�
Structural unit
Frequency, cm
-1
�
Stretching vibrations (single bonds)
�
sp
C�H
3310-3320
�
sp
2
C�H
3000-3100
�
sp
3
C�H
2850-2950
�
sp
2
C�O
1200
�
sp
3
C�O
1025-1200
Table 13.4 (p 519)
Infrared Absorption Frequencies