7. Sigma Interaction Strength

8. Pi Donor Ligands: Mainly oxides and halides

9. Mn2+(aq) MnO4 -

10. Pi Acceptor Ligands: CO, CN-, pyridine

11. Pi Acceptor Ligands and spectroscopy: CO, CN-, pyridine

12. Reactivity of Transition Metal Complexes
Substitution Reactions
Redox Reactions
Photochemically-Induced Reactions

13. Substitution Reactions: why would they occur?

14. Chelate Effect
Cd(CH3NH2)42+ vs. Cd(en)22+
Thermodynamics of Formation
Ligands Ho (kJ/mol) So (J/K-mol) TSo (J/mol) Go (kJ/mol)
4 CH3NH
2 en
Another example:
[Ni(NH3)6] en  [Ni(en)3] NH K =

15. Catalysis Homogeneous vs. Heterogeneous
Transition metal complex catalysis