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Homework Help: IR and Raman Spectroscopy With Vibrational Modes

  1. Feb 26, 2013 #1
    1. The problem statement, all variables and given/known data The question states to identify which graph is associated with which molecule, which are CF4 and CF2Cl2. The graphs are measurements of infrared spectra, one has one peak while the other has two. It then asks to determine which symmetry labels are associated with each peak.

    2. Relevant equations
    I'm given to understand that each peak with be associated with a specific vibrational mode, correct? And that using the 3(N)-6 rule, we have a total of 6 modes for each molecule.

    3. The attempt at a solution The only thing that I can gather from this is that whichever molecule has only one vibrational mode which is IR active, it will be attributed to the graph with one peak whereas the molecule with two will go to the graph with two peaks. The way we've covered this segment has been very broken and indirect so it's really hard to understand what's going on.
    1. The problem statement, all variables and given/known data

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
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