Polysilanes réactifs, 5. Optimisation de la synthèse des α,ω-bis(triméthylsilyl)oligo (méthylphénylsilane)s par prise en considération d'un mécanisme anionique

✍ Scribed by Danièle Reyx; José Manuel Natário Martins; Irène Campistron; Patrick Noireaux

• Publisher: John Wiley and Sons
• Year: 1995
• Tongue: English
• Weight: 779 KB
• Volume: 196
• Category: Article
• ISSN: 1022-1352
• DOI: 10.1002/macp.1995.021960319

✦ Synopsis

Abstract

Low‐molecular‐weight organosilane polymers were prepared by sodium and potassium/sodium coupling of dichloromethylphenylsilane (1) with chlorotrimethylsilane (2). Size exclusion chromatography (SEC), IR, UV and NMR (^1^H, ^13^C and ^29^SI) analysis of the crude α,ω‐bis(trimethylsilyl) oligo(methylphenylsilane) (3) were performed and compared with those of the isolated shortest oligomers. According to an anionic mechanism, the solvent and alkali‐metal effects on the yield and the oligomer distribution (SEC‐resolved) allow an optimisation for the synthesis of the shortest oligomers (trisilane and tetrasilane).