Proton, Carbon-13 and Nitrogen Chemical Shift Ranges - Carbon-13*
| Group | Range (ppm) |
|---|---|
| CH3-C | 0 - 30 |
| CH3-N | 10 - 50 |
| CH3-O | 50 - 60 |
| CH2-C | 20 - 45 |
| Cyclopropyl carbons | 0 - 10 |
| CH2-Br | 25 - 45 |
| CH2-C | 35 - 50 |
| CH2-N | 35 - 55 |
| CH2-O | 55 - 80 |
| CH-C | 30 - 55 |
| CH-Br | 45 - 60 |
| CH-Cl | 50 - 70 |
| CH-N | 50 - 75 |
| CH-O | 60 - 90 |
| C-C | 30 - 55 |
| Group | Range (ppm) |
|---|---|
| C-Br | 60 - 75 |
| C-Cl | 70 - 85 |
| C-N | 55 - 75 |
| C-O | 70 - 90 |
| C≡C | 70 - 95 |
| C≡N | 110 - 130 |
| C=C, benzenes; alkenes | 105 - 150 |
| C=C, heteroaromatics | 105 - 150 |
| C=N, heteroaromatics | 145 - 150 |
| C=O, anhydrides | 150 - 175 |
| C=O, esters | 155 - 180 |
| C=O, amides | 160 - 180 |
| C=O, acids | 165 - 190 |
| C=O, aldehydes | 190 - 210 |
| C=O, ketones | 180 - 220 |
* relative to TMS.
Reference: Silverstein, Bassler and Morrill, Ch. 4 (proton data); Breitmaier and Voelter (carbon-13 data); G.C. Levy and R.L. Lichter, "Nitrogen-15 Nuclear Magnetic Resonance Spectroscopy," Wiley-Interscience, NY, 1979 (nitrogen data).