IPr3 Si3 Cl5 (+) : A Highly Reactive Cation with Silanide Character
Uhlemann, F; Schnepf, A
| HERO ID | 4248609 |
|---|---|
| In Press | No |
| Year | 2016 |
| Title | IPr3 Si3 Cl5 (+) : A Highly Reactive Cation with Silanide Character |
| Authors | Uhlemann, F; Schnepf, A |
| Journal | Chemistry: A European Journal |
| Volume | 22 |
| Issue | 31 |
| Page Numbers | 10748-10753 |
| Abstract | The reaction of a metastable SiCl2 solution with the sterically less-demanding carbene N,N-diisopropylimidazo-2-ylidene (IPr) yields the salt [(IPr3 Si3 Cl5 )(+) ]Cl(-) (1-Cl), containing a silyl cation with a Si3 backbone. Salt 1 is highly reactive, but it can be used as a reagent in deuterated dichloromethane, whereby dehalogenation with Me3 SiOTf (OTf=O3 SCF3 ) gives the dicationic silyl halide [(IPr3 Si3 Cl4 )](2+) 2. Quantum chemical calculations show that the HOMO is localized at the negatively charged central silicon atom of 1 and 2, and thus although both compounds are cations they are better described as silanides, which was also corroborated by NMR investigations. |
| Doi | 10.1002/chem.201601728 |
| Pmid | 27258331 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |