vinyl, allyl), have been synthesized. The structures of the complexesCp2M[(c-C5H9)7Si7O11](OSiMe2CH2CHCH2) (M = Zr (3d), Hf (5d)) have been unambiguously established by single-crystal X-ray diffraction analyses. Silylation or germylation of the zirconocene-containing silsesquioxane monosilanol Cp2Zr[(c-C5H9)7Si7O11](OH) (3a) or its hafnocene derivative Cp2Hf[(c-C5H9)7Si7O11](OH) (5a), which can be prepared
一系列含有茂金属的倍半硅氧烷与alkenylsilyl和三甲基甲硅烷基,CP ' 2 M [(CC 5 ħ 9)7的Si 7 ø 11 ](OSiMe 2 R)(图2b - d,3B - d,4D,5D:CP' = CP(环戊二烯基),CP *(五甲基环戊二烯基); M = Ti,Zr,Hf,R =甲基,乙烯基,烯丙基)。配合物CP 2 M [(cC 5 H 9)7 Si 7 O 11 ](OSiMe 2的结构CH 2 CH CH 2)(M = Zr(3d),Hf(5d))已通过单晶X射线衍射分析明确建立。含锆茂的倍半硅氧烷单硅醇CP 2 Zr [(cC 5 H 9)7 Si 7 O 11 ](OH)(3a)或其ha衍生物CP 2 Hf [(cC 5 H 9)7 Si 7 O 11 ](OH)(5a),可以通过倍半硅氧烷倍半硅氧烷三硅醇(cC 5 H 9)7 Si 7 O 9(OH)3(1
Synthesis of Cooligomers of Titanium-Bridged Silsesquioxanes and Octakis(hydridosilsesquioxane)
New titanium-bridged silsesquioxanes having olefinic groups, Ti[(c-C5H9)7Si7O12(SiMe2R)]2 (R = vinyl, allyl), react with octakis(hydridosilsesquioxane) under hydrosilylation reaction conditions to give oligomeric materials. The local structure around the titanium atoms of the starting silsesquioxanes is unchanged even in the oligomeric materials.