Ni[C6H5C(O)CHC(N-2,6-(i)Pr2C6H3)CH3]2 | 634595-18-9

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: Ni[C6H5C(O)CHC(N-2,6-(i)Pr2C6H3)CH3]2
• CAS: 634595-18-9
• 化学式: C₄₄H₅₂N₂NiO₂
• 分子量: 699.599
• InChiKey: CZTYIBRXWGQJAW-VZPHPMQLSA-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：

  3-(2,6-diisopropylphenyl)amino-1-phenyl-but-2-en-4-one 、 tetraethylammonium tetrabromoniccolate(II) 在 t-BuOK 作用下， 以 叔丁醇 为溶剂， 以46.1%的产率得到Ni[C6H5C(O)CHC(N-2,6-(i)Pr2C6H3)CH3]2
  参考文献：
  名称：

  Nickel(II) Complexes Bearing N,O-Chelate Ligands:  Synthesis, Solid-Structure Characterization, and Reactivity toward the Polymerization of Polar Monomer

  摘要：

  Two new moisture- and air-stable bis(beta-ketoamino)nickel(II) complexes Ni[R1C(O)CHC-(NAr)R2](2) (Ar = 2,6-(Pr2C6H3)-Pr-i; R1 = R2 = CH3, 1; R1 = C6H5, R2 = CH3, 2), together with the moderately stable complex Ni-2[CH3C(O)CHC(O)CH3](4)[(H2NBu)-Bu-t](2) (3), which bears a monoanionic 0,O-chelate bidentate beta-diketone and an sp(3)-N atom of (BuNH2)-Bu-t mixed ligands, were synthesized and characterized. The solid-state structures of the complexes have been determined by single-crystal X-ray diffractions. Additionally, these new complexes act as catalyst precursors for methyl methacrylate polymerization after activation with methylaluminoxane (MAO). The polymers obtained by 1 and 2 show broader polydispersity than that obtained by 3. C-13 NMR analyses indicate that these catalytic systems initiate MMA polymerization to yield PMMA with rich syndiotacticity microstructure.

  DOI：

  10.1021/om030292n

文献信息

• Synthesis, structure and norbornene polymerization behavior of nickel complexes bearing two β-ketoiminato chelate ligands
  作者：Ya-Zheng Zhu、Jing-Yu Liu、Yue-Sheng Li、Yue-Jin Tong

  DOI：10.1016/j.jorganchem.2004.01.028

  日期：2004.4

  A series of nickel(II) complexes bearing two nonsymmetric bidentate β-ketoiminato chelate ligands have been prepared, and the structures of complexes [(2,6-Me2C6H3)NC(CH3)C(H)C(Ph)O]2Ni (4a) and [(2,6-Me2C6H3)NC(CH3)C(H)C(CF3)O]2Ni (4c) have been confirmed by X-ray crystallographic analysis. These nickel(II) complexes were investigated as catalysts for the vinylic polymerization of norbornene. Using

  制备了一系列带有两个不对称双齿β-酮亚氨基螯合配体的镍（II）配合物，并且配合物的结构[（2,6-Me 2 C 6 H 3）NC（CH 3）C（H）C（ Ph] O] 2 Ni（4a）和[（2,6-Me 2 C 6 H 3）NC（CH 3）C（H）C（CF 3）O] 2 Ni（4c）已经通过X射线晶体学分析确认。研究了这些镍（II）配合物作为降冰片烯乙烯基聚合的催化剂。使用改性的甲基铝氧烷（MMAO）作为助催化剂，这些络合物显示出很高的活性并生产出高分子量的聚合物。观察到高达1.16×10 4 kg / mol Ni  ·h的催化活性和高达870 kg / mol的聚合物的粘均分子量。通过改变反应参数如Al / Ni摩尔比，降冰片烯/催化剂摩尔比，单体浓度，聚合反应温度和时间，可以在宽范围内控制催化剂活性，聚合物产率和聚合物分子量。