of scarce water provides a higher yielding route to substituted octasilsesquioxane cages. Further cages have now been prepared in good yield using this route and their X-ray crystal structures demonstrate that their cage geometries in the solid state are very similar with the packing constraints of the crystal lattices appearing to have the greatest influence on the geometry of the cage core. The mechanism
最近报道的三乙氧基
硅烷与
四丁基氟化铵在稀
水存在下的反应为取代的八聚倍半
硅氧烷笼子提供了更高的收率。现在已经使用这种方法以高收率制备了更多的笼子,它们的X射线晶体结构表明,它们的笼子在固态下的几何形状非常相似,而晶格的堆积约束似乎对晶格的几何形状影响最大。笼芯。尽管尚未明确证明其排他性,但已研究了反应机理并验证了所提出的笼形成机理。通过仔细选择反应条件,已证明速率和产率的急剧增加。