NMR Chemical shifts

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Last updated 10:22 AM on 9/11/26
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19 Terms

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Methyl

~0.9 ppm

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Methylene

~1.2 ppm

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Methine

~1.7 ppm

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Oxygen of an alcohol or ether

+2.5

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Oxygen of an ester

+3

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Carbonyl group

+1

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Allylic

~2 ppm

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Alkynyl

~2.5 ppm

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Aromatic methyl (Benzylic)

~2.5 ppm

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Alkyl halide

2-4 ppm

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Alcohol

2-5 ppm

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Vinylic (alkenes)

4.5-6.5 ppm

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Aryl (aromatic rings)

6.5-8 ppm

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Aldehyde

8-10 ppm

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Carboxylic acid

10-12 ppm

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Pattern for ethyls

2H quartet → 3H triplet

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Pattern for isopropyls

1H septet → 6H doublet

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Pattern for alcohol

broad singlet

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Pattern for tert butyls

9H singlet