Supramolecular structure and physicochemical properties of the trichloromethane–ethanol mixtures

摘要: Abstract The excess thermodynamic functions (Gibbs energy, enthalpy, and entropy) the dielectric permittivity of trichloromethane–ethanol solutions have been analyzed in entire range compositions a wide temperature framework quasichemical model nonideal associated solution (QCNAS). supramolecular structure, taking into account chain-like cyclic association alcohol molecules complexation aggregates with trichloromethane, is able to reproduce physicochemical properties mixtures good accuracy. equilibrium constants, enthalpies entropies aggregation, structural parameters determined. Distribution over size structure calculated. Supramolecular ethanol long-range molecular correlations, which extend beyond nearest coordination shells revealed. Specific interactions are shown give main contribution positive deviations from ideal behavior. Positive deviation dipole correlation factor unity due predominantly parallel orientation dipoles complexes trichloromethane. influence (linear cyclic) as well solvation on discussed.