Raman spectral studies on 2′-hydroxyacetophenone in binary liquid mixtures

Raman spectra of neat 2′-hydroxyacetophenone (2′-HAP) and its binary liquid mixtures in three different solvents of varying polarity in different volume fractions have been recorded. A complete Raman spectral analysis has been proposed for the neat 2′-HAP. Since carbonyl group plays a vital role in determining the physical and chemical properties of a molecule due to its high permanent dipole moment of strength, the behaviour of ν(CO), carbonyl stretching mode, in binary liquid mixtures has been investigated experimentally. The signatures in spectral wavenumber position and linewidth (full width at half maximum) have been discussed for neat as well as binary liquid mixtures in different volume ratio in terms of intramolecular and van der Waals interactions. The microviscosity and Onsager model have been used to describe the interactions between the solute and solvent molecules.