How Do IR Spectra Differ Between 4-Methylcyclohexene and 4-Methylcyclohexanol?

[Socr]

1. Compare and interpret the infared spectra of 4-methylcyclohexene and 4-methylcyclohexanol.

2. Identify the C-H out-of-plane bending vibrations in the infared spectrum of 4-methylcyclohexene. What structural information can be obtained from these bands?

 

[JJMB]

4-methylcyclohexanol contains a hydroxy group. If you are doing anything with IR, the big broak hydroxy group peak around 3200-3500 1/cm is something you should know by heart.

4-methylcyclohexene, being an alkene, would contain a C=C peak which wouldn't be found in the alcohol.

Just consult the IR section of your organic chem textbook for where the out-of-plane bending vibrations are, I don't remember anymore.