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Stability of the valinomycin-rubidium complex in water saturated nitrobenzene

  • M. Daňková
  • E. Makrlík
  • P. Vaňura
Letter to the Editor

Abstract

From the extraction experiments and γ-activity measurements, the extraction constant corresponding to the Rb+(aq)+CsL+(nb)⇆RbL+(nb)+Cs+(aq) equilibrium in the two-phase water-nitrobenzene system (L=valinomycin; aq=aqueous phase, nb=nitrobenzene phase) was evaluated in the form logKex (Rb+, CsL+)=0.9. Further, the stability constant of the valinomycin-rubidium complex in nitrobenzene saturated with water was calculated as log βnb(RbL+)=11.7.

Keywords

Physical Chemistry Inorganic Chemistry Aqueous Phase Stability Constant Nitrobenzene 
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References

  1. 1.
    Yu. A. Ovchinnikov, V. T. Ivanov, A. M. Shkrob, Membrane Active Complexones, Elsevier, Amsterdam, 1974.Google Scholar
  2. 2.
    P. Vanýsek, W. Ruth, J. Koryta, J. Electroanal. Chem., 148 (1983) 117.Google Scholar
  3. 3.
    J. Koryta, Yu. N. Kozlov, M. Skalický, J. Electroanal. Chem., 234 (1987) 355.Google Scholar
  4. 4.
    E. Makrlík, P. Vaňura, J. Radioanal. Nucl. Chem., 214 (1996) 339.Google Scholar
  5. 5.
    J. Rais, Collect. Czech. Chem. Commun., 36 (1971) 3253.Google Scholar
  6. 6.
    J. Rais, P. Selucký, M. Kyrš, J. Inorg. Nucl. Chem., 38 (1976) 1376.Google Scholar
  7. 7.
    P. R. Danesi, H. Meider-Goričon, R. Chiarizia, G. Scibona, J. Inorg. Nucl. Chem., 37 (1975) 1479.Google Scholar
  8. 8.
    E. Makrlík, J. Hálová, M. Kyrš, Collect. Czech. Chem. Commun., 49 (1984) 39.Google Scholar
  9. 9.
    I. M. Kolthoff, Anal. Chem., 51 (1979) 1R.Google Scholar
  10. 10.
    T. Funck, F. Eggers, E. Grell, Chimia, 26 (1972) 637.Google Scholar
  11. 11.
    A. Hofmanová, J. Koryta, M. Brezina, T. H. Ryan, K. Angelis, Inorg. Chim. Acta, 37 (1979) 135.Google Scholar

Copyright information

© Akadémiai Kiadó 1997

Authors and Affiliations

  • M. Daňková
    • 1
  • E. Makrlík
    • 2
  • P. Vaňura
    • 3
  1. 1.Kolín IICzech Republik
  2. 2.Faculty of EducationCharles UniversityPrague 1Czech Republik
  3. 3.Prague Institute of Chemical TechnologyPragueCzech Republik

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