Appendix F: Infrared Absorptions of Some Adlehydes and Ketones

Table F1: Infrared Absorptions of Some Aldehydes and Ketones

Carbonyl type	Example	Absorption (cm^–1)
Saturated aldehyde	CH₃CHO	1730
Aromatic aldehyde	PhCHO	1705
α,β-Unsaturated aldehyde	H₂C═CHCHO	1705
Saturated ketone	CH₃COCH₃	1715
Cyclohexanone		1715
Cyclopentanone		1750
Cyclobutanone		1785
Aromatic ketone	PhCOCH3	1690
α,β-Unsaturated ketone	H₂C═CHCOCH₃	1685

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