1,1-bis(di-tert-butylmethylsilyl)-2,3-bis(trimethylsilyl)-1-silacycloprop-2-ene

• 分子结构分类: 有机化合物 - 有机金属化合物 - 有机类金属化合物
• 英文名称: 1,1-bis(di-tert-butylmethylsilyl)-2,3-bis(trimethylsilyl)-1-silacycloprop-2-ene
• 英文别名: 1,1-bis(di-tert-butylmethylsilyl)-2,3-bis(trimethylsilyl)silacycloprop-2-ene；Ditert-butyl-[1-[ditert-butyl(methyl)silyl]-2,3-bis(trimethylsilyl)siliren-1-yl]-methylsilane
• 化学式: C₂₆H₆₀Si₅
• 分子量: 513.19
• InChiKey: SABULFKMCMLGBV-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  10.09
• 重原子数：
  31
• 可旋转键数：
  8
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.92
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为反应物：
  描述：

  1,1-bis(di-tert-butylmethylsilyl)-2,3-bis(trimethylsilyl)-1-silacycloprop-2-ene 在 lithium 作用下， 以 四氢呋喃 、 乙二醇二甲醚 为溶剂， 反应 0.75h， 生成 1,1-bis(di-tert-butylmethylsilyl)-2-(trimethylsilylethynyl)-2-(2,2,6,6-tetramethylpiperidino)-1-sila-2-boren-2-ide
  参考文献：
  名称：

  A Stable Silaborene:  Synthesis and Characterization

  摘要：

  A stable silicon-boron doubly bonded compound, silaborene (2), was synthesized by the reaction of 1,1-dilithiosilane (1) with dichloro(2,2,6,6-tetramethylpiperidino)borane in toluene. The X-ray crystallographic analysis of 2 revealed that the >Si=B-N< framework is almost linear (176.87(13) degrees ) with an Si-B bond length of 1.8379(17) A, which is about 10% shorter than typical Si-B single bonds. The silaborene 2 reacted with lithium trimethylsilylacetylide at 60 degrees C in DME to give the corresponding silaborenide (4-.[Li(dme)3]+), whose reddish-orange crystals were isolated as the solvent separated ion pair. The X-ray analysis of 4-.[Li(dme)3]+ showed that the Si-B bond length (1.933(3) A) is longer than that of 2, but still shorter than typical Si-B single bonds. These structural features indicate that 4- has double bond character involving the >Si=B<- resonance structure.

  DOI：

  10.1021/ja0570741

文献信息

• Cyclotrisilenylium Ion:  The Persilaaromatic Compound
  作者：Masaaki Ichinohe、Masayasu Igarashi、Kaori Sanuki、Akira Sekiguchi

  DOI：10.1021/ja053202+

  日期：2005.7.1

  X-ray crystallographic analysis, showing that the three-membered ring constitutes an almost equilateral triangle with average Si-Si bond lengths of 2.216(3) A. The X-ray crystal structure and spectral data show that 4+ is not only a free silyl cation but also a 2pi electron aromatic species with delocalization of the positive charge over the three-membered skeleton.

  高度拥挤的 3,3-双(二叔丁基甲基甲硅烷基)-1,2-双(三叔丁基甲硅烷基)环三甲硅烷 (3) 被新设计为环三甲硅烷基鎓离子的前驱体，并通过 2 当量的反应制备二锂硫硅烷 (tBu2MeSi)2SiLi2 (1) 与 2,2,3,3-四溴-1,1,1,4,4,4-六叔丁基四硅烷。3 与四芳基硼酸三苯基甲基鎓在甲苯中反应生成（二叔丁基甲基甲硅烷基）双（三叔丁基甲硅烷基）环三甲硅烷基鎓离子（4+），其以四芳基硼酸盐的形式分离，对空气和湿气极为敏感黄色晶体，代表环丙烯离子的第一个可分离的硅同系物。4+.TSFPB-(TSFPB-=四[4-(叔丁基二甲基甲硅烷基)-2,3,5,6-四氟苯基]硼酸酯)的分子结构通过X射线晶体学分析确定，
• Heavy cyclopropene analogues R4SiGe2 and R4Ge3 (R = SiMe Bu2) – New members of the cyclic digermenes family
  作者：Vladimir Ya. Lee、Hiroyuki Yasuda、Masaaki Ichinohe、Akira Sekiguchi

  DOI：10.1016/j.jorganchem.2006.03.049

  日期：2007.1

  1H-Siladigermirene R4SiGe2 (2a) and 1H-trigermirene R4Ge3 (2b) (R = SiMe'Bu,) with a Ge=Ge double bond were synthesized by the reaction of tetrachlorodigermane RGeCl2-GeCl2R with dilithiosilane R2SiLi2 and dilithiogermane R2GeLi2, respectively. The skeletal Ge=Ge double bond of 2a is trans-bent (51.0(2)degrees) with a bond distance of 2.2429(6) angstrom. The reaction of both 2a and 2b with CH2Cl2 resulted in the formation of unusual four-membered ring compounds 5a and 5b as a result of a ring expansion reaction. 1H-Trisilirene 7a and 3H-disilagermirene 7b with an Si=Si double bond also smoothly reacted with CH2Cl2 to yield the four-membered ring systems 8a and 8b, respectively. (c) 2006 Elsevier B.V. All rights reserved.