Spectral and Ultrasonic Investigation of Hydrogen Bonded Complexes of Cyclohexanol and Aryl Ketones in DMSO Medium
UV spectral studies and ultrasonic method are used to investigate the presence of associative interaction between cyclohexanol (CHL) and two aromatic ketones (acetophenone (ACP) and p-nitroacetophenone (PNA)) in DMSO medium. The variation of acoustic parameters with concentration establishes the molecular association in this ternary liquid mixture. The effect of temperature on H-bonding is also studied using acoustic method by determining the acoustical properties at three different temperatures. UV-visible spectral studies are carried out at room temperature (303K). Ultrasonic velocity plots show the concentrations at which the interaction is strong, and UV spectra are recorded at these specific concentrations. The spectra are recorded at specific concentrations at which the interaction is strong which is identified from ultrasonic velocity plots. The appearance of new absorptions in UV-visible spectra in the two systems confirms the presence of intermolecular hydrogen bond between CHL and the two aryl ketones.
Hydrogen bonded interaction, cyclohexanol-acetophenone, cyclohexanol-p-nitroacetophenone, adiabatic compressibility, free length, internal pressure.