Molecular Interactions Studies Using Excess Thermodynamic Function in the Binary Mixtures of Cyclohexanol with Bromo, Chloro and Nitro Substituted Benzenes

Abstract

The molecular interactions operating in polar liquid mixtures can be studied conveniently by non-spectral methods, namely, excess thermodynamic quantities, as it reflects the solution dynamics and hence helps to understand the type and nature of molecular ineractions. Molar excess volume, excess viscosity, Gibbs' free energy
change of viscous flow, interaction parameter and interaction energy
for the binaries of bromobenzene, chlorobenzene and nitrobenzene
with cyclohexanol at selected compositions were determined from
the measured values of density and viscosity of pure liquids and
their binaries at 303.15 K. FT-IR spectra at chosen composition of
titled binaries were recorded with a view to substantiate the conclusion
obtained from excess function investigations. Besides, an
attempt is made to discern how the substituents present in the
solvent molecule affect the solute-solvent interactions by different
functional groups of polar aromatic compounds.