Abstract
In thiourea inclusion compounds the host substructure comprises a hydrogen-bonded arrangement of thiourea molecules and contains 1-D channels within which guest molecules are located. These organic composite crystals display structural phase transitions on cooling from room temperature. Our aim is to elucidate the mechanisms of the phase transitions in these materials. The dynamics of the guest molecules has been investigated by means of incoherent quasielastic neutron scattering spectroscopy and computer simulations have been performed to help in the interpretation of the experimental data. In this short note we report the preliminary analysis of the dynamics of cyclohexane and chlorocyclohexane guest molecules in the high-temperature phases of their inclusion compounds.
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