1,1,3,4-tetramethyl-2,2,5,5-tetrakis(trimethylsilyl)-1-sila-3,4-diboracyclopentane | 161497-24-1

• 分子结构分类: 有机化合物 - 有机金属化合物
• 英文名称: 1,1,3,4-tetramethyl-2,2,5,5-tetrakis(trimethylsilyl)-1-sila-3,4-diboracyclopentane
• 英文别名: trimethyl-[1,1,3,4-tetramethyl-2,5,5-tris(trimethylsilyl)-1,3,4-siladiborolan-2-yl]silane
• CAS: 161497-24-1
• 化学式: C₁₈H₄₈B₂Si₅
• 分子量: 426.629
• InChiKey: LZKATMWHRDARMB-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  7.1
• 重原子数：
  25.0
• 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：
  0.0
• 氢给体数：
  0.0
• 氢受体数：
  0.0

反应信息

• 作为产物：
  描述：

  {bis(trimethylsilyl)methylene}methylborane 、 三（三甲代甲硅烷基）甲烷 、 十二甲基环己硅烷 以 正戊烷 为溶剂， 以77%的产率得到1,1,3,4-tetramethyl-2,2,5,5-tetrakis(trimethylsilyl)-1-sila-3,4-diboracyclopentane
  参考文献：
  名称：

  Expansion of Three-Membered Rings by the Insertion of Methyl(methylidene)borane MeB:C(SiMe3)2

  摘要：

  The methyl(methylidene)borane MeB = C(SiMe(3))(2) (1) and dimethylsilylene react in a 2:1 ratio to give the 1-sila-3,4-diboracyclopentane [-B(Me)-B(Me)-C(SiMe(3))(2)-Si(Me)(2)-C(SiMe(3))(2)-] (2), which crystallizes in the triclinic space group P1, with Lattice constants a = 16.648(5) Angstrom, b = 17.073(4) Angstrom, c = 11.490(3) Angstrom, alpha = 102.79(2)degrees, beta = 104.80(2)degrees, gamma = 62.76(2)degrees, and V = 2786(2) Angstrom(3); Z = 4. It is assumed that 2 is formed via the cyclic 1:1 adduct of 1 and SiMe(2), [-B(Me)-C(SiMe(3))(2)-Si(Me)(2)-] (3), the B-Si bond of which is subsequently added to the B-C double bond of a second molecule of 1. The azadiboriridine [-B(t-Bu)-B(t-Bu)-N(t-Bu)-] (4) undergoes a similar addition. to I to give the 1-aza-2,3,5-triboracyclopentane [-B(Me)-C(SiMe(3))(2)-B(t-Bu)-N(t-Bu)-B(t-Bu)-] (5).

  DOI：

  10.1021/om00003a061