2,4,6,8-tetraethyl-2,4,6,8-tetrachloro-cyclotetrasiloxane | 18246-77-0

• 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: 2,4,6,8-tetraethyl-2,4,6,8-tetrachloro-cyclotetrasiloxane
• 英文别名: 2,4,6,8-Tetraaethyl-2,4,6,8-tetrachlor-cyclotetrasiloxan；2,4,6,8-tetrachloro-2,4,6,8-tetraethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane
• CAS: 18246-77-0
• 化学式: C₈H₂₀Cl₄O₄Si₄
• 分子量: 434.398
• InChiKey: DGCFTXZXTHLIRG-UHFFFAOYSA-N

物化性质

• 熔点：
  -62 °C
• 沸点：
  163-165 °C(Press: 2 Torr)
• 密度：
  1.22±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.86
• 重原子数：
  20.0
• 可旋转键数：
  4.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  36.92
• 氢给体数：
  0.0
• 氢受体数：
  4.0

反应信息

• 作为产物：
  描述：

  tetraethylcyclotetrasiloxane 在 氯 作用下， 生成 2,4,6,8-tetraethyl-2,4,6,8-tetrachloro-cyclotetrasiloxane
  参考文献：
  名称：

  Sokolow; Akimowa, Zhurnal Obshchei Khimii, 1956, vol. 26, p. 2276,2277;engl.Ausg.S.2545

  摘要：

  DOI：

文献信息

• Generation and capture of alkylchlorosilanones
  作者：S. V. Basenko、M. G. Voronkov、I. A. Gebel

  DOI：10.1007/bf02494689

  日期：2000.2

  Alkyltrichlorosilanes react with DMSO (molar ratio 1 : 1, 0 degrees C) to give cyclic oligoalkylchlorosiloxanes of the general formula [R(Cl)SiO](n) (where R = Me or Et; n = 3-6). With an excess of alkyltrichlorosilane (2 : 1), linear oligoalkylchlorosiloxanes Cl[R(Cl)SiO](m)SiCl2R (where R = Me or Et; m = 1-5) are also formed. In the presence of hexamethyldisiloxane (molar ratio Cl3SiR : DMSO : (Me3Si)(2) O = 1 : 1 : 2, 20 degrees C), the reaction products are both cyclic and linear oligoalkyl(trimethylsilyloxy)siloxanes [R(Me3SiO)SiO](n) (n = 3-5) and Me3Si[OSi(OSiMe3) R](m)OSiMe3 (m = 1-3), respectively. The reaction of DMSO with trichloro(vinyl)silane and hexamethyldisiloxane occurs in a similar manner. A plausible scheme of formation of the final products via intermediate alkylchlorosilanones RClSi=O and alkyl(trimethylsilyloxy)silanones is discussed.
• Reaction of Organylchlorosilanes with Dimethyl Sulfoxide in the Presence of Octamethyltrisiloxane
  作者：S. V. Basenko、I. A. Gebel'、E. V. Boyarkina、M. G. Voronkov

  DOI：10.1023/b:rugc.0000042423.40451.86

  日期：2004.6

  Dichloro(methyl)(vinyl)silane reacts with DMSO in the presence of octamethyltrisiloxane to form cyclooligomethyl(vinyl)siloxanes(MeViSiO)(n) (n = 3-6). The reaction involves disproportionation of octamethyltrisiloxane into hexamethyldisiloxane and decamethyltetrasiloxane. Along with the latter two products, insertion products of methyl vinyl silanone into both permethyloligosiloxanes were identified. Alkyltrichlorosilanes RSiCl3 (R = Me, Et) react with DMSO in the presence of octamethyltrisiloxane to form cyclic oligoalkyltrichlorosiloxanes (RCISiO)(m) (m = 3-6).
• Sokolow; Akimowa, Zhurnal Obshchei Khimii, 1956, vol. 26, p. 2276,2277;engl.Ausg.S.2545
  作者：Sokolow、Akimowa

  DOI：——

  日期：——