trichloro(N,N'-dicyclohexyl-2,2-bis(3,5-dimethyl-pyrazol-1-yl)-acetamidine)yttrium | 1225023-57-3

• 英文名称: trichloro(N,N'-dicyclohexyl-2,2-bis(3,5-dimethyl-pyrazol-1-yl)-acetamidine)yttrium
• CAS: 1225023-57-3
• 化学式: C₂₄H₃₈Cl₃N₆Y
• 分子量: 605.871
• InChiKey: PPJLBFAJMNRRFN-UHFFFAOYSA-K

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：

  N,N’-dicyclohexyl-2,2-bis-(3,5-dimethylpyrazol-1-yl)-acetamidine 、 氯化钇 以 四氢呋喃 为溶剂， 以86%的产率得到trichloro(N,N'-dicyclohexyl-2,2-bis(3,5-dimethyl-pyrazol-1-yl)-acetamidine)yttrium
  参考文献：
  名称：

  The role of the ionic radius in the ethylene polymerization catalyzed by new group 3 and lanthanide scorpionate complexes

  摘要：

  A series of new monomeric group 3 and lanthanide [N,N,N]-heteroscorpionate triflate-complexes [Ln(OTf)(2)(cybpamd)(THF)] {Ln = Sc (2), Y (3), La (4), Nd (5), Sm (6), Dy (7), Yb (8); OTf = SO3CF3; cybpamd = N,N'-dicyclohexyl-2,2-bis-(3,5-dimethyl-pyrazol-1-yl)-acetamidinate} has been synthesized and characterized. The behavior of 2-8 as catalysts in olefin polymerization was investigated after proper activation with methylaluminoxane and the comparative results are reported. The activity of the catalytic systems towards ethylene polymerization is affected by the nature of the metal center and linearly grows with the ionic radius, with the exception of the scandium derivative. From DFT calculations it was possible to correlate the activity data with computed properties of the metal-alkyl bonds of the catalytically active species. The very narrow polydispersivities showed that all the considered systems act as single-site catalysts and high-weight linear polyethylene polymers were always obtained. (C) 2009 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.molcata.2009.10.021