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Kinetic studies on the formation of N-nitroso compounds IX. Nitrosyl acetate as a nitrosating agent

Kinetische Untersuchungen zur Bildung von N-Nitroso-Verbindungen, 9. Mitt.: Nitrosylacetat als Nitrosierungsreagens

  • Anorganische Und Physikalische Chemie
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Abstract

A study of the nitrosation of N-methylaniline and piperazine by nitrous acid in acetate buffer supports a mechanism covering both reactions, whose effective pathway depends on the relationship between the concentrations of nitrite ion, acetate ion, and nitrosatable substrate. In the case of N-methylaniline the only nitrosating agent is nitrosyl acetate, whereas in the nitrosation of piperazine the nitrous acidium ion and dinitrogen trioxide are also involved.

The results obtained seem to show that nitrosation by nitrosyl acetate is diffusion controlled. On this assumption, the equilibrium constant of the reactionAcOH + HNO2AcONO + H2O has been estimated from kinetic measurements as approximately 1.4 · 10−8 M −1. This means that the concentration of nitrosyl acetate in the medium must be extremely small, which explains the virtual impossibility of detecting it in aqueous solution except by kinetic methods.

Zusammenfassung

Die Untersuchung der Nitrosierung von N-Methylanilin und Piperazin mit Salpetriger Säure in Acetat-Puffer unterstützt einen für beide Fälle geltenden Mechanismus, dessen effektiver Ablauf von den Konzentrationsverhältnissen des Nitritions, des Acetations und der nitrosierbaren Substanz abhängt. Im Fall des N-Methylanilins ist das einzige Nitrosierungsagens Nitrosylacetat, während bei der Nitrosierung von Piperazin das Nitrit-Acidium-Ion und Distickstofftrioxid ebenfalls beteiligt sind.

Die erhaltenen Resultate scheinen zu zeigen, daß die Nitrosierung durch Nitrosylacetat diffusionskontrolliert ist. Unter dieser Annahme kann die Gleichgewichtskonstante der ReaktionAcOH + HNO2AcONO + H2O aus kinetischen Messungen zu etwa 1,4 · 10−8 M −1 abgeschätzt werden. Das bedeutet, daß die Konzentration von Nitrosylacetat im Medium extrem gering sein muß; das erklärt die praktische Undetektierbarkeit dieser Spezies in wäßriger Lösung, ausgenommen mit kinetischen Methoden.

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References

  1. Döring C., Gehlen H., Z. anorg. allg. Chem.312, 32 (1961).

    Article  Google Scholar 

  2. Hughes E. D.,Ridd J. H., J. Chem. Soc.1958, 70.

  3. Stedman G., J. Chem. Soc.1960, 1702.

  4. Casado J., Castro A., López Quintela M. A., Mosquera M., Rodríguez Prieto M. F., Monatsh. Chem.114, 647 (1983).

    Article  CAS  Google Scholar 

  5. Casado J., Mosquera M., Rivas A., Rodríguez Prieto M. F., Santaballa J. A., Computers & Chemistry7, 209 (1983).

    Article  CAS  Google Scholar 

  6. Schmid H., Maschka A., Z. Phys. Chem.49, 171 (1941).

    Google Scholar 

  7. Stedman G.,Whincup P. A. E., J. Chem. Soc.1963, 5796.

  8. Bayliss N. S., Dingle R., Watts D. W., Wilkie R. J., Aust. J. Chem.16, 933 (1963).

    Article  Google Scholar 

  9. Adby P. R., Dempster M. A. H., Introduction to Optimization Methods. London: Chapman and Hall. 1974.

    Book  Google Scholar 

  10. Casado J., Castro A., López Quintela M. A., Monatsh. Chem.112, 1221 (1981).

    Article  CAS  Google Scholar 

  11. Casado J., Castro A., Mosquera M., Rodríguez Prieto M. F., Vázquez Tato J., Ber. Bunsenges. Phys. Chem.87, 1211 (1983).

    Article  CAS  Google Scholar 

  12. Robert C. W., ed., Handbook of Chemistry and Physics. Florida: CRC Press. 1980.

    Google Scholar 

  13. Kilpi S., LIndell E., Ann. Acad. Sci. Fennicae AII,136, 3 (1967).

    Google Scholar 

  14. Bunton C. A.,Masui M., J. Chem. Soc.1960, 304.

  15. Casado J., Castro A., López Quintela M. A., Leis J. R., Mosquera M., Monatsh. Chem.114, 639 (1983).

    Article  CAS  Google Scholar 

  16. Christensen J. J.,Izatt R. M.,Wrathall D. P.,Hansen L. D., J. Chem. Soc. (A)1969, 1212.

  17. Markovits G. Y., Schwartz S. E., Newman L., Inorg. Chem.20, 445 (1981).

    Article  CAS  Google Scholar 

  18. Casado J., Castro A., López Quintela M. A., Mosquera M., Rodríguez Prieto M. F., Acta Cient. Comp.19, 93 (1982).

    CAS  Google Scholar 

  19. Ridd J. H., Adv. Phys. Org. Chem.16, 1 (1978).

    CAS  Google Scholar 

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Casado, J., Castro, A., Mosquera, M. et al. Kinetic studies on the formation of N-nitroso compounds IX. Nitrosyl acetate as a nitrosating agent. Monatsh Chem 115, 669–682 (1984). https://doi.org/10.1007/BF01120962

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  • DOI: https://doi.org/10.1007/BF01120962

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