Molecular Design of Crown Ethers. VII. Syntheses and Cation Selectivities of Unsubstituted 12- to 16-Crown-4
作者:Yu Liu、Yoshihisa Inoue、Tadao Hakushi
DOI:10.1246/bcsj.63.3044
日期:1990.10
Solvent extraction of aqueous alkali and some heavy metal picrates with the title compounds showed that, with most cations except for Li+, Na+, and Ag+, the extractability decreases monotonically as the ring size increases from 12 to 16. However, 14-crown-4 showed the highest extractability and selectivity for Li+ over the larger alkali metals, while 15-crown-4 exhibited the highest Ag+/TI+ selectivity
用标题化合物对碱水溶液和一些重金属苦味酸盐进行溶剂萃取表明,对于除 Li+、Na+ 和 Ag+ 外的大多数阳离子,随着环尺寸从 12 增加到 16,萃取率单调下降。 然而,14-crown-4与较大的碱金属相比,Li+ 的可萃取性和选择性最高,而 15-crown-4 的 Ag+/TI+ 选择性最高。