Spirocycle (SitBu3)6Si9Cl2: The First of Its Kind among Group 14 Elements
Spirocycle (SitBu3)6Si9Cl2: The First of Its Kind among Group 14 Elements
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螺环 (SitBu3)6Si9Cl2：第 14 族元素中的第一个
DOI：
10.1002/ejic.201000498
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发表时间：
2010
影响因子：
2.3
通讯作者：
P. Mayer
中科院分区：
文献类型：
--
作者：
T. Klapötke;S. Vasisht;P. Mayer
对通过四硅四面体KR* 3 Si 4 与SiCl 4 反应制备的(R* 3 Si 4 ) 2 SiCl 2 的结构研究表明，四面体部分R* 3 Si 4 经历了结构转变。该分子具有螺[4.4]壬硅烷网络，包含两个同核三环[2.1.0.0 2,5]五硅烷环以及共同的“裸”硅桥。该化合物与 R* 6 Si 8 具有相似的结构，R* 6 Si 8 由沿着 Si-Si 桥稠合在一起的相似环组成。据报道，三环[2,1.0,0 2,5]-戊烷或具有异核基团同系物的类似环系统的价角、面间角和桥头距离的比较突出了结构中庞大的超级甲硅烷基R*基团的影响。
Structural studies on (R* 3 Si 4 ) 2 SiCl 2 , prepared by the reaction of tetrasilatetrahedranide KR* 3 Si 4 with SiCl 4 , show that the tetrahedral moieties R* 3 Si 4 undergo structural transformation. The molecule exhibits a spiro[4.4]nonasilane network that comprises two homonuclear tricyclo[2.1.0.0 2,5 ]pentasilane rings with a common "naked" silicon bridge. The compound shows structural similarities with R* 6 Si 8 , which consists of similar rings fused together along an Si-Si bridge. Comparison of valence angles, interplanar angles and bridgehead distances with respect to tricyclo[2,1.0,0 2,5 ]-pentanes or similar ring systems with heteronuclear group homologues are reported to highlight the influence of bulky supersilyl R* groups in the structure.