Abstract
A method is presented for the determination of interaction free enthalpies between an interacting group, X, suspended in a paraffin solvent at ideal dilution and a volatile compound dissolved in the same solvent at ideal dilution. The measuring system consists of a family of non-volatile solvents suitable for use as liquid stationary phases in gas chromatography. Members of the family, P, are mono-X-functionalized derivatives of a parent branched paraffin, C 78H 158(C78) with molecules having the same form nearly the same size as those of the non-polar standard, C78. Consequently the solvents P form nearly ideal, regular mixtures with the standard solvent. Gas chromatographic data of solutes on such mixtures allow the calculation of interaction parameters with the aid of equations given in this paper. The method was applied to the determination of interaction data of solutes with free, monomeric primary alcohol groups.
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