Abstract
A POLAROGRAPHIC study of the tropylium ion (C7H7+) in unbuffered media1 did not permit any quantitative interpretation of the acid-base phenomena at the surface of the mercury dropping electrode. We therefore followed the reduction of the tropylium ion in well-buffered media. At concentrations lower than about 0.00015 M one irreversible reduction wave was observed. The height of this wave decreased with increasing pH in the form of a dissociation curve (Fig. 2) with pK′ = 5.64 at t 1 = 3.3 sec. The kinetic current at higher pH values is limited by the rate of formation of the reducible tropylium cation from electro-inactive tropyl alcohol, which is present in the solution and is brought by diffusion to the surface of the mercury electrode.
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References
Volpin, M. E., Zdanov, S. I., and Kursanov, D. N., Doklady Akad. Nauk S.S.S.R., 112, 264 (1957).
Doering, W. E. von, and Knox, L. H., J. Amer. Chem. Soc., 79, 352 (1957).
Hanuš, V., Chem. Zvesti, 8, 702 (1954).
Koutecký, J., Chem. listy, 47, 323 (1953); Collect. Czechoslov. Chem. Commun., 18, 597 (1953).
Brdička, R., Collect. Czechoslov. Chem. Commun., 12, 522 (1947).
Pauling, L., “The Nature of the Chemical Bond” (Cornell University Press, 1948).
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ZUMAN, P., CHODKOWSKI, J., POTĚŠILOVÁ, H. et al. Polarographic Study of Acid-Base Reactions of the Tropylium Ion. Nature 182, 1535–1536 (1958). https://doi.org/10.1038/1821535a0
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DOI: https://doi.org/10.1038/1821535a0
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