Dynamics of the Metal Ion in M@C82 (M=La, Y) Metallofullerenes Studied by Temperature Effects in Electron Spin Resonance Spectra

S. Solodovnikov, B. Tumanskii, V. V. Bashilov, V. I. Sokolov, S. Lebedkin, W. Krätschmer
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引用次数: 1

Abstract

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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电子自旋共振光谱温度效应研究M@C82 (M=La, Y)金属富勒烯中金属离子动力学
M@C82 (M=La, Y)金属富勒烯溶液的ESR谱显示,在- 70 ~ +260℃之间,金属离子超细耦合常数单调降低,在80℃以上,Y@C82信号的线形发生变化,这分别归因于C82笼中金属与笼间的非谐振动和Y在不同化学吸附位点之间的运动。
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