Hydration and dielectrical properties of aqueous pyrrolidinium trifluoroacetate solutions


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Results from microwave measurements of the dielectrical properties of aqueous pyrrolidinium trifluoroacetate solutions at maximum water dispersion frequencies (13–25 GHz) and temperatures of 288, 298, and 308 K are given. The static dielectrical constants, times, and activation parameters of the dielectrical relaxation of solutions are calculated. The enthalpy and time of dielectrical relaxation activation are increased by deceleration of the motion of water molecules in the hydrate shells of ions. The changes in dielectrical parameters are in this case minimal in a series of aqueous solutions of diallylammonium salts with cations of different structures and degrees of substitution. It is shown that pyrrolidinium ions are characterized by weak hydrophobic hydration.

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A. Lyashchenko

Kurnakov Institute of General and Inorganic Chemistry

编辑信件的主要联系方式.
Email: aklyas@mail.ru
俄罗斯联邦, Moscow, 119991

I. Balakaeva

Kurnakov Institute of General and Inorganic Chemistry

Email: aklyas@mail.ru
俄罗斯联邦, Moscow, 119991

Yu. Simonova

Topchiev Institute of Petrochemical Synthesis

Email: aklyas@mail.ru
俄罗斯联邦, Moscow, 119991

L. Timofeeva

Topchiev Institute of Petrochemical Synthesis

Email: aklyas@mail.ru
俄罗斯联邦, Moscow, 119991

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