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Proton Chemical Shifts

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Updated 2009-02-15 23:14

Proton Chemical Shifts for 1H NMR

Proton TypeChemical Shift in ppm
Cyclopropane0.2
Primary RCH30.9
Secondary R2CH21.3
Tertiary R3C-H1.5
Vinylic C=C-H4.6-5.9
Acetylenic C≡C-H2-3
Aromatic Ar-H6-8.5
Benzylic Ar-C-H2.2-3
Allylic C=C-CH31.7
Fluorides H-C-F4-4.5
Chlorides H-C-Cl3-4
Bromides H-C-Br2.5-4
Iodides H-C-I2-4
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Proton TypeChemical Shift in ppm
Alcohols H-C-OH3.4-4
Ethers H-C-OR3.3-4
Esters RCOO-C-H3.7-4.1
Esters H-C-COOR2-2.2
Acids H-C-COOH2-2.6
Carbonyl Compounds H-C-C=O2-2.7
Aldehydic9-10
Hydroxylic RO-H1-5.5
Phenolic ArO-H4-12
Enolic C=C-O-H15-17
Carboxylic RCOO-H10.5-12
Amino RNH21-5
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Reference: R. T. Morrison and R. N. Boyd "Organic Chemistry" 6th Edition, Prentice-Hall, Englewood Cliffs, New Jersey, 1992 (ISBN=0-13-643669-2).

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