Dielectric Studies. XIII. Relaxation Processes of Some Haloethanes in Cyclohexane Solution
- 15 December 1966
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 45 (12), 4733-4737
- https://doi.org/10.1063/1.1727565
Abstract
The dielectric absorption of several haloethanes in cyclohexane solution has been determined at microwave frequencies and the static dielectric constant at 2 Mc/sec. The dielectric data have been used to yield mean relaxation times and apparent dipole moments. Pentachloro-,1,1,2,2-tetrabromo-, and 1,1,1,2-tetrachloroethane which have a high potential-energy barrier to internal rotation are characterized by a single relaxation time and a distribution coefficient of zero, whereas those with low-energy barriers of about 3 kcal/mole all show a definite distribution coefficient which suggests a contribution from an intramolecular relaxation process.Keywords
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