IR functional groups (wavenumbers, cm^-1)

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9 Terms

1
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NH (amines/amides)

3200-3500 (2 peaks for primary, 1 peak for secondary)

2
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OH (alcohol)

3200-3600 (broad peak)

3
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OH (carboxylic acid)

2500-3300 (broad peak)

4
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CH (sp)

3200-3300

5
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CH (sp2)

3000-3100

6
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CH (sp3)

2850-3000

7
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CH (aldehyde)

2700-2800 & 2800-2900 (1 peak in each region, aka Fermi doublet)

8
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C≡C or C≡N

2100-2300

9
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C=O (carbonyl)

1600-1850