Molecular interactions of p-chlorotoluene and 1-alkanols at different temperatures: Volumetric, ultrasonic and FT-IR spectroscopic studies

Abstract To understand the nature and type of intra- and inter molecular interactions between p -chlorotoluene (PCT) and 1-alkanols, measurements such as density and speed of sound at T = (298.15 K - 318.15) K and at 0.1 MPa have been carried out. These experimental quantities were used to calculate excess properties, i.e. excess volume ( V E ) and excess isentropic compressibility ( k s E ) for all the binary mixtures. The calculated excess properties were satisfactorily fitted to the Redlich–Kister polynomial equation. Furthermore, FT-IR spectra of pure liquids with their mixtures at various mole fractions (≈0.2, ≈0.5, ≈0.8) of PCT for all binary systems were recorded. Moreover, it is required to analyze the ?? O H , ?? C H and ?? C Cl stretching vibrational frequencies from the recorded FT-IR spectrum to predict the hydrogen bond formation, dipole interactions, Vander Waals interactions and structural effects between component molecules in liquid mixtures.