Issue 17, 1994

Dielectric relaxation of aqueous NaF and KF solutions

Abstract

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.

Article information

Article type
Paper

J. Chem. Soc., Faraday Trans., 1994,90, 2475-2479

Dielectric relaxation of aqueous NaF and KF solutions

R. Buchner, G. T. Hefter and J. Barthel, J. Chem. Soc., Faraday Trans., 1994, 90, 2475 DOI: 10.1039/FT9949002475

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