Size-selective formation of C78 fullerene from a three-dimensional polyyne precursor

Tobe Yoshito*, Rui Umeda, Motohiro Sonoda, Tomonari Wakabayashi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


Multicyclic cagelike cyclophanes 2a and 2b containing cyclobutene rings have been prepared as precursors of three-dimensional polyynes C 78H18 (1a) and C78H12Cl6 (1b), respectively. Laser irradiation of 2a and 2b induced expulsion of the aromatic fragment, indane, to give the three-dimensional polyyne anions C 78H18- and C78H12Cl 6-, respectively. Whereas the former anion lost only four hydrogen atoms to form C78H14-, complete loss of all hydrogen and chlorine atoms was observed from the latter anion, to yield a C78- ion that has a fullerene structure which was proven by its characteristic fragmentation pattern.

Original languageEnglish
Pages (from-to)1603-1609
Number of pages7
JournalChemistry - A European Journal
Issue number5
StatePublished - 18 Feb 2005


  • Alkynes
  • Cyclophanes
  • Fullerenes
  • Macrocycles
  • Polycycles

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