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Informationen zum Autor Dr. Vladimir I. Bakhmutov is a professional NMR spectroscopist at the Department of Chemistry, Texas A&M University, USA. He is also the author of 220 scientific publications including reviews and book chapters. Klappentext This book demonstrates how NMR relaxation can be applied for structural diagnostics of chemical compounds, recognition of weak intermolecular interactions, determinations of internuclear distances and lengths of chemical bonds when compounds under investigation can exist only in solutions.* Written as a textbook for chemists, demanding little background in physics and NMR* Its practical approach helps the reader to apply the techniques in the lab* First book to teach NMR Relaxation techniques to chemists Zusammenfassung This book demonstrates how NMR relaxation can be applied for structural diagnostics of chemical compounds, recognition of weak intermolecular interactions, determinations of internuclear distances and lengths of chemical bonds when compounds under investigation can exist only in solutions.* Written as a textbook for chemists, demanding little background in physics and NMR* Its practical approach helps the reader to apply the techniques in the lab* First book to teach NMR Relaxation techniques to chemists Inhaltsverzeichnis Preface. Chapter 1. How and why nuclei relax. 1.1. Nucleus in the magnetic field. 1.2. Spin-lattice and spin-spin nuclear relaxation. 1.2.1. Macroscopic magnetization: relaxation times T1 and T2. 1.3. Molecular motions as reason of nuclear relaxation. 1.3.1. Correlation times and activation energies of Molecular Motions. 1.3.2. Isotropic and anisotropic molecular motions. 1.4. Bibliography for Chapter 1. Chapter 2. How to measure the NMR relaxation times. 2.1. Exponential and non-exponential nuclear relaxation. 2.2. Measurements of spin-lattice relaxation times. 2.3. Measurements of selective and bi-selective T1 times. 2.4. Determinations of T1( and T2 times. 2.5. Preparation of samples for relaxation experiments. 2.6. Bibliography to Chapter 2. Chapter 3. Errors in Determinations of Relaxation Times. 3.1. Instrumental errors. 3.2. Incorrect parameters for T1, T2 measurements and T1, T2 calculations. 3.3 Coupled nuclear relaxation. 3.4. Chemical exchanges. 3.5. Bibliography to Chapter 3. Chapter 4. NMR relaxation by dipole-dipole and quadrupole interactions. 4.1. The intramolecular dipole-dipole relaxation: homo- and hetero-nuclear dipolar coupling and the spectral density function. 4.2. Haw to reveal the presence of the dipolar mechanisms. 4.2.1. NOE as a test for dipole-dipole nuclear relaxation. 4.2.2. Evaluations of the dipolar contributions from selective and non-selective T1 times. 4.3. Intermolecular dipole-dipole interactions. 4.4. Electric field gradients at quadrupolar nuclei. 4.5. Nuclear quadrupole coupling constant as a measure of the electric field gradient. 4.6. Quadrupole relaxation. 4.7. Bibliography to Chapter 4. Chapter 5. Relaxation by chemical shift anisotropy, spin-rotation relaxation, scalar relaxation of the second kind and cross-mechanisms. 5.1. Relaxation by chemical shift anisotropy. 5.2. Spin-rotation relaxation. 5.3. Interference mechanisms of nuclear relaxation. 5.4. The scalar relaxation of the second kind. 5.5 Bibliography to Chapter 5. Chapter 6. Nuclear relaxation in molecular systems with anisotropic motions. 6.1. Spin-lattice nuclear relaxation in ellipsoid molecules: Temperature dependences of T1times. 6.2. How to reveal anisotropic molecular motions in solutions. 6.3. Nuclear relaxation in the presence of correlation time distributions. ...
List of contents
Preface.
Chapter 1. How and why nuclei relax.
Chapter 2. How to measure the NMR relaxation times.
Chapter 3. Errors in Determinations of Relaxation Times.
Chapter 4. NMR relaxation by dipole-dipole and quadrupole interactions.
Chapter 5. Relaxation by chemical shift anisotropy, spin-rotation relaxation, scalar relaxation of the second kind and cross-mechanisms.
Chapter 6. Nuclear relaxation in molecular systems with anisotropic motions.
Chapter 7. 1H T1 relaxation diagnostics in solutions.
Chapter 8. Internuclear distances from the 1H T1 relaxation measurements in solutions.
9. Chapter 9: Deuterium quadrupole coupling constants from 2H T1 relaxation measurements in solutions.
9. 5. Bibliography to Chapter 9.
Chapter 10. Spin-lattice 1H and 2H relaxation in mobile groups.
10. 5. Deuterium spin-lattice NMR relaxation in mobile molecular fragments.
Chapter 11. Relaxation of other nuclei (than 1H and 2H) and specific relaxation experiments.
11. 4. Character of molecular motions from 17O and 2H T1 relaxation in solutions.
Chapter 12. Paramagnetic NMR relaxation.
Concluding remarks.
Subject Index.
Report
" appropriate for use in an advanced undergraduate or graduate level course on this topic...an excellent starting point for an investigator who would like to begin using relaxation based NMR experiments." ( Journal of Natural Products , January 2006) "Bakhmutov s book gives a relatively low level introduction to relation measurements and their uses in describing dynamical processes " ( Journal of the American Chemical Society , May 25, 2005)
