Conclusions
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1.
The complexing constants of eosin (ZD=−2) and zinc porphyrins (ZD=+4, −4) with charged viologens (ZA=0 to +4) with different ionic strengths were determined.
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2.
It was shown that ΔG of complexing can be considered the additive sum of the ΔG of a donor-acceptor π interaction which is constant in the dye-viologens series and the ΔG of the electrostatic interaction which changes as a function of the charges of the reactants.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 2, pp. 276–280, February, 1989.
We would like to thank V. M. Berdnikov for his useful discussion.
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Maier, V.É., Kuz'min, V.A., Levin, P.P. et al. Complexing of zinc and eosin porphyrins with viologens in aqueous solutions. Russ Chem Bull 38, 231–235 (1989). https://doi.org/10.1007/BF00953602
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DOI: https://doi.org/10.1007/BF00953602