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Buckminsterfullerene, c60, was prepared in gram quantities by contact-arc vaporization of a graphite rod in a 100-Torr atinospherc of helium. followed by extraction of the resultant graphitic soot with toluene. The dominance of C , in this extract was verified by mass, FTIR. and NMR spectroscopy. The molecule was successfully hydrogenated to C6,H,, via a Birch reduction and dehydrogenated back to bare c 6 0 by treatment with DDQ reagent. Cyclic voltammetry of C60 in methylene chloride rcvcaled highly reversible formation of at least two stable anionic forms of c 6 0 in solution. A broad new class of thcsc fulleride and fulleronium ions is anticipated, both with the internal cavity empty and with any one of a large number of elcmcnts inside, thus providing a means of fine-tuning the chemical, optical, and redox properties.

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