Premium
Synthesis and Crystal Structure of RbKLiAlF 6 – the First Al‐Elpasolite with Three Different Alkali Metals
Author(s) -
Ahrens Mike,
Scholz Gudrun,
Kemnitz Erhard
Publication year - 2008
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200800328
Subject(s) - alkali metal , crystallography , crystal structure , hexagonal crystal system , rietveld refinement , chemistry , space group , materials science , x ray crystallography , physics , diffraction , organic chemistry , optics
The synthesis of RbKLiAlF 6 via a sol‐gel route is described. The crystal structure has been determined using Rietveld ‐refinement. It is shown that the compound crystallizes in the hexagonal 12 L ‐structure of the Cs 2 NaCrF 6 ‐type (space‐group $R{\bar 3}m$ ) with a = 5.7195Å, c = 27.8655(4) Å and therefore belongs to the family of hexagonal elpasolites being the first example for an Al‐elpasolite with three different alkali metals. Further insights regarding structural details could be gained using 87 Rb MAS NMR spectroscopy.