Molecular recognition of alkylammonium contact ion-pairs using a ditopic receptor

被引:62
作者
Mahoney, JM [1 ]
Davis, JP [1 ]
Beatty, AM [1 ]
Smith, BD [1 ]
机构
[1] Univ Notre Dame, Dept Chem & Biochem, Notre Dame, IN 46556 USA
关键词
D O I
10.1021/jo035270p
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
A ditopic, macrobicyclic receptor with adjacent anion and cation binding sites is able to distinguish between various monoalkylammonium salts by binding them as contact ion-pairs. The affinity for linear n-propylammonium chloride is at least 2 orders of magnitude greater than that for n-propylammonium. acetate, n-propylammonium p-toluenesulfonate, and branched isopropylammonium chloride. An X-ray structure of the receptor complexed with methylammonium chloride illuminates the basis of the molecular recognition.
引用
收藏
页码:9819 / 9820
页数:2
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