抄録
The thiourea hexachloroethane adduct has been studied by single crystal X-ray diffraction and low temperature calorimetry. The guest molecules are disordered in three orientations in the adduct channel. The thermal properties are described consistently by a model involving the orientational disorder of the guest molecules and their ordering in a phase transition at 96K. A small degree of disorder persists to lower temperatures and becomes frozen into an immobile state below a glass transition at 59K.