DIELECTRIC-PROPERTIES OF CHLOROADAMANTANE AND ADAMANTANONE

The dielectric properties of 1-chloroadamantane (C10H15Cl) and 2-adamantanone (C10H14O) are analyzed over a wide frequency range (5 Hz to 20 GHz) between 150 and 360 K. Dynamical relaxation effects are studied in relation with the structure of the various phases. The single molecular motions of the permanent dipole moments are investigated as a function of temperature and the distributions of their residence times are described. The experimental Kirkwood correlation g-factor shows an antiparallel local order in the plastic phase of both compounds, especially in chloroadamantane just above the phase transition.