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Selective Recognition and Extraction of the Uranyl Ion
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2010-10-06 , DOI: 10.1021/ja1035607 Aaron C. Sather 1 , Orion B. Berryman 1 , Julius Rebek 1
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2010-10-06 , DOI: 10.1021/ja1035607 Aaron C. Sather 1 , Orion B. Berryman 1 , Julius Rebek 1
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A tripodal receptor capable of extracting uranyl ion from aqueous solutions has been developed. At a uranyl concentration of 400 ppm, the developed ligand extracts ∼59% of the uranyl ion into the organic phase. The new receptor features three carboxylates that converge on the uranyl ion through bidentate interactions. Solution studies reveal slow exchange of the carboxylates on the NMR time scale. The crystal structure of the complex shows that the carboxylates coordinate to uranyl ion while the amides hydrogen bond to one of the uranyl oxo-oxygen atoms. The hydrophobic coating of the ligand and its rigidity contribute to its ability to selectively extract uranyl ion from dilute aqueous solutions.
中文翻译：
铀酰离子的选择性识别和提取
已经开发出能够从水溶液中提取铀酰离子的三足受体。在铀酰浓度为 400 ppm 时，开发的配体将约 59% 的铀酰离子提取到有机相中。新受体具有三个羧酸盐，它们通过双齿相互作用会聚在铀酰离子上。溶液研究揭示了 NMR 时间尺度上羧酸盐的缓慢交换。该配合物的晶体结构表明，羧酸盐与铀酰离子配位，而酰胺与铀酰氧-氧原子之一形成氢键。配体的疏水涂层及其刚性有助于其从稀水溶液中选择性提取铀酰离子的能力。
更新日期：2010-10-06
中文翻译：
铀酰离子的选择性识别和提取
已经开发出能够从水溶液中提取铀酰离子的三足受体。在铀酰浓度为 400 ppm 时，开发的配体将约 59% 的铀酰离子提取到有机相中。新受体具有三个羧酸盐，它们通过双齿相互作用会聚在铀酰离子上。溶液研究揭示了 NMR 时间尺度上羧酸盐的缓慢交换。该配合物的晶体结构表明，羧酸盐与铀酰离子配位，而酰胺与铀酰氧-氧原子之一形成氢键。配体的疏水涂层及其刚性有助于其从稀水溶液中选择性提取铀酰离子的能力。
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