Chain isomers of hexane [closed]








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Why does hexane just have 5 chain isomers when I can think of more, like 2,2,3-trimethylbutane?
That's just one of the top of my head, I could think of more.




The list


* n-hexane
* 2-methylpentane
* 3-methylpentane
* 2,2-dimethylbutane
* 2,3-dimethylbutane


is definitely exhaustive.


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