On the formation of the fullerenes

The chemistry by which the closed-cage carbon clusters, C60 and C70, can be formed in high yield out of the chaos of condensing carbon vapour is considered. Several mechanisms for this process that have been proposed are critically discussed. The two most attractive are the ‘pentagon road’ where open sheets grow following the alternating pentagon rule and the ‘fullerene road’ where smaller fullerenes grow in small steps in a process which finds the buckminsterfullerene (C60) local deep energy minimum and to a lesser extent the C70 (D5h) minimum. A clear choice between the two does not seem possible with available information.

[1]  D. Wales,et al.  Theoretical studies of icosahedral C60 and some related species , 1986 .

[2]  S. C. O'brien,et al.  C60: Buckminsterfullerene , 1985, Nature.

[3]  M. Johnson,et al.  Fullerenes C60 and C70 in flames , 1991, Nature.

[4]  R. Stanton.  Fullerene structures and reactions: MNDO calculations , 1992 .

[5]  J. Bernholc,et al.  Isomerization of C60 fullerenes , 1992 .

[6]  Tomonari Wakabayashi,et al.  A model for the C60 and C70 growth mechanism , 1992 .

[7]  Krishnan Raghavachari,et al.  Imperfect fullerene structures: isomers of C60 , 1992 .

[8]  David E. Manolopoulos.  Comment on “Favourable structures for higher fullerenes” , 1992 .

[9]  Ming-Teh Hsu,et al.  Structures of carbon cluster ions from 3 to 60 atoms: Linears to rings to fullerenes , 1991 .

[10]  R. Smalley,et al.  Carbon ARC Generation of C 60 , 1990 .

[11]  J. Heath.  Synthesis of C60from Small Carbon Clusters: A Model Based on Experiment and Theory , 1992 .

[12]  Robert F. Curl,et al.  Photophysics of buckminsterfullerene and other carbon cluster ions , 1988 .

[13]  D. Gruen,et al.  High-Yield Synthesis, Separation, and Mass-Spectrometric Characterization of Fullerenes C60 to C266. , 1991 .

[14]  W. Krätschmer,et al.  Solid C60: a new form of carbon , 1990, Nature.

[15]  R. Smalley,et al.  Self-assembly of the fullerenes , 1992 .

[16]  Robert F. Curl,et al.  Reactivity of large carbon clusters: spheroidal carbon shells and their possible relevance to the formation and morphology of soot , 1986 .

[17]  A. Goeres,et al.  On the nucleation mechanism of effective fullerite condensation , 1991 .

[18]  S. C. O'brien,et al.  A reply to “magic numbers in Cn+ and Cn− abundance distribution” based on experimental observations , 1986 .

[19]  Z. Slanina,et al.  On relative stability reasoning for clusters of different dimensions: an illustration with the C60-C70 system , 1989 .

[20]  W. Krätschmer,et al.  The infrared and ultraviolet absorption spectra of laboratory-produced carbon dust: evidence for the presence of the C60 molecule , 1990 .

[21]  Douglas J. Klein,et al.  Reply to Comment on “Favourable structures for higher fullerenes” , 1992 .

[22]  D. Klein,et al.  C60 carbon cages , 1986 .

[23]  Kenneth S. Pitzer,et al.  LARGE MOLECULES IN CARBON VAPOR , 1959 .