[Cp*Hf(N-mesityl-4-methylpyridine-2-amido)Me2] | 1330629-45-2

• 英文名称: [Cp*Hf(N-mesityl-4-methylpyridine-2-amido)Me2]
• 英文别名: [(1,2,3,4,5-pentamethylcyclopentadienyl)Hf(N-mesityl-4-methylpyridine-2-amido)Me2]
• CAS: 1330629-45-2
• 化学式: C₂₇H₃₈HfN₂
• 分子量: 569.102
• InChiKey: RZTUWUPBAWMESF-UHFFFAOYSA-N

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

• 作为产物：
  描述：

  (η5-C5Me5)Hf(CH3)3 、 N-mesityl-4-methylpyridin-2-amine 以 甲苯 为溶剂， 以52%的产率得到[Cp*Hf(N-mesityl-4-methylpyridine-2-amido)Me2]
  参考文献：
  名称：

  Synthesis of Alumina-Terminated Linear PE with a Hafnium Aminopyridinate Catalyst

  摘要：

  Five different Ap (aminopyridinato) ligand stabilized hafnium complexes were synthesized and characterized through NMR spectroscopy, elemental analysis, and (to some extent) by X-ray crystal structure analysis. Moreover, a tunable ethylene polymerization catalyst system based on these complexes was tested in CCTP (coordinative chain transfer polymerization) with TEA (triethylaluminum) as the chain transfer agent. The catalyst precursor giving the highest degree of control, [Cp*Hf(Ap(H)DIP)Me-2] (Cp* = 1,2,3,4,5-pentamethylcyclopentadienyl ligand, Ap(H)DIP-H = N-(2,6-diisopropylpheny)pyridine-2-amine, Me = methyl), in the presence of high amounts of TEA was investigated regarding different parameters: e.g., temperature, ethylene pressure, catalyst/chain transfer agent ratio, and reaction time. The results showed that the new catalyst system is able to tolerate up to 5000 equiv of TEA and was able to produce linear alumina-terminated polyethylene with polydispersities down to 1.2.

  DOI：

  10.1021/om200355q