Spin Temperature and Nuclear Magnetic Resonance in Solids PDF Download

Author: Maurice Goldman
Publisher:
ISBN:
Category : Nuclear magnetic resonance
Languages : en
Pages : 268

View

Book Description

Author: Lieven Gerven
Publisher: Springer Science & Business Media
ISBN: 146842808X
Category : Science
Languages : en
Pages : 433

View

Book Description

Author: Frank A. Bovey
Publisher: Elsevier
ISBN: 0080916996
Category : Science
Languages : en
Pages : 668

View

Book Description
Nuclear Magnetic Resonance Spectroscopy, Second Edition focuses on two-dimensional nuclear magnetic resonance (NMR) spectroscopy, high resolution NMR of solids, water suppression, multiple quantum spectroscopy, and NMR imaging. The selection first takes a look at the fundamental principles and experimental methods. Discussions focus on the NMR phenomenon, dipolar broadening and spin-spin relaxation, nuclear electric quadrupole relaxation, saturation, magnetic shielding and chemical shift, magnetic field, transitions between the nuclear energy levels, and resolution and sensitivity considerations. The manuscript then ponders on chemical shift, coupling of nuclear spins, and nuclear relaxation and chemical rate processes. Topics include spin lattice relaxation, spin-spin relaxation, spin decoupling and associated techniques, and description and analysis of spin systems. The text examines two-dimensional NMR spectroscopy, macromolecules, and NMR of solids, including magic angle spinning, cross polarization, proton dipolar broadening, biopolymers, and chain motion in macromolecules. The selection is a valuable source of data for readers interested in nuclear magnetic resonance spectroscopy.

Author: Bernard C. Gerstein
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 320

View

Book Description
This volume is an ideal starting point for the graduate student seeking a basic introduction to the theory and uses of solid-state nuclear magnetic resonance (NMR) spectroscopy. Accessible to students with only a survey-level physics background, the material assumes little prior knowledge of the basic theory of electromagnetism. All the major areas are covered, including an introduction to concepts of time-dependent quantum mechanics as they apply to NMR spectroscopy of the solid state. Each chapter includes problems designed to enhance the reader's understanding of the material. Instructive and practical, this volume provides the basic knowledge needed to access the general literature and the more advanced monographs on this subject. In addition to assisting entrance into the field, Transient Techniques in NMR of Solids will be a useful guide for professionals already working in related areas of chemistry. FROM THE PREFACE: Nuclear magnetic resonance (NMR) is truly a remarkable phenomenon. Remarkable can imply different things to different people. From the point of view of a physicist, spin dynamics is an elegant example of the use of time-dependent quantum mechanics, and NMR absorption of energy is a prototype for spectroscopic transitions. From the point of view of the practicing chemist and materials scientist, NMR spectroscopy is an invaluable tool for the identification of chemical species and structures. Had NMR spectroscopic techniques commercially available in the early 1960s been the only result of investigations of this phenomenon, it would have had a major impact on the course of chemical analysis. The study of liquids and solutions for chemical shifts and couplings of protons had produced a rapid means of identifying chemical species nondestructively. The study of dynamical properties also could be addressed by study of temperature dependence of the spectra or of the saturation of the resonance by high-power irradiation. Even at that time, however, studies of the spin dynamics had already begun to indicate that there were many interesting facets of the NMR phenomenon left to exploit. For example, the Fourier-transform relationship of the free-induction decay and the absorption spectrum had been shown and the basis of the cross-polarization experiment was being investigated. A number of chemists had begun to study the spin*b1lattice relaxation times of species by pulse NMR techniques by utilizing methods that were not familiar at that time to the typical chemist but that are now commonly employed in NMR analysis. The principal characteristic of the NMR technique that makes it so useful for chemical analysis of liquids and solutions is the high resolution that allows one to observe very small interactions such as the chemical shift and the spin*b1spin coupling. These weak interactions are quite sensitive to the local environment of the spin and therefore may be used as a diagnostic for the environment. The connectivity of chemical structure is often mimicked closely in the NMR connectivity of the spectrum, and quantitative informaton is relatively easy to obtain. Nuclear magnetic resonance spectra of solids exhibit such resolution only in special cases. The primary (although not the exclusive) reason for the lack of resolution in the spectrum of a typical solid is the presence of the dipole*b1dipole interaction, which dominates the NMR spectroscopy of solids that have been of interest to chemists. One solution (no pun intended) to the problem of obtaining chemical-shift information about such solids is to dissolve them and to study them in solution. However, if the solid is insoluble or otherwise intractable or if the analysis involves questions about the properties of the substance in the solid state, then there arises a need for techniques to study the weaker interactions in the presence of the dipole*b1dipole interaction or other overwhelming interactions. This volume describes the means dev

