A DIELECTRIC-RELAXATION STUDY OF ASSOCIATION IN BINARY-MIXTURES OF ACETIC-ACID WITH N-METHYLPYRROLIDONE OR DIMETHYLSULFOXIDE

被引：8

作者：

WESSELS, V

STOCKHAUSEN, M

SCHUTZ, G

机构：

[1] Institut für Physikalische Chemie

来源：

ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE NEUE FOLGE | 1990年 / 168卷

关键词：

ASSOCIATION; CARBOXYLIC ACIDS; DIELECTRIC RELAXATION; HYDROGEN BONDS; LIQUIDS;

D O I：

10.1524/zpch.1990.168.Part_2.193

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：

The frequency dependent complex permittivity of the title mixtures has been measured in the MHz to 72 GHz range at 20-degrees-C. At medium mixture ratios the dielectric spectrum exhibits a contribution with a relatively long relaxation time (about 150 ps) which is discussed by means of a model supported data analysis. This leads to the conclusion that the low frequency feature is due to 1:1 heteroassociates. The dielectric behaviour shows only marginal differences between associates of acetic acid with methylpyrrolidone (via C = O) and with DMSO (via S = O).

引用

页码：193 / 203

页数：11

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