Formal Gold to Gold Transmetalation of an Alkynyl Group Mediated by Palladium: A Bisalkynyl Gold Complex as a Ligand to Palladium

Abstract

The reaction of [Au(C≡CnBu)]n with [Pd(η3-allyl)Cl(PPh3)] results in a ligand and alkynyl rearrangement, and leads to the heterometallic complex [Pd(η3-allyl){Au(C≡CnBu)2}]2 (3) with an unprecedented bridging bisalkynyl gold ligand coordinated to palladium. This is a formal gold to gold transmetalation that occurs through reversible alkynyl transmetalations between gold and palladium.