BRAINCAKE1H NMR Spectroscopy
Proton (1H) NMR spectroscopy gives information about the hydrogen atoms in an organic molecule. Hydrogen atoms that are in the same position relative to the rest of the molecule are in the same chemical environment. They absorb at the same frequency and give one peak.
The position of each peak is its chemical shift, δ, measured in ppm relative to the reference compound tetramethylsilane (TMS), which is given δ = 0 ppm. Most 1H peaks lie between 0 and 12 ppm.
A 1H NMR spectrum tells you two basic things:
• the number of peaks = the number of different proton environments
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More in NMR Spectroscopy
- The TMS Standard
- Deuterated Solvents
- 13C NMR Spectroscopy
- Interpreting 13C NMR Spectra
- Relative Peak Areas
- Spin-Spin Splitting
- The n+1 Rule
- Identifying O-H and N-H Protons with D2O
All 12 lessons in NMR Spectroscopy · All OCR A-level Organic Chemistry topics