3300&3400
NH2
3300
C≡C-H (s,sharp)
N-H
3000
O-H
2250
C ≡N (s)
2100-2250
C ≡C(w)
1450-1625
Benzene ring(m/w, number of peaks)
1750-1820
Acid chloride
1750&1820
Acid anhydride
1745
Ester
1730
Aldehyde
Carboxylic acid
1715
Ketone
1640-1690
Amide
1635-1690
C=C(w)
1350&1530
NO2
NH2
3300&3400
C ≡ C-H
3300, s , sharp
N-H
3300
O-H
3000
C ≡ N
2250, s
C ≡ C
2100-2250, w
Benzene ring
1450-1625, m/w, # of peaks
1750-1820
Acid chloride
1750&1820
Acid anhydride
Ester
1745