The Entropy of Dimethyl Sulfide from Low Temperature Calorimetric Measurements. Restricted Rotation of the Methyl Groups

Abstract

In order to arrive at a satisfactory theory for the potential restricting the rotation of methyl groups in many molecules, it is desirable to determine how the magnitude of the barrier depends on the kind of atom to which the methyl groups are bonded. Recently we have obtained an estimate of the barriers in dimethyl sulfide by comparing the entropy obtained from calorimetric measurements extending to low temperatures with that computed from molecular data.

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