tridurylsilylium tetrakis(pentafluorophenyl)borate

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: tridurylsilylium tetrakis(pentafluorophenyl)borate
• 英文别名: Tetrakis(2,3,4,5,6-pentafluorophenyl)boranuide;tris(2,3,5,6-tetramethylphenyl)silanylium
• 化学式: C₂₄BF₂₀*C₃₀H₃₉Si
• 分子量: 1106.77
• InChiKey: DUIMRABHGNZOBP-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  11.75
• 重原子数：
  76
• 可旋转键数：
  7
• 环数：
  7.0
• sp3杂化的碳原子比例：
  0.22
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  21

反应信息

• 作为反应物：
  描述：

  三乙基氧膦 、 tridurylsilylium tetrakis(pentafluorophenyl)borate 以 氘代苯 、 苯 为溶剂， 反应 1.0h， 生成
  参考文献：
  名称：

  硅离子路易斯酸性的定量评估

  摘要：

  The Lewis acidity of several aryl-substituted tetrylium ions was classified experimentally by applying the Gutmann-Beckett method and computationally by calculation Of fluoride ion affinities (FIA) (tetrel elements = Si, Ge). According to these measures, tetrylium ions are significantly more Lewis acidic than boranes, and aryl-substituted silylium borates are among the strongest isolable Lewis acids. A fine-tuning of the Lewis acidity of silylium ions is possible by taking advantage of electronic and/or steric substituent effects.

  DOI：

  10.1021/acs.organomet.5b00556
• 作为产物：
  描述：

  1,1-diphenyl-(triethylsilyl)ethylium tetrakis(pentafluorophenyl)borate 、 allyltridurylsilane 以 氘代苯 为溶剂， 生成 tridurylsilylium tetrakis(pentafluorophenyl)borate
  参考文献：
  名称：

  The Tridurylsilylium and Tridurylstannylium Cations:  Free and Not So Free

  摘要：

  Allyltridurylsilane has been prepared and converted to the tridurylsilylium cation by treatment with electrophiles. Allyltridurylstannane has been prepared and converted to the tridurylstannylium cation under similar conditions. The Si-29 chemical shift of the silylium cation indicates that it is free and tricoordinate, whereas the Sn-119 chemical shift of the stannylium cation indicates that it maintains loose fourth coordination with the solvent or the anion.

  DOI：

  10.1021/jo010772t

文献信息

• Silylium Ion/Phosphane Lewis Pairs
  作者：Matti Reißmann、André Schäfer、Sebastian Jung、Thomas Müller

  DOI：10.1021/om400559x

  日期：2013.11.25

  ability to activate molecular hydrogen by reaction of silylium ion/phosphane Lewis pairs is dominated by thermodynamic and steric factors. For a given silylium ion increasing proton affinity and increasing steric hindrance of the phosphane proved to be beneficial. Nevertheless, excessive steric hindrance leads to a breakdown of the dihydrogen-splitting activity of a silylium/phosphane Lewis pair.

  研究了一系列硅离子/膦路易斯对的反应性。硼酸三芳基甲硅烷基酯4 [B（C 6 F 5）4 ]与空间受阻的膦2形成中等稳定性的沮丧的路易斯对（FLP）。这些FLP中的某些能够在环境条件下裂解二氢。庞大的三烷基膦与三芳基甲硅烷基离子的结合可用于以甲硅烷基酰基phosph离子的形式隔离CO 2 12。通过甲硅烷基离子/膦路易斯对的反应来活化分子氢的能力主要由热力学和空间因素决定。对于给定的甲硅烷基离子，增加膦的质子亲和力和增加空间位阻被证明是有益的。然而，过大的空间位阻导致甲硅烷基/膦路易斯对的二氢分裂活性的破坏。