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Crystal Structure of Endohedral Metallofullerene La@C82

Published online by Cambridge University Press:  22 February 2011

H. Suematsu ,
Y. Murakami ,
H. Kawata ,
Y. Fujii ,
N. Hamaya ,
O. Shimomura ,
K. Kikuchi ,
Y. Achiba  and
I. Ikemoto
H. Suematsu
Affiliation:
Department of Physics, University of Tokyo, Bunkyoku, Tokyo 113, Japan
Y. Murakami
Affiliation:
Department of Physics, University of Tokyo, Bunkyoku, Tokyo 113, Japan
H. Kawata
Affiliation:
Department of Physics, University of Tokyo, Bunkyoku, Tokyo 113, Japan
Y. Fujii
Affiliation:
Institute for Solid State Physics, Univ. Tokyo, Minatoku, Tokyo 106
N. Hamaya
Affiliation:
Depatment of Physics, Ochanomizu University;
O. Shimomura
Affiliation:
Photon Factory, The National Laboratory for High Energy Physisc, Tsukuba, Ibaraki 305
K. Kikuchi
Affiliation:
Department of Chemistry, Tokyo Metropolitan University, Hachioji, Tokyo 192-03
Y. Achiba
Affiliation:
Department of Chemistry, Tokyo Metropolitan University, Hachioji, Tokyo 192-03
I. Ikemoto
Affiliation:
Department of Chemistry, Tokyo Metropolitan University, Hachioji, Tokyo 192-03
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Abstract

Since the success of synthesis the molecular structure of the endohedral metallofullerene is a most interesting subject in relation to the electronic state of metal and carbon cage. Highquality crystals of endohedral metallofullerene La@C82 have been synthesized by the arc discharge and HPLC method. The x-ray powder diffraction and the precession photograph of a tiny single crystal have revealed the cubic structure with the space group I43d and the lattice constant ao = 25.72 ± 0.007 Å at room temperature. The structure is characterized by the molecular arrangement in which the molecules align in the [111] direction with the molecular axis orienting in the same [111] direction; this structure suggests the existence of a dipole interaction between the molecules. The metal position in the cage is also discussed on the basis of an ellipsoidal model of molecule.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 349: Symposium T – Novel Forms of Carbon II , 1994 , 213
Copyright
Copyright © Materials Research Society 1994

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References

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