Ligand field activation energy LFAE

Fig. 5. Variation with successive filling of d-orbitals of ionic radii, rM, ligand field activation energies, LFAE, calculated for D ( ) and A ( ) mechanisms, AG 98 2 and A V for water exchange on [M(H20)6]2+/3+.

The ligand field activation energy (LFAE) is defined as the difference in the LFSE for the TS minus that of the reactants. Assuming a square pyramidal dissociative intermediate, the LFAEs for the different d" electron configurations are listed in Table 17.5. 

TABLE 17.5 Ligand field activation energies (LFAE) for an octahedral reactant and a square pyramidal transition state. 

---