(n-BuCp)2ZrH3AlH2 | 914809-03-3

• 英文名称: (n-BuCp)2ZrH3AlH2
• 英文别名: (nBuCp)2ZrH3AlH2
• CAS: 914809-03-3
• 化学式: C₁₈H₃₁AlZr
• 分子量: 365.65
• InChiKey: MDMNRUJFFNJNRF-UHFFFAOYSA-N

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：

  双(正丁基环戊二烯基)二氯化锆 、 lithium aluminium tetrahydride 以 乙醚 为溶剂， 以99%的产率得到(n-BuCp)2ZrH3AlH2
  参考文献：
  名称：

  基于铝氢化物-锆茂配合物的均相乙烯聚合催化体系

  摘要：

  报道了使用衍生自锆茂铝氢化物配合物与甲基铝氧烷或B（C 6 F 5）3活化的催化剂的乙烯聚合。Cp的混合物的变温NMR谱* 2 ZRH 3的AlH 2或CP” 2 ZRH 3的AlH 2和过量的B（C 6 ˚F 5）3揭示了二-或多核茂金属离子对的形成设有一个末端或两个末端并桥接因氢化物夺取而产生的硼氢化物抗衡阴离子HB（C 6 F 5）3。在更高T，具有末端HB（C 6 F 5）3抗衡离子的离子对分解，释放出的AlH 3降解B（C 6 F 5）3以提供（C 6 F 5）n AlH 3 - n的混合物在Cp * 2 ZrH 3 AlH 2的情况下，新的离子对与二硼氢化物抗衡阴离子[Cp * 2 ZrH] [（μ-H）2 B（C 6 F 5）2]。后一种化合物是由Cp * 2 ZrH 2和HB（C 6 F 5）2独立制备的，并且在乙烯聚合中具有活性。然而，它的活性比由Cp * 2 ZrH 3

  DOI：

  10.1021/om0604730

文献信息

• Novel supported catalysts for ethylene polymerization based on aluminohydride-zirconocene complexes
  作者：Rogelio Charles、Rebeca González-Hernández、Elsa Morales、Javier Revilla、Luis E. Elizalde、Gregorio Cadenas、Odilia Pérez-Camacho、Scott Collins

  DOI：10.1016/j.molcata.2009.03.018

  日期：2009.7

  Ethylene polymerization using catalysts derived from activation of zirconocene aluminohydride complexes, supported on silica, pretreated with methylaluminoxane (MAO), is described. The novel catalyst compositions were compared to those using conventional zirconocene dichloride complexes and characterized by SEM/EDX and DRIFT spectroscopy. Supported catalysts were prepared which featured various surface Al:Zr ratios. When using excess MAO as both activator and scavenger, the catalysts containing the most Zr per g of support gave rise to the most active formulations: the high activities in the presence of excess MAO are due, in part, to catalyst leaching prior to and/or during polymerization. When triisobutylaluminum (TIBAL) was used as scavenger. the supported catalysts that featured a higher surface Al:Zr ratio had higher activity than those prepared at the lower AI:Zr ratios. The activity of the aluminohydride complexes was significantly higher than that of the corresponding dichloride complexes, when activated by MAO while the in the presence of TIBAL. there was little difference in performance between the two catalyst precursors. (C) 2009 Elsevier B.V. All rights reserved.