Hydrogen Bonding Interaction between Amide and Alcohols: Dielectric Relaxation and FTIR Study

Abstract

The dielectric relaxation study for the hydrogen bonded binary system of polar liquid N,N-dimethylacetamide in butanol and pentanol, has been carried out at 11 concentrations over the frequency range of 10 MHz–20 GHz at 303 K using TDR. The least squares fit method has been used to obtain the static dielectric constant (ε₀) and relaxation time (τ). By using dielectric parameters the excess permittivity (ε^E), excess inverses relaxation time (1/τ)^E, Kirkwood Correlation factor (g) are also obtained to explore the hydrogen-bonded hetero-molecular interactions. Conformational analysis of the hydrogen bond between the two systems is supported by the FTIR spectra.

Keywords:

• Dielectric relaxation
• excess parameter
• Kirkwood correlation factor
• Time Domain Reflectometry
• FTIR

Acknowledgments

UGC-SAP thankfully acknowledged.