1 and 3. The
switch between the behavior of eg and t2g orbital interaction channels,
when passing from complexes with negative ligands to the
series with neutral ligands, can be attributed to the role of electrostatic
dynamics during the bond formation. In the LFSE rationales
we consider only the perturbing role of the ligands against the
electrons accommodated on the metal ion, but in the total molecular
calculation we account also for the perturbing role of the metal
ion orbital distribution against the ligand frame, this effect
being enhanced in the case of charged ligands, as compared to
the neutral ones.