Understanding NMR Spectroscopy

Author: James Keeler

Publisher: John Wiley & Sons


Category: Science

Page: 526

View: 532

This text is aimed at people who have some familiarity with high-resolution NMR and who wish to deepen their understanding of how NMR experiments actually ‘work’. This revised and updated edition takes the same approach as the highly-acclaimed first edition. The text concentrates on the description of commonly-used experiments and explains in detail the theory behind how such experiments work. The quantum mechanical tools needed to analyse pulse sequences are introduced set by step, but the approach is relatively informal with the emphasis on obtaining a good understanding of how the experiments actually work. The use of two-colour printing and a new larger format improves the readability of the text. In addition, a number of new topics have been introduced: How product operators can be extended to describe experiments in AX2 and AX3 spin systems, thus making it possible to discuss the important APT, INEPT and DEPT experiments often used in carbon-13 NMR. Spin system analysis i.e. how shifts and couplings can be extracted from strongly-coupled (second-order) spectra. How the presence of chemically equivalent spins leads to spectral features which are somewhat unusual and possibly misleading, even at high magnetic fields. A discussion of chemical exchange effects has been introduced in order to help with the explanation of transverse relaxation. The double-quantum spectroscopy of a three-spin system is now considered in more detail. Reviews of the First Edition “For anyone wishing to know what really goes on in their NMR experiments, I would highly recommend this book” – Chemistry World “...I warmly recommend for budding NMR spectroscopists, or others who wish to deepen their understanding of elementary NMR theory or theoretical tools” – Magnetic Resonance in Chemistry

Nuclear Spin Relaxation in Liquids

Theory, Experiments, and Applications, Second Edition

Author: Jozef Kowalewski

Publisher: CRC Press


Category: Science

Page: 372

View: 840

Nuclear magnetic resonance (NMR) is widely used across many fields of science because of the rich data it produces, and some of the most valuable data come from studies of nuclear spin relaxation in solution. The first edition of this book, published more than a decade ago, provided an accessible and cohesive treatment of the field. The present second edition is a significant update, covering important new developments in recent years. Collecting relaxation theory, experimental techniques, and illustrative applications into a single volume, this book clarifies the nature of the phenomenon, shows how to study it and explains why such studies are worthwhile. Coverage ranges from basic to rigorous theory and from simple to sophisticated experimental methods. Topics include cross-relaxation, multispin phenomena, relaxation studies of molecular dynamics and structure and special topics such as relaxation in systems with quadrupolar nuclei, in paramagnetic systems and in long-living spin states. Avoiding overly demanding mathematics, the authors explain spin relaxation in a manner that anyone with a familiarity with NMR can follow. The focus is on illustrating and explaining the physical nature of relaxation phenomena. Nuclear Spin Relaxation in Liquids: Theory, Experiments and Applications, 2nd edition, provides useful supplementary reading for graduate students and is a valuable reference for NMR spectroscopists, whether in chemistry, physics or biochemistry.

Organic Structures from 2D NMR Spectra

Author: L. D. Field

Publisher: John Wiley & Sons


Category: Science

Page: 328

View: 588

The derivation of structural information from spectroscopic data is now an integral part of organic chemistry courses at all Universities. Over recent years, a number of powerful two–dimensional NMR techniques (e.g. HSQC, HMBC, TOCSY, COSY and NOESY) have been developed and these have vastly expanded the amount of structural information that can be obtained by NMR spectroscopy. Improvements in NMR instrumentation now mean that 2D NMR spectra are routinely (and sometimes automatically) acquired during the identification and characterisation of organic compounds. Organic Structures from 2D NMR Spectra is a carefully chosen set of more than 60 structural problems employing 2D–NMR spectroscopy. The problems are graded to develop and consolidate a student s understanding of 2D NMR spectroscopy. There are many easy problems at the beginning of the collection, to build confidence and demonstrate the basic principles from which structural information can be extracted using 2D NMR. The accompanying text is very descriptive and focussed on explaining the underlying theory at the most appropriate level to sufficiently tackle the problems. Organic Structures from 2D NMR Spectra Is a graded series of about 60 problems in 2D NMR spectroscopy that assumes a basic knowledge of organic chemistry and a basic knowledge of one–dimensional NMR spectroscopy Incorporates the basic theory behind 2D NMR and those common 2D NMR experiments that have proved most useful in solving structural problems in organic chemistry Focuses on the most common 2D NMR techniques including COSY, NOESY, HMBC, TOCSY, CH–Correlation and multiplicity–edited C–H Correlation. Incorporates several examples containing the heteronuclei 31P, 15N and 19F Organic Structures from 2D NMR Spectra is a logical follow–on from the highly successful Organic Structures from Spectra which is now in its fifth edition. The book will be invaluable for students of Chemistry, Pharmacy, Biochemistry and those taking courses in Organic Chemistry. Also available: Instructors Guide and Solutions Manual to Organic Structures from 2D NMR Spectra

