(η5-C5H5)[η5-C5H4Si(CH3)2CHCH2] | 195965-40-3

• 英文名称: (η5-C5H5)[η5-C5H4Si(CH3)2CHCH2]
• 英文别名: (η5-C5H4SiMe2CH=CH2)(η5-C5H5)TiCl2
• CAS: 195965-40-3
• 化学式: C₁₄H₁₈Cl₂SiTi
• 分子量: 333.168
• InChiKey: FMQGOIHFJDOMAQ-UHFFFAOYSA-L

计算性质

• 辛醇/水分配系数(LogP)：
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• 重原子数：
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• 可旋转键数：
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• 环数：
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• sp3杂化的碳原子比例：
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• 拓扑面积：
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• 氢给体数：
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• 氢受体数：
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反应信息

• 作为反应物：
  描述：

  (η5-C5H5)[η5-C5H4Si(CH3)2CHCH2] 、 Tris(6-dimethylsilylhexan-2-yloxy)-methylsilane 在 KARSTEDT催化剂 作用下， 以 四氢呋喃 为溶剂， 以75%的产率得到MeSi[OCH(Me)(CH2)4SiMe2CH2CH2SiMe2(η5-C5H4)(η5-C5H5)TiCl2]3
  参考文献：
  名称：

  Metallo-Carbosiloxan-Dendrimere mit Titanocendichlorid-Endgruppen

  摘要：

  The synthesis of titanocenedichloride end-grafted carbosiloxane dendrimers of the 1(st) and 2(nd) generation is reported. To find the optimal reaction conditions, Me2ClSiH (1) was reacted with (eta(5)-C5H4SiMe2CH = CH2)(eta(5)-C5H5)TiCl2 (2).The best result could be obtained with the Karstedt catalyst, whereby exclusively the beta-isomer ((eta(5)-C5H4SiMe2CH2CH2SiMe2Cl)(eta(5)-C5H5)TiCl2, 3) is formed. Under similar conditions Me3SiOCH(Me)(CH2)(4)SiMe2H (4) reacts with 2 to give (eta(5)-C5H4SiMe2CH2CH2SiMe2(CH2)(4)CH(Me)OSiMe3)(eta(5) -C5H5)TiCl2 (5). When using MeSi(OCH(Me)(CH2)(4)SiMe2H)(3) (6), Si(OCH(Me)(CH2)(4)SiMeH)(4) (8) and MeSi[O(CH2)(3)SiMe(OCH(Me)(CH2)(4)SiMe2H)(2)](3) (10) instead of I and 4, the respective metallo dendrimers MeSi[OCH(Me)(CH2)(4)SiMe2CH2CH2SiMe2(eta(5) -C5H4)(eta(5)-C5H5)TiC2](3) (7), Si[OCH(Me)(CH2)(4)SiMe2CH2CH2SiMe2(eta(5)-C5H4)(eta(5)-C5H5)TiCl2](4) (9) and MeSi{O(CH2)(3)SiMe[OCH(Me)(CH2)(4)SiMe2CH2CH2SiMe2(eta(5)-C5H4)(eta(5)-C5H5)TiCl2](2)}(3) (11) can be isolated.Compounds 3, 5, 7, 9 and 11 were characterised by elemental analysis as well as IR and NMR spectroscopy (H-1, C-13{H-1}, Si-29{H-1}. (c) 2004 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.jorganchem.2004.10.060

文献信息

• Polymerisation of ethylene or propylene with heterogeneous metallocene catalysts on clay minerals
  作者：Karin Weiss、Christine Wirth-Pfeifer、Monika Hofmann、Sandra Botzenhardt、Heinrich Lang、K. Brüning、E. Meichel

  DOI：10.1016/s1381-1169(01)00481-2

  日期：2002.5

  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.