Temperature dependence of the dielectric relaxation of liquid dimethyl- and diethylsulfoxides

被引：38

作者：

Gabrielian, LS ^{[1
]}

Markarian, SA ^{[1
]}

机构：

[1] Yerevan State Univ, Dept Chem, Yerevan 375049, Armenia

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2004年 / 112卷 / 03期

关键词：

dielectric spectra; diethylsulfoxide; self-association;

D O I：

10.1016/S0167-7322(03)00283-6

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 loss spectra of pure liquid dimethylsulfoxide (DMSO) and diethylsulfoxide, (DESO) have been measured from 0.3 to 72 GHz at 40 and 60 degreesC. Considering also a previous result for 20 degreesC it turns out that in the whole temperature range the DMSO spectrum is practically of Debye type whereas the DESO spectrum is slightly broadened towards the high frequency side, formally to be described by a Cole-Davidson function. Besides spectral parameters, also activation energies as calculated from relaxation times and Kirkwood correlation factors are reported. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：137 / 140

页数：4

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