Proton Chemical Shifts
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Updated
2009-02-15 23:14
Proton Chemical Shifts for 1H NMR
| Proton Type | Chemical Shift in ppm |
|---|---|
| Cyclopropane | 0.2 |
| Primary RCH3 | 0.9 |
| Secondary R2CH2 | 1.3 |
| Tertiary R3C-H | 1.5 |
| Vinylic C=C-H | 4.6-5.9 |
| Acetylenic C≡C-H | 2-3 |
| Aromatic Ar-H | 6-8.5 |
| Benzylic Ar-C-H | 2.2-3 |
| Allylic C=C-CH3 | 1.7 |
| Fluorides H-C-F | 4-4.5 |
| Chlorides H-C-Cl | 3-4 |
| Bromides H-C-Br | 2.5-4 |
| Iodides H-C-I | 2-4 |
| Proton Type | Chemical Shift in ppm |
|---|---|
| Alcohols H-C-OH | 3.4-4 |
| Ethers H-C-OR | 3.3-4 |
| Esters RCOO-C-H | 3.7-4.1 |
| Esters H-C-COOR | 2-2.2 |
| Acids H-C-COOH | 2-2.6 |
| Carbonyl Compounds H-C-C=O | 2-2.7 |
| Aldehydic | 9-10 |
| Hydroxylic RO-H | 1-5.5 |
| Phenolic ArO-H | 4-12 |
| Enolic C=C-O-H | 15-17 |
| Carboxylic RCOO-H | 10.5-12 |
| Amino RNH2 | 1-5 |
Reference: R. T. Morrison and R. N. Boyd "Organic Chemistry" 6th Edition, Prentice-Hall, Englewood Cliffs, New Jersey, 1992 (ISBN=0-13-643669-2).
