NMR Shift Reagents in Structural Analysis

NMR Shift Reagents in Structural Analysis PDF Author: John F. Gemoules
Publisher:
ISBN:
Category : Alcohols
Languages : en
Pages : 70

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Book Description

NMR Shift Reagents in Structural Analysis

NMR Shift Reagents in Structural Analysis PDF Author: John F. Gemoules
Publisher:
ISBN:
Category : Alcohols
Languages : en
Pages : 70

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Book Description


Lanthanide Shift Reagents in Stereochemical Analysis

Lanthanide Shift Reagents in Stereochemical Analysis PDF Author: Terence C. Morrill
Publisher: Wiley-VCH
ISBN:
Category : Science
Languages : en
Pages : 216

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Structure Analysis and Molecular Dynamics of Cyclic Compounds by Shift Reagent NMR

Structure Analysis and Molecular Dynamics of Cyclic Compounds by Shift Reagent NMR PDF Author: Harri Häkli
Publisher:
ISBN: 9789516782099
Category : Cyclic compounds
Languages : en
Pages : 48

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NMR Shift Reagents

NMR Shift Reagents PDF Author: Thomas J. Wenzel
Publisher: Springer
ISBN:
Category : Medical
Languages : en
Pages : 304

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Nuclear Magnetic Resonance Shift Reagents

Nuclear Magnetic Resonance Shift Reagents PDF Author: Robert Sievers
Publisher: Elsevier
ISBN: 0323150993
Category : Science
Languages : en
Pages : 425

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Book Description
Nuclear Magnetic Shift Reagents presents the proceedings of the Symposium on the Chemistry of Nuclear Magnetic Resonance Shift Reagents, held in Dallas, Texas, on April 9–11, 1973. This book discusses the fundamental aspects of shift reagent chemistry as well as the physical and chemical properties of shift reagents. Comprised of 16 chapters, this compilation of papers starts with an overview of the deuterium isotope effect in lanthanide shifts. This text then examines the variations in coordination geometries for chemically equivalent molecules of shift reagent-substrate complexes in the solid state, which illustrate the ease with which changes occur in the coordination sphere of lanthanide complexes. Other chapters discuss the dipolar nature of proton resonance shifts in lanthanide shift reagent systems. This book considers as well the feasibility of using chiral shift reagents. The final chapter deals with the effects of chemical equilibrium and adduct stoichiometry in studies of shift reagent. Chemists, biochemists, and molecular physicists will find this book useful.

Modern Aspects of Rare Earths and their Complexes

Modern Aspects of Rare Earths and their Complexes PDF Author: Vinny R. Sastri
Publisher: Elsevier
ISBN: 0080536689
Category : Science
Languages : en
Pages : 1005

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Book Description
In order to use rare earths successfully in various applications, a good understanding of the chemistry of these elements is of paramount importance. Nearly three to four decades have passed since titles such as The Rare Earths edited by F.H. Spedding and A.H. Daane, The chemistry of the Rare Earth Elements by N.E. Topp and Complexes of the Rare Earths by S.P. Sinha were published. There have been many international conferences and symposia on rare earths, as well as the series of volumes entitled Handbook of Physics and Chemistry of Rare Earths edited by K.A. Gschneidner and L. Eyring. Thus, there is a need for a new title covering modern aspects of rare earth complexes along with the applications. The present title consists of twelve chapters. 1. Introduction2. General aspects3. Stability of complexes4. Lanthanide complexes5. Structural chemistry of lanthanide compounds6. Organometallic complexes7. Kinetics and mechanisms of rare earths complexation8. Spectroscopy of lanthanide complexes9. Photoelectron spectroscopy of rare earths10. Lanthanide NMR shift reagents11. Environmental ecological biological aspects12. Applications The authors studied in schools headed by pioneers in rare earth chemistry, have a combined experience of one hundred and fifty years in inorganic chemistry, rare earth complex chemistry, nuclear and radiochemistry of rare earths and supramolecular chemistry. The present monograph is a product of this rich experience.

