| Institution: | 1. Laboratoire Hétérochimie Fondamentale et Appliquée (UMR 5069), Université de Toulouse,CNRS, 118 route de Narbonne, F-31062 Toulouse, France
These authors contributed equally to this work.;2. Laboratoire Hétérochimie Fondamentale et Appliquée (UMR 5069), Université de Toulouse,CNRS, 118 route de Narbonne, F-31062 Toulouse, France;3. Institut de Chimie de Toulouse (FR 2599) UPS, and CNRS, ICT UAR2599, 118 route de Narbonne, F-31062 Toulouse, France;4. Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain |
| Abstract: | Several base-stabilized silyliumylidene ions ( 2 and 3 ) with different ligands were synthesized. Their behaviour appeared strongly dependent on the nature of ligand. Indeed, in contrast to the poorly reactive silyliumylidene ions 3 c,d stabilized by strongly donating ligands (DMAP, NHC), the silylene- and sulfide-supported one ( 2-H and 3 a ) exhibits higher reactivity toward various small molecules. Furthermore, their capability to successively activate multiple small molecules was clearly demonstrated by processes involving successive reactions with silane/formamide, CO2 and H2. Moreover, HBPin adduct of 3 a ( 8-C ) catalyzes the hydroboration of pyridine. Of particular interest, silylene-supported silyliumylidene complex 2-H is one of the rare species able to activate two H2 molecules. |
