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Chemically Induced Dynamic Nuclear and Electron Polarizations-CIDNP and CIDEP

  • Conference proceedings
  • © 1974

Overview

Authors:
  1. Claude Richard

    1. Laboratoire de Chimie Radicalaire, Equipe de Recherche N° 136 associée au C.N.R.S, Nancy Cedex, France

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  2. Pierre Granger

    1. Laboratoire de Chimie Théorique, Université de Nancy I, Nancy Cedex, France

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Part of the book series: NMR Basic Principles and Progress (NMR, volume 8)

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Table of contents (5 papers)

  1. Front Matter

    Pages i-3
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  2. Introduction

    • Claude Richard, Pierre Granger
    Pages 5-5

  3. Origin of the CIDNP Effect

    • Claude Richard, Pierre Granger
    Pages 7-22

  4. The Theory of the CIDNP Effect

    • Claude Richard, Pierre Granger
    Pages 23-73

  5. Applications to the Study of Chemical Reactions and Magnetic Properties

    • Claude Richard, Pierre Granger
    Pages 75-105

  6. The Chemically Induced Dynamic Electron Polarization (CIDEP Effect)

    • Claude Richard, Pierre Granger
    Pages 107-115

  7. Back Matter

    Pages 117-130
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Keywords

About this book

Anomalous electron-spin state populations in the Electron Paramagnetic Re­ sonance (EPR) spectra of radicals formed during radio lysis experiments were observed in 1963 by FESSENDEN and SCHULER [170a]. This phenomenon did not receive much attention at the time. In 1967, BARGON, FISCHER, and JOHNSEN [5] and independently WARD and LAWLER [7,8] reported a similar phenomenon for Nuclear Magnetic Resonance (NMR) spectra taken during radical reactions: emission or enhanced absorption, or both. The earliest attempts to explain this new NMR phenomenon treated these effects in a way similar to that of Dynamic Nuclear Polarization (DNP) or the Overhauser effect. Although the polarization has a completely different origin, DNP gave its name to this effect: Chemically Induced Dynamic Nuclear Polariza­ tion (CIDNP). [The name Chemically Induced Dynamic Electron Polarization (CIDEP) was introduced later by analogy with CIDNP]. After the initial publica­ tions, all the new data demonstrated that the first theory could not be correct. In 1969, a new theory was proposed by CLOSS [18] and independently by KAPTEIN and OOSTERHOFF [23] and called the radical-pair theory. This mechanism was proposed to account for the observations of polarization in both NMR and EPR. The radical-pair theory is based on weak interactions in a pair of radicals: the strength of interaction between the electronic states of the radicals depends in particular on the nuclear-spin states.

Authors and Affiliations

  • Laboratoire de Chimie Radicalaire, Equipe de Recherche N° 136 associée au C.N.R.S, Nancy Cedex, France

    Claude Richard

  • Laboratoire de Chimie Théorique, Université de Nancy I, Nancy Cedex, France

    Pierre Granger

Bibliographic Information

  • Book Title: Chemically Induced Dynamic Nuclear and Electron Polarizations-CIDNP and CIDEP

  • Authors: Claude Richard, Pierre Granger

  • Series Title: NMR Basic Principles and Progress

  • DOI: https://doi.org/10.1007/978-3-642-65793-1

  • Publisher: Springer Berlin, Heidelberg

  • eBook Packages: Springer Book Archive

  • Copyright Information: Springer-Verlag Berlin · Heidelberg 1974

  • Softcover ISBN: 978-3-642-65795-5Published: 15 November 2011

  • eBook ISBN: 978-3-642-65793-1Published: 06 December 2012

  • Series ISSN: 0170-5989

  • Edition Number: 1

  • Number of Pages: II, 130

  • Topics: Organic Chemistry, Physical Chemistry

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