A COMPARATIVE DIELECTRIC-RELAXATION STUDY BETWEEN HYDROGEN-BONDED ANDNON-HYDROGEN-BONDED LIQUIDS - NITRILES VS ALCOHOLS

Dielectric properties of nitriles have been studied using time domain reflectometry in the frequency range of 10 MHz to 10 GHz over the temp erature range of 0 degrees C to 45 degrees C. The calculated dielectri c relaxation parameters are compared with values for the corresponding n-alcohols. The dielectric behaviour in n-nitrile systems is quite di fferent from the corresponding behaviour in n-alcohols. The dipoles in n-nitrile systems show a tendency to remain antiparallel, unlike in a lcohol systems. The activation energy decreases with the increase of m olecular size, whereas in hydrogen bonded liquid it increases.