Interpretation of Organic Spectra
Although there are a number of books in this field, most of them lack an introduction of comprehensive analysis of MS and IR spectra, and others do not provide up-to-date information like tandem MS. This book fills the gap. The merit of this book is that the author will not only introduce knowledge for analyzing nuclear magnetic resonance spectra including 1H spectra (Chapter 1), 13C spectra (Chapter 2) and 2D NMR spectra (Chapter 3), he also arms readers systemically with knowledge of Mass spectra (including EI MS spectra and MS spectra by using soft ionizations) (Chapter 4) and IR spectra (Chapter 5). In each chapter the author presents very practical application skills by providing various challenging examples. The last chapter (Chapter 6) provides the strategy, skills and methods on how to identify an unknown compound through a combination of spectra. Based on nearly 40 years researching and teaching experience, the author also proposes some original and creative ideas, which are very practical for spectral interpretation.
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13C spectrum 2D NMR spectra 6H ppm absorption bands alkyl anticipated structure aromatic assignment benzene ring carbonyl group CH2 group chemical bonds chemical shift values cm_1 connected corresponds COSY spectrum coupled splits coupling constant data summarized deduced DEPT spectrum DEPT-135 spectrum determined double bond electron enlarged HMBC spectrum enlarged img spectrum example fluorine fragment ions functional groups H spectrum heteroatom heteronuclear shift correlation HMBC spectrum HSQC hydrogen atoms hydroxyl groups img spectrum impurities integral value intensity interpretation isotopic listed in Table locally enlarged HMBC locally enlarged img locally enlarged spectrum long-range couplings mass spectrum mass-to-charge ratio methyl groups molecular formula molecular ion peak molecular weight molecule nitrogen atom nuclei obtained oxygen atom peak sets peak shapes phenyl phenyl ring quaternary carbon atom reactive hydrogen atoms sample shown in Figure simple cleavages solvent peak spectroscopy spectrum are listed spectrum of compound substituted triplet unknown compound contains unknown structure wavenumber