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C36, a new carbon solid


Under appropriate non-equilibrium growth conditions, carbon atoms form relatively stable hollow clusters of well-defined mass number1, collectively known as fullerenes. The mass production, purification and condensation of such clusters into a molecular solid is generally essential to full experimental characterization: the initial discovery2 of C60, for example, had to await a bulk synthesis method3 six years later before detailed characterization of the molecule was possible. Gas-phase experiments1,4,5 have indicated the existence of a wide range of fullerene clusters, but beyond C60 only a few pure fullerene solids have been obtained6, most notably C70. Low-mass fullerenes are of particular interest because their high curvature and increased strain energy owing to adjacent pentagonal rings could lead to solids with unusual intermolecular bonding and electronic properties. Here we report the synthesis of the solid form of C36 by the arc-discharge method3. We have developed purification methods that separate C36 from amorphous carbon and other fullerenes, to yield saturated solutions, thin films and polycrystalline powders of the pure solid form. Solid-state NMR measurements suggest that the molecule has D6h symmetry, and electron-diffraction patterns are consistent with a tightly bound molecular solid with an intermolecular spacing of 6.68 Å. We observe large increases in the electrical conductivity of the solid on doping with alkali metals.

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Figure 1: Mass spectra of films prepared in this study.
Figure 2: Predicted and observed NMR spectra of C36.
Figure 3: Electron-diffraction pattern of C36 crystallite.
Figure 4


  1. Billups, W. E. & Ciufolini, M. A. (eds) Buckminsterfullerenes(VCH, New York, 1993).

    Google Scholar 

  2. Kroto, H. W., Heath, J. R., O'Brien, S. C., Curl, R. F. & Smalley, R. E. C60: buckminsterfullerene. Nature 318, 162–163 (1985).

    Article  ADS  CAS  Google Scholar 

  3. Kratschmer, W., Lamb, L. D., Fostiropoulos, K. & Huffman, D. R. Solid C60: a new form of carbon. Nature 347, 354–358 (1990).

    Article  ADS  Google Scholar 

  4. Rohlfing, C. & Kaldor, J. Production and characterization of supersonic carbon cluster beams. Chem. Phys. 81, 3322–3330 (1984).

    ADS  CAS  Google Scholar 

  5. O'Brien, S. C., Heath, J. R., Curl, R. F. & Smalley, R. E. Photophysics of buckminsterfullerene and other carbon cluster ions. J. Chem. Phys. 88, 220–230 (1988).

    Article  ADS  CAS  Google Scholar 

  6. Diederich, F. & Whetten, R. L. Beyond C60: the higher fullerenes. Acc. Chem. Res. 25, 119–126 (1992).

    Article  CAS  Google Scholar 

  7. Côté, M., Grossman, J. C., Louie, S. G. & Cohen, M. L. Electronic and structural properties of molecular C36. Bull. Am. Phys. Soc. 42, 270 (1997).

    Google Scholar 

  8. Scott, L. T., Bratcher, M. S. & Hagen, S. Synthesis and characterization of a C36subunit. J. Am. Chem. Soc. 118, 8743–8744 (1996).

    Article  CAS  Google Scholar 

  9. Fowler, P. W. & Manolopoulos, D. E. An Atlas of Fullerenes(Clarendon, Oxford, 1995).

    Google Scholar 

  10. Grossman, J. C., Côté, M., Louie, S. G. & Cohen, M. L. Prediction of superconductivity in solid C36. Bull. Am. Phys. Soc. 42, 1576 (1997).

    Google Scholar 

  11. Grossman, J. C., Côté, M., Louie, S. G. & Cohen, M. L. Electronic and structural properties of molecular C36. Chem. Phys. Lett. 284, 344–349 (1998).

    Article  ADS  CAS  Google Scholar 

  12. Hebard, A. F. et al. Superconductivity at 18 K in potassium doped C60. Nature 350, 600–601 (1991).

    Article  ADS  CAS  Google Scholar 

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The study of C36 arose out of a joint experimental/theoretical collaboration with M.L. Cohen, M. Côté, J. C. Grossman and S. G. Lluie, all of whom we thank for discussions and interactions. We also thank J. Burward-Hoy for contributing to the initial stages of this work, T. Wagberg and M. C. Martin for providing the infrared spectrum, A. Pines for discussions and use of his NMR spectrometer, and J. O'Lear for performing the mass spectroscopy runs on the Micromass, Inc. equipment. This work was supported in part by the US Department of Energy, the US Office of Naval Research, and the US NSF.

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Correspondence to A. Zettl.

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Piskoti, C., Yarger, J. & Zettl, A. C36, a new carbon solid. Nature 393, 771–774 (1998).

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