Reactions of Ion — Radicals and Solvated Electrons

  • E. T. Denisov


Ion-radicals are formed by the action of alkali metals on aromatic compounds in aprotonic solvents. The ion-radicals exist in solution and react in the form of free particles and in the form of ion pairs, for example, C10H8 -Na+ . An aromatic ion-radical will rapidly exchange an electron with an aromatic molecule. The rate constants for exchange between an ion-radical and a molecule of identical structure are in the range of 106 to 108 liter/mole·sec. The electron exchange rate is measured by EPR on the basis of absorption band broadening in the EPR spectrum (see Chapter IV, §2). Ion-radicals can bring about the anionic polymerization of unsaturated compounds, acting as initiator-ions and entering into a reaction of radical substitution, for example
$${C_{10}}H_8^{{\text{ }} - {\text{ }}}{\text{ }} + {\text{ }}ROH \to {C_{10}}{H_9}\cdot{\text{ }} + {\text{ }}R{O^{{\text{ }} - {\text{ }}}}$$
Rate constants for reactions of ion-radicals with molecules are listed in Table 109.


Anionic Polymerization Aprotonic Solvent Room Temperature Compound 
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Copyright information

© IFI/Plenum Data Company 1974

Authors and Affiliations

  • E. T. Denisov
    • 1
  1. 1.Institute of Chemical PhysicsMoscowUSSR

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