High-yield preparation of dimetallofullerenes by the improved DC arc discharge method

被引：4

作者：

Lian, YF

Shi, ZJ

Zhou, XH

Gu, ZN ^{[1
]}

Xiao, HZ

Wang, JZ

机构：

[1] Beijing Inst Microchem, Beijing 100091, Peoples R China

[2] Peking Univ, Dept Chem, Beijing 100871, Peoples R China

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2000年 / 61卷 / 07期

基金：

中国国家自然科学基金;

关键词：

fullerenes; dimetallofullerene; endohedral; DC arc discharge;

D O I：

10.1016/S0022-3697(99)00359-5

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The soot containing yttrium metallofullerenes was prepared by DC are discharge method under novel conditions including the use of YNi2 alloy, high helium static pressure and high Y:C ratio and extracted by CS2. The extract was enriched by column liquid chromatography on silica gel with a mixed solvent of 85% petroleum ether and 15% xylene, xylene and carbon disulfide as successive eluents. Mass spectra show that dimetallofullerenes with nearly no detectable monometallofullerenes were obtained in bulk quantities. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：1037 / 1040

页数：4

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