NEUTRON SPECTROSCOPY OF C60HX QUENCHED UNDER HYDROGEN PRESSURE

inelastic neutron scattering spectra were measured at 85 K for a hydro fullerite quenched to this temperature after a synthesis at 620 K unde r a hydrogen pressure of 0.6 GPa, and for the same sample annealed at 300 K. The quenched sample consisted of C60H24 molecules and of inters titial molecular hydrogen (1.4 Hz molecules per unit C-60). The inters titial H-2 left the sample during the annealing at 300 K. The intramol ecular and intermolecular C60H24 vibrations and H-2 rotations are disc ussed based an the measured spectra.