Assembling diuranium complexes in different states of charge with a bridging redox-active ligand.

ABSTRACT: Radical-bridged diuranium complexes are desirable for their potential high exchange coupling and single molecule magnet (SMM) behavior, but remain rare. Here we report for the first time radical-bridged diuranium(iv) and diuranium(iii) complexes. Reaction of [U{N(SiMe₃)₂}₃] with 2,2'-bipyrimidine (bpym) resulted in the formation of the bpym-bridged diuranium(iv) complex [{((Me₃Si)₂N)₃U^IV}₂(μ-bpym^2-)], 1. Reduction with 1 equiv. KC₈ reduces the complex, affording [K(2.2.2-cryptand)][{((Me₃Si)₂N)₃U}₂(μ-bpym)], 2, which is best described as a radical-bridged U^III-bpym˙^--U^III complex. Further reduction of 1 wi

SUBMITTER: Modder DK 

PROVIDER: S-EPMC9533398 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature