complex [LCuII (O2•–)]+(1)(L= TMG3tren (1, 1, 1-tris [2-[N 2-(1, 1, 3, 3-tetramethylguanidino)]
ethyl] amine)) has been investigated. Trifluoroacetic acid (HOAcF) reversibly associates with
the superoxo ligand in ([LCuII (O2•–)]+) in a 1: 1 adduct [LCuII (O2•–)(HOAcF)]+(2), as
characterized by UV–visible, resonance Raman (rR), nuclear magnetic resonance (NMR),
and X-ray absorption (XAS) spectroscopies, along with density functional theory (DFT) …