Combining ligand-enhanced backdonation and steric shielding to stabilize a mono-substituted Au( i ) carbene

David Vesseur , Karinne Miqueu (1) , Didier Bourissou (2)

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

A mono-substituted Au(i) carbene was prepared by reacting HC(N2)(Dmp) (Dmp = 2,6-dimesitylphenyl) with an (o-carboranyl)-diphosphine AuNTf2 complex. It is stable up to −10 °C and was characterized by NMR spectrocopy. According to DFT calculations, the chelating P^P ligand enhances Au → Ccarb backdonation, while the Dmp substituent provides kinetic stabilization but does not bias the electronic structure of the carbene complex

Domaines: Chimie; Chimie théorique et/ou physique

David Vesseur, Karinne Miqueu, Didier Bourissou. Combining ligand-enhanced backdonation and steric shielding to stabilize a mono-substituted Au( i ) carbene. Chemical Communications, 2023, 59 (36), pp.5387-5390. ⟨10.1039/d3cc01007d⟩. ⟨hal-04096638⟩