Theoretical and Experimental Chemistry

, Volume 22, Issue 6, pp 706–709 | Cite as

Influence of the conjugate anion on the parameters of ESR spectra in radical cations of sterically hindered hydroquinones

  • E. S. Klimov
  • G. A. Abakumov
  • O. Yu. Okhlobystin
Brief Communications


The reactions of hindered p-quinones and hydroquinones with inorganic, organic, and Lewis acids have been studied by ESR. The conjugate anion has a strong perturbing effect on the distribution of the spin density at the reaction center. A mechanism for the reduction of p-quinones and the oxidation of hydroquinones, which includes a step involving the formation of radical-cation salts, has been proposed. The form of the ESR spectra and the composition of the final products are greatly dependent on the ratio between the reactants, the medium, and the temperature.


Oxidation Reaction Center Radical Cation Lewis Acid Spin Density 
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.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Literature cited

  1. 1.
    V. A. Krylov, “Investigation of the state of ion pairs of stable radical-cation salts in organic solvents,” Author's abstract of dissertation for the degree of Candidate of Chemical Sciences, Kiev (1984).Google Scholar
  2. 2.
    V. D. Pokhodenko, A. A. Beloded, and V. G. Koshechko, Redox Reactions of Free Radicals [in Russian], Naukova Dumka, Kiev (1977).Google Scholar
  3. 3.
    N. M. Dobaeva, “Role of radical cations in the radical nitration of some aromatic compounds,” Author's abstract of dissertation for the degree of Candidate of Chemical Sciences, Rostov-on-Don (1982).Google Scholar
  4. 4.
    E. S. Klimov, E. V. Gassieva, and O. Yu. Okhlobystin, “Secondary processes in the poly(N-vinylcarbazole)-triphenylpyrylium perchlorate system,” Zh. Nauch. Prikl. Fot. Kinematogr., 29, No. 2, 136–137 (1984).Google Scholar

Copyright information

© Plenum Publishing Corporation 1987

Authors and Affiliations

  • E. S. Klimov
    • 1
  • G. A. Abakumov
    • 1
  • O. Yu. Okhlobystin
    • 1
  1. 1.Severo-Osetin UniversityOrdzhonikidze

Personalised recommendations