Dielectric relaxation of non-rigid polar molecules and their mixtures in 1:4 dioxane

The dielectric Constant and loss factor of the non-rigid polar molecules of o-chloronitrobenzene (I) and 2-chloro-5-aminobenzotrifluoride (II) and their binary mixtures have been measured in dilute solutions of 1:4 dioxane at 9.93 GHz over the temperature range 25–55°C. The dielectric data have been...

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Bibliographic Details
Published in:Current science (Bangalore) 1991-03, Vol.60 (6), p.373-375
Main Authors: Arya, Rashmi, Aggarwal, Chhavi, Gandhi, J. M., Sisodia, M. L.
Format: Article
Language:English
Subjects:
Chemical composition
Dielectric materials
Dioxanes
Hydrogen
Liquids
Molecular interactions
Molecules
Relaxation time
RESEARCH COMMUNICATIONS
Solvents
Thermodynamics
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Summary:The dielectric Constant and loss factor of the non-rigid polar molecules of o-chloronitrobenzene (I) and 2-chloro-5-aminobenzotrifluoride (II) and their binary mixtures have been measured in dilute solutions of 1:4 dioxane at 9.93 GHz over the temperature range 25–55°C. The dielectric data have been used to determine the relaxation times and thermodynamic parameters for the activated state. The relaxation behaviour of the mixtures is found to be the resultant of the relaxation times of its components, suggesting a simple overlap of the individual dispersion regions. The relaxation times of the mixtures have also been obtained and compared with the values computed using various theoretical formulations. The results indicate that none of the formulae used can predict the experimental results to a satisfactory degree.
ISSN:0011-3891