Chemically Induced Dynamic Nuclear and Electron Polarizations-CIDNP and CIDEP

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...

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Bibliographic Details
Main Authors: Richard, C., Granger, P. (Author)
Format: eBook
Language:English
Published: Berlin, Heidelberg Springer Berlin Heidelberg 1974, 1974
Edition:1st ed. 1974
Series:NMR Basic Principles and Progress
Subjects:
Online Access:
Collection: Springer Book Archives -2004 - Collection details see MPG.ReNa
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245 0 0 |a Chemically Induced Dynamic Nuclear and Electron Polarizations-CIDNP and CIDEP  |h Elektronische Ressource  |c by C. Richard, P. Granger 
250 |a 1st ed. 1974 
260 |a Berlin, Heidelberg  |b Springer Berlin Heidelberg  |c 1974, 1974 
300 |a II, 130 p  |b online resource 
505 0 |a I. Origin of the CIDNP Effect -- I. Introduction -- II. The Phenomenon -- III. First Interpretations of the CIDNP Effect -- IV. The Radical-Pair Theory -- V. Applications of the CIDNP Effect -- VI. Experimental Procedures -- II. The Theory of the CIDNP Effect -- I. Basic Principles -- II. The Radical-Pair Model -- III. Theoretical Calculation of the CIDNP Effect (CKO) -- IV. Kinetic Formulation of the Radical-Pair Mechanism -- V. The Influence of the Magnetic Field H0 on the CIDNP Spectra -- VI. Relaxation and other Effects -- III. Applications to the Study of Chemical Reactions and Magnetic Properties -- I. Applications to the Study of Chemical Reactions -- II. Determination of the Magnetic Properties of Radicals and Molecules -- IV. The Chemically Induced Dynamic Electron Polarization (CIDEP Effect) -- I. Introduction -- II. Experimental Procedures -- III. Experimental Results -- IV. The Theory of the CIDEP Effect -- Conclusion -- References -- Subject-Index 
653 |a Physical chemistry 
653 |a Chemistry, Organic 
653 |a Physical Chemistry 
653 |a Organic Chemistry 
700 1 |a Granger, P.  |e [author] 
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520 |a 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