Gold(III)-arene complexes by insertion of olefins into gold-aryl bonds

Feriel Rekhroukh (1) , Charlie Blons (1) , Laura Estévez (2) , Sonia Mallet-Ladeira (3) , Karinne Miqueu (2) , Abderrahmane Amgoune (1) , D. Bourissou (1)

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

The synthesis and characterization of the first gold(iii)-arene complexes are described. Well-defined (P,C)-cyclometalated gold(iii)-aryl complexes were prepared and characterized by NMR spectroscopy. These complexes swiftly and cleanly reacted with norbornene and ethylene to provide cationic gold(iii)-alkyl complexes, in which the remote phenyl ring was η2-coordinated to gold. The interaction between the aromatic ring and the gold(iii) center was thoroughly analyzed by NMR spectroscopy, X-ray diffraction, and DFT calculations. The π-arene coordination was found to significantly influence the stability and reactivity of low coordinated gold(iii) alkyl species. © 2017 The Royal Society of Chemistry.

Domains: Catalysis; Coordination chemistry; Organic chemistry; Polymers; Theoretical and/or physical chemistry

Feriel Rekhroukh, Charlie Blons, Laura Estévez, Sonia Mallet-Ladeira, Karinne Miqueu, et al.. Gold(III)-arene complexes by insertion of olefins into gold-aryl bonds. Chemical Science, 2017, 8 (6), pp.4539-4545. ⟨10.1039/c7sc00145b⟩. ⟨hal-01613222⟩