NMR chemical shifts

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Last updated 6:31 AM on 6/14/26
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18 Terms

1
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Methyl (R-CH3)

0.9 ppm

2
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Methylene (R-CH2-R)

1.2 ppm

3
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Methine (CH)

1.7 ppm

4
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Allylic

2 ppm

5
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Alkynyl

2.5 ppm

6
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Aromatic methyl

2.5 ppm

7
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Alkyl halide

2-4 ppm

8
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Vinylic

4.5-6.5 ppm

9
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Aryl

6.5-8 ppm

10
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Alcohol (R-O-H)

2-5 ppm

11
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Aldehyde

10 ppm

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Carboxylic acid

12 ppm

13
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Effect of neighboring oxygen of alcohol or ether on alpha protons

+2.5

14
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Effect of neighboring oxygen of an alcohol or either on beta protons

+0.5

15
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Effect of neighboring oxygen of an ester on alpha proton

+3

16
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Effect of neighboring oxygen of an ester on beta protons

+0.6

17
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Effect of neighboring carbonyl group on alpha protons

+1

18
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Effect of neighboring carbonyl group on beta protons

+0.2