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Volumn 76, Issue 6, 2011, Pages 1789-1794

Time-resolved kinetic study of the electron-transfer reactions between ring-substituted cumyloxyl radicals and alkylferrocenes. Evidence for an inner-sphere mechanism

Author keywords

[No Author keywords available]

Indexed keywords

ACETONITRILE SOLUTIONS; ELECTRON TRANSFER; ELECTRON-TRANSFER REACTIONS; ELECTRONWITHDRAWING; FERROCENES; INNERSPHERE MECHANISM; OXIDATION POTENTIALS; RING SUBSTITUENTS; TIME-RESOLVED KINETIC STUDY;

EID: 79953873112     PISSN: 00223263     EISSN: 15206904     Source Type: Journal    
DOI: 10.1021/jo102420p     Document Type: Article
Times cited : (9)

References (49)
  • 5
    • 0000708871 scopus 로고    scopus 로고
    • Brinck, T.; Lee, H.-N.; Jonsson, M. J. Phys. Chem. A 1999, 103, 7094-7104.
    • (1996) J. Phys. Chem. , vol.100 , pp. 6814-6818
    • Jonsson, M.1
  • 10
    • 0347938954 scopus 로고    scopus 로고
    • Rappoport, Z., Ed.; John Wiley & Sons: New York; Chapter 16
    • Steenken, S.; Neta, P. In The Chemistry of Phenols; Rappoport, Z., Ed.; John Wiley & Sons: New York, 2003; Chapter 16, pp 1107-1152.
    • (2003) The Chemistry of Phenols , pp. 1107-1152
    • Steenken, S.1    Neta, P.2
  • 27
    • 79953858381 scopus 로고    scopus 로고
    • note
    • ..17
  • 38
    • 79953838085 scopus 로고    scopus 로고
    • note
    • . radicals.
  • 40
    • 0001652762 scopus 로고    scopus 로고
    • Using the B971 functional, as implemented in ref 27, along with 6-31〈G(d,p) basis sets
    • Using the B971 functional: Hamprecht, F. A.; Cohen, A. J.; Tozer, D. J.; Handy, N. C. J. Chem. Phys. 1998, 109, 6264-6271 as implemented in ref 27, along with 6-31G(d,p) basis sets.
    • (1998) J. Chem. Phys. , Issue.109 , pp. 6264-6271
    • Hamprecht, F.A.1    Cohen, A.J.2    Tozer, D.J.3    Handy, N.C.4
  • 45
    • 33947689595 scopus 로고    scopus 로고
    • For a critical discussion of the role of structural effects on the ET reactions of ?-stacked systems, see: Rosokha, S. V.; Kochi, J. K. J. Am. Chem. Soc. 2007, 129, 3683-3697.
    • (2007) J. Am. Chem. Soc. , vol.129 , pp. 3683-3697
    • Rosokha, S.V.1    Kochi, J.K.2
  • 47
    • 0031587455 scopus 로고    scopus 로고
    • In ref 33, the kinetic plots of kobs vs [ArH] for unhindered donors showed an asymptotic behavior diagnostic of a preequilibrium step that precedes ET. From these plots the preequilibrium constant (KEC) and the intrinsic ET rate constant (kET) could be obtained. Linear plots of kobs vs [MenFc] have been instead obtained for the reactions of the 4-X-CumO. radicals, where the relatively strong absorption of the ferrocene donors at the laser excitation wavelength limited the study to [MenFc] ≤ 5 mM (see the Supporting Information). Accordingly, at these low concentrations the measured second order rate constant can be expressed as k2 = KECkET. On the basis of this kinetic scheme, and on the data collected in Table 1, spectral evidence for the formation of an encounter complex would require significantly higher concentrations of the ferrocene donors. See, for example: Rathore, R.; Hubig, S. M.; Kochi, J. K. J. Am. Chem. Soc. 1997, 119, 11468-11480.
    • (1997) J. Am. Chem. Soc. , Issue.119 , pp. 11468-11480
    • Rathore, R.1    Hubig, S.M.2    Kochi, J.K.3


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