Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA.
J Am Chem Soc. 2010 Oct 6;132(39):13572-4. doi: 10.1021/ja1035607.
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.
一种能够从水溶液中提取铀酰离子的三足受体已被开发出来。在铀酰浓度为 400ppm 的情况下，所开发的配体将约 59%的铀酰离子萃取到有机相中。该新型受体具有三个羧酸盐，它们通过双齿相互作用汇聚到铀酰离子上。溶液研究表明，在 NMR 时间尺度上，羧酸盐的交换速度较慢。配合物的晶体结构表明，羧酸盐与铀酰离子配位，而酰胺与铀酰的一个氧氧原子形成氢键。配体的疏水性涂层及其刚性有助于其从稀水溶液中选择性地提取铀酰离子。
