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

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 (VE) and excess isentropic compressibility (ksE) 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 ??OH, ??CH and ??CCl 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.