FRAGMENTATION OF FULLERENES AND METALLOFULLERENES BY SURFACE IMPACT

R.D. Beck, P. Weis, J. Rockenberger, R. Michel, D. Fuchs, M. Benz and M.M. Kappes
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R.D. Beck: Institut für Physikalische Chemie II, Universität Karlsruhe, 76128 Karlsruhe, Germany
P. Weis: Institut für Physikalische Chemie II, Universität Karlsruhe, 76128 Karlsruhe, Germany
J. Rockenberger: Institut für Physikalische Chemie II, Universität Karlsruhe, 76128 Karlsruhe, Germany
R. Michel: Institut für Physikalische Chemie II, Universität Karlsruhe, 76128 Karlsruhe, Germany
D. Fuchs: INFP, Kernforschungszentrum Karlsruhe, 76021 Karlsruhe, Germany
M. Benz: Institut für Physikalische Chemie II, Universität Karlsruhe, 76128 Karlsruhe, Germany
M.M. Kappes: Institut für Physikalische Chemie II, Universität Karlsruhe, 76128 Karlsruhe, Germany

Surface Review and Letters (SRL), 1996, vol. 03, issue 01, 881-885

Abstract: Fragmentation by surface collision has been studied for the (endohedral) metallofullerene speciesLaC82+andLa2C100+. Three different types of fragment ions are detected: (i) Lanthanum-containing carbon clusters formed by loss ofC2and/or small even-numberedC2nunits, (ii) empty fullerenes${\rm{C}}_{2n}^+$, and (iii) small lanthanum-containing fragmentsLaC2n+withn=0, 1, 2, 3 (andLa2C2n,n=1, 2, forLa2C100+). Possible fragmentation processes are discussed and the results are compared with the surface-induced fragmentation of higher fullerenes.

Date: 1996
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DOI: 10.1142/S0218625X96001583

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