Question

how many isomers does a hexene have?

Answer 1

the isomers of hexEne are

CH2=CH-CH2-CH2-CH2-CH3... 1-hexene

CH3-CH=CH-CH2-CH2-CH3... 2-hexene... (cis and trans)

CH3-CH2-CH=CH-CH2-CH3... 3-hexene... (cis and trans)

.. ... ..CH3
.. ... ..|
CH2=C-CH2-CH2-CH3.. .2-methyl-1-pentene

.. ... .......CH3
.. ... ... ....|
CH2=CH-CH-CH2-CH3.. .3-methyl-1-pentene

.. ... ......... ....CH3
.. ... ... ..... ....|
CH2=CH-CH2-CH-CH3.. .4-methyl-1-pentene

.. .. ..CH3
.. ... .|
CH3-C=CH-CH2-CH3... 2-methyl-2-pentene... (cis and trans)

.. .. .... ...CH3
.. ... .. ... |
CH3-CH=C-CH2-CH3... 3-methyl-2-pentene... (cis and trans)

.. .. .... ..... ..CH3
.. ... .. ... .. ...|
CH3-CH=CH-CH-CH3... 4-methyl-2-pentene... (cist and trans)

.. .. .. CH3
.. .. .. |
CH2=C-CH-CH3.. 2,3-dimethyl1-butene
.. .. .. .. |
.. .. .. ..CH3

.. .. .. .. ..CH3
.. .. .. .. ...|
CH2=CH-C-CH3.. 3,3-dimethyl1-butene
.. .. .. .. ...|
.. .. .. .... CH3

.. .. .. CH3
.. .. .. |
CH3-C=C-CH3.. 2,3-dimethyl-2-butene...
.. .. .. .. |
.. .. .. ..CH3

... .. ..CH2-CH3
.. . .. .|
CH2=C-CH2-CH3.. 2-ethyl-1-butene.


and there are a few cyclo compounds as well..
cyclohexane
methylcyclopentane
ethylcyclobutane
1,2-dimethylcyclobutane.. (cis and trans)
1,3-dimethylcyclobutane.. (cis and trans)
1,2,3-trimethylcycloppropane... (3 variations of cis and trans)
1-ethyl-2-methylcyclopropane.. (cis and trans)

**********
I count 13 non-cyclic + 7 cyclic + 10 additional stereoisomers.

so.. 20 structural isomers + 10 stereoisomers = 30 isomers total

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perhaps the other answerer misread the question. isomers of hexENE.. not hexane.. 2-methylpentane is not an isomer of hexene...etc.

Answer 2

Answer:

Hexene has 13 different isomers.

Explanation:

• C₆H₁₂ or Hexene is said to be having 13 isomers.
• Depending on the positions of double bond in the chain these isomers are created.
• The most common industrially used isomer of hexene is 1-hexene
• Hexene is used as comonomer in the manufacture of polythene.
• The list of Isomers is given below-

1. hex-1-ene
2. hex-2-ene
3. hex-3-ene
4. 2-methylpent-1-ene
5. 3-methylpent-1-ene
6. 4-methylpent-1-ene
7. 2-methylpent-2-ene
8. 3-methylpent-2-ene
9. 4-methylpent-2-ene
10. 2,3-dimethylbut-1-ene
11. 3,3-dimethylbut-1-ene
12. 2-ethylbut-1-ene
13. 2,3-dimethylbut-2-ene

#SPJ3