NMR Spectroscopy

Processing Strategies

Author: Peter Bigler

Publisher: John Wiley & Sons


Category: Science

Page: 271

View: 955

Text for the series "Spectroscopic Techniques": Leading software designers and teachers of spectroscopy have pooled their expertise to devise a new series "Spectroscopic Techniques: An Interactive Course". User are able to gain a better understanding of a variety of spectroscopic techniques in these step-by-step guides. Let the experts show you new solutions to practiced problems using software provided on the interactive CD-ROM.

Protein NMR Spectroscopy

Principles and Practice

Author: John Cavanagh

Publisher: Elsevier


Category: Science

Page: 912

View: 913

Protein NMR Spectroscopy, Second Edition combines a comprehensive theoretical treatment of NMR spectroscopy with an extensive exposition of the experimental techniques applicable to proteins and other biological macromolecules in solution. Beginning with simple theoretical models and experimental techniques, the book develops the complete repertoire of theoretical principles and experimental techniques necessary for understanding and implementing the most sophisticated NMR experiments. Important new techniques and applications of NMR spectroscopy have emerged since the first edition of this extremely successful book was published in 1996. This updated version includes new sections describing measurement and use of residual dipolar coupling constants for structure determination, TROSY and deuterium labeling for application to large macromolecules, and experimental techniques for characterizing conformational dynamics. In addition, the treatments of instrumentation and signal acquisition, field gradients, multidimensional spectroscopy, and structure calculation are updated and enhanced. The book is written as a graduate-level textbook and will be of interest to biochemists, chemists, biophysicists, and structural biologists who utilize NMR spectroscopy or wish to understand the latest developments in this field. Provides an understanding of the theoretical principles important for biological NMR spectroscopy Demonstrates how to implement, optimize and troubleshoot modern multi-dimensional NMR experiments Allows for the capability of designing effective experimental protocols for investigations of protein structures and dynamics Includes a comprehensive set of example NMR spectra of ubiquitin provides a reference for validation of experimental methods

Basic One- and Two-Dimensional NMR Spectroscopy

Second, Enlarged Edition

Author: Horst Friebolin

Publisher: Wiley-VCH


Category: Science

Page: 368

View: 652

With a foreword by J. D. Roberts Written by an NMR expert with long-standing teaching experience, the first edition of this textbook has been a huge success. New features of this thoroughly revised and substantially enlarged second edition include * NMR spectroscopy of nuclides other than 1H and 13C * 'reverse' procedures for recording spectra Chemists, biologists, physicians, pharmacists and technical assistants will find this new edition even more useful for their daily work. From reviews of the first edition: 'This book is a pleasure to read and if it does not arouse the student's interest, then it is difficult to see what could. It is clearly written and illustrated ... good value and essential reading for anyone wanting to know more about NMR.' Chemistry in Britain 'Another paperback that I would advise students to buy ... [it] can be recommended for general purchase by all chemists.' New Scientist

