Bissilylierte Haloniumionen: [Me3SiXSiMe3][B(C6F5)4] (X=F, Cl, Br, I)
β Scribed by Mathias Lehmann; Axel Schulz; Alexander Villinger
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 360 KB
- Volume
- 121
- Category
- Article
- ISSN
- 0044-8249
No coin nor oath required. For personal study only.
β¦ Synopsis
Ionen des Typs [R Γ X Γ R] + mit X = Halogen werden als Haloniumionen bezeichnet. Sie treten sowohl cyclisch als auch offenkettig auf, bilden eine bedeutende Klasse von Oniumionen [1, 2] und spielen eine wichtige Rolle in der prΓ€parativen Chemie, z. B. als Zwischenstufen bei Friedel-Crafts-Alkylie
π SIMILAR VOLUMES
The Raman vibrational spectra of the hexamethyltrisilanes with X = H, F, Cl, Br, I, X 2 MeSiSiMe 2 SiMe 3 C 6 H 5 and recorded at various temperatures, prove the simultaneous presence of two rotamers, anti and gauche, OCH 3 , in the liquid state. Enthalpy di β erences between the rotamers were determ
## Abstract Ph~3~SnN(SiMe~3~)~2~ (1) was prepared in good yields by reaction of [{NaN(SiMe~3~)~2~}~2~Β·THF] (2) with Ph~3~SnF. Treatment of 1 with [H(OEt~2~)~2~][H~2~N{B(C~6~F~5~)~3~}~2~] (4) in dichloromethane afforded the stannylium cation [Ph~3~Sn(OEt~2~)][H~2~N{B(C~6~F~5~)~3~}~2~] (5), which was
Copolymerizations of propylene (P) with 1,5-hexadiene (1,5-HD) were carried out with isospecific rac-1,2-ethylenebis(1-indenyl)Zr(NMe 2 ) 2 [rac-(EBI)Zr(NMe 2 ) 2 , 1] and syndiospecific isopropylidene(cyclopentadienyl)(9-fluorenyl)ZrMe 2 [i-Pr(Cp)-(Flu)ZrMe 2 , 2] compounds combined with Al(i-Bu) 3