dibromo[bis(trimethylsilyl)methyl](2,4,6-tris[bis(trimethylsilyl)methyl]phenyl)stannane | 820217-22-9

• 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: dibromo[bis(trimethylsilyl)methyl](2,4,6-tris[bis(trimethylsilyl)methyl]phenyl)stannane
• CAS: 820217-22-9
• 化学式: C₃₄H₇₈Br₂Si₈Sn
• 分子量: 990.195
• InChiKey: XOGPMBLGMHPDHL-UHFFFAOYSA-L

物化性质

• 熔点：
  219-221.5 °C(Solv: ethanol (64-17-5))
• 沸点：
  635.8±65.0 °C(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  13.77
• 重原子数：
  45.0
• 可旋转键数：
  13.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.82
• 拓扑面积：
  0.0
• 氢给体数：
  0.0
• 氢受体数：
  0.0

反应信息

• 作为反应物：
  描述：

  dibromo[bis(trimethylsilyl)methyl](2,4,6-tris[bis(trimethylsilyl)methyl]phenyl)stannane 在 lithium naphthalenide 、 PPh₃ 作用下， 以 四氢呋喃 、 氘代甲苯 为溶剂， 生成 2,4,6-tris[bis(trimethylsilyl)methyl]phenyl(bis(trimethylsilyl)methyl)Sn=S
  参考文献：
  名称：

  Tin−Chalcogen Double-Bond Compounds, Stannanethione and Stannaneselone:  Synthesis, Structure, and Reactivities

  摘要：

  The first isolation of diarylstannanethione (tin-sulfur double-bond compound) and diarylstannaneselone (tin-selenium double-bond compound), Tbt(Ditp)Sn=X (Tbt = 2,4,6-tris[bis(trimethylsilyl)methyl]phenyl; Ditp = 2,2"-diisopropyl-m-terphenyl-2'-yl; X = S and Se) was accomplished by dechalcogenation of the corresponding highly hindered tetrachalcogenastannolanes, Tbt(Ditp)SnX4. The Sn-119 NMR of stannanethione, Tbt(Ditp)Sn=S, and stannaneselone, Tbt(Ditp)Sn=Se, showed only one low-field broad signal at 531 and 440 ppm, respectively, characteristic of a tricoordinated tin, and hence, the stannanethione and stannaneselone display an intrinsic nature of tin-chalcogen double-bond compounds. The X-ray crystallographic analysis of the isolated stannaneselone, Tbt(Ditp)Sn=Se 5a, revealed a completely trigonal geometry around the central tin with a remarkably short Sn-Se bond length, indicative of structural similarity to a ketone.

  DOI：

  10.1021/ja048453h
• 作为产物：
  描述：

  1-bromo-2,4,6-tris[bis(trimethylsilyl)methyl]benzene 在 t-BuLi 、 Mg 、 LiAlH₄ 作用下， 以 四氢呋喃 、 乙醚 、 正戊烷 为溶剂， 生成 dibromo[bis(trimethylsilyl)methyl](2,4,6-tris[bis(trimethylsilyl)methyl]phenyl)stannane
  参考文献：
  名称：

  Tin−Chalcogen Double-Bond Compounds, Stannanethione and Stannaneselone:  Synthesis, Structure, and Reactivities

  摘要：

  The first isolation of diarylstannanethione (tin-sulfur double-bond compound) and diarylstannaneselone (tin-selenium double-bond compound), Tbt(Ditp)Sn=X (Tbt = 2,4,6-tris[bis(trimethylsilyl)methyl]phenyl; Ditp = 2,2"-diisopropyl-m-terphenyl-2'-yl; X = S and Se) was accomplished by dechalcogenation of the corresponding highly hindered tetrachalcogenastannolanes, Tbt(Ditp)SnX4. The Sn-119 NMR of stannanethione, Tbt(Ditp)Sn=S, and stannaneselone, Tbt(Ditp)Sn=Se, showed only one low-field broad signal at 531 and 440 ppm, respectively, characteristic of a tricoordinated tin, and hence, the stannanethione and stannaneselone display an intrinsic nature of tin-chalcogen double-bond compounds. The X-ray crystallographic analysis of the isolated stannaneselone, Tbt(Ditp)Sn=Se 5a, revealed a completely trigonal geometry around the central tin with a remarkably short Sn-Se bond length, indicative of structural similarity to a ketone.

  DOI：

  10.1021/ja048453h