DIELECTRIC-RELAXATION OF AQUEOUS NAF AND KF SOLUTIONS

被引：56

作者：

BUCHNER, R ^{[1
]}

HEFTER, GT ^{[1
]}

BARTHEL, J ^{[1
]}

机构：

[1] UNIV REGENSBURG,INST PHYS & THEORET CHEM,D-93040 REGENSBURG,GERMANY

来源：

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1994年 / 90卷 / 17期

关键词：

D O I：

10.1039/ft9949002475

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Dielectric relaxation experiments in the frequency range 0.45 less-than-or-equal-to upsilon/GHz less-than-or-equal-to 89 are presented for aqueous solutions of NaF and KF at 25-degrees-C. The complex permittivity spectra reveal two dispersion steps attributed to the cooperative relaxation of the solvent, tau(s) almost-equal-to 8 ps, and to the formation of a small quantity of predominantly solvent-separated ion pairs, tau(IP) almost-equal-to 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.

引用

页码：2475 / 2479

页数：5

共 30 条

[1] A COMPUTER-CONTROLLED SYSTEM OF TRANSMISSION-LINES FOR THE DETERMINATION OF THE COMPLEX PERMITTIVITY OF LOSSY LIQUIDS BETWEEN 8.5-GHZ AND 90-GHZ [J].