Large Odd-Numbered Carbon Clusters from Fullerene-Ozone Reactions

The odd-numbered carbon clusters C$_{119}$, C$_{129}$, and C$_{139}$ have been observed in the mass spectra of toluene extracts of fullerene soots and of the products of ozone-fullerene reactions. Specifically, ozone-C$_{60}$ reactions yield C$_{119}$, ozone-C$_{70}$ reactions yield C$_{139}$, and o...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 1993-06, Vol.260 (5114), p.1632-1634
Main Authors: McElvany, Stephen W., Callahan, John H., Ross, Mark M., Lamb, Lowell D., Huffman, Donald R.
Format: Article
Language:English
Subjects:
400201 - Chemical & Physicochemical Properties
Anions
Atoms
CARBON
Carbon allotropes
Cations
CHEMICAL PREPARATION
CHEMICAL REACTIONS
Chemistry
DIMERIZATION
DIMERS
ELEMENTS
Exact sciences and technology
FLUIDS
FULLERENES
GASES
Inorganic chemistry and origins of life
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
IONIZED GASES
Ions
Kinetics and mechanism of reactions
Mass spectra
Mass spectroscopy
MOLECULAR CLUSTERS
NONMETALS
OZONE
POLYMERIZATION
Soot
SYNTHESIS
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Summary:The odd-numbered carbon clusters C$_{119}$, C$_{129}$, and C$_{139}$ have been observed in the mass spectra of toluene extracts of fullerene soots and of the products of ozone-fullerene reactions. Specifically, ozone-C$_{60}$ reactions yield C$_{119}$, ozone-C$_{70}$ reactions yield C$_{139}$, and ozone-(C$_{60}$/C$_{70}$) reactions produce C$_{119}$, C$_{129}$, and C$_{139}$. These unexpected species correspond to dimers of C$_{60}$, C$_{60}$/C$_{70}$, and C$_{70}$, respectively, less one carbon atom, and are stable gas-phase ions with behavior similar to that of fullerenes. The results suggest a new route to functionalization and derivatization of fullerenes through controlled ozone-catalyzed cage-opening reactions.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.260.5114.1632