Author: Maurice Goldman
Publisher:
ISBN:
Category :
Languages : en
Pages : 246

View

Book Description

Author: M. Mehring
Publisher: Springer Science & Business Media
ISBN: 3642687563
Category : Science
Languages : en
Pages : 352

View

Book Description
The field of Nuclear Magnetic Resonance (NMR) has developed at a fascinating pace during the last decade. It always has been an extremely valuable tool to the organic chemist by supplying molecular "finger print" spectra at the atomic level. Unfortunately the high resolution achievable in liquid solutions could not be obtained in solids and physicists and physical chemists had to live with unresolved lines open to a wealth of curve fitting procedures and a vast amount of speculations. High resolution NMR in solids seemed to be a paradoxon. Broad structure less lines are usually encountered when dealing with NMR in solids. Only with the recent advent of mUltiple pulse, magic angle, cross-polarization, two-dimen sional and multiple-quantum spectroscopy and other techniques during the last decade it became possible to resolve finer details of nuclear spin interactions in solids. I have felt that graduate students, researchers and others beginning to get involved with these techniques needed a book which treats the principles, theo retical foundations and applications of these rather sophisticated experimental techniques. Therefore I wrote a monograph on the subject in 1976. Very soon new ideas led to the developement of "two-dimensional spectroscopy" and "multiple-quantum spectroscopy", topics which were not covered in the first edition of my book. Moreover an exponential growth of literature appeared in this area of research leaving the beginner in an awkward situation of tracing back from a current article to the roots of the experiment.

Author: Maurice Goldman
Publisher:
ISBN:
Category : Nuclear magnetic resonance
Languages : en
Pages : 268

View

Book Description

Author: Lieven van Gerven
Publisher:
ISBN:
Category : Nuclear magnetic resonance
Languages : en
Pages : 468

View

Book Description

Author: R. K. Harris
Publisher: Royal Society of Chemistry
ISBN: 0851862624
Category : Reference
Languages : en
Pages : 439

View

Book Description
As a spectroscopic method, Nuclear Magnetic Resonance (NMR) has seen spectacular growth over the past two decades, both as a technique and in its applications. Today the applications of NMR span a wide range of scientific disciplines, from physics to biology to medicine. Each volume of Nuclear Magnetic Resonance comprises a combination of annual and biennial reports which together provide comprehensive of the literature on this topic. This Specialist Periodical Report reflects the growing volume of published work involving NMR techniques and applications, in particular NMR of natural macromolecules which is covered in two reports: "NMR of Proteins and Acids" and "NMR of Carbohydrates, Lipids and Membranes". For those wanting to become rapidly acquainted with specific areas of NMR, this title provides unrivalled scope of coverage. Seasoned practitioners of NMR will find this an in valuable source of current methods and applications. Specialist Periodical Reports provide systematic and detailed review coverage in major areas of chemical research. Compiled by teams of leading authorities in the relevant subject areas, the series creates a unique service for the active research chemist, with regular, in-depth accounts of progress in particular fields of chemistry. Subject coverage within different volumes of a given title is similar and publication is on an annual or biennial basis.

Author:
Publisher:
ISBN:
Category : Nuclear magnetic resonance
Languages : en
Pages : 204

View

Book Description