92144-77-9Relevant academic research and scientific papers
Molecular design of crown ethers. VII.1 syntheses and cation selectivities of unsubstituted 12- To 16-crown-4
Liu, Yu,Inoue, Yoshihisa,Hakushi, Tadao
, p. 3044 - 3046 (1990)
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+/Tl+ selectivity.
