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The Structure of the High Temperature Modification of Lithium Triflate (γ‐LiSO 3 CF 3 )
Author(s) -
Dinnebier Robert,
Sofitalia,
Jansen Martin
Publication year - 2004
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.200400224
Subject(s) - trifluoromethanesulfonate , orthorhombic crystal system , cationic polymerization , crystallography , crystal structure , lithium (medication) , ion , chemistry , diffraction , x ray crystallography , inorganic chemistry , materials science , stereochemistry , polymer chemistry , physics , organic chemistry , optics , medicine , endocrinology , catalysis
Abstract The high temperature modification of lithium triflate (γ‐LiSO 3 CF 3 ) crystallises in the orthorhombic space group Cmca with the lattice parameters a = 6.3022(4), b = 8.6989(5), and c = 20.1262(14) Å (synchrotron powder diffraction data, T = 456 K). The crystal structure of γ‐LiSO 3 CF 3 is disordered, in the cationic as well as the anionic partial structure, and exhibits double layers of triflate anions with the lipophilic CF 3 ‐groups facing each other. The lithium ions could not be located by the diffraction experiment due to their high mobility. The staggered triflate anion is twofold disorderd leading to two different positions on top of each other which are tilted to one another.