Mass Spectra Of Organic Compounds

Interpretation of Mass Spectra of Organic Compounds outlines the basic instrumentation, sample handling techniques, and procedures used in the interpretation of mass spectra of organic compounds. The fundamental concepts of ionization, fragmentation, and rearrangement of ions as found in mass spectra are covered in some detail, along with the rectangular array and interpretation maps. Computerization of mass spectral data is also discussed. This book consists of nine chapters and begins with a historical overview of mass spectrometry and a discussion on some important developments in the field, along with a summary of interpretation objectives and methods. The following chapters focus on instruments, ion sources, and detectors; recording of the mass spectrum and the instrumental and sample variables affecting the mass spectrum; sample introduction systems; and fragmentation reactions. Correlations as applied to interpretations are also considered, with emphasis on applications of the branching rule as well as beta-bond and alpha-bond cleavages. Example interpretations, calculations, data-processing procedures, and computer programs are included. This monograph is intended for organic chemists, biochemists, mass spectroscopists, technicians, managers, and others concerned with the whys and wherefores of mass spectrometry.

Mass Spectrometry of Organic Ions covers the underlying theories and major applications of mass spectrometry. This 13-chapter book starts with a survey of the mechanisms by which organic ions can decompose and rearrange, as well as the generalized concept in terms of physical-organic chemistry. The discussion then shifts to the advantages and potential of mass spectrometry in structure determination by the elucidation of the empirical formulas of organic ions. Considerable chapters are devoted to the detailed correlations and mechanisms of the mass spectra of long-chain esters, alkylbenzenes, a variety of natural products, aliphatic compounds, and terpenes. The remaining chapters demonstrate the illustrative power of mass spectrometry in structure of petroleum, which is composed of hydrocarbon mixture. This book will be of great benefit to organic and analytical chemists, scientists, and students.

Extensively revised and updated, this new edition, as in previous editions, emphasizes the point that the most important part of learning how to interpret unknown mass spectra is to practice interpreting mass spectra.

Although numerical data are, in principle, universal, the compilations presented in this book are extensively annotated and interleaved with text. This translation of the second German edition has been prepared to facilitate the use of this work, with all its valuable detail, by the large community of English-speaking scientists. Translation has also provided an opportunity to correct and revise the text, and to update the nomenclature. Fortunately, spectroscopic data and their relationship with structure do not change much with time so one can predict that this book will, for a long period of time, continue to be very useful to organic chemists involved in the identification of organic compounds or the elucidation of their structure. Klaus Biemann Cambridge, MA, April 1983 Preface to the First German Edition Making use of the information provided by various spectroscopic tech niques has become a matter of routine for the analytically oriented organic chemist. Those who have graduated recently received extensive training in these techniques as part of the curriculum while their older colleagues learned to use these methods by necessity. One can, therefore, assume that chemists are well versed in the proper choice of the methods suitable for the solution of a particular problem and to translate the experimental data into structural information.

An Introduction to Spectroscopic Methods for the Identification of Organic Compounds, Volume 2 covers the theoretical aspects and some applications of certain spectroscopic methods for organic compound identification. This book is composed of 10 chapters, and begins with an introduction to the structure determination from mass spectra. The subsequent chapter presents some mass spectrometry seminar problems and answers. This presentation is followed by discussions on the problems concerning the application of UV spectroscopy and electron spin resonance spectroscopy. Other chapters deal with some advances and development in NMR spectroscopy and the elucidation of structural formula of organic compounds by a combination of spectral methods. The final chapter surveys seminar problems and answers in the identification of organic compounds using NMR, IR, UV and mass spectroscopy. This book will prove useful to organic and analytical chemists.

The Sixth Edition Of This Widely Used Text Includes New Examples / Spectra / Explanations / Expanded Coverage To Update The Topic Of Spectroscopy. The Artwork And Material In All Chapters Has Been Revised Extensively For Students Understanding.New To This Edition * New Discussion And New Ir, 1H Nmr, 13C Nmr And Ms Spectra. * More Important Basic Concepts Highlighted And Put In Boxes Throughout This Edition. * Chapters On 1H Nmr And 13C Nmr Rewritten And Enlarged. More On Cosy, Hetcor, Dept And Inadequate Spectra. * A Rational Approach For Solving The Structures Via Fragmentation Pathways In Ms. * Increased Power Of The Book By Providing Further Extensive Learning Material In This Revised Edition. * A Quick And An Easy Access To Topics In Ugc Model Curricula.With Its Comprehensive Coverage And Systematic Presentation The Book Would Serve As An Excellent Text For B.Sc. (Hons.) And M.Sc. Chemistry Students. It Provides Knowledge To Excel At Any Level, University Examination, Competitive Examinations E.G. Net And Before Interview Boards.

This succinct compilation of essential reference data for the interpretation of NMR, IR, UV/Vis, and mass spectra also provides a hands-on guide for interpreting experimental spectral data and elucidating the structure of the respective compounds behind them. This fourth edition of the highly successful and concise textbook contains about 20% new data.