Wave number of bands (cm−1)

Molecular motion

Functional group

2966

C=CH2

Vinyl

2943

C-H Stretch

Alkyl

2924

C-H Stretch

Alkyl

1377

CH3 Bend

Alkanes

1358

S=O Stretch

Sulfonates

1215

C-N Stretch

Amines

1169

C-O Strong

Tertiary alcohol

1080

C-O Stretch

Primary alcohol

1053

S=O Stretch

Sulfoxides

984

C-H Bending

trans RCH≡CHR

845

C-H Bend (para)

Aromatic Bending