Characterization of a Macrocyclic end-on Peroxido Copper Complex

 

Thirty years on: The dinuclear copper peroxido complex [(tet b)CuO₂Cu(tet b)]²⁺ has been structurally characterized (see picture: Cu yellow, O red, N pink; tet b=rac-5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane). This complex is quite persistent in solution at room temperature and is the first example of a structurally characterized copper dioxygen adduct complex with a macrocyclic ligand based on earlier studies by Valentine et al.