Reference no: EM13166097
1. Draw the strucutre of the suspected molecule.
2. How many different signals are expected for this molecule? That is, how many magnetically different hydrogens are present in the molecule? This is in general determinted by differences in bonding, and distance to an electronegative group.
3. Label the molecule with a's, b's. c's etc., each letter representing one signal, or magnetically equivalent group of hydrogens.
4. Arrange these letters in order of which they should occur on the NMR from farthest downfield (farthest left) to farthest upfield (farthest right). This is usually a function of the proximity of that group to an electronegative group.
5. Determine the theoretical integral ratios of the various groups of signals.
6. Determine the coupling pattern for each signal, using the n + 1 rule.
After determing the above, you should be able to draw a theoretical 1H NMR for each possibility, and then compare it to the actual output that you receive for your actual compound.
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