Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: IR spectra interpretation

  1. Feb 18, 2010 #1
    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?
  2. jcsd
  3. Feb 24, 2010 #2
    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.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook