Alkane C-H
2850-2960 M
Alkene
=C-H
C=C
3020-3100M
1640-1680M
Alkyne
triplebond C-H
(C triple bond C)
3300 S
2100-2260 M
Alcohol
O-H
3400-3650 S broad
Aromatic ring
1660-2000 W
Amine
N-H
3300-3500 M
Carbonyle Compound
C=O
1670-1780 S
Carboxylic Acid
C=O-O-H
2500-3100 S Broad