Orientational and dielectric behaviour of N, N-dimethylformamide in different non-polar solvents

Abstract

Dielectric behaviour of concentrated solutions of different mole fractions of N, N-dimethylformamide in various non-polar solvents has been studied using precision LCR meter with four terminal liquid dielectric test fixture over a frequency range 20 Hz to 2 MHz at 303.15 K temperature. The dielectric parameters namely dielectric constant (ε′), dielectric loss (ε″) and static dielectric constant (ε₀) have been determined by capacitive measurement method. The limiting dielectric constant (ε_∞) has been determined by Abbe’s refractometer for the same solutions at 303.15 K temperature. Kirkwood correlation factor g^eff has also been calculated using determined values of ε₀ and ε_∞,to gain information about the orientational behaviour of N, N-dimethylformamide in different non-polar solvent environments.