Spin Dynamics

Basics of Nuclear Magnetic Resonance

Author: Malcolm H. Levitt

Publisher: John Wiley & Sons


Category: Science

Page: 744

View: 1000

Spin Dynamics: Basics of Nuclear Magnetic Resonance, Second Edition is a comprehensive and modern introduction which focuses on those essential principles and concepts needed for a thorough understanding of the subject, rather than the practical aspects. The quantum theory of nuclear magnets is presented within a strong physical framework, supported by figures. The book assumes only a basic knowledge of complex numbers and matrices, and provides the reader with numerous worked examples and exercises to encourage understanding. With the explicit aim of carefully developing the subject from the beginning, the text starts with coverage of quarks and nucleons and progresses through to a detailed explanation of several important NMR experiments, including NMR imaging, COSY, NOESY and TROSY. Completely revised and updated, the Second Edition features new material on the properties and distributions of isotopes, chemical shift anisotropy and quadrupolar interactions, Pake patterns, spin echoes, slice selection in NMR imaging, and a complete new chapter on the NMR spectroscopy of quadrupolar nuclei. New appendices have been included on Euler angles, and coherence selection by field gradients. As in the first edition, all material is heavily supported by graphics, much of which is new to this edition. Written for undergraduates and postgraduate students taking a first course in NMR spectroscopy and for those needing an up-to-date account of the subject, this multi-disciplinary book will appeal to chemical, physical, material, life, medical, earth and environmental scientists. The detailed physical insights will also make the book of interest for experienced spectroscopists and NMR researchers. • An accessible and carefully written introduction, designed to help students to fully understand this complex and dynamic subject • Takes a multi-disciplinary approach, focusing on basic principles and concepts rather than the more practical aspects • Presents a strong pedagogical approach throughout, with emphasis placed on individual spins to aid understanding • Includes numerous worked examples, problems, further reading and additional notes Praise from the reviews of the First Edition: "This is an excellent book... that many teachers of NMR spectroscopy will cherish... It deserves to be a ‘classic’ among NMR spectroscopy texts." NMR IN BIOMEDICINE "I strongly recommend this book to everyone...it is probably the best modern comprehensive description of the subject." ANGEWANDTE CHEMIE, INTERNATIONAL EDITION

Organic Structure Determination Using 2-D NMR Spectroscopy

A Problem-based Approach

Author: Jeffrey H. Simpson

Publisher: Academic Press


Category: Science

Page: 574

View: 495

"The second edition of this book comes with a number of new figures, passages, and problems. Increasing the number of figures from 290 to 448 has necessarily added considerable length, weight, and, expense. It is my hope that the book has not lost any of its readability and accessibility. I firmly believe that most of the concepts needed to learn organic structure determination using nuclear magnetic resonance spectroscopy do not require an extensive mathematical background. It is my hope that the manner in which the material contained in this book is presented both reflects and validates this belief"--

NMR-Spectroscopy: Data Acquisition

Author: Christian Schorn

Publisher: John Wiley & Sons


Category: Science

Page: 369

View: 636

The key to correct structure analysis now in its second edition. There have been many important advances in the field since the first publication of this book. Consequently, this edition has been extended to incorporate a number of pulse sequence developments. Nevertheless, it still details the basic experiments on a step-by-step basis, such that students and newcomers may come to understand basic data acquisition procedures, modular pulse sequence units, and complete sequences in NMR spectroscopy. The author applies the numerous possibilities of Bruker's simulation program NMR-SIM to provide a guided introduction to the world of pulse sequences. Major revisions include increased coverage of simulations of multiple offset selective pulse experiments as well as filter elements. One new chapter is a collection of some of the latest published ideas to improve existing sequences, together with spin-state selective experiments. The result is a volume encouraging beginners to use high resolution NMR, while prompting experts to evaluate new experiments using the easy-manageable simulation program. From the first edition: " ... not only of interest for the NMR operators but also for interpreters of spectral data?. Many mistakes made with the application of modern NMR spectroscopy because of a lack of understanding of basic principles may be avoided.

Modern NMR Spectroscopy

A Workbook of Chemical Problems

Author: Jeremy K. M. Sanders

Publisher: Oxford University Press on Demand


Category: Science

Page: 127

View: 685

Erros I have made; Interpretation of spectra; Symmetry and exchange; Structure determination using NMR alone; Structure and mechanism; Hints; Solutions.