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1 H and 19 F NMR Study of Ion Dynamics in tris‐Guanidinium Heptafluorozirconate [C(NH 2 ) 3 ] 3 ZrF 7
Author(s) -
Grottel M.,
Kozak A.,
Paja¸k Z.
Publication year - 1998
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/(sici)1521-3951(199806)207:2<333::aid-pssb333>3.0.co;2-#
Subject(s) - ion , chemistry , crystallography , tris , analytical chemistry (journal) , physics , organic chemistry , biochemistry
Proton and fluorine NMR spectra and spin–lattice relaxation times were measured for polycrystalline tris ‐guanidinium heptafluorozirconate in a wide temperature range. In‐plane C 3 reorientation of the guanidinium cation hindered by the energy barrier E a = 48.4 kJ/mol and isotropic reorientation of the fluoro‐anion with the activation energy E a = 38.8 kJ/mol have been revealed. At 467 K a solid–solid and at 541 K a solid–liquid phase transition have been discovered.