《核磁共振在有机化学中的应用》英文PDF电子书

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全书4个压缩卷，解压后7.91M
书名Nuclear Magnetic Resonance  applications to organic chemistry
作者John ID. Roberts
出版社McGRAW-HILL  BOOK  COMPANY, IN
出版日期1959
出版号 58-13888
页数133
内容简介
This brief book is the outgrowth of  some forty lectures in which it was
attempted to explain the phenomenon of  nuclear magnetic resonance
absorption and the uses of  high-resolution nuclear magnetic resonance
spectroscopy to organic chemists whose background, like that of  the
author, has often been deficient in nuclear and-qlectromagnetic theory.
Quite a number  of  suggestions were received for presentation of  the
material in printed form with illustrations based on the lecture slides.
This has now been done, and it is hoped that the result will bepf service
o practicing chemists and students as a guide to various applic+ns  of
NMR spectroscopy and an introduction to more authoritative works.
Throughout, the coverage is illustrative rather than comprehensive.
目录
1 . Introduction . The Nuclear Resonance Phenomenon
1.1 . Introduction  ...........
1.2 . Nuclear Magnetic Resonance Spectrometers  .
1.3 . Magnetic Properties of  Nuclei . Nuclear Spin
1.4 . Magnetic Quantum Numbers  ......
1.5 . Nuclear Precession  .........
1.6 . Nuclear Relaxation  .........
1.7 . Longitudinal Relaxation, TI  ......
1.8 . Transverse Relaxation, T,  .......
1.9 . The Nuclear Resonance Signal  .....
1.10 . Relaxation Effects on NMR Signals ....
1.11 . Properties of  Magnetic Nuclei of Interest to
Organic Problems ..........
2 . The Chemical Shift ..............
2.1 . Introduction . The Chemical-shift Parameter  ....
2.2 . Measurement  of  Chemical  Shift  . .......
2.3 . Some Factors Which  Influence 6  .......
2.4 . Chemical Shifts for Other Nuclei  .......
2.5 . Proton 6 Values and Electronegativity ......
2.6 . 6 and Hammett's a Constants .........
2.7 . Resonance Signal Areas and Widths  ......
2.8 . Chemical Shifts and Organic Structure Determinations .
General  Considerations  ..........
2.9  . Illustrative Analysis of  a Reaction Product  ....
2.10 . Accentuation of  Chemical Shifts by Paramagnetic Salts
3 . Spin-Spin Splitting  ...........
3.1 . The High-resolution Ethanol Spectrum ... ..... 42
3.2  . Spin-Spin Splitting in a Single Crystal  ... ..... 43
3.3  . Spin-Spin Splitting in  Liquids ...... ..... 45
3.4 . Spin-Spin Splitting in the Ethyl Group  ... ..... 46
3.5 . More Complex Spin-Spin Splittings .... ..... 48
3.6 . Magnitudes of Coupling Constants  .... ..... 53
3.7 . Coupling between Equivalent and Nearly Equiv ,alent Protons .  55
3.8 . Spin-Spin Couplings in Rigid Systems  ... .... 57
3.9  . Spin-Spin Splitting and Molecular Asymmetry  ..... 58
4 . Nuclear Magnetic Resonance and Reaction Kinetics  ..... 61
4.1 . Introduction . Proton Exchange in Water-Acetic
Acid Mixtures  ................ 61
4.2 . Relationship between Resonance Line Shapes and
Exchange Rates  ............... 63
4.3 . Proton  Exchange  in  Ethanol-Water  Mixtures  ..... 64
4.4  . Ethyl Acetoacetate and Its En01 Form  ........ 67
4.5 . Rates of  Rotation Around 40-N< Bonds of Amides ... 69
4.6 . Restricted  Rotation  in  Ethane  Derivatives  ...... 71
4.7 . Nitrogen Inversion Frequencies of  Cyclic Imines  .... 74
4.8 . Proton Exchange in Ammonia and Ammonium Ions  ... 76
5 . Nuclear Quadrupole Relaxation Effects . Double Resonance ... 80
5.1 . Proton Resonance Line Broadening by  1iN  ...... 80
5.2 . Nuclear Quadrupoles and Quadrupole-induced Relaxation .  .  81
5.3  . Proton N-K  Resonance of Pyrrole . Double Resonance  .  .  83
5.4 . Quadrupole-induced Relaxation with Other Nuclei .... 84
5.5 . Applications of  Double Resonance  ......... 86
Appendix A . The Bloch Equations  ............ 88
Appendix B . Bibliography  .............. 99
Appendix C . Problems ................ 100
Name Index  ................... 111
Subject Index ................... 113

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