Gold(III) π-Allyl Complexes

Jessica Rodriguez (1) , György Szalóki (2) , E. Daiann Sosa Carrizo (3) , Nathalie Saffon-Merceron (4) , Karinne Miqueu (3) , Didier Bourissou (1)

1 LHFA - Laboratoire Hétérochimie Fondamentale et Appliquée
2 MOLTECH-Anjou
3 IPREM - Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux
4 ICT - Institut de Chimie de Toulouse

Gold(III) pi-complexes have been authenticated recently with alkenes, alkynes and arenes. The key importance of Pd(II) pi-allyl complexes in organometallic chemistry (Tsuji-Trost reaction) prompted us to explore gold(III) pi-allyl complexes, which have remained so far elusive species. The (P,C)Au(III)(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 eta3-coordination of the allyl moiety. The pi-allyl gold(III) complexes are activated towards nucleophilic additions, as substantiated with β-diketo enolates.

Mots clés: allyl ligands gold(III) complexes nucleophilic Addition π-complexes structure elucidation

Domaines: Chimie

Jessica Rodriguez, György Szalóki, E. Daiann Sosa Carrizo, Nathalie Saffon-Merceron, Karinne Miqueu, et al.. Gold(III) π-Allyl Complexes. Angewandte Chemie International Edition, 2020, 59 (1511), ⟨10.1002/anie.201912314⟩. ⟨hal-02398796⟩