The existence of a strong correlation between ligand architecture and metal ion binding selectivity is demonstrated through large differences in the separation efficiencies found in the selective extraction of Am3+ from an acidic mixture of Am3+ and Eu3+ for three new tetrapodal hexadentate ligands containing four 2-pyrazinylmethyl groups attached to three different diamino spacers.
在从 Am3+ 和 Eu3+ 的酸性混合物中选择性萃取 Am3+ 的过程中,发现三种新的四元六齿
配体的分离效率存在很大差异,这表明
配体结构与
金属离子结合选择性之间存在密切联系。