S. Solodovnikov, B. Tumanskii, V. V. Bashilov, V. I. Sokolov, S. Lebedkin, W. Krätschmer
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Dynamics of the Metal Ion in M@C82 (M=La, Y) Metallofullerenes Studied by Temperature Effects in Electron Spin Resonance Spectra
Abstract ESR spectra of M@C82 (M=La, Y) metallofullerene solutions show the monotonic decrease of the metal ion hyperfine coupling constant between −70 and +260°C and changes in the lineshape of Y@C82 signals above 80°C, which were attributed to anharmonic metal-to-cage vibrations and to the motion of Y between different chemisorption sites in a C82 cage, respectively.
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