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1. Introduction
For the application of 1H-NMR spectroscopy to questions that arise in organic chemistry, it is necessary to be aware of the information that is contained in NMR spectra. This can be learned with the help of the two basic approaches that are possible with NMR:a) Make predictions about the structure of chemical compounds based on their NMR spectra.
b) Development of hypothetical spectra based on the structure of a compound.
In this course we will start with the second type of question. As an example the predicted spectrum (I) of the molecule CH3-CHBr2 is shown that has been derived with the help of the rules described in this course. It is in very good agreement with the experimental spectrum (II) of the compound. (Have a good look. This spectrum was recorded on a continuous wave 60MHz spectrometer, as shown by the wiggles at the foot of each line. You don't see things like that anymore - Ed.)
Now try to draw the 1H-NMR
spectrum of the molecule below 
as a line spectrum. Compare your solution to the actual spectrum! Want some help: What do you have to know to construct an NMR spectrum? When you have the answer, continue to the next page. |