IB CHEMISTRY

Structure 3.2.2

Functional Groups

Functional groups give characteristic physical and chemical properties to a compound.

ClassFunctional Group NameStructureSuffix/Prefix
AlkaneAlkylCāˆ’HC-H (Saturated)-ane
AlkeneAlkenylC=CC=C (Unsaturated)-ene
AlkyneAlkynylC≔CC \equiv C-yne
AlcoholHydroxylāˆ’OH-OH-ol (or hydroxy-)
EtherEtherRāˆ’Oāˆ’R′R-O-R'-oxyalkane
AldehydeCarbonyl (terminal)āˆ’CHO-CHO-al
KetoneCarbonyl (non-terminal)āˆ’COāˆ’-CO--one
Carboxylic AcidCarboxylāˆ’COOH-COOH-oic acid
EsterEsterāˆ’COOāˆ’-COO--oate
AmideCarboxamideāˆ’CONH2-CONH_2-amide
AmineAmineāˆ’NH2-NH_2-amine (or amino-)
NitrileNitrileāˆ’CN-CN-nitrile
ArenePhenylC6H5āˆ’C_6H_5- (Benzene Ring)-benzene (or phenyl-)
HalogenoalkaneHalogenoāˆ’X-X (F, Cl, Br, I)fluro-, chloro-, bromo-, iodo-