Oxidation Reaction of Hydrazobenzene by Activated Catalysts of Pentadentate Schiff Base Cobalt(Ⅲ)-O2 Complexes in Methanol Solvent

메탄올 용매에서 산소 첨가된 다섯자리 Schiff Base Cobalt(Ⅲ) 착물들의 활성 촉매에 의한 Hydrazobenzene의 산화반응

  • 노윤정 (전남대학교 자연과학대학 화학과) ;
  • 박동화 (전남대학교 자연과학대학 화학과) ;
  • 조기형 (전남대학교 화학과) ;
  • 김상복 (울산대학교 자연과학대학 화학과) ;
  • 최용국 (전남대학교 자연과학대학 화학과)
  • Published : 19940400

Abstract

Homogeneous catalytic oxidation of hydrazobenzene was investigated by employing pentadentate Schiff base complexes such as [Co(II)(Sal-DPT)(H$_2$O)] and [Co(II)(Sal-DET)(H$_2$O)] in oxygen-saturated methanol solvent. The oxidation product of hydrazobenzene(H$_2$AB) was trans-azobenzene(trans-AB). The rate constants of oxidation reaction measured by UV-visible spectrophotometry were observed as $6.06{\times}10^{-3}sec^{-1}$ for [Co(II)(Sal-DPT)(H$_2$O)] and $2.50{\times}10^{-3}sec^{-1}$ for [Co(II)(Sal-DET)(H$_2$O)]. The mechanism of oxidation reaction for H$_2$AB by homogeneous activated catalysts has been proposed as following. H$_2$AB + Co(II)(L)(H$_2$O) + O$_2$ $\rightleftharpoons^K_{MeOH}Co(III)(L)O_2{\cdot}H_2AB + H_2O\longrightarrow^{k}Co(II)(L) + trans-AB + H_2O_2$ (L: Sal-DPT and Sal-DET)

Keywords

References

  1. Real Trav. Chim, pays-Bus v.86 Van Dort, H. M.;Guerson, H. J.
  2. J. Phys. Chem. v.71 Weil, J. A.;Kinnaird, J. K.
  3. J. Am. Chem. Soc. v.103 Drago, R. S.;Zombeck, A.;Cordon, B. B.;Gaul, J. H.
  4. J. Am. Chem. Soc. v.92 Hoffman, B. H.;Dimento, D. L.;Basolo, F.
  5. Chem. Rev. v.79 Basolo, F.;Jone, R. D.;Summerville, D. A.
  6. J. Am. Chem. Soc. v.88 Sacconi, W.;Bertin, I.
  7. Justus liebigs Ann. Chem. v.316 Manchot, W.;Herzog, J.
  8. J. Am. Chem. Soc. v.54 Walton, J. H.;Filson, G. W.
  9. Chem. Ber. v.101 Kaupp, G.;Russell, G. A.
  10. J. Korean Chem. Soc. v.34 Choi, K. H.;Chung, J. S.;Choi, Y. K.;Seo, S. S.
  11. J. Korean Chem. Soc. v.35 Choj, K. H.;Choi, Y. K.;Kim, S. B.;Lee, S. J.;Kim, J. S.
  12. J. Chem. Educ. v.54 Appleton, T. G.
  13. J. Korean Chem. Soc. v.36 Chjo, K. H.;Choi, Y. K.;Kim, S. B.;Park, J. K.;Park, D. H.
  14. J. Korean Chem. Soc. v.36 Chjo, K. H.;Choi, Y. K.;Kim, S. B.
  15. J. General Chem. of the U.S.S.R. v.49 Savitskii, A. V.;Nelyubin, V. I.
  16. J. Am. Chem. Soc. v.102 Drago, R. S.;Cannady, J. P.;Leslie, K. A.
  17. J. Org. Chem. v.35 Tomaja, D. H.;Vogt, L. H.;Wirth, J. G.
  18. J. Mol. Catal v.41 Kothari, V. M.;Tazuma, J. J.
  19. J. Chem. Soc. (A) Floriani, C.;Calderazzo, F.
  20. Bull. Chem. Soc. Japan v.42 Misono, A.;Koda, S.
  21. Inorg. Chim. Acta. v.5 Busetto, C.;Neri, C.;Palladino, N.
  22. Chem. Comm. Dimente, D.;Hoffman, B. M.;Basolo, F.
  23. Inorg. Nucl. Chem. v.35 Ochiai, E. I.
  24. J. Am. Chem. Soc. v.89 Mori, M.;Weil, J. A.
  25. J. Org. Chem. v.34 Vogt, L. H.;Wirth, J. G.;Finkbeimer, H. L.
  26. Inorg. Chem. v.68 Calvin, M.;Berkelew, C. H.