bis{2-[((2,6-diisopropylphenyl)imino)methyl]quinoline}-Mn(II)Cl₂ | 928757-46-4

• 英文名称: bis{2-[((2,6-diisopropylphenyl)imino)methyl]quinoline}-Mn(II)Cl₂
• 英文别名: bis(2-[((2,6-diisopropylphenyl)imino)methyl]quinoline)manganese(II) dichloride
• CAS: 928757-46-4
• 化学式: C₄₄H₄₈Cl₂MnN₄
• 分子量: 758.736
• InChiKey: YZBCWIYSRUIRAA-VMZCAHOVSA-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

• 作为产物：
  描述：

  2,6-diisopropyl-N-(quinolin-2-ylmethylene)aniline 、 manganese(ll) chloride 以 甲苯 为溶剂， 反应 48.0h， 以90%的产率得到bis{2-[((2,6-diisopropylphenyl)imino)methyl]quinoline}-Mn(II)Cl₂
  参考文献：
  名称：

  Synthesis and crystal structure determination of Mn(II) Schiff base complexes and their performance in ethene polymerization

  摘要：

  Mn(II) complexes 1-10, of which eight are novel, were prepared in high yields by reacting MnCl2 with bidentate N,N'-imine-pyridine and N,N'-imine-quinoline-type donor ligands having different kinds of chemical modifications. The complexes were fully characterized by elemental analysis, mass spectrometry and IR spectroscopy. Crystal structures of 6, 7 and 9 were determined by X-ray crystallography and the results showed that 6 has a dimeric square-pyramidal geometry, whereas 7 and 9 have distorted octahedral structures. Magnetic studies on the high spin complexes 6 and 9 showed that the former exhibits a weak intramolecular antiferromagnetic interaction through the chloride-bridging ligands with a magnetic exchange coupling J = -0.46(6) cm(-1), whereas the latter, as expected for its mononuclear structure, only shows very weak intermolecular interactions and/or zero-field splitting effects. All the complexes were activated with methylaluminoxane and investigated under low pressure (5 bar) for ethene polymerization at 60 degrees C. Complexes 1 and 6-10 showed catalytic activity. The prepared polyethenes exhibited high molar masses (296000-399000 g/mol) and high melting temperatures (133-140 degrees C). The low molar mass distribution values of 2.15-2.55 indicated single-site polymerization behavior. (c) 2013 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.poly.2013.03.063

文献信息

• Manganese(II) Complexes in Ethene Polymerization
  作者：Katariina Yliheikkilä、Kirill Axenov、Minna T. Räisänen、Martti Klinga、Mikko P. Lankinen、Mika Kettunen、Markku Leskelä、Timo Repo

  DOI：10.1021/om0608105

  日期：2007.2.1

  A series of manganese(II) dichloro complexes made in situ and bearing mainly various nitrogen ligands was studied with a parallel screening method in order to identify catalytically active complexes for ethene polymerization using methylaluminoxane (MAO) as a cocatalyst. From the series two of the most active octahedral manganese(II) complexes, those bearing tetradentate nitrogen ligands with chiral bridges, [N, N'-bis( quinoline-2-methylene) diiminocyclohexane] MnCl2 (1) and N,N'-(6,6'-dimethylbiphenyl-2,2'-diyl)-bis[(2- pyridyl) methyl] diimine} MnCl2 (2), were selected for more detailed studies. According to their solid-state structures, it is common for these C-2-symmetric manganese complexes to have a distorted-octahedral coordination geometry where chlorides occupy cis positions with wide Cl-Mn-Cl angles (132-135). The highest activity in ethene polymerization (67 kg of PE/((mol of Mn) h)) was obtained with 1/MAO at 80 degrees C. Furthermore, the alkylation of 1 and 2 with MeMgBr and (benzyl) MgBr was investigated, but only their monobenzyl derivatives were isolable.