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Hydration of Tetraphenylphosphonium and Tetraphenylborate Ions by Dielectric Relaxation Spectroscopy

Wachter, Wolfgang ; Buchner, Richard ; Hefter, Glenn


A systematic study of the dielec. relaxation spectra of aq. solns. of NaBPh4 and Ph4PCl has been made at solute concns. of 0.02 ≤ c/M ≤ 0.82 and 0.20, resp., and over a wide range of frequencies (0.2 ≤ ν/GHz ≤ 89) at 25 °C. The spectra were best described by a superposition of four Debye processes, consisting of a very small ion-pair contribution with an av. relaxation time of about 300 ps, a ...


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