Abstract
From extraction experiments and γ-activity measurements, the exchange extraction constants corresponding to the equilibrium M +(aq) + 1 · Na+ (nb) ⇄ 1 · M + (nb) + Na+ (aq) taking place in the two-phase water-nitrobenzene system (M + = Li+, H3O+, NH4 +, Ag+, K+, Rb+, Tl+, Cs+; 1 = tetraphenyl p-tert-butylcalix[4]arene tetraketone; aq = aqueous phase, nb = nitrobenzene phase) were evaluated. Moreover, the stability constants of the 1 · M + complexes in water saturated nitrobenzene were calculated; they were found to increase in the order Cs+ < Rb+ < Tl+ < K+ < NH4 + < Ag+ < H3O+ < Li+.
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Correspondence: Emanuel Makrlík, Faculty of Applied Sciences, University of West Bohemia, Pilsen, Czech Republic.
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Makrlík, E., Budka, J., Vaňura, P. et al. Solvent extraction of univalent cations into nitrobenzene using sodium dicarbollylcobaltate and tetraphenyl p-tert-butylcalix[4]arene tetraketone. Monatsh Chem 139, 1349–1351 (2008). https://doi.org/10.1007/s00706-008-0929-x
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DOI: https://doi.org/10.1007/s00706-008-0929-x