Isolation and redox reactivity of cerium complexes in four redox states.

ABSTRACT: The chemistry of lanthanides is limited to one electron transfer reactions due to the difficulty of accessing multiple oxidation states. Here we report that a redox-active ligand combining three siloxides with an arene ring in a tripodal ligand can stabilize cerium complexes in four different redox states and can promote multielectron redox reactivity in cerium complexes. Ce(iii) and Ce(iv) complexes [(LO₃)Ce(THF)] (1) and [(LO₃)CeCl] (2) (LO₃ = 1,3,5-(2-OSi(O^tBu)₂C₆H₄)₃C₆H₃) were synthesized and fully characterized. Remarkably the one-electron reduction and the unprecedented two-electron reduction of the tripodal Ce(iii) complex are easily achieved to yield reduced complexe

SUBMITTER: Hsueh FC 

PROVIDER: S-EPMC10246686 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature