High Frequency Dielectric Response of the Ionic
Liquid N-Methyl-N-ethylpyrrolidonium Dicyanamide
S. Schrödle, G. Annat, D. MacFarlane, M. Forsyth, R. Buchner and G. Hefter,
Aust. J. Chem 60 (2007) 6-8. DOI: 10.1071/CH06251.
A study of the room-temperature ionic liquid N-methyl-N-ethylpyrrolidonium dicyanamide by
dielectric relaxation spectroscopy over the frequency range 0.2 GHz <=n <=89
GHz has revealed that, in addition to the already known lower frequency processes, there is a broad featureless dielectric
loss at higher frequencies. The latter is probably due to the translational (oscillatory) motions of the dipolar
ions of the IL relative to each other, with additional contributions from their fast rotation.