Subject: reduced mass

From: "Eun Joo Lee" <[email-masked]>
Date: Wed, 28 Oct 1998 13:22:47 -0800

Hi,
I would like to know how the gaussian program calculate the
reduced mass when you submit the job for frequency calculation of molecule.
I wonder how 3n-6 # of reduced mass is calculated instead of 3n # of reduced
mass.(n is number of atoms)
It could be very simple question, but still it puzzles me.
If anyone can give me a clear explanation (phsycally and mathematically),
I give you many thanks.