Dielectric permittivity measurements of t-butyl compounds

Abstract

The low frequency dielectric permittivity has been measured in the different crystal phases of t-butyl chloride, bromide and cyanide. The results have been analysed using model calculations of restricted rotation of the dipole and it has been possible to estimate the effect of preferred orientation of the crystallites in the sample. By comparing the dielectric constant results with those from incoherent quasielastic neutron scattering, it has been possible to establish the nature of the molecular motions in the intermediate phases of t-butyl chloride and bromide.