Question

Where is the olefinic absorption in cyclohexene?

Answer 1

Possibly around about `1600` `cm^(-1)`.

Explanation:

Really the only way to address this question is to get the spectrum of methylcyclohexene and compare it to the spectrum of methylcyclohexane, and look for the extra peak round about `1600` `cm^(-1)`. Most of the time it is quite difficult to assign infrared absorptions except in the case of carbonyls.