Abstract
From extraction experiments and γ-activity measurements, the extraction constant corresponding to the equilibrium Na+(aq)+A−(aq)+L(nb)⇆NaL+(nb)+A−(nb) taking place in the two-phase water-nitrobenzene system (A−=picrate, L= dicyclohexyl-18-crown-6; aq-aqueous phase, nb=nitrobenzene phase) was evaluated as logK ex(NaL+, A−)=2.6.Further, the stability constant of the dicyclohexyl-18-crown-6-sodium complex in nitrobenzene saturated with water was calculated: αnb(NaL+)=7.8.
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Makrlík, E., Vaňura, P. Extraction of sodium picrate into nitrobenzene in the presence of dicyclohexyl-18-crown-6. J Radioanal Nucl Chem 223, 229–231 (1997). https://doi.org/10.1007/BF02223391
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DOI: https://doi.org/10.1007/BF02223391