a, \(CH_2=CH-CH_2-CH_3\): But - 1 - en

\(CH_3-CH=CH-CH_3\): But - 2 - en

b, \(CH_2=CH-CH_2-CH_2-CH_3\): Pent - 1 - en

\(CH_3-CH=CH-CH_2-CH_3\): Pent - 2 - en

\(CH_2=C\left(CH_3\right)-CH_2-CH_3\): 2 - metylbut - 1 - en

\(CH_3-C\left(CH_3\right)=CH-CH_3\): 2 - metylbut - 2 - en

\(CH_2=CH-CH\left(CH_3\right)-CH_3\): 3 - metylbut - 1 - en

Tham khảo:

 +C₄H6                                       

CH₂=CH-CH=CH₂   :Buta-1,3-đien   (1)

CH₃-CH=C=CH₂      :Buta-1,2-đien    (2)

   +C₅H₈ 

CH₂=C=CH-CH₂-CH₃    ;penta-1,2-đien     (3)

CH₃-CH=C=CH-CH₃     ;penta-2.3-đien      (4)

CH₂=CH-CH=CH-CH₃   ;penta-1,3-đien     (5)

CH₂=C(CH₃)-CH=CH₂   ;2-metyl buta-1,3-đien    (6)

Những ankadien liên hợp :(1),(5)

Tham khảo:
- Đồng phân không phân nhánh: CH₃ – CH₂ – CH₂ – CH₂ – CH₃: pentane.
- Đồng phân phân nhánh:
 : 2 - methylbutane
: 2,2 – dimethylpropane.

CTCT:

\(CH_3-CHCl-CH_3\): 2 - chloropropane

\(CH_3-CH_2-CH_2Cl\): 1 - chloropropane

$C_5H_{10}$

C=C-C-C-C: Pent-1-en

C-C=C-C-C: Pent-2-en

C=C(C)-C-C: 2-metylbut-1-en

C=C-C(C)-C: 3-metylbut-1-en

C-C(C)=C-C: 2-metylbut-2-en

$C_6H_{12}$

C=C-C-C-C-C: hex-1-en

C=C(C)-C-C-C: 2-metylpent-1-en

C=C-C(C)-C-C: 3-metylpent-1-en

C=C-C-C(C)-C: 4-metylpent-1-en

C=C(C)-C(C)-C: 2,3-đimetylbut-1-en

C=C-C(C)(C)-C: 3,3-đimetylbut-1-en

C-C=C-C-C-C: hex-2-en

C-C(C)=C-C-C: 2-metyl-pent-2-en

C-C=C(C)-C-C: 3-metyl-pent-2-en

C-C(C)=C(C)-C: 2,3-đimetylbut-2-en

C-C-C=C-C-C: hex-3-en

C-C=C-C(C)-C: 4-metylpent-2-en

C=C(C-C)-C-C: 2-etylbut-1-en