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Stability of complexes of alkali metal cations with dibenzo-24-crown-8 in water saturated nitrobenzene

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Abstract

From extraction experiments and γ-activity measurements, the exchange extraction constants corresponding to the general equilibrium M+(aq)+NaL+(nb)⇄ML+(nb)+Na+(aq) taking place in the two-phase water-nitrobenzene system (M+=Li+, K+, Rb+, Cs+; L=dibenzo-24-crown-8; aq=aqueous phase, nb=nitrobenzene phase) were evaluated. Further, the stability constants of the ML+ complexes in nitrobenzene saturated with water were calculated; they were found to increase in the Cs+Rb+L+Na+ order.

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  1. E. Makrlík

    Present address: , 341 21, Kolinec 250, Czech Republic

Authors and Affiliations

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

    E. Makrlík

  2. Department of Analytical Chemistry, Prague Institute of Chemical Technology, 166 28, Prague 6, 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 complexes of alkali metal cations with dibenzo-24-crown-8 in water saturated nitrobenzene. J Radioanal Nucl Chem 241, 197–200 (1999). https://doi.org/10.1007/BF02347312

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  • DOI: https://doi.org/10.1007/BF02347312

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