Reactions of methyl fluorosulphonate and triethyloxonium tetrafluoroborate with metal complexes

Methyl fluorosulphonate and triethyloxonium tetrafluoroborate (which is less reactive) have been found to give four distinct types of reaction with transition metal complexes, viz. (a) halogen abstraction, (b) oxidative-addition, (c) alkylation of the coordinated ligands, and (d) oxidation at the metal atom.