1. C2.8 Analytical Techniques
NMR spectroscopy
C2.8 Analytical Techniques
24 November 2018

2. 1H spectroscopy Sometimes known as proton spectroscopy
Very similar to 13C, however this time we are looking at the environment that hydrogen atoms are in.
The spectrum shows:
The number of proton environments (number of peaks)
The types of proton environments (chemical shift)
The number of equivalent protons (relative height of peaks)

3. Identifying Proton Environments

4. Identifying Proton Environments

5. Knowledge Check
Identify the different proton environments in the following compounds:
Ethanol
Pentan-1-ol
Petan-3-ol
Propanal
Methyl benzene

6. Worked Example

7. Knowledge Check
Identify the number of proton environments and identify the chemical shifts in the following molecules
Ethane
Propane
Propanoic acid
2-methylpropanal
Given this information draw a possible spectrum for each of these molecules taking care with the height of each peak.

8. Past Paper Question
Try the past paper question which combines all the spectra we have looked at to date. We will mark it in 10 minutes.