Carbon dioxide activation with sterically pressured mid- and high-valent uranium complexes

Sterically pressured mid- to high-valent uranium complexes with an aryloxide substituted triazacyclononane ligand scaffold are analyzed for carbon dioxide activation and transformation chemistry. The molecular structures of the synthesized uranium carbamate complexes have highlighted the different reactivities due to the steric pressure introduced by the alkyl derivatized tris(aryloxide) triazacyclononane ligand.