Symmetry of cyclohexane

  1. 1. The problem statement, all variables and given/known data
    Determine the point group of the chair conformer of cyclohexane. How many Raman active vibrations and how many infra-red active vibrations might you expect to detect in its spectrum?


    2. Relevant equations

    (see link below)

    3. The attempt at a solution

    http://img442.imageshack.us/img442/240/symmetrycw.jpg

    Im rubbish with LaTex so ive hosted a picture of what ive done in word. Ive determined the point group to be D3h but when I use the equation to get the values for the different vibrations, I get a total of 24 when it should be 18 because I started with 18 vectors (3 on each carbon). Im not sure where im going wrong. Thanks.
     
  2. jcsd
  3. Any ideas?
     
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