Table of Characteristic Proton NMR Shifts
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type of proton | type of compound | chemical shift range, ppm |
RCH3 | primary aliphatic | 0.9 |
R2CH2 | secondary aliphatic | 1.3 |
R3CH | tertiary aliphatic | 1.5 |
C=C-H | vinylic | 4.6-5.9 |
C=C-H | vinylic, conjugated | 5.5-7.5 |
C(triple bond))C-H | acetylenic | 2-3 |
Ar-H | aromatic | 6-8.5 |
Ar-C-H | benzylic | 2.2-3 |
C=C-CH3 | allylic | 1.7 |
HC-F | fluorides | 4-4.5 |
HC-Cl | chlorides | 3-4 |
HC-Br | bromides | 2.5-4 |
HC-I | iodides | 2-4 |
HC-OH | alcohols | 3.4-4 |
HC-OR | ethers | 3.3-4 |
RCOO-CH | esters | 3.7-4.1 |
HC-COOR | esters | 2-2.2 |
HC-COOH | acids | 2-2.6 |
HC-C=O | carbonyl compounds | 2-2.7 |
RCHO | aldehydic | 9-10 |
ROH | hydroxylic | 2-4 |
ArOH | phenolic | 4-12 |
C=C-OH | enolic | 15-17 |
RCOOH | carboxylic | 10.0-13.2 |
RNH2 | amino | 1-5 |