Advances in Magnetic Resonance (eBook)

Volume 6

John S. Waugh (Herausgeber)

eBook Download: PDF

2013 | 1. Auflage
324 Seiten
Elsevier Science (Verlag)
978-1-4832-8154-4 (ISBN)

Infos

Advances in Magnetic Resonance, Volume 6 focuses on the theoretical and practical aspects of applying magnetic resonance methods to various problems in physical chemistry, emphasizing the different aspects of the exegesis of these problems. This book discusses the gas phase magnetic resonance of electronically excited molecules; techniques for observing excited electronic states; NMR studies in liquids at high pressure; and effect of pressure on self-diffusion in liquids. The nuclear magnetic resonance investigations of organic free radicals; measurement of proton coupling constants by NMR; and crystal point group symmetry and microscopic tensor properties in magnetic resonance spectroscopy are also elaborated. This text likewise deliberates the degeneracy of symmetry-related tensors; second and fourth moments in NQR spectroscopy for spins with I = 1; and fourth moment for equivalent nuclei with spins I = 1. This publication is valuable to physical chemists and students aiming to acquire knowledge on the application of magnetic resonance methods.

Inhalt

Front Cover 1
Advances in Magnetic Resonance 4
Copyright Page 5
Table of Contents 6
Contributors 8
Preface 10
Contents of Previous Volumes 12
Chapter 1. Gas Phase Magnetic Resonance of Electronically Excited Molecules 16
I. Introduction 16
II. The Structural Problem 18
III. Techniques for Observing Excited Electronic States 43
IV. Observed Spectra 70
Chapter 2. NMR Studies in Liquids at High Pressure 88
I. Introduction 88
II. Experimental Techniques 94
III. Effect of Pressure on Self-Diffusion in Liquids 108
IV. Effect of Pressure on the Spin-Lattice Relaxation Times in Liquids 113
V. Effect of Pressure on Chemical Shift 147
VI. Conclusions 149
Appendix: NMR Studies in Solids at High Pressure 150
Chapter 3. Nuclear Magnetic Resonance Investigations of Organic Free Radicals 156
I. Introduction 156
II. Relaxation Studies 160
III. Measurement of Proton Coupling Constants by NMR 168
IV. Deuterium NMR: Hyperfine and Quadrupole Coupling Constants 176
V. Fluorine NMR: Fluorine Coupling Constants and Spin Densities 177
VI. Alkali Metal NMR: Li–Cs Coupling Constants 181
VII. Measurement of 13C Coupling Constants by NMR 184
VIII. NMR Studies of Polyradicals 186
IX. Conclusion 196
Chapter 4. Crystal Point Group Symmetry and Microscopic Tensor Properties in Magnetic Resonance Spectroscopy 198
I. Tensor Properties of Microregions in Crystals 198
II. Symmetry Related Tensors Yi 202
III. Some Properties of Observable Tensor Projections Y(.) 211
IV. Degeneracy of Symmetry-Related Tensors 215
V. Experimental Determination of Tensors Yi 229
VI. Determination of Crystal Symmetry from Symmetry-Related Tensors 253
Acknowledgments 261
Appendices 261
Chapter 5. Second and Fourth Moments in NQR Spectroscopy for Spins with I=1 274
I. Introduction 274
II. Second Moments for Like Spins I = 1 279
III. Contribution to the Second Moment for Spins I = 1 from Unlike Spins 294
IV. Fourth Moment for Equivalent Nuclei with Spins I = 1 304
V. Examples 308
Appendices 312
Author Index 318
Subject Index 324

Produkt-Details

• Erscheint lt. Verlag: 22.10.2013
• Sprache: englisch
• Themenwelt: Naturwissenschaften ► Chemie
• Themenwelt: Naturwissenschaften ► Physik / Astronomie ► Elektrodynamik
• Themenwelt: Technik
• ISBN-10: 1-4832-8154-X / 148328154X
• ISBN-13: 978-1-4832-8154-4 / 9781483281544