Neutron spectroscopy of C60 fullerite hydrogenated under high pressure; evidence for interstitial molecular hydrogenстатья
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Дата последнего поиска статьи во внешних источниках: 3 февраля 2015 г.
Аннотация:nelastic neutron scattering spectra of a hydrofullerite quenched after synthesis at 620 K under a hydrogen pressure of 0.6 GPa, and of the same sample after annealing at 300 K for 35 h, which reduced the hydrogen content by 1.4 H-2 molecules per C-60 unit, were measured at 85 K. The quenched sample is shown to consist of C60Hx molecules with x approximate to 24 and of interstitial molecular hydrogen. The interstitial molecular hydrogen left the sample during annealing at room temperature, whereas the C60Hx molecules were stable at this temperature. The intramolecular and intermolecular vibrations of C60Hx and H-2 in the fullerite are discussed in view of the measured spectra.