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Physicochemical properties and FT-IR spectral studies of binary liquid mixtures containing anisole with isomeric cresols

ABSTRACT Densities (ρ) and speed of sound (u) data for anisole with o-cresol, m-cresol and p-cresol binary liquid mixtures were estimated over the temperature at T = (303.15, 308.15 and 313.15) K and at atmospheric pressure. The experimental data were used to compute excess volume (VE ) and excess isentropic compressibilities (κS E ) at all the investigated temperatures. The magnitude of excess properties is negative for all the mixtures containing anisole with isomeric cresols due to existence of solvent–solute interactions of hydrogen bond. The V E and κ S E were fitted and correlated with Redlich-Kister type equation. Further, the measured sound speed data were compared with Schaff’s Collision Factor Theory (CFT) and Jacobson’s Free length Theory (FLT) to check their predictive capability. The resultant of these properties, with structure and temperature, was explained in terms of molecular interactions owing to physiochemical effects between the unlike molecules of the binary mixtures. Further, FT-IR data were also collected to confirm the existence of hydrogen bonding between molecules.