eta.1,η5-tert-butyl-(3,6-bis-tert-butylfluorenyl-dimethylsilyl)amidodichlorotitanium | 329722-49-8

• 英文名称: eta.1,η5-tert-butyl-(3,6-bis-tert-butylfluorenyl-dimethylsilyl)amidodichlorotitanium
• 英文别名: [3,6-tBuC13H6SiMe2NtBu]TiCl2
• CAS: 329722-49-8
• 化学式: C₂₇H₃₉Cl₂NSiTi
• 分子量: 524.485
• InChiKey: JXFBHRIVEOEOOO-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：

  eta.1,η5-tert-butyl-(3,6-bis-tert-butylfluorenyl-dimethylsilyl)amidodichlorotitanium 、 甲基锂 以 甲苯 为溶剂， 生成 [3,6-tBuC13H6SiMe2NtBu]TiMe2
  参考文献：
  名称：

  Syndiotactic-enriched propylene–styrene copolymers using fluorenyl-based half-titanocene catalysts

  摘要：

  The constrained geometry complexes {3,6-'Bu2C13H6SiMe2N'Bu}TiCl2 (X=Cl, 1; Me, 2), in combination with MAO or borane activators, have been investigated in the copolymerization of propylene with styrene at 25-60 degrees C, 1-5 atm. Both systems were found to give styrene-propylene (PP-PS) copolymers with up to 24 mol% of styrene incorporated and moderate molecular weights (M-w = 14,000-88,000; M-w/M-n = 1.58-2.32). Addition of some ethylene to the styrene-propylene feed improves the catalytic polymerization activity. The PP-PS copolymers feature a syndiotactic-enriched polypropylene microstructure (r > 92%), with randomly distributed single styrene and/or short polystyrene units. (c) 2006 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.molcata.2006.01.026
• 作为产物：
  描述：

  四氯化钛 、 dimethylsilyl-(tertiarybutylamino)-(3,6-ditertiarybutylfluorene) 在 methyl lithium 作用下， 以 正戊烷 为溶剂， 生成 eta.1,η5-tert-butyl-(3,6-bis-tert-butylfluorenyl-dimethylsilyl)amidodichlorotitanium
  参考文献：
  名称：

  Preparation and crystal structures of the complexes (η5-C5H3TMS–CMe2–η5-C13H8)MCl2 and [3,6-ditButC13H6–SiMe2–NtBu]MCl2 (M=Hf, Zr or Ti): mechanistic aspects of the catalytic formation of a isotactic–syndiotactic stereoblock-type polypropylene

  摘要：

  The reaction of MCl4, (M = Zr or Hf) with the dilithium salt of 2-(3-trimethylsilyl-cydopentadienyl)-2-florenylpropane in pentane leads to the formation of the complexes (eta (5)-C5H3TMS-CMe2-eta (5)-C13H8)MCl2 (M = Zr or Hf; TMS = trimethylsilyl). The X-ray diffraction data show that both the fluorenyl and cyclopentadienyl groups are 175 bonded to the transition metal in these complexes in the solid phase. The polymerization data and the polymer microstructure, however, clearly indicate that at least after the activation with MAO the active species formed with these molecules show very dynamic bonding behavior and their substituted cyclopentadienyl group changes its hapticity rapidly and frequently during the course of the polymerization. (C) 2001 Published by Elsevier Science B.V. All rights reserved.

  DOI：

  10.1016/s0022-328x(00)00863-9