ChemInform Abstract Quantitative solvent extraction studies and determination of the extraction equilibrium constants show that dicationic complexes in the solution phase are obtained with the ligand-cation combinations: 18-crown-6 with Li+; 24-crown-8 with Li+, Na+, K+; dibenzo-24-crown-8 with Na+, K+, Ag+, Sr2+. The facile formation of the dicationic complexes is attributed to the effective charge-shielding coordination by the bulky, lipophilic picrate anions in the contact ion pair complex extracted.

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ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.