Abstract
Structural and dynamical properties of heterocyclic organic compound isatin in the solution state with DMSO has been studied in the frequency region of 10 MHz to 50 GHz over the temperature range of 273.15–298.15 K using time domain reflectometry. High- and low-frequency relaxation has been observed for Isatin + DMSO. The high-frequency relaxation peak is due to free DMSO molecules while low-frequency relaxation peak is attributed to isatin. Dielectric permittivity, static dielectric constant, relaxation time, dipole moment, correlation factor along with thermodynamical parameters have been calculated. Molecular interaction has been discussed broadly under solute–solute, solute–solvent, and solvent–solvent category.
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