C2-LOSS FRAGMENTATION OF HIGHER FULLERENES AND METALLOFULLERENES

T. Wakabayashi, H. Shiromaru, S. Suzuki, K. Kikuchi and Y. Achiba
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T. Wakabayashi: Department of Chemistry, Tokyo Metropolitan University, Hachioji, Tokyo 192–03, Japan
H. Shiromaru: Department of Chemistry, Tokyo Metropolitan University, Hachioji, Tokyo 192–03, Japan
S. Suzuki: Department of Chemistry, Tokyo Metropolitan University, Hachioji, Tokyo 192–03, Japan
K. Kikuchi: Department of Chemistry, Tokyo Metropolitan University, Hachioji, Tokyo 192–03, Japan
Y. Achiba: Department of Chemistry, Tokyo Metropolitan University, Hachioji, Tokyo 192–03, Japan

Surface Review and Letters (SRL), 1996, vol. 03, issue 01, 793-798

Abstract: Photofragmentation investigations were performed by using chromatographically isolated pure samples of higher fullerenes and metallofullerenes. Quite similar distributions of fragments were commonly observed for five different fullerenes, and this fact supports the presence of a “scrambled-cage” structure in a highly excited fullerene cage. An enhancement of theC60andC70signals was also observed as a result of “delayedC2-loss” fragmentation within a time scale of about 60 µs after photoexcitation. Photodissociation study of mono- and di-metallofullerenes revealed the qualitative difference in the fragment distributions between them, suggesting thatLaC82would possess an endohedral, andSc2C84an exohedral, form.

Date: 1996
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DOI: 10.1142/S0218625X96001431

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