Isolation, characterization, and theoretical study of La2@C78

被引：76
作者：
Cao, BP
Wakahara, T
Tsuchiya, T
Kondo, M
Maeda, Y
Rahman, GMA
Akasaka, T [1 ]
Kobayashi, K
Nagase, S
Yamamoto, K
机构：
[1] Univ Tsukuba, Ctr Tsukuba Adv Res Alliance, Tsukuba, Ibaraki 3058577, Japan
[2] Japan Grad Sch Sci & Technol, Niigata 9502181, Japan
[3] Inst Mol Sci, Okazaki, Aichi 4448585, Japan
[4] Japan Nucl Fuel Cycle Dev Inst, Tokai, Ibaraki 3191100, Japan
来源：
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2004年 / 126卷 / 30期
关键词：
D O I：
10.1021/ja048599g
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A new metallofullerene, La2@C78, has been synthesized by DC arc discharge method, isolated by high-performance liquid chromatography, and characterized by laser desorption time-of-flight mass spectrometry, UV-vis-NIR absorption, differential pulse voltammetry, 13C NMR spectroscopy, and theoretical calculations. The La2@C78/CS2 solution is dark violet and presents several characteristic absorption features at 647, 561, 533, and 386 nm, with an onset around 1000 nm. With respect to empty D3-C78, the capability of La2@C78 as an electron acceptor or donor is stronger. Addition of 1,1,2,2-tetrakis(2,4,6-trimethylphenyl)-1,2-disirane to La2@C78 photochemically, as well as thermally, affords bis- and mono-adducts. Theoretical studies and 13C NMR spectroscopic analysis of La2@C78 indicate that it possesses a D3h-C78 cage (78:5). Copyright © 2004 American Chemical Society.
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页码：9164 / 9165
页数：2
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