Synthesis of cage-like octa(trimethylsiloxy)silsesquioxane  

作　　者：Chunye Hu Yan Qin Changyou Yuan 

机构地区：[1]Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China

出　　处：《Chinese Science Bulletin》1999年第22期2044-2047,共4页

摘　　要：Cage-like octa(trimethylsiloxy)silsesquioxane [(Me3SiO)SiO1.5]8 has been synthesized via the trimethylsilylation of cubic tetramethylammonium silicate octamer [(Me4NO)-SiO1.5]8 with chlorotrimethylsilane. The silicate octamer can be selectively formed by the reaction of tetraethoxysilane Si(OEt)4 with aqueous tetramethylammonium hydroxide in equalCage-like octa(trimethylsiloxy)silsesquioxane [ (Me3SiO)SiO1.5]8 has been synthesized via the trimethylsilylation of cubic tetramethylammonium silicate octamer [(Me4NO)-SiO1.5]8 with chlorotrimethylsilane. The silicate octamer can be selectively formed by the reaction of tetraethoxysilane Si(OEt)4 with aqueous tetramethylammonium hydroxide in equal molar ratio. Elementary analysis, FT-IR,1H,13C,29Si NMR are used to characterize these silsesquioxanes.

关 键 词：CAGE-LIKE SILSESQUIOXANE SILICATE Detainer trimethylsilylation. 

分 类 号：O621[理学—有机化学]