Synthesis, Characterization, and Reduction of Thorium Pyridinediimine Complexes.

A family of thorium complexes featuring the redox-noninnocent pyridinediimine ligand PDI was synthesized, including (PDI)ThCl (), (PDI)ThCl(THF) (), (PDI)ThCl(THF) () and [(PDI)Th(THF)] () Full characterization of these species shows that these complexes feature PDI in four different oxidation states. The electronic structures of these complexes have been explored using H NMR and electronic absorption spectroscopies, X-ray crystallography, and SQUID magnetometry where appropriate.