Constitutional isomers

[Novelpreet_Boparai1N]

If we are talking about the constitutional isomers of a molecule does the most basic structure count. For example when we say the constitutional isomers of cyclohexane, is cyclohexane included?

[Omeed_Partovi_1L]

Yes, it does! Thus, if they asked you to name three constitutional isomers of C6H12, drawing cyclohexane tislef, 1-methylcyclopentane, and 1,2-dimethylcyclobutane would be a valid answer. However, I was also wondering if we would ever be expected to draw all the constitutional isomers for an organic molecule and if so how complex would the molecule be?

[Chem_Mod]

Yes, you would include that in your total count of constitutional isomers. If the question gave you a specific structure, and asked for the constitutional isomers other than the one provided, then no you would not include it.