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Solvent extraction of barium picrate by p-tert-butylcalix[4]arene-tetrakis (N,N-diethylacetamide)

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Summary

From extraction experiments andg-activity measurements, the extraction constant of the Ba2+(aq)+2A-(aq)+L(nb)ÛBaL2+(nb)+2A-(nb) equilibrium in the two-phase water-nitrobenzene system (L = p-tert-butylcalix[4]arene-tetrakis (N,N-diethylacetamide); aq = aqueous phase, nb = nitrobenzene phase) was evaluated as logK ex(BaL2+,2A-)=6.5±0.1. Furthermore, the stability constant of the p-tert -butylcalix[4]arene-tetrakis (N,N-diethylacetamide)̵barium complex in nitrobenzene saturated with water was calculated for at 25 °C as logb nb(BaL2+)=15.4±0.1.

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Authors and Affiliations

  1. Faculty of Applied Sciences, University of West Bohemia, Husova 11, 306 14 Pilsen, Czech Republic

    E. Makrlík

  2. Prague Institute of Chemical Technology, Technická 5, 166 28 Prague 6, Czech Republic

    P. Vaňura

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  1. E. Makrlík
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  2. P. Vaňura
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Makrlík, E., Vaňura, P. Solvent extraction of barium picrate by p-tert-butylcalix[4]arene-tetrakis (N,N-diethylacetamide). J Radioanal Nucl Chem 267, 699–701 (2006). https://doi.org/10.1007/s10967-006-0107-8

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  • DOI: https://doi.org/10.1007/s10967-006-0107-8

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