Important Signals in IR Spectroscopy (no fingerprint Region)
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3200-3600 (broad)
Alcohol
2100-2200
C-C triple bond
2750 and 2850 (two weak signals)
C-H aldehyde
2200-2300
C-N triple bond
1600-1700
C=C
~1650-1820 (strong)
C=O
2200-3600 (very broad)
Carbocyclic Acid
3350-3500
Secondary Amine
~3300
sp hybridized C-H
3000-3100
sp2 C-H
2850-3000
sp3 C-H