Ligand exchange reactions in Cu(Ⅲ) complexes: mechanistic insights by combined NMR and DFT studies

摘要

NMR studies of ~(13)C/~(12)C isotopic patterns in Cu(Ⅲ) intermediates and reaction products together with DFT calculations of possible reaction pathways indicate an intermolecular S_N2 like substitution mechanism for ligand exchange reactions in square planar Cu(Ⅲ) complexes, which is proposed to be slow compared to reductive elimination at synthetic conditions.