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Proton NMR shifts
The proton chemical shifts of a selection of funtional groups
Question | Answer |
---|---|
Cyclopropane C3H6 | 0.2 |
Primary R-CH3 | 0.9 |
Secondary R2-CH2 | 1.3 |
Tertiary R3-C-H | 1.5 |
Vinylic C=C-H | 4.6-5.9 |
Acetylenic triple bond,CC-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 |
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 R-(H-)C=O | 9-10 |
Hydroxylic R-C-OH | 1-5.5 |
Phenolic Ar-OH | 4-12 |
Enolic C=C-OH | 15-17 |
Carboxylic RCOOH | 10.5-12 |
Amino RNH2 | 1-5 |