1. C13 NMR 1H 13C 15N 19F Common nuclei which have a magnetic moment:
(Odd mass number or even mass number and odd atomic number)

2. C13 Only 1.1% of the carbon atoms in a sample are C13
C12 does not have a magnetic moment.

3. C13 NMR Signal weak No C-C coupling Strong C-H coupling
Large Chemical Shifts

4. C13 Chemical Shifts ppm from TMS 65 - 90 0 - 35 15 -40 100 - 150

5. Proton NMR Spectrum

6. Carbon NMR Spectrum
(Proton Decoupled)

7. Peak height (area) NOT proportional to number of C atoms.

8. Proton decoupled CMR

9. Proton coupled CMR