STRUCTURES AND DYNAMICS OF ENDOHEDRAL SCANDIUM METALLOFULLERENES

H. Shinohara, M. Tansho, M. Inakuma, Y. Saito, H. Sato, N. Hayashi, T. Kato, T. Hashizume and T. Sakurai
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H. Shinohara: Department of Chemistry, Nagoya University, Nagoya 464, Japan
M. Tansho: Department of Chemistry, Nagoya University, Nagoya 464, Japan
M. Inakuma: Department of Chemistry, Nagoya University, Nagoya 464, Japan
Y. Saito: School of Engineering, Mie University, Mie 514, Japan
H. Sato: School of Engineering, Mie University, Mie 514, Japan
N. Hayashi: School of Engineering, Mie University, Mie 514, Japan
T. Kato: Institute for Molecular Science, Okazaki 444, Japan
T. Hashizume: Institute for Materials Research, Tohoku University, Sendai 980, Japan
T. Sakurai: Institute for Materials Research, Tohoku University, Sendai 980, Japan

Surface Review and Letters (SRL), 1996, vol. 03, issue 01, 799-802

Abstract: The endohedral metallofullerenes, such asSc@C82,Sc2@C84, andSc3@C82, have been purified and isolated by using two-stage high-performance liquid chromatography (HPLC). The ESR spectrum of the isolatedSc3@C82exhibits a perfectly symmetric 22 hyperfined splittings with an inherent linewidth of 0.77 Gauss at 220 K, which is consistent with a unique structure that three scandium atoms are encaged triangularly within theC3visomer ofC82. In addition, we report the direct imaging of the isolated discandium fullerene(Sc2@C84)on silicon clean surfaces in an ultrahigh-vacuum environment by utilizing scanning tunneling microscopy (STM). The STM images reveal sphericalSc2@C84fullerenes, spaced 11.7 Å apart, stacked in close-packed arrays.

Date: 1996
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DOI: 10.1142/S0218625X96001443

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