ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
Pyridinium fluorosulfonate has been synthesized and studied over a wide range of temperatures by differential thermal analysis, differential scanning calorimetry, 1H and 19F nuclear magnetic resonance (NMR) spectra and relaxation, and complex dielectric permittivity. The room temperature crystal structure has been determined by x-ray diffraction as trigonal, space group R3¯m, Z=1 with a=5.762 Å and α=97.96° and confirmed by FTIR spectra. Three solid–solid phase transitions at 235, 272, and 282 K have been disclosed and the dynamics of the pyridinium cation and the fluorosulfonate anion characterized. The polar properties of phase II have been demonstrated. The upper transition temperature 282 K appears to be the Curie point of a new ferroelectric compound. © 2000 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.481860
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