1. Griffith, J.S. “The Theory of Transition-Metal Ions”; Cambridge University Press, Cambridge, 1961.
2. As a general rule symmetry operations will be defined in an active sense, i.e. as leaving the Cartesian axes immobile while rotating or reflecting the orbital functions.
3. Ceulemans, A.; Bongaerts, N.; Vanquickenborne, L.G. Inorg. Chem. 1987, 26, 1566.
4. In table II of this reference the sign of the |a1 θε| determinant in the |2A2> component of 2T1g should be negative. 4 Dionne, G.F.; Palm, B.J. J. Magn. Resonance 1986, 68, 355.
5. Ballhausen, C.J. “Introduction to Ligand Field Theory”; McGraw-Hill, New York, 1962.