ISOLATION AND CHARACTERIZATION OF AN ESR-ACTIVE LA-AT-C-82 ISOMER

被引:102
作者
YAMAMOTO, K
FUNASAKA, H
TAKAHASHI, T
AKASAKA, T
SUZUKI, T
MARUYAMA, Y
机构
[1] UNIV TSUKUBA,DEPT CHEM,TSUKUBA,IBARAKI 305,JAPAN
[2] INST MOLEC SCI,OKAZAKI,AICHI 444,JAPAN
关键词
D O I
10.1021/j100100a006
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A minor isomer of La@C-82 has been isolated with an efficient HPLC method. The isolated minor La@C-82 was well identified as a stable metallofullerene molecule. Both mass-and ESR spectra confirmed that it was La@C-82 with a 0.836-G La-139 hyperfine splitting. Visible and near-IR absorption spectra, cyclic and differential pulse voltammograms, and C-13 hyperfine splitting structures in an ESR spectrum for the sample showed features quite different from those for the major isomer of La@C-82 with a 1.159-G La-139 hyperfine splitting. We concluded that isolated species is a carbon-cage isomer of the major La@C-82.
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收藏
页码:12831 / 12833
页数:3
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