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Chemistry Forums for Students => Inorganic Chemistry Forum => Topic started by: qcan375 on March 12, 2006, 04:44:55 PM

Title: Factor Group Analysis?
Post by: qcan375 on March 12, 2006, 04:44:55 PM
I have a question regarding factor group analysis (FGA).

How does one know when to include the rotational and translational and acoustic external modes for a molecule and when not to include them when trying to determine the IR and Raman vibrational modes for a crystalline structure.

I have seen the above analysis used for different molecules with different FGA.

Really appreciate it if anyone shed some light on this.

 :)