Dynamics of Aromatic Molecules Clathrated in Crystalline Syndiotactic Polystyrene: A Solid State2H NMR Investigation of the Host/Guest Complexes

Abstract

Syndiotactic polystyrene clathrates hosting benzene-d6 or toluene-d8 molecules in the cavities of the δ crystalline form have been prepared and investigated by means of solid state 2H NMR spectroscopy. Benzene-d6 molecules were found to be involved in a fast rotation about the C6 symmetry axis whereas the toluene-d8 molecules exhibit a fast rotation of the methyl group about the symmetry axis passing through the C1 and C4 carbon atoms.