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Etude cristallographique de quelques fluorures complexes de terres rares de formule A 2 NaTF 6
Author(s) -
Aléonard S.,
Pouzet C.
Publication year - 1968
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889868005091
Subject(s) - crystallography , chemistry , ion , organic chemistry
Rb 2 NaTF 6 and Cs 2 NaTF 6 fluorides, with T = Yb, Er, Ho, Y, Tb and Sm, belong to the cubic system [space group Fm 3 m ( O )]. Lattice parameters (near to 9 Å), indices, intensities and spacings are tabulated for the whole series. They are ordered perovskites. The cations are in parameterless positions. The parameters of the F − ions have been determined in Rb 2 NaErF 6 and Cs 2 NaErF 6 .