Journal
JOURNAL OF MOLECULAR STRUCTURE
Volume 838, Issue 1-3, Pages 84-88Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.molstruc.2007.01.027
Keywords
C-80 fullerene; La-2@C-80 metallofullerene; Sc3C2@C-80 metallofullerene; electron spin resonance (ESR); intra-molecular rotation
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C-80 fulleren cage can be used to realize confinement with the highest possible icosahedral (I-h) symmetry. As examples, La-2@C-80 and Sc3C2@C-80 are molecules in which metal dimer and trimer are encapsulated within the C-80 cage. They are recently purified in the substantial amount by using a high performance liquid chromatograph (HPLC), and studied by spectroscopy and X-ray diffraction. The confinement of the metal cluster with the high symmetry (I-h) cage is reflected in their specific potential of the intra-molecular rotation for the cluster. The result of electron spin resonance (ESR) measurements indicates that the intra-molecular potential is modified by the chemical modification of the C-80 cage as well as by the injection of an excess electron. (c) 2007 Elsevier B.V. All rights reserved.
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