mono(2-(N-(2,6-diisopropylphenyl)iminomethyl)pyrrolyl)hafnium tribenzyl | 667419-95-6

• 英文名称: mono(2-(N-(2,6-diisopropylphenyl)iminomethyl)pyrrolyl)hafnium tribenzyl
• 英文别名: Hf((C4H3N)CHN(2,6-iPr2C6H3))(CH2Ph)3；Hf(DIP-pyr)(CH2Ph)3
• CAS: 667419-95-6
• 化学式: C₃₈H₄₂HfN₂
• 分子量: 705.255
• InChiKey: YMFBIVFINZRWGG-BLPBPUGCSA-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：

  2-[(2,6-diisopropylphenylimino)methyl]pyrrole 、 tetra(benzyl)hafnium 以 甲苯 为溶剂， 以61%的产率得到mono(2-(N-(2,6-diisopropylphenyl)iminomethyl)pyrrolyl)hafnium tribenzyl
  参考文献：
  名称：

  Preparation and characterization of iminopyrrolyl hafnium complexes as catalyst precursors for α-olefin polymerization

  摘要：

  Amido, chloro, and benzyl hafnium complexes bearing 2-(N-aryliminomethyl)pyrrole [(R-pyr)H, 1a: R=DIP=2-{N-(2,6-diisopropylphenyl)-iminomethyl}, 1b: R=XYL=2-{N-(2,6-dimethylphenyl)iminomethyl}, 1c: R=ANI=2-{N-(4-methoxyphenyl)iminomethyl}, 1d: R=TOL=2-{N-(4-methylphenyl)iminomethyl}] were prepared and characterized. The coordination modes of (R-pyr)(2)Hf(NMe2)(2) (2a-d) depend on the bulkiness of the aromatic substituent at the imine nitrogen of the ligands. In contrast, all (R-pyr)(2)HfCl2 (3a-d) have a C-2-symmetric octahedral structure. These diamido- and dichloro-bis(iminopyrrolyl)hafnium complexes, when combined with MMAO, become active catalysts for ethylene polymerization. Two types of hafnium benzyl complexes, (DIP-pyr)Hf(CH2Ph)(3) (4a) and (DIP-PYr)(2)Hf(CH2Ph)(2) (5a), were prepared by the alkane elimination reaction from reactions of Hf(CH2Ph)(4) with controlled amounts of iminopyrrole (1a). The mono(iminopyrrolyl)hafnium tribenzyl complex (4a) exhibited a high catalytic activity for I-hexene polymerization. (c) 2006 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.molcata.2006.01.070