Abstract
Liquid-Liquid-Extraction of Metal Ions with Lariat Ethers. Lariat ethers of various ring size and substitution are synthesized and characterized by physical data and chemical analysis. The extraction behaviour of the crown compounds towards Na+, K+, Cs+ and Ag+ in a picric acid solution has been investigated. The extraction contants for 1:1 and 1:2 complexes are determined using the equilibrium distribution data. The results show that the flexible side chain in the investigated compounds has in no case a positive effect on the metal picrate extraction.
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