Dielectric relaxation study of binary mixtures of 2-Methoxyathanol in Nitrobenzene and Chlorobenzene using Time domain Reflectometry

The dielectric relaxation studies of a liquid and liquid mixture provides valuable information about intermolecular interaction along with dynamics at molecular levels. In Nitrobenzene (NB) and Chlorobenzene (CB) molecules the charge distribution is shielded and H-bonds do not appear and where as in 2-Methoxyethanol (2-ME) molecules the charge distribution is exposed. In pure Nitrobenzene and Chlorobenzene spatial correlation between molecules appear only through dipole-dipole interactions. An exposed distribution of charges, lead to very strong intermolecular interaction, however, in shielded distribution relative contribution to neighbor molecules is absent and weak intermolecular interaction is expected in liquid mixtures. To study these aspects the Time domain Reflectometry technique has been used to obtain complex dielectric spectra of binary mixture of 2-ME with NB and CB in the frequency range of 10 MHz to 10 GHz at various temperatures the results are presented and discussed.