Dipole Moment and FT-IR studies of Phenol with some substituted anilines

Abstract

The dipole moments of 1:1complexes formed between phenol and aniline, ochloroaniline, and p-chloroaniline were measured in carbon tetrachloride at a temperature of 303 K. The dipole increments for these systems were calculated based on molecular orbital theory using bond angle data. The observed increase in dipole moment values provides evidence of hydrogen bonding between phenol and all three anilines. As the concentration of phenol increases, the FT-IR intensity decreases, and there is a slight increase in the half-width of the amine band. These observations suggest the formation of 1:1 complexes between phenol and anilines.