 AND CRNBF6, Powder diffraction, 13(3), 1998, pp. 132-133
Citations number
6
Categorie Soggetti
Materials Science, Characterization & Testing
Journal title
Powder diffraction → ACNP
ISSN journal
08857156
Volume
13
Issue
3
Year of publication
1998
Pages
132 - 133
Database
ISI
SICI code
0885-7156(1998)13:3<132:PDDFNH>2.0.ZU;2-U
Abstract
New hexafluoroniobates IV, VNbF6 and the high-temperature form of CrNb F6 have been synthesized by solid-state reaction, The former is isostr uctural with rhombohedral LiSbF6, space group <R(3)over bar>, and the latter crystallizes with tetragonal symmetry, space group I/4mmm. Unit -cell parameters were determined: a = 5.520(1) Angstrom, c = 13.987(5) Angstrom, V = 369.0(1) Angstrom(3), Z = 3 for VNbF6, and a = 5.5403(5 ) Angstrom, c = 8.453(1) Angstrom, V = 259.5(1) Angstrom(3), Z = 2 for the ''HT'' form of CrNbF6. Powder diffraction data are reported. (C) 1998 International Centre for Diffraction Data. [S0885-7156(96)00703-8 ]