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Dynamics of benzonitrile, propylene carbonate and butylene carbonate: the influence of molecular shape and flexibility on the dielectric relaxation behavior of dipolar aprotic liquids

Barthel, Josef ; Buchner, Richard ; Hölzl, C. ; Münsterer, M.



Abstract

The results of dielec. relaxation expts. on benzonitrile, propylene carbonate and butylene carbonate, performed between 228.15 K and 338.15 K in the frequency range 0.1 ≤ ν/GHz ≤ 89 are presented. The spectra of the three liqs. can be formally fitted with two relaxation processes. The long relaxation time, τ1(T), is equally well described by the Vogel-Fulcher-Tammann and the mode-coupling ...

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