2-((2,6-diisopropylphenylimino)methyl)pyridine nickel dimethyl | 215594-97-1

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 2-((2,6-diisopropylphenylimino)methyl)pyridine nickel dimethyl
• CAS: 215594-97-1
• 化学式: C₂₀H₂₈N₂Ni
• 分子量: 355.146
• InChiKey: PLHGKZZTIZWCCO-TXBTUDEPSA-N

计算性质

• 辛醇/水分配系数(LogP)：
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反应信息

• 作为反应物：
  描述：

  tetrakis[3,5-bis(trifluoromethyl)phenyl]boric acid bis(diethyl ether) complex 、 2-((2,6-diisopropylphenylimino)methyl)pyridine nickel dimethyl 以 乙醚 为溶剂， 以95%的产率得到[2-((2,6-diisopropylphenylimino)methyl)pyridine nickel methyl diethyletherate] (tetrakis[3,5-bis(trifluoromethyl)phenyl]borate)
  参考文献：
  名称：

  The role of bulky substituents in the polymerization of ethylene using late transition metal catalysts: a comparative study of nickel and iron catalyst systems

  摘要：

  A series of nickel(II) and iron(II) complexes of the general formula [LMX2] containing bidentate (for M = Ni) and tridentate (for M = Fe) heterocycle-imine ligands L have been synthesized and characterized. Compared to the well-known alpha-diimine nickel and bis(imino)pyridine iron catalysts, these systems contain a bulky imine substituent on one side and a non-bulky N-heterocycle on the other. Depending on the ligand and the conditions used, either four- or five-coordinate complexes are obtained in the case of nickel. Iron complexes are generally five-coordinate, even with potentially tetradentate ligands. Activation of these precatalysts with MAO affords active catalyst systems for the oligomerization/polymerization of ethylene. Compared to alpha-diimine nickel and bis(imino)pyridine iron catalysts, both- metal systems provide only half of the steric protection and consequently the catalytic activities and the degree of polymerization are significantly lower. Lower activities are attributed to a reduced stability of the active species under polymerization conditions, whereas the lower molecular weights are a result of increased beta-H transfer rates. Variations within the heterocyclic component of the ligand reveal that both steric and electronic factors influence the polymerization behavior of these catalysts. (C) 2002 Elsevier Science B.V. All rights reserved.

  DOI：

  10.1016/s0020-1693(02)01293-8
• 作为产物：
  描述：

  2-(((2,6-diisopropylphenyl)imino)methyl)pyridine 、 Py₂Ni(Me)₂ 以 甲苯 为溶剂， 以94%的产率得到2-((2,6-diisopropylphenylimino)methyl)pyridine nickel dimethyl
  参考文献：
  名称：

  Synthesis of dialkyl, diaryl and metallacyclic complexes of Ni and Pd containing pyridine, α-diimines and other nitrogen ligands

  摘要：

  The alkylation of NiCl(2)py(4) or PdCl(2)py(2) with organomagnesium or organolithium reagents affords dialkyl complexes cis-MR(2)py(2) (R = Me, CH2SiMe3, CH2Ph, CH2CMe2Ph, 2,4,6-C6H2Me3). The methyl and trimethylsilyl derivatives undergo ligand exchange reactions with chelating nitrogen ligands (alpha-diimines or 2-imidoylpyridines), yielding the corresponding dialkyl derivatives in good to excellent yields. A catalytic amount of PMe3 induces the transformation of the nickel complex Ni(CH2CMe2Ph)(2)py(2) into the metallacyclic derivative NiCH2CMe2-o-C6H4(py)(2). The latter, and the related palladacycle Pd(CH2CMe2-o-C6H4) (cod), also undergo facile ligand exchange reactions. (C) 2003 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/s0022-328x(03)00691-0