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Recent experimental and theoretical studies on the successive ionization energies of C 60 yield rather divergent dependences on the charge state z. The present mass spectrometric investigation on the super-asymmetric charge separation reaction of multiply charged C z+60 ions into the two charged fragment ions C (z-1)+58 ...
Gas-phase fast-atom bombardment (FAB) mass spectra of fullerence C 60 , polycyclic aromatic hydrocarbons, n-hydrocarbons, heterocyclic compounds, and others, by using high energy He, Ar, Xe, or isobutane beams, have been compared with the electron impact ionization (EI) and/or charge exchange ionization (CEI) mass spectra. The positive ion gas-phase FAB mass spectra measured show a fragmentation...
The interaction of free electrons in the energy range between 0 and 15 eV with molecules is reviewed. The studies include beam experiments with gas phase molecules under collision-free conditions and at higher pressures, homogeneous and heterogeneous clusters generated in supersonic beams, and molecules adsorbed and condensed on a cold metallic surface. In single molecules under collision-free conditions...
Alkylation of C 60 in tetrahydrofuran with tert-butyl chloride and lithium gives a variety of products. Adducts of general formula C 60 H n (t-Bu) q O x (thf) y (where t-Bu is the tert-butyl group and thf the tetrahydrofuryl group (C 4 H 7 O)) have been detected by mass spectrometry, with n ≤ 8, q + y ≤ 18 and x = 0, 1, 2 depending...
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