Dissociation of Singly and Multiply Charged Fullerenes: Emission of C4, or Sequential Emission of C2?
We have obtained direct mass spectrometric evidence that fullerene ions Cz+60 (z=1, 2, or 3) and Cz+58(z=1,2) undergo unimolecular dissociation by sequential emission of two C2 units, on a time scale of 10−5 s. Moreover, a comparison of experimental and theoretical breakdown graphs reveals that unimolecular formation of C+56 from the C+60 parent ion within a given observational time window is dominated by successive loss of C2; direct C4 loss does not contribute significantly. This conclusion is not affected by uncertainties in our knowledge of the energetics of C2 vs C4 loss. REFERENCES
Journal of Chemical Physics
Digital Object Identifier (DOI)
M. Foltin, O. Echt, P. Scheier, B. Dünser, R. Wörgötter, D. Muigg, S. Matt, and T. D. Märk, Dissociation of Singly and Multiply Charged Fullerenes: Emission of C4, or Sequential Emission of C2? J. Chem. Phys. 107 (1997) 6246 – 6256, DOI: 10.1063/1.475317.