Please use this identifier to cite or link to this item: doi:10.22028/D291-23924
Title: Reactions of trimethylsilylated silicate anions in acidic media. - Part 2 : The influence of reaction parameters
Author(s): Garzó, Gabriella
Hoebbel, Dagobert
Vargha, Anna
Ujszászi, Kálmán
Language: English
Year of Publication: 1984
OPUS Source: Journal of the Chemical Society / Dalton transactions. - 1984, S. 1857-1861
SWD key words: Silicate
DDC notations: 540 Chemistry
Publikation type: Journal Article
Abstract: It is shown that the ion-exchange resin Amberlyst 15 acts as a powerful proton donor for SiO bond cleavages and rearrangements of trimethylsiloxysiloxanes. In the presence of hexamethyldisiloxane, transformations of trimethylsiloxysiloxanes of different structure show a dual effect: highly caged structures are loosened, while very loose structures become more rigid. Tetrameric ring structures predominate in the reaction products. The transformation reactions are controlled by the acid to hexamethyldisiloxane ratio in the reaction mixture. In the absence of hexamethyldisiloxane trimethylsiloxysiloxanes are highly degraded.
Link to this record: urn:nbn:de:bsz:291-scidok-19278
Date of registration: 19-Dec-2008
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
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