Dielectric and ultrasonic studies of benzene-hexafluorobenzene mixtures
โ Scribed by A.K.M. Masood; A.M. North; R.A. Pethrick; M. Towland; F.L. Swinton
- Publisher
- Elsevier Science
- Year
- 1976
- Weight
- 422 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0001-8716
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โฆ Synopsis
Building, Dielectric and ultrasonic measurements on binary mixtures of benzene with hexafluorobenzene are reported. The dielectric measurements cover the submillimetre and microwave spectral regions and the ultrasonic absorption experiments were performed at 1.5 MHZ. Excess functions computed from these data are found to exhibit a maximum towards the benzene-rich mixtures. The significance of these observations is discussed in terms of the existence of small concentrations of weakly interacting species in these mixtures.
๐ SIMILAR VOLUMES
The benzene โข โข โข hexafluorobenzene stacking interaction was evaluated at several levels of theory. At the MP2/6-31G\*\* level, it is estimated that the interaction is stabilizing by approximately 3.7 kcal mol ฯช 1 . Lower levels of theory perform poorly on this system. This is a fairly strong non-co
Ultrasonic and dielectric relaxation measurements are reported as a function of frequency and temperature for a series of segmented ester polyurethanes. Glass transitions for the ester block were determined using a combination of differential scanning calorimetry and dilatometry. The activation ener