Hydrogen bonds seal single-molecule capsules

被引:104
作者
Atwood, JL [1 ]
Szumna, A [1 ]
机构
[1] Univ Missouri, Dept Chem, Columbia, MO 65211 USA
关键词
D O I
10.1021/ja027191l
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
In the presence of methanol the tetrakis(benzoxazines) complex tetramethylammonium cation within the cavity, and the cavity is completely sealed by two intramolecular hydrogen bonds between amide groups. The Cl- anion is found external to the cavity. In CHCl3, Me4N+ is complexed within the cavity, but the Cl- anion acts as a stopper in the upper rim of the cavity, hydrogen-bonded to the amide groups. The solution results are supported by single-crystal X-ray structural studies of both the single-molecule molecular capsules, and those stoppered by Cl-. Copyright © 2002 American Chemical Society.
引用
收藏
页码:10646 / 10647
页数:2
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