NMR Studies and Conformational Analysis: the Use of Lanthanide Shift Reagents

NMR Studies and Conformational Analysis: the Use of Lanthanide Shift Reagents PDF Author: Thomas William Proulx
Publisher:
ISBN:
Category :
Languages : en
Pages : 276

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Basic 1H- and 13C-NMR Spectroscopy

Basic 1H- and 13C-NMR Spectroscopy PDF Author: Metin Balci
Publisher: Elsevier
ISBN: 0080525539
Category : Science
Languages : en
Pages : 441

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Book Description
Nuclear Magnetic Resonance (NMR) spectroscopy is a powerful and theoretically complex analytical tool. Basic 1H- and 13C-NMR Spectroscopy provides an introduction to the principles and applications of NMR spectroscopy. Whilst looking at the problems students encounter when using NMR spectroscopy, the author avoids the complicated mathematics that are applied within the field. Providing a rational description of the NMR phenomenon, this book is easy to read and is suitable for the undergraduate and graduate student in chemistry. - Describes the fundamental principles of the pulse NMR experiment and 2D NMR spectra - Easy to read and written with the undergraduate and graduate chemistry student in mind - Provides a rational description of NMR spectroscopy without complicated mathematics

Modern NMR Approaches to the Structure Elucidation of Natural Products

Modern NMR Approaches to the Structure Elucidation of Natural Products PDF Author: Antony Williams
Publisher: Royal Society of Chemistry
ISBN: 1849734682
Category : Science
Languages : en
Pages : 533

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Book Description
The Ghanian plant Cryptolepis sanguinolenta is the source of a series of fascinating indoloquinoline alkaloids. The most unusual member of this alkaloid series was initially proposed to be a spiro nonacyclic structure, named cryptospirolepine, and was elucidated in 1993 based on the technologies available at that time. There were, however, several annoying attributes to the structure that bothered analysts for the ensuing 22 years. During the two decades that followed the initial work there have been enormous developments in NMR technology. Using new experimental approaches, specifically homodecoupled 1,1- and 1,n-HD-ADEQUATE NMR experiments developed in 2014, the structure of only a 700 μg sample of cryptospirolepine has been revised and is shown on the cover of this volume. The confluence of the NMR technological and methodological advances that allowed the revision of the structure of cryptospirolepine using a submilligram sample seems a fitting example for this book, which is dedicated to the NMR characterization of various classes of natural products. Volume 2 considers data processing and algorithmic based analyses tailored to natural product structure elucidation and reviews the application of NMR to the analysis of a series of different natural product families including marine natural products, terpenes, steroids, alkaloids and carbohydrates. Volume 1 discusses contemporary NMR approaches including optimized and future hardware and experimental approaches to obtain both the highest quality and most appropriate spectral data for analysis. These books, bringing together acknowledged experts, uniquely focus on the combination of experimental approaches and modern hardware and software applied to the structure elucidation of natural products. The volumes will be an essential resource for NMR spectroscopists, natural product chemists and industrial researchers working on natural product analysis or the characterization of impurities and degradation products of pharmaceuticals that can be as scarce as natural product samples.

NMR of Paramagnetic Molecules

NMR of Paramagnetic Molecules PDF Author: G. N. La Mar
Publisher: Elsevier
ISBN: 1483272451
Category : Science
Languages : en
Pages : 695

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Book Description
NMR of Paramagnetic Molecules: Principles and Applications is a compendium of papers that discusses the physical principles behind the technique of nuclear magnetic resonance, as well as, evaluates the scope and limitation of the applications of NMR in chemistry and biology. These papers emphasize the applications of the technique in chemistry and biochemistry where it widely used, particularlyon NMR experiments in the liquid state. Some papers describe the theoretical factors governing the resonance position and linewidth, and then also interpret magnetic resonance parameters in terms of electronic structure. Another paper investigates the gap between the mathematical complexities of earlier experiments and the operational aspects of chemical information from the spectra. Examples show studies in biochemical molecules and process in events where contact interactions are present either as a result of intrinsic molecular paramagnetism or are just induced through the addition of suitable paramagnetic probes. One paper presents the definitive and controversial results involving stereochemistry and deuterium NMR. This collection of papers will prove useful for nuclear physicists, researchers, and academicians in the field of nuclear physics.