Calorimetric investigations of association in ternary systems. Part 4.—The influence of solvation on enthalpy of complex formation in phenol-tetrahydrofuran and 2,6-dimethylphenol–tetrahydrofuran systems

Abstract

The enthalpies of solution of tetrahydrofuran (THF), phenol (Ph) and 2,6-dimethylphenol (DMPh) have been determined in benzene, toluene, p-xylene and 1,1,2,2-tetrachloroethane. The equilibrium constants and enthalpies of hydrogen-bond complex formation (1:1) of Ph–THF and DMPh–THF have been determined calorimetrically in the abovementioned solvents. The solvent effect on the solution enthalpy of pure compounds and enthalpy of complex formation are discussed.