Synthesis and Reactions of Rhenium(V) Oxo−Hydride Complexes

Abstract

Tp*ReO(H)Cl, TpRe(O)H(Cl), and Tp*ReO(H)2 have been prepared by alkoxide-for-hydride metathesis using BH3·THF. The triflate derivative Tp*Re(O)H(OTf) inserts olefins and is oxidized by oxygen-atom transfer reagents to give HOTf and Tp*ReO3, likely by a pathway involving hydride migration to an oxo ligand (Tp* = hydrotris(3,5-dimethyl-1-pyrazolyl)borate; triflate = OTf = OSO2CF3).