Wave number (cm−1)

Bond source

Functional group

507.30

C-Br stretch

Alkyl halides

644.25

C-Cl stretch

Alkyl halides

875.71

=C-H bend

Alkenes

1020.38

C-N stretch

Aliphatic amines

1108.14

C-N stretch

Aliphatic amines

1417.73

C-H stretch

Alkanes

1539.25

N-O asymmetric stretch

Nitro compounds

2274.15

-C ≡≡ C-stretch

Alkynes

3428.58

O-H stretch

Alcohols and phenols

3757.46

O-H stretch

Alcohols and phenols

3862.58

O-H stretch

Alcohols and phenols

3942.63

O-H stretch

Alcohols and phenols