Classification

Group

Bond

Rang cm−1

Alkanes

R-CH3

C-H

2972 - 2952, 2882 - 2662, 1475 - 1435, 1380 - 1375

C-(CH3)2

C-C

1175 - 1165, 1160 - 1135

C-(CH3)3

C-C

1255 - 1245, 1250 - 1200

R-C-(CH2)4-O

C-C

742 - 734

Alkenes

CH=CH Cis

C-H, C=C

3040 - 3010, 730 - 650, 1662 - 1631

Alcohols

(R)3-C-O-H

O-H, C-O

3400 - 3200, 1410 - 1310, 1210 - 1110, 1075 - 1000

Ketones

C=C-COR

C=O

1685 - 1665

Quinones

C=O

1690 - 1660

Halogens

Ring CF2

C-F

1350 - 1140

Silicons

Si-O-Si, Si-O-C

Si-O-Si, Si-O-C

1100 - 1000

Sulfur

C-SO2-O-C

S=O, S-O, S-C

1375 - 1335, 1195 - 1165, 1020 - 850, 830 - 690, 700 - 600