Dielectric Properties of 4-Cyanobiphenyl in 1, 4-Dioxane Solution

Abstract

The static and dynamic dielectric properties of the title system are reported for a concentration series from about 8 mmol/1 up to 2.3 mol/1 at 20°C. The apparent moment (4.2 D, extrapolated to infinite dilution) decreases with increasing concentration, the relaxation time increases proportional to viscosity, that is, somewhat steeper than usually observed. Comparison with other molecules suggests that these features are mainly due to the high dipole moment rather than being specifically related to the prolate shape of the molecule. The broadening of the spectrum toward the high frequency side, on the other hand, may be due to the molecular shape. © 1994, Verlag der Zeitschrift für Naturforschung. All rights reserved.