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Rate constants of the reaction of cumyl peroxide radicals with 2-arylindan-1, 3-diones

  • A. B. Gagarina
  • L. M. Pisarenko
  • V. V. Moiseev
  • N. M. Émanuél'
Physical Chemistry
  • 28 Downloads

Conclusions

  1. 1.

    The rate constant K(7) of the interaction of cumyl peroxide radicals with 2-arylindan-1,3-diones (ΦH), the activation energies of these reactions (Eact), and the stoichiometric coefficients of inhibition (f) were determined.

     
  2. 2.

    The values of k7 and f are determined to a substantial degree by the nature of the substituents and their position in the 2-phenyl ring.

     
  3. 3.

    For the p-substituted 2-phenylidan-1,3-diones a correlation equation logk7/k7.st=0.28σ + 1.01 ER was established. The value of the rate constants of stripping of a H atom from the CH bonds of φH by peroxide radicals is influenced by the polarity of the substituent (σ) and the resonance factor (ER), considering the contribution of the substituents to the delocalization of the unpaired electron in the radical Ф formed.

     

Keywords

Peroxide Activation Energy Diones Unpaired Electron Correlation Equation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Literature cited

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Copyright information

© Plenum Publishing Corporation 1975

Authors and Affiliations

  • A. B. Gagarina
    • 1
    • 2
  • L. M. Pisarenko
    • 1
    • 2
  • V. V. Moiseev
    • 1
    • 2
  • N. M. Émanuél'
    • 1
    • 2
  1. 1.Institute of Chemical PhysicsAcademy of Sciences of the USSRMoscow
  2. 2.S. V. Lebedev All-Union Scientific Research Institute of Synthetic RubberVoronezh

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