B. E. Douglas, D. H. McDaniel, J. J. Alexander, Concepts and Models of Inorganic Chemistry, 3rd edition, John Wiley & Sons, New York, 1994, page 147.
 
 

Problem 3.15

Give the symmetry labels for the p and d orbitals for [Co(NH3)6]3+, [Co(en)3]3+, [Co(edta)]-, and trans-[Cr(Cl)2(NH3)4]+.
 
 
 

Answer:

Ignore H atoms:

[Co(NH3)6]3+

Oh point group, so from the character table the p orbitals transform as t1u and the d orbitals transform as eg + t2g.
 
 

[Co(en)3]3+, see page 467 for the structure

D3 point group, so from the character table the p orbitals transform as a2 + e and the d orbitals transform as a1 + 2e.
 
 

[Co(edta)]-, see page 467 for the structure

C2 point group, so from the character table the p orbitals transform as a + 2b and the d orbitals transform as 3a + 2b.
 
 

trans-[Cr(Cl)2(NH3)4]+

D4h point group, so from the character table the p orbitals transform as a2u + eu and the d orbitals transform as a1g + b1g + b2g + eg.