A Trimetallic Gold Boride Complex with a Fluxional Gold–Boron Bond

Abstract

Gold–boron (con)fusion: Addition of an anionic metalloborylene to an [AuCl(N-heterocyclic carbene)] complex results in attack of the boron atom at the gold center and formation of a trimetallic Mn2AuB framework (see scheme, middle). X-ray structural analysis and DFT calculations show that the bonding situation of this complex cannot be described by the “boryl” (pure boron donor) or “borane” (pure boron acceptor) descriptions.