Strategies

  • Helmut Duddeck
  • Wolfgang Dietrich
  • Gábor Tóth

Abstract

NMR spectra — especially 2D spectra — contain a wealth of information. It is important, therefore, to be certain of the relative value of each single piece of information. There are “soft” clues or hints that can only be evaluated through experience and a knowledge of analogous findings, i.e., on the basic of empirical evidence. A typical example is the evaluation of the chemical shifts (δ) of an atom by taking into account the nature of its neighboring atoms. Such hints should, whenever possible, be verified by experimental results. Information from characteristic S ranges are more reliable. For instance, it is clear that a 13C signal with δ = 210 corresponds to a carbonyl carbon and that this carbon cannot be a member of a carboxyl function. Many 1H, 1H and 13C, 1H coupling constants belong to the same category.

Keywords

Sugar Saccharide Carboxyl Carbonyl Methoxy 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • Helmut Duddeck
    • 1
  • Wolfgang Dietrich
    • 2
  • Gábor Tóth
    • 3
  1. 1.Institute of Organic ChemistryUniversity of HannoverHannoverGermany
  2. 2.Faculty of ChemistryRuhr University BochumBochumGermany
  3. 3.Technical Analytical Research Group of the Hungarian Academy of Sciences, Institute for General and Analytical ChemistryTechnical University BudapestBudapestHungary

Personalised recommendations