Contributions Per Atom in MO diagram

[mrshappy0]

Homework Statement

How do you find the contributions per atom for calculating the reducible parts?

For example CO3-2 has pt. grp: D3h.

From the character tables-- the first row (unshifted atoms) is: 3,0,1,3,0,1. Second row (coefficients): 1,2,3,1,2,3 Third Row (contributions per atom): ?,?,?,?,?,?

Homework Equations

The Attempt at a Solution

I know the answer is 3,0,-1,1,-2,1 but I can't find any hints as to how this was obtained. Is it from the character tables or from the symmetry operations?

 

[mrshappy0]

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