CH2=C=CH-CH2-CH2-CH3 (1, 2 HEXADIENA)
CH2=CH-CH=CH-CH2-CH3 (1,3 HEXADIENA)
CH2=CH-CH2-CH=CH-CH3 (1,4 HEXADIENA)
CH2=CH-CH2-CH2-CH=CH2 (1,5 HEXADIENA)
CH3-CH=C=CH-CH2-CH3 (2,3 HEXADIENA)
CH3-CH=CH-C=CH-CH3 (2,4 HEXADIENA)
Izomerii geometrici sunt cei cis si trans.