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Dielectric relaxation of aqueous NaF and KF solutions

Buchner, R., Hefter, G.T. and Barthel, J. (1994) Dielectric relaxation of aqueous NaF and KF solutions. Journal of the Chemical Society, Faraday Transactions, 90 (17). pp. 2475-2479.

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Dielectric relaxation experiments in the frequency range 0.45 ≤ ν/GHz ≤ 89 are presented for aqueous solutions of NaF and KF at 25°C. The complex permittivity spectra reveal two dispersion steps attributed to the cooperative relaxation of the solvent, τs ≈ 8 ps, and to the formation of a small quantity of predominantly solvent separated ion pairs, τIP ≈ 100 ps. The dielectric decrement observed for the solvent permittivity is discussed in terms of kinetic depolarization and dielectric saturation; 'effective' solvation numbers are estimated.

Item Type: Journal Article
Murdoch Affiliation(s): School of Chemical and Mathematical Science
Publisher: Royal Society of Chemistry
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