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Kinetics and mechanism of the reduction of diaquatetrakis (2,2′-bipyridine)-μ-oxo diruthenium(III) by ascorbic acid

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Summary

The kinetics of the oxidation of ascorbic acid by diaquatetrakis (2,2′-bipyridine)-μ-oxo diruthenium(III) in aqueous HClO4 were investigated. The dependence of the second order rate constantk 2 on [H+] is given by k 2=a+b[H+]−, indicating that both the undissociated form and the monoanion of ascorbic acid are reactive. Marcus theory was used to estimate the redox potential for the RuIII-O-RuIII/RuIII-O-RuII couple and a feasible mechanism has been proposed to explain the results.

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References

  1. G. G. Birch and K. Parket,Vitamin C - Recent Aspects of its Physiological and Technological Importance, Applied Science, London, 1974.

    Google Scholar 

  2. A. Haim and M. J. Akhtar,Inorg. Chem.,27, 1608 (1988) and refs therein.

    Google Scholar 

  3. W. D. Drury and J. M. DeKorte,Inorg. Chem.,22, 121 (1983).

    Google Scholar 

  4. A. Agrawal, S. K. Mishra and P. D. Sharma,Transition Met. Chem.,17, 343 (1992).

    Google Scholar 

  5. M. Sharma, A. Agrawal, S. K. Mishra and P. D. Sharma,Transition Met. Chem.,17, 181 (1992).

    Google Scholar 

  6. M. Kimura, M. Yamamoto and S. Yamabe,J. Chem. Soc., Dalton Trans., 423 (1982) and refs therein.

  7. C. Creutz,Inorg. Chem.,20, 4452 (1981).

    Google Scholar 

  8. E. Pelizetti, E. Mentasti and E. Pramauro,Inorg. Chem.,15, 2898 (1976);17, 1181 (1978).

    Google Scholar 

  9. S. K. Saha, M. C. Ghosh and E. S. Gould,Inorg. Chem.,31, 5439 (1992).

    Google Scholar 

  10. S. K. Ghosh and E. S. Gould,Inorg. Chem.,28, 1948 (1989).

    Google Scholar 

  11. A. Agrawal, I. Rao, C. Gupta, S. K. Mishra and P. D. Sharma in K. S. Gupta (Ed.),Topics in Chemistry Series, RBSA Publishers, Jaipur, 1991, p. 315;Rasayan Samiksha Rev.,12 (1989).

    Google Scholar 

  12. S. W. Gersten, G. J. Samuels and T. J. Meyer,J. Am. Chem. Soc.,104, 4029 (1982).

    Google Scholar 

  13. C. V. Krishnan, C. Cruetz, D. Mahajan, H. Schwarz and M. Sutin,Isr. J. Chem.,22, 98 (1982).

    Google Scholar 

  14. J. A. Gilbert, D. S. Eggleston, W. R. Murphy, D. A. Geselowitz, S. W. Gersten, D. J. Hodgson and T. J. Meyer,J. Am. Chem. Soc.,107, 3855 (1985).

    Google Scholar 

  15. G. A. Ayoko, J. F. Iyun and A. T. Ekubo,Transition Met. Chem.,18, 6 (1993).

    Google Scholar 

  16. N. R. Davies and T. L. Mullins,Aust. J. Chem.,20, 657 (1967).

    Google Scholar 

  17. S. S. Gupta and Y. K. Gupta,Inorg. Chem.,20, 1748 (1981).

    Google Scholar 

  18. D. H. Macarmey and N. Sutin,Inorg. Chem. Acta,74, 221 (1983).

    Google Scholar 

  19. C.-M. Che, W.-T. Tang, W.-O. Lee, K.-Y. Wong and T.-C. Lau,J. Chem. Soc., Dalton Trans., 1551 (1992).

  20. S. A. Adeyemi, A. Doveetoglou, A. R. Giadalupe and T. J. Meyer,Inorg. Chem.,31, 1375 (1992).

    Google Scholar 

  21. R. A. Marcus,J. Phys. Chem.,67, 853 (1963);Electrochim. Acta,13, 995 (1968).

    Google Scholar 

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Authors and Affiliations

  1. Department of Chemistry, Ahmadu Bello University, Zaria, Nigeria

    J. Femi Iyun

  2. Department of Chemistry, University of Papua New Guinea, Box 320, University Post Office, Papua New Guinea

    G. Adefikayo Ayoko

  3. Department of Chemistry, Abubakar Tafawa Balewa University, Bauchi, Nigeria

    Habiba M. Lawal

Authors
  1. J. Femi Iyun
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  2. G. Adefikayo Ayoko
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  3. Habiba M. Lawal
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Iyun, J.F., Ayoko, G.A. & Lawal, H.M. Kinetics and mechanism of the reduction of diaquatetrakis (2,2′-bipyridine)-μ-oxo diruthenium(III) by ascorbic acid. Transition Met Chem 20, 30–33 (1995). https://doi.org/10.1007/BF00135398

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  • DOI: https://doi.org/10.1007/BF00135398

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