Abstract

Gold(III) π-complexes have been authenticated recently with alkenes, alkynes, and arenes. The key importance of PdII π-allyl complexes in organometallic chemistry (Tsuji-Trost reaction) prompted us to explore gold(III) π-allyl complexes, which have remained elusive so far. The (P,C)AuIII (allyl) and (methallyl) complexes 3 and 3' were readily prepared and isolated as thermally and air-stable solids. Spectroscopic and crystallographic analyses combined with detailed DFT calculations support tight quasi-symmetric η3 -coordination of the allyl moiety. The π-allyl gold(III) complexes are activated towards nucleophilic additions, as substantiated with β-diketo enolates.

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