The Chemically Induced Dynamic Electron Polarization (CIDEP Effect)

  • Claude Richard
  • Pierre Granger
Conference paper
Part of the NMR Basic Principles and Progress / NMR Grundlagen und Fortschritte book series (NMR, volume 8)


It is well known that photolysis of molecules produces radicals which give an electron spin resonance spectrum (ESR). The theory of this effect may be found elsewhere [1a, 1d, 1i]. As for the CIDNP effect in NMR radical chemical reactions may give rise to a similar effect in ESR spectra. The first observation of this effect [170a, 170b] appeared before CIDNP, but was not developed, and ESR parameters were determined only for the identification of the different radicals. However, the anomalous behavior of the radicals, especially H atoms, was reported. The first work cited as CIDEP was that of Paul and Fischer [170c] who studied the reduction and oxidation of propionic and isobutyric acids.


Electron Spin Resonance Electron Spin Resonance Spectrum Electron Spin Resonance Signal Electron Beam Irradiation Pulse Electron Beam 
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Copyright information

© Springer-Verlag Berlin · Heidelberg 1974

Authors and Affiliations

  • Claude Richard
    • 1
  • Pierre Granger
    • 2
  1. 1.Laboratoire de Chimie RadicalaireEquipe de Recherche N° 136 associée au C.N.R.SNancy CedexFrance
  2. 2.Laboratoire de Chimie ThéoriqueUniversité de Nancy INancy CedexFrance

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