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Дата последнего поиска статьи во внешних источниках: 27 мая 2015 г.
Аннотация:Knudsen cell mass spectrometry has been used for the investigation of ion-molecule equilibria between gaseous neutral species and negative ions in fullerene vapors at 800-900 K. Equilibrium constants of one-electron exchange reactions between C60 and the higher fullerenes C70, C76, C78 and C84 have been measured. Electron affinities Of C70, C76, C78 and C84 were found to be 2.72 +/- 0.05, 2.88 +/- 0.05, 3.01 +/- 0.07, and 3.05 +/- 0.08 eV, respectively. Negative ions of C86, C90, and C92 were observed, and the lower limit of electron affinities for these species was estimated as greater-than-or-equal-to 3.0 eV.