The role of Brønsted acid catalysis in inter-metal ligand exchange reactions

A Bronsted acid is shown to catalyse the inter-metal exchange of mono-anionic (alkoxide and amide) and dianionic (imido) ligands in four-coordinate molybdenum complexes of the type Mo(NR)2(X)2 (R = alkyl, aryl; X = alkoxide, amide).