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Polysilanes réactifs, 5 . Optimisation de la synthèse des α,ω‐bis(triméthylsilyl)oligo (méthylphénylsilane)s par prise en considération d'un mécanisme anionique
Author(s) -
Reyx Danièle,
Martins José Manuel Natário,
Campistron Irène,
Noireaux Patrick
Publication year - 1995
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.1995.021960319
Subject(s) - oligomer , chemistry , trimethylsilyl , alkali metal , polymer chemistry , molar mass distribution , solvent , sodium , polymer , yield (engineering) , size exclusion chromatography , potassium , gel permeation chromatography , condensation polymer , organic chemistry , materials science , metallurgy , enzyme
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).