tetrakis[2-(dimethylsilyl)ethyl]silane | 213491-19-1

• 分子结构分类: 有机化合物 - 有机盐 - 有机金属盐
• 英文名称: tetrakis[2-(dimethylsilyl)ethyl]silane
• 英文别名: tetra(Si-H)silane；tetrakis(dimethylsilylethyl)silane；Tetrakis(2-dimethylsilylethyl)silane
• CAS: 213491-19-1
• 化学式: C₁₆H₄₄Si₅
• 分子量: 376.953
• InChiKey: USOVPUGAUDZWPJ-UHFFFAOYSA-N

物化性质

• 沸点：
  354.6±27.0 °C(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5.38
• 重原子数：
  21
• 可旋转键数：
  12
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 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：

  tetrakis[2-(dimethylsilyl)ethyl]silane 在 palladium on activated charcoal 水 作用下， 以 1,4-二氧六环 为溶剂， 反应 12.0h， 以91%的产率得到tetrakis[2-(hydroxydimethylsilyl)ethyl]silane
  参考文献：
  名称：

  Coupar, Pamela I.; Jaffres, Paul-Alain; Morris, Russell E., Journal of the Chemical Society, Dalton Transactions, 1999, # 13, p. 2183 - 2187

  摘要：

  DOI：
• 作为产物：
  描述：

  tetrakis[2-[chloro(dimethyl)silyl]ethyl]silane 在 lithium aluminium tetrahydride 作用下， 以 四氢呋喃 、 乙醚 为溶剂， 以56%的产率得到tetrakis[2-(dimethylsilyl)ethyl]silane
  参考文献：
  名称：

  The synthesis and catalytic activity of poly(bis(imino)pyridyl) iron(II) metallodendrimer

  摘要：

  The first and second generation carbosilane dendrimers with silicon hydride terminated were synthesized, and then reacted with bis(imino)pyridyl containing allyl [4-CH2==CHCH2-2,6-(Pr2C6H3N)-Pr-i==CMe(C5H3N)MeC==N(2,6-'Pr2C6H3)], in the presence of H2PtCl6 as a hydrosilylation catalyst, to afford the first and second generation carbosilane supported ligands. Complexation reactions with FeCl(2)(.)4H(2)O give rise to iron-containing carbosilane dendrimers with FeCl2 moieties bound on the periphery. The metallodendrimers were used as catalyst precursors, activated with modified methylaluminoxane, for the polymerization of ethylene. In the case of low Al/Fe molar ratio, the metallodendrimers display much higher catalytic activity towards ethylene polymerization and produce much higher molecule weight polyethylenes than the corresponding single-nuclear complex under the same conditions. (C) 2004 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.jorganchem.2004.06.053

文献信息

• Preparation and Characterization of Nonpolar Fluorinated Carbosilane Dendrimers by APcI Mass Spectrometry and Small-Angle X-ray Scattering
  作者：Bamidele A. Omotowa、Keith D. Keefer、Robert L. Kirchmeier、Jean'ne M. Shreeve

  DOI：10.1021/ja992794r

  日期：1999.12.1

  The following highly fluorinated nonpolar dendrimers were obtained in high yields from multiple hydrosilylation reactions between core hydride terminated carbosilane dendrimers and ally1-1,1-dihydrofluoroethyl ether or ally1-1,1-dihydroheptadecafluorononyl ether through divergent synthetic routes: Si[CH2CH2SiMe2(CH2CH2CH2OCH2CF3)](4) (7),SiCH2CH2SiMe[CH2CH2SiMe(CH2CH2CH2OCH2CF3)(2)](2)}(4) (8), Si[CH2CH2Si(CH2CH2CH2OCH2C8F17)(3)]4 (9), Si[CH2CH2SiMe2(CH2CH2CH2OCH2C8F17)](4) (10), and SiCH2CH2Si[CH2CH2Si(CH2CH2CH2OCH2C8F17)(3)](3)}(4) (11) These compounds were characterized by elemental and spectroscopic analyses. Valuable mass spectral data were obtained by using atmospheric pressure chemical ionization (APcI). The fluorinated dendrimer molecule and the nonfluorinated core scatter X-ray light differently and present unique slopes on the Guinier Plot of data from small-angle X-ray light scattering (SAXS) in hexafluorobenzene. Glass transition temperatures (T-g) and thermogravimetric analyses (TGA) of the dendrimers were determined.
• Diethyl sulfide stabilization of platinum-complex catalysts for hydrosilylation of olefins
  作者：Christopher M. Downing、Harold H. Kung

  DOI：10.1016/j.catcom.2011.03.041

  日期：2011.7

  Addition of excess diethylsulfide to the Karstedt catalyst prevents agglomeration of Pt and results in higher reaction rates for hydrosilylation of olefins. The beneficial effects were very pronounced in the hydrosilylation of trimethylsilyl-4-pentenoate with tetrakis(dimethylsilylethyl)silane, where 57% yield was obtained compared with 10% without diethylsulfide. Enhanced activity was also observed in the hydrosilylation of tetravinylsilane, vinyltrimethylsilane, and 1-hexene with chlorodimethylsilane. (C) 2011 Elsevier B.V. All rights reserved.
• Preparation of Carbosilane Dendrimers and Their Characterization Using ¹H/¹³C/²⁹Si Triple Resonance 3D NMR Methods
  作者：Minghui Chai、Zhengjie Pi、Claire Tessier、Peter L. Rinaldi

  DOI：10.1021/ja9831812

  日期：1999.1.1

  In this paper we show the utility of H-1/C-13/Si-29 triple resonance, 3D, and pulse field gradient (PFG) NMR techniques for characterizing organosilicon based polymers. The dendrimers studied are first generation Si(CH2CH2SiHMe2)(4) and second generation Si[CH2CH2SiMe(CH2CH2SiHMe2)(2)](4) polycarbosilanes. The signals from one-bond and two-bond connectivities among H-1 atoms coupled to both C-13 and Si-29 at natural abundance have been selectively detected. The spectral dispersion and the atomic connectivity information present in the 3D NMR spectra provide resonance assignments and a definitive structure proof.