The 2+ ions in the first transition series generally show a preference for octahedral ge...

The 2+ ions in the first transition series generally show a preference for octahedral geometry over tetrahedral geometry. Nevertheless, the number of tetrahedral complexes formed is in the order Co > Fe > Ni .

a. Calculate the ligand field stabilization energies for tetrahedral and octahedral symmetries for these ions. Use the differences in LFSE for octahedral versus tetrahedral geometries to assess the relative stabilities of the possible configurations. Use the estimate that to express LFSE values in terms of Consider both high- and low-spin cases as appropriate for the octahedral complexes. Do these numbers explain this order?

b. Does the angular overlap model offer any advantage in explaining this order? To make this assessment, determine the differences between the electronic configuration energies for octahedral and tetrahedral geometries using the angular overlap model. Consider both high- and low-spin situations as appropriate.