|
|||||
|
|
Reversible Isomerization Between Silacyclopropyl Cation and Cyclic (Alkyl)(Amino)Silylene |
|
| Authors: | Dr Raphaël Nougué Dr Shintaro Takahashi Dr Antoine Baceiredo Dr Nathalie Saffon-Merceron Prof Vicenç Branchadell Dr Tsuyoshi Kato |
| Institution: | 1. Université de Toulouse, UPS, CNRS, LHFA UMR 5069, 31062 Toulouse, France;2. Université de Toulouse, UPS, CNRS, ICT FR2599, 118 route de Narbonne, 31062 Toulouse, France;3. Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain |
| Abstract: | A phosphine-stabilized silacyclopropyl cation 2 has been synthesized and fully characterized. Of particular interest, 2 reversibly isomerizes into the corresponding seven-membered cyclic (alkyl)(amino)silylene 3 at room temperature via a formal migratory ethylene insertion into the Si−P bond. Although silylene 3 has not been spectroscopically detected, its transient formation has been evidenced by the isolation of the corresponding disilene dimer 5 as well as by trapping reactions. |
| Keywords: | Isomerization Silylenes Silylium Ions Small Rings Transition Metal Complexes |