| 455928-62-8

• 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
• CAS: 455928-62-8
• 化学式: C₂₀H₅₂O₂Si₅
• 分子量: 465.059
• InChiKey: BTKFCDZBYWALFY-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.89
• 重原子数：
  27.0
• 可旋转键数：
  16.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  18.46
• 氢给体数：
  0.0
• 氢受体数：
  2.0

反应信息

• 作为反应物：
  描述：

  (η5-C5H5)[η5-C5H4Si(CH3)2CHCH2] 、 在 Karstead catalyst 作用下， 以 四氢呋喃 为溶剂， 以100%的产率得到(CH3)2Si(OCH2CH2CH2Si(CH3)2CH2CH2Si(CH3)2[η5-C5H4](η5-C5H5)Cl2
  参考文献：
  名称：

  Polymerisation of ethylene or propylene with heterogeneous metallocene catalysts on clay minerals

  摘要：

  Heterogeneous metallocene catalysts avoid reactor fouling in olefin polymerisations. For technical use the metallocene catalysts must be fixed on carriers. Silica is one of the favoured inorganic carriers. But the activities of heterogeneous metallocene catalysts on silica in ethylene and propylene polymerisation are often lower than those of comparable homogeneous catalyst systems.We tested the clay minerals kaolin and montmorillonite as inorganic carriers for the polymerisation of ethylene and propylene with commercially available titanocenes and zirconocenes and also with new types of titanocenes.The heterogeneous catalysts on kaolin were less active in ethylene polymerisation as comparable homogeneous catalysts and they were not active in propylene polymerisation. In contrast the heterogeneous catalysts on montmorillonite are often more active in ethylene or propylene polymerisation than comparable homogeneous systems. As cocatalysts trimethylaluminium (AlMe3, TMA) and triisobutylaluminium (Al((BU3)-B-i), TIBA) were used for heterogeneous polymerisations. As catalysts commercially available titanocenes and zirconocenes and also four titanocenes with unusual structures were tested which Lang et al. had synthesised.The high activities in ethylene or propylene polymerisations with montmorillonite may be due to the special structure of the montmorillonite carrier. (C) 2002 Elsevier Science B.V. All rights reserved.

  DOI：

  10.1016/s1381-1169(01)00481-2