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Russian Chemical Bulletin

, Volume 48, Issue 8, pp 1503–1506 | Cite as

Reductive cleavage of dichalcogenide bonds

3. Selectivity of electron exchange in diaryldichalcogenide—bispyridinium systems
  • G. V. Loukova
  • A. D. Garnovskii
Physical Chemistry

Abstract

The kinetics of reductive cleavage of the dichalcogenide bond in dimeric Schiff's bases ArEEAr (E=S, Te) induced by indirect electron transfer byin situ generated bridged bispyridinium radical cations and biradicals was studied by cyclic voltammetry. It was shown that the dependence between the apparent rate constants of intermolecular electron transfer and the electron-withdrawing properties of diaryldichalcogenides is violated. The mechanisms of homogeneous (chemical) and heterogeneous (electrochemical) reductive cleavage of diaryldichalcogenides were discussed.

Key words

bispyridinium, mediator, electrochemical catalysis dichalcogenide bond cleavage cyclic voltammetry 

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Copyright information

© Kluwer Academic/Plenum Publishers 1999

Authors and Affiliations

  • G. V. Loukova
    • 1
  • A. D. Garnovskii
    • 2
  1. 1.Institute of Problems of Chemical PhysicsRussian Academy of SciencesChernogolovkaRussian Federation
  2. 2.Research Institute of Physical and Organic ChemistryRostov State UniversityRostov-on-DonRussian Federation

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