Hydrogen NMR Chemical Shifts
Type of
hydrogen
Structure
Chemica
l Shift,
ppm
Type of
hydrogen
Structure
Chemical
Shift, ppm
Alkyl
R3CH
R is C or H
only
0.9 โ 1.5
Vinylic
(attached to an
alkene)
4.6 โ 5.9
Allylic
1.6-1.9
Aromatic
6 โ 8.5
Alkyne
2.0-2.5
Carboxylic Acid
10.5 โ 12
Adjacent to a
carbonyl
2 โ 2.7
Phenolic
4 โ 12
Benzylic
2.2-2.8
Aldehyde
9-10
Alcohol
R-O-H
0.5-6.0
Amine
R2N-H
0.5-6.0
Adjacent to a
nitrogen
RCH-NR2
2.5-3.5
Adjacent to
single-bonded
oxygen
R is C=O or
H
3.2 โ 4.5
