Stability of the valinomycin - strontium complex in water saturated nitrobenzene
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From extraction experiments and<span style='font-size:12.0pt;font-family:Symbol; mso-bidi-font-family:Symbol'>g-activity measurements, the extraction constant corresponding to the equilibrium Ba2+(aq)+SrL2+(nb)ÛBaL2+(nb)+Sr2+(aq) taking place in the two-phase water-nitrobenzene system (L= valinomycin; aq= aqueous phase,</o:p>nb= nitrobenzene phase) was evaluated as logK ex(Ba2+, SrL2+)=1.3. Furthermore, the stability constant of the valinomycin-strontium complex in nitrobenzene saturated with water was calculated for a temperature of 25 °C: logb nb(SrL2+)=5.4.
KeywordsPhysical Chemistry Inorganic Chemistry Aqueous Phase Strontium Stability Constant
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