1,1'-[(1,1,3,3-Tetramethyldisiloxane-1,3-diyl)di(ethane-2,1-diyl)]bis(pentamethyldisiloxane) | 18537-50-3

• 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: 1,1'-[(1,1,3,3-Tetramethyldisiloxane-1,3-diyl)di(ethane-2,1-diyl)]bis(pentamethyldisiloxane)
• 英文别名: 2-[dimethyl(trimethylsilyloxy)silyl]ethyl-[2-[dimethyl(trimethylsilyloxy)silyl]ethyl-dimethylsilyl]oxy-dimethylsilane
• CAS: 18537-50-3
• 化学式: C₁₈H₅₀O₃Si₆
• 分子量: 483.106
• InChiKey: PLFNVOPDPWUMSB-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  7.53
• 重原子数：
  27
• 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：
  27.7
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  五甲基二硅氧烷 、 四甲基二乙烯基二硅氧烷 在 dichloro(1,5-cyclooctadiene)platinum(II) 作用下， 以75%的产率得到1,1'-[(1,1,3,3-Tetramethyldisiloxane-1,3-diyl)di(ethane-2,1-diyl)]bis(pentamethyldisiloxane)
  参考文献：
  名称：

  摘要：

  The rate of addition of MeSiH(OSiMe3)(2), Me2SiHOSiMe3, and (Me2SiH)(2)O to vinylsiloxanes ViMeSi(OSiMe3)(2), ViMe(2)SiOSiMe(3), and (ViMe(2)Si)(2)O in the presence of square-planar platinum complexes [Pt(LL')X-2] (where L and L' are neutral ligands, and X is an anionic ligand) decreases in the following Z' series of L and L': Ph3PS > MeS(O)Tol-p > MeCOD > CH2=CH2 approximate to COD > Et2SO > Et2S > Me2SO much greater than 2-aminopyridine > Py > 2-methylpyridine. Variation of X, the ligands L and L' remaining unchanged, leads to decrease in the reaction rate in the series: C2O42- > NO3- > Cl- much greater than Br. Mixed-ligand complexes like (-)-[Pt(MeSOTol-P)PyCl2] having a cis structure are more efficient catalysts then the corresponding trails isomers in the hydrosilylation of siloxanes. Reactions of sulfoxide platinum(II) complexes with vinylsiloxanes and silicon hydrides result in isomerization of the metal complex and dissociation of the sulfoxide; bis-sulfoxide complexes undergo deoxygenation of the sulfoxide ligand with formation of colloidal platinum. It was presumed that the active form of the catalyst is its trans isomer; it reacts with silicon hydride, leading to replacement of the sulfoxide ligand in the inner sphere of platinum(II) complex. The reactivity of silicon hydrides toward vinylsiloxanes in the presence of sulfoxide platinum(II) complexes decreases in the series (Me2SiH)(2)O > Me2SiHOSiMe3 > MeHSi(OSiMe3)(2), and the vinylsiloxanes form the following reactivity series: ViMe(2)SioSiMe(3) > ViMeSi(OSiMC3)(2) > (ViSiMe(2))(2)O. These series conform to increase of the positive charge on the silicon atom and decrease in steric hindrance created by the substituents thereon.

  DOI：

  10.1023/a:1014292310639

文献信息

• Spectral study of the catalytic reaction of hydrosiloxanes with vinylsiloxanes
  作者：D. A. de Vekki、I. V. Viktorovskii、N. K. Skvortsov

  DOI：10.1007/s11176-005-0004-9

  日期：2004.9

  1H, 13C, and IR spectroscopy and gas chromatography-mass spectrometry were used to study addition of hydrosiloxanes to vinylsiloxanes in the presence of Pt(II) complexes. Along with hydrosilylation, dehydrocondensation and disproportionation of hydrosiloxanes occur.

  使用 1H、13C 和红外光谱以及气相色谱-质谱法研究在 Pt(II) 配合物存在下氢硅氧烷与乙烯基硅氧烷的加成反应。随着氢化硅烷化，氢化硅氧烷发生脱氢缩合和歧化。
• Hydrosilylation of low-molecular siloxanes in the presence of photactivated alkene and sulfoxide platinum(II) complexes
  作者：D. A. de Vekki、N. K. Skvortsov

  DOI：10.1134/s107036320601021x

  日期：2006.1

  Hydrosilylation of tetramethyldivinyldisiloxane with pentamethyl- and tetramethyldisiloxane in the presence of photoactivated alkene and sulfoxide platinum(II) complexes was studied. The most active photoactivated catalysts are bis-sulfoxide platinum complexes; an additional photosensitive center, the oxalate ligand, enhances the effect of photoirradiation.
• ——
  作者：D. A. de Vekki、V. A. Ol'sheev、V. N. Spevak、N. K. Skvortsov

  DOI：10.1023/a:1014292310639

  日期：——

  The rate of addition of MeSiH(OSiMe3)(2), Me2SiHOSiMe3, and (Me2SiH)(2)O to vinylsiloxanes ViMeSi(OSiMe3)(2), ViMe(2)SiOSiMe(3), and (ViMe(2)Si)(2)O in the presence of square-planar platinum complexes [Pt(LL')X-2] (where L and L' are neutral ligands, and X is an anionic ligand) decreases in the following Z' series of L and L': Ph3PS > MeS(O)Tol-p > MeCOD > CH2=CH2 approximate to COD > Et2SO > Et2S > Me2SO much greater than 2-aminopyridine > Py > 2-methylpyridine. Variation of X, the ligands L and L' remaining unchanged, leads to decrease in the reaction rate in the series: C2O42- > NO3- > Cl- much greater than Br. Mixed-ligand complexes like (-)-[Pt(MeSOTol-P)PyCl2] having a cis structure are more efficient catalysts then the corresponding trails isomers in the hydrosilylation of siloxanes. Reactions of sulfoxide platinum(II) complexes with vinylsiloxanes and silicon hydrides result in isomerization of the metal complex and dissociation of the sulfoxide; bis-sulfoxide complexes undergo deoxygenation of the sulfoxide ligand with formation of colloidal platinum. It was presumed that the active form of the catalyst is its trans isomer; it reacts with silicon hydride, leading to replacement of the sulfoxide ligand in the inner sphere of platinum(II) complex. The reactivity of silicon hydrides toward vinylsiloxanes in the presence of sulfoxide platinum(II) complexes decreases in the series (Me2SiH)(2)O > Me2SiHOSiMe3 > MeHSi(OSiMe3)(2), and the vinylsiloxanes form the following reactivity series: ViMe(2)SioSiMe(3) > ViMeSi(OSiMC3)(2) > (ViSiMe(2))(2)O. These series conform to increase of the positive charge on the silicon atom and decrease in steric hindrance created by the substituents thereon.