Influence of the guest molecules on the structural organization of the clathrates of syndiotactic poly(p-methylstyrene)

The influence of the shape and size of guest molecules on the structural or ganization of the alpha and beta class clathrates of syndiotactic poly(p-me thylstyrene) is described, through the analysis of the packing model propos ed for the crystal structures of the clathrate forms containing o-dichlorob enzene and tetrahydrofuran. Preliminary data of the crystal structure of th e s-PPMS clathrate containing benzene and a comparison with the crystal str ucture of the clathrate forms of syndiotactic polystyrene are also presente d.