期刊
JOURNAL OF ORGANIC CHEMISTRY
卷 68, 期 25, 页码 9819-9820出版社
AMER CHEMICAL SOC
DOI: 10.1021/jo035270p
关键词
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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.
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