Redox-active ligands can be used to facilitate multi-electron processes at single metal centers.  Using 2,6-((Mes)N=CMe)2C5H3N) (MesPDIMe) as a redox-active ligand, highly reduced uranium species bearing bulky cyclopentadienyl-based ancillary ligands, Cp*U(THF)(MesPDIMe) and CpPU(MesPDIMe), have been synthesized.  Reactivity of these with PhEEPh (E = S, Se, Te), RN=NR (R = Ph, p-tolyl), and pyridine-n-oxide have produced novel trans-dichalcogenides, trans-(bis)imidos, and uranyl species through ligand mediated multi-electron chemistry.

Reactivity of highly reduced uranium complexes bearing redox active pyridine(diimine) ligands

246th National Meeting (2013)

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