| 756863-63-5

• CAS: 756863-63-5
• 化学式: C₁₁H₁₉Cl₂NSiZr
• 分子量: 355.494
• InChiKey: XOZIBNBVEZURAL-UHFFFAOYSA-L

计算性质

• 辛醇/水分配系数(LogP)：
  None
• 重原子数：
  None
• 可旋转键数：
  None
• 环数：
  None
• sp3杂化的碳原子比例：
  None
• 拓扑面积：
  None
• 氢给体数：
  None
• 氢受体数：
  None

反应信息

• 作为产物：
  描述：

  Zr(η(5)-C5H4SiMe2Cl)Cl3 、 正丁胺 在 三乙胺 作用下， 以 甲苯 为溶剂， 以35%的产率得到
  参考文献：
  名称：

  Role of Amine Structure and Site Isolation on the Performance of Aminosilica-Immobilized Zirconium CGC-Inspired Ethylene Polymerization Catalysts

  摘要：

  The homogeneous zirconium complex (CpSiMe2Cl)ZrCl3 is immobilized onto three different aminosilica supports, resulting in supported constrained-geometry-inspired zirconium complexes that, when combined with methylalumoxane (MAO), are active for the homopolymerization of ethylene to produce linear polyethylenes. The structure of the immobilized metal species is shown to depend on both the nature of the amine groups on the surface (primary vs secondary) and the amine surface density (densely loaded vs site-isolated). Diffuse-reflectance ultraviolet-visible (UV-vis) spectra of the metallated solids indicates that a true, immobilized constrained-geometry catalyst (CGC) is likely only produced on the silica that contains isolated primary amine sites. The polymerization data support the hypothesis that a traditional constrained-geometry Zr catalyst exhibits higher catalytic activity compared to a more open metal center that is likely the primary species produced on a densely loaded aminosilica surface. MAO causes significant leaching of the immobilized catalysts, possibly due to the cleavage of the Si-O-Si surface linkage.

  DOI：

  10.1021/om049765w