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Dielectric relaxation of aqueous NaF and KF solutions

Buchner, Richard ; Hefter, Glenn ; Barthel, Josef


Dielec. relaxation expts. in the frequency range 0.45 ≤ ν/GHz ≤ 89 are presented for aq. solns. of NaF and KF at 25°. The complex permittivity spectra reveal two dispersion steps attributed to the cooperative reaction of the solvent, τs ≈ 8 ps, and to the formation of a small quantity of predominantly solvent-sepd. ion pairs, τIP ≈ 100 ps. The dielec. decrement obsd. for the solvent ...


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