Characteristic Proton NMR Chemical Shifts

Inquiry
Structure Chemical Shift (ppm)
R-CH3 0.9
R-CH2-R 1.3
R3-C-H 1.5
C=C-H 5.2-5.7
C=C-H 4.6-5
C=C-CH 1.7
C≡C-H 1.7-3.1
Ar-H 6-9.5
Ar-C-H 2.2-2.5
F-C-H 4-4.5
Cl-C-H 3.7
Br-C-H 3.5
I-C-H 3.2
H-C-OH 3.4-4
R-C-OH 1-5.5
RO-C-H 3.3-4
RCOO-C-H 3.7-4.1
H-C-COOR 2.1
H-C-COOH 2-2.6
RCOOH 9-12
O=C-C-H 2.1-2.6
R-(C=O)H 9.5-9.9
Ar-OH 4-10
C=C-OH 15-17
C-SH 3.4-4
RNH2 0.5-5
R-CONH-R 5-9
ArNH2 3-5
Structure Chemical Shift (ppm)
C=O (in ketones) 205-220
C=O (in aldehydes) 190-200
C=O (in acids and esters) 160-185
C in aromatic rings 125-150
C=C (in alkenes) 115-140
R-CH2O- 50-90
R-CH2Cl 30-60
R-CH2NH2 30-65
R3C-H 25-35
CH3CO- 20-50
R2CH2 16-25
R-CH3 10-15

 

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