Tetrakis-trimethylsilylaethinyl-german | 13963-42-3

• 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: Tetrakis-trimethylsilylaethinyl-german
• 英文别名: Tetrakis(trimethylsilylethynyl)-germane；trimethyl-[2-[tris(2-trimethylsilylethynyl)germyl]ethynyl]silane
• CAS: 13963-42-3
• 化学式: C₂₀H₃₆GeSi₄
• 分子量: 461.438
• InChiKey: FLPOTDXZVLJMRO-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.12
• 重原子数：
  25
• 可旋转键数：
  8
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.6
• 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：

  三乙基硼 、 Tetrakis-trimethylsilylaethinyl-german 反应 4.0h， 以95%的产率得到2,7-bis(diethylboryl)-3,8-diethyl-1,4,6,9-tetrakis(trimethylsilyl)-5-germaspiro[4.4]nona-1,3,6,8-tetraene
  参考文献：
  名称：

  1,1-Carboboration of alkynylgermanes – New germoles

  摘要：

  The C C bonds of various alkynylgermanes [Cl(H)Ge(C=C-R-1)(2), Cl2Ge(C=C-R-1)(2) with R-1 = Bu-n, SiMe3, and Ge(C C-R-1)(4) with R-1 - SiMe3] undergo 1,1-carboboration when treated with an excess of triethylborane at 80-110 degrees C. All pure final products with R-1 = SiMe3 possess germole-derived structures. Intermediates and side products as a result of lost stereoselectivity of the 1,1-carboborations could be detected and in some cases identified by NMR spectroscopic studies of the reaction solutions. (C) 2018 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.jorganchem.2018.02.027
• 作为产物：
  描述：

  lithium trimethylsilylacetylenide 、 四氯化锗 以 四氢呋喃 为溶剂， 以94%的产率得到Tetrakis-trimethylsilylaethinyl-german
  参考文献：
  名称：

  Tetrakis[(trimethylsilyl)ethynyl] Group 14 metal derivatives: an examination of the electronic interaction between two Group 14 metals connected by an acetylene wire

  摘要：

  制备并进行了光谱学检测，得到了硅、锗、锡和铅的四(三甲基硅基)乙炔衍生物。核磁共振、穆斯堡尔光谱和X射线晶体结构数据清楚地表明，在基态下，远离中心金属原子的SiMe₃基团与中心金属原子之间存在电子相互作用，导致中心金属原子强烈屏蔽；中心金属的相应核磁共振信号是四个碳配体的四面体14族金属中报道的最强屏蔽示例之一。讨论了这些电子相互作用的性质。

  DOI：

  10.1139/v93-209

文献信息

• Synthesis of tri-and tetraalkynylgermanes
  作者：A. A. Andreev、V. V. Konshin、N. A. Vinokurov、N. V. Komarov

  DOI：10.1007/s11172-006-0434-5

  日期：2006.8

  A straightforward synthesis of tetra-and trialkynylgermanes by reactions of compounds containing Ge-N or Ge-Cl bonds with alk-1-ynes was proposed. Reactions of appropriate amino-or halogermanes with alk-1-ynes were effective only in the presence of an equivalent amount of zinc dihalide.

  通过含有 Ge-N 或 Ge-Cl 键的化合物与烷基-1-炔的反应，提出了一种直接合成四炔基锗和三炔基锗的方法。只有在等量的二卤化锌存在下，适当的氨基或卤代锗与烷-1-炔的反应才有效。
• Reactivity of dianionic hexacoordinate germanium complexes toward organometallic reagents. A new route to organogermanes
  作者：G. Cerveau、C. Chuit、R. J. P. Corriu、C. Reye

  DOI：10.1021/om00051a049

  日期：1991.5

  Lithium and potassium tris(benzene-1,2-diolato)germanates (2a and 2b, respectively) and potassium tris(butane-2,3-diolato)germanate (3) are easily prepared from GeO2 in quantitative yields. They are very reactive toward organometallic reagents, the reactivity depending on the ligands on the germanium. Complexes 2 react with an excess of Grignard reagent to give the corresponding tetraorganogermanes R4Ge while the less reactive complex 3 leads to the functional triorganogermanes R3GeX. Tetraorganogermanes can also be prepared from complex 2b by reaction with organic bromides in the presence of Mg (Barbier reaction). The influence of Cp2TiCl2 and MgBr2 on the reactivity of Grignard reagents with these complexes was also investigated: in both cases formation of triorganogermanes was favored.
• Reactions of nucleophilic reagents with dianionic hexacoordinated germanium complexes: a new convenient route to functional organogermanes from germanium dioxide
  作者：G. Cerveau、C. Chuit、R. J. P. Corriu、C. Reye

  DOI：10.1021/om00093a038

  日期：1988.3
• Steric control in the formation of Co2(CO)6-alkyne complexes from Group 14 tetraalkynes and their reactions with acid
  作者：Michael A. Brook、Bjørn Ramacher、Carol Dallaire、Hari K. Gupta、Dagmar Ulbrich、Ralph Ruffolo

  DOI：10.1016/s0020-1693(96)05209-7

  日期：1996.9

  A series of tetrakis (trimethylsilylethyne) derivatives of Group 14 metals (2-4) was prepared. Co-2(CO)(6) complexes 5-10 were synthesised by the reaction of 24 with Co-2(CO)(8). From the silyl and germyl based compounds 2 and 3, either one or two alkynes could be complexed with Co-2(CO)(6). In contrast, the tin derived compound 4 could accommodate up to four Co-2(CO)(6) complexes. The longest wavelength UV-Vis absorbances of the silicon and germanium-based complexes were consistent with multiple, non-conjugated Co-2(CO)(6) chromophores. The tetrakis Co-2(CO)(6) complex 10, however, absorbs at a much longer wavelength suggesting conjugation of Co-2(CO)(6) complexes through the tin. The reactivity towards protonolysis of the uncomplexed alkynes 2-4 is a consequence of the hyperconjugative stabilisation of the intermediate beta-vinyl cation (the beta-effect): Sn(C=CSiMe(3))(3)>SnOTf(C=CSiMe(3))(2)>SiMe(3)>Ge(C=CSiMe(3))3>Si(C=CSiMe(3))(3). The reactivity of the Co-2(CO)(6) complexes, however, was quite different from the reactions of 2-4 and from analogous all-carbon systems. Treatment of 5-10 with strong acid led neither to protiodemetallation of the complexed or non-complexed alkynes but to decomplexation of the cobalt. Similarly, ligand metathesis reactions between 10 and Ph(2)SiCl(2) were not observed. The normal reactivity of silylalkynes towards electrophiles, which was expected to be enhanced by the presence of the cobalt complex, was diminished by the particular steric environment of the molecules under examination (5-10). As a result, the favoured reaction under these conditions was decomplexation of the cobalt.
• CERVEAU, G.;CHUIT, C.;CORRIU, R. J. P.;REYE, C., ORGANOMETALLICS, 10,(1991) N, C. 1510-1515
  作者：CERVEAU, G.、CHUIT, C.、CORRIU, R. J. P.、REYE, C.

  DOI：——

  日期：——