m position of the orbital part (Table 12). Again, the most significant
contributions are coming from symmetries associated to the
d orbitals. The a2 interaction channel does not belong to such a situation,
having a smaller contribution. Another regularity is the fact
that the symmetries related with occupied orbitals of the LF scheme
in D2d show stabilizing negative contributions, while the empty d
orbitals contribute with positive terms. Thus, these systems behave