Nuclear and electron relaxation : the magnetic nucleus-unpaired electron coupling in solution

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書誌事項

Nuclear and electron relaxation : the magnetic nucleus-unpaired electron coupling in solution

Lucia Banci, Ivano Bertini, Claudio Luchinat

VCH, c1991

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注記

Includes bibliographical references and index

内容説明・目次

内容説明

This book deals with spin relaxation by underlying the similarities between nuclear and electron spins, and provides a clear and unified picture of the behaviour of spins in magnetic resonance. Tailored for scientists dealing with chemical applications of relaxation phenomena, it reviews the basic theory together with the mathematical approach and shows how the theory elucidates the structure and dynamic behaviour of transition metal complexes, metal clusters and metalloproteins. The complete theory of contrast agents in magnetic resonance imaging is also presented. The book acts as a guide for anyone working with paramagnetic systems, from physical and inorganic chemists to biophysicists.

目次

  • Part 1 Introduction: the concept of relaxation in molecular spectrosocpy
  • magnetic resonance
  • the spin Hamiltonian formalism
  • hyperfine coupling
  • effect of hyperfine coupling on relaxation
  • statistical description of spin relaxation
  • correlation time for the nucleus-electron coupling
  • pulsed versus continuous-wave magnetic resonance. Part 2 Relaxation times: definition of a relaxation time at zero magnetic field
  • definition of T1, T2, T1p
  • the Bloch equations
  • nuclear T1 and T2: and instructive picture
  • chemical exchange as a source of relaxation
  • relaxation of a system constituted by spin pairs
  • the analogies between nuclear and electron relaxation. Part 3 Measurement of relaxation times and related experiments: experimental techniques for the measurement of nuclear longitudinal relaxation time T1
  • selective and non-selective nuclear T1
  • nuclear overhauser effect experiments
  • experimental techniques for the measurement of nuclear transverse relaxation time T2
  • measurement of T1p - spin-locking expiments
  • the field-cycling experiment, useful for determing and nuclear relaxation times at low magnetic field
  • effect of short relaxation times on 2D NMR experiments
  • experimental techniques for the measurement of electron relaxation times T1 and T2
  • the ENDOR experiment
  • measurement of T1 and T2 (Nuclear-Electron Cross-Relaxation). Part 4 Electron Relaxation in dilute systems: physical picture of electron relaxation
  • spin-orbit coupling
  • electron relaxation mechanisms in the solid state - crystal vibrations, electron spin-phonon coupling
  • electron relaxation in solution
  • some numerical values. Part 5 Nuclear relaxation in paramagnetic systems: mechanisms of nuclear relaxation through coupling with unpaired electrons
  • dipolar relaxation
  • a pictorial description of dipolar relaxation
  • diffusion-controlled dipolar relaxation
  • contact relaxation
  • Curie spin relaxation
  • effects of splitting the S Manifold at Zero magnetic field - isotropic hyperfine coupling with the metal nucleus, anisotopic hyperfine coup
  • oing with the metal nucleus
  • g-Anisotropy, zero field splitting
  • Redfield limit and beyond. Part 6 Electron and nuclear relaxation through NMRD: what is NMRD?
  • copper(II) systems
  • cobalt(II) systems
  • nickel(II) systems
  • manganese(II) systems
  • other metal ions
  • field dependence of . Part 7 Magnetic couples systems: effect of magnetic coupling on the electron relaxation times - unlike spin pairs, like spin pairs
  • NMR parameters in magnetic coupled systems - isotropic shift, part contents.

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