BRAINCAKE13C NMR Spectroscopy
13C NMR spectroscopy gives information about the carbon atoms in a molecule. Only about 1% of carbon atoms are 13C; the rest are 12C, which gives no signal. Modern spectrometers are sensitive enough to detect this small fraction.
Each peak in a 13C spectrum represents one carbon environment. Carbon atoms are in the same environment if they are bonded to exactly the same groups, which usually happens because of symmetry in the molecule. So:
number of peaks = number of different carbon environments
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More in NMR Spectroscopy
- Nuclear Magnetic Resonance
- Chemical Shift
- The TMS Standard
- Deuterated Solvents
- Interpreting 13C NMR Spectra
- 1H NMR Spectroscopy
- Integration Traces
- Spin-Spin Splitting
All 11 lessons in NMR Spectroscopy · All AQA A-level Chemistry topics