Author: Sture Forsen
Publisher:
ISBN:
Category :
Languages : sw
Pages :

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Author: Sture Forsén
Publisher:
ISBN:
Category : Hydrogen bonding
Languages : en
Pages : 22

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Author: S. Forsén
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: B. I. Ionin
Publisher: Springer Science & Business Media
ISBN: 1468417851
Category : Science
Languages : en
Pages : 396

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Book Description
In recent years high-resolution nuclear magnetic resonance spec troscopy has found very wide application in organie chemistry in structural and physicochemical investigations and. also in the study of the characteristics of organic compounds which are re lated to the distribution of the electron cloud in the molecules. The vigorous development of this method, which may really be re garded as an independent branch of science, is the result of ex tensive progress in NMR technology, the refinement of its theory, and the accumulation of large amounts of experimental material, which has been correlated by empiricallaws and principles. The literature directly concerned with the NMR method and its applica tion has now grown to such an extent that a complete review of it is practically impossible. Therefore the authors have limited themselves to an examination of only the most important, funda mental, and general investigations. The book consists of six chapters. In the first chapter we have attempted to present the fundamentals of the NMR method in such a way that the reader with little knowledge of the subject will be able to use the method in practical work for investigating simple compounds and solving simple problems. The three subsequent chapters give a deeper analysis of the method, while the last two chapters and the appendix illustrate the various applications of NMR spectroscopy in organic chemistry.

Author: David W. Boykin
Publisher: CRC Press
ISBN: 1000141594
Category : Science
Languages : en
Pages : 336

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Book Description
This book provides a comprehensive review of the application of 17O NMR spectroscopy to organic chemistry. Topics include the theoretical aspects of chemical shift, quadrupolar and J coupling; 17O enrichment; the effect of steric interactions on 17O chemical shifts of functional groups in flexible and rigid systems; the application of 17O NMR spectroscopy to hydrogen bonding investigations; mechanistic problems in organic and bioorganic chemistry; and 17O NMR spectroscopy of oxygen monocoordinated to carbon in alcohols, ethers, and derivatives. Recent results that show correlations between molecular geometry, determined by X-ray studies and estimated by molecular mechanics calculations, and 17O chemical shifts are also covered. 17O Spectroscopy in Organic Chemistry provides important reference information for organic chemists and other scientists interested in 17O NMR spectroscopy as a tool for obtaining new structural and chemical data about organic molecules.

Author: F. Scheinmann
Publisher: Elsevier
ISBN: 1483280772
Category : Science
Languages : en
Pages : 213

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Book Description
An Introduction to Spectroscopic Methods for the Identification of Organic Compounds, Volume 1: Nuclear Magnetic Resonance and Infrared Spectroscopy discusses how spectral data can be translated into the structural formula of organic compounds and provides reference data and revised correlation tables for the initiated. The text describes high resolution nuclear magnetic resonance spectroscopy; the applications of nuclear magnetic resonance spectroscopy in organic chemistry; and correlation tables for nuclear magnetic resonance spectra. Nuclear magnetic resonance spectroscopy seminar problems and answers; the theoretical basis of infrared spectroscopy; and the applications of infrared spectroscopy to organic chemistry are also encompassed. The book further tackles infrared spectroscopic problems and answers, as well as correlation tables for infrared spectra.

Author: Jeffrey H. Simpson
Publisher: Academic Press
ISBN: 0123849705
Category : Science
Languages : en
Pages : 591

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Book Description
"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"--

Author:
Publisher: Newnes
ISBN: 0444594140
Category : Science
Languages : en
Pages : 448

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Book Description
The progress in nuclear magnetic resonance (NMR) spectroscopy that took place during the last several decades is observed in both experimental capabilities and theoretical approaches to study the spectral parameters. The scope of NMR spectroscopy for studying a large series of molecular problems has notably broadened. However, at the same time, it requires specialists to fully use its potentialities. This is a notorious problem and it is reflected in the current literature where this spectroscopy is typically only used in a routine way. Also, it is seldom used in several disciplines in which it could be a powerful tool to study many problems. The main aim of this book is to try to help reverse these trends.This book is divided in three parts dealing with 1) high-resolution NMR parameters; 2) methods for understanding high-resolution NMR parameters; and 3) some experimental aspects of high-resolution NMR parameters for studying molecular structures. Each part is divided into chapters written by different specialists who use different methodologies in their work. In turn, each chapter is divided into sections. Some features of the different sections are highlighted: it is expected that part of the readership will be interested only in the basic aspects of some chapters, while other readers will be interested in deepening their understanding of the subject dealt with in them. - Shows how NMR parameters are useful for structure assignment as well as to obtain insight on electronic structures - Emphasis on conceptual aspects - Contributions by specialists who use the discussed methodologies in their everyday work

Author: L. M. Jackman
Publisher: Elsevier
ISBN: 1483280942
Category : Science
Languages : en
Pages : 474

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Book Description
Application of Nuclear Magnetic Resonance Spectroscopy in Organic Chemistry, Second Edition covers the theoretical background necessary for the intelligent application of NMR spectroscopy to common problems encountered in organic chemistry. This book is composed of five parts, and begins with introduction to the theory and practice of nuclear magnetic resonance. The succeeding chapter deals with the theory of chemical effects in NMR spectroscopy. These topics are followed by a discussion on the application of chemical shift to organic compound analysis and the principles of the spin-spin coupling .The final chapter considers the applications of time- dependent phenomena in NMR spectroscopy. This book will prove useful to analytical chemists and researchers in the allied fields.

Author: Richard A. Nyquist
Publisher: Academic Press
ISBN: 0125234759
Category : Science
Languages : en
Pages : 1103

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Book Description
This book teaches the analyst why it is advantageous to obtain vibrational data under different physical phases. Molecular vibrations are affected by change in physical phase, and knowledge of how certain molecular vibrations are affected by change in the chemical environment improves the analyst's ability to solve complex chemical problems. This book is invaluable for students and scientists engaged in analytical and organic chemistry, since application of IR and Raman spectroscopy is essential in identifying and verifying molecular structure. This reference provides analysts with information that enables them to acquire the maximum amount of information when sampling molecular vibrations via IR and Raman spectroscopy. Key Features * Explains why it is advantageous to obtain vibrational data under different physical phases * Compiles many vibrational studies into a single compendium * Lists group frequencies in different physical phases * Reveals that some group frequencies are more affected than others by changes in the physical phase * Demonstrates that in-phase and out-of-phase vibrations of the same functional group are not equally affected * Describes how solute-solvent complexes differ with changes in the solvent system * Shows that the amount of Fermi resonance between a fundamental vibration and a combination or overtone is altered with change of physical phase * Written by an internationally recognized expert