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Stability of the 15-crown-5-sodium complex in water saturated nitrobenzene

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Abstract

From extraction experiments and γ-activity measurements, the extraction constant corresponding to the equilibrium 2Na+(aq)+SrL2 2+(nb)⇆ 2NaL+(nb)+Sr2+(aq) taking place in the two-phase water-nitrobenzene system (L=15-crown-5; aq=aqueous phase, nb=nitrobenzene phase) was evaluated as logK ex(2Na+,SrL2 2+)=−1.6. Further, the stability constant of the 15-crown-5-sodium complex in nitrobenzene saturated with water was calculated: log βnb(NaL+)=7.3.

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Author notes

  1. E. Makrlík

    Present address: , 341 42, Kolinec 250, Czech Republic

Authors and Affiliations

  1. Faculty of Education, Charles University, 116 39, Prague, Czech Republic

    E. Makrlík

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

    P. Vaňura

Authors
  1. E. Makrlík
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  2. P. Vaňura
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Makrlík, E., Vaňura, P. Stability of the 15-crown-5-sodium complex in water saturated nitrobenzene. J Radioanal Nucl Chem 241, 207–209 (1999). https://doi.org/10.1007/BF02347314

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  • DOI: https://doi.org/10.1007/BF02347314

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