LAUSR

Abstract As we all know, the Cu complexes have been extensively studied as synthetic models because of their different valences. Here, the organic ligand of 1-methyl-1H-benzo[d]imidazol-2-yl)methanol (HL) was used to react with Cu(ClO4)2·6H2O in CH3CN, we successfully obtained a mix valent copper complex [CuII(L1)2][CuI(HL)2]·ClO4 (1) under 60 °C. The structure analysis suggested that the Cu1 ion was coordinated with two nitrogen atoms from two HL ligands, which two ligands without removing H ions. The Cu2 ion was coordinated with two oxygen ions and two nitrogen atoms from two L1 ligands, which two ligands with removing H ions. The X-ray photoelectron spectroscopy (XPS) test showed that the valence state of Cu1 ion was +1, and the Cu2 ion was +2. The magnetic susceptibility was exhibited ferrimagnetism with g = 2.04. The electrocatalytic results suggested that CuIICuI species reacted with O2 to give a superoxide radical intermediate for complex 1.