Problems

These problems are designed to help you progress through gradually more and more difficult NMR problems. For this reason they should be solved in order. You should have already thoroughly read the sections on ¹H and ¹³C NMR theory before trying these tutorial problems.

Three types of problem are provided:

1. The first gives you a NMR spectrum and a molecular structure and you should attempt to assign the peaks to the correct protons or carbon atoms. Answers are given to these problems. (designed for CH226 and CH230)
2. The intermediate problems are more challenging in that they ask you to interpret a spectrum without the structure. No answers are given. (designed for CH231)
3. The difficult problems are there to challenge you. No answers are given (designed for CH426)

• Identification of the number of non-equivalent protons and carbon atoms
• Look at the chemical shift of the peaks based upon the proximity to an electronegative element.
• Use spin-spin splitting to identify which proton groups are neighbors