Isolation and characterization of two Pr@C82 isomers

被引:78
作者
Akasaka, T [1 ]
Okubo, S
Kondo, M
Maeda, Y
Wakahara, T
Kato, T
Suzuki, T
Yamamoto, K
Kobayashi, K
Nagase, S
机构
[1] Niigata Univ, Grad Sch Sci & Technol, Niigata 9502181, Japan
[2] Inst Mol Sci, Okazaki, Aichi 4448585, Japan
[3] Power Reactor & Nucl Fuel Dev, Tokai, Ibaraki 3191100, Japan
[4] Tokyo Metropolitan Univ, Grad Sch Sci, Dept Chem, Tokyo 1920397, Japan
关键词
D O I
10.1016/S0009-2614(00)00120-2
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
The second isomer of Pr@C-82 (Pr@C-82-II) has been isolated by a two-step HPLC method, separately from the known major isomer (Pr@C-82-I). Visible and near-IR absorption spectra, as well as cyclic and differential pulse voltammograms show that the characteristic features of Pr@C-82-II are significantly different from those of Pr@C-82-I. The absorption peaks of Pr@C-82-II have blue-shifts and the redox potentials have negative shifts, relative to those of Pr@C-82-I. Chemical derivatization of both isomers with disilirane have also been achieved. (C) 2000 Published by Elsevier Science B.V. All rights reserved.
引用
收藏
页码:153 / 156
页数:4
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