dichloro(N,N'-bis(p-ethoxybenzylidene)-1,2-diiminoethane)zinc(II) | 1093357-35-7

• 英文名称: dichloro(N,N'-bis(p-ethoxybenzylidene)-1,2-diiminoethane)zinc(II)
• CAS: 1093357-35-7
• 化学式: C₂₀H₂₄Cl₂N₂O₂Zn
• 分子量: 460.719
• InChiKey: HLNTXIZZJZFIPZ-UHFFFAOYSA-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：

  N,N'-bis(p-ethoxybenzylidene)-1,2-diiminoethane 、 zinc(II) chloride 以 not given 为溶剂， 以90%的产率得到dichloro(N,N'-bis(p-ethoxybenzylidene)-1,2-diiminoethane)zinc(II)
  参考文献：
  名称：

  Thermally latent reaction of hemiacetal ester with epoxide controlled by Schiff-base–zinc chloride complexes with tunable catalytic activity

  摘要：

  Schiff-base-zinc chloride complexes (ZnCl2/1(R)) thermal-latently catalyze the reaction of glycidyl phenyl ether (2) and I -propoxyethyl-2ethylhexanate (3) that proceeds at appropriate temperatures for latent curing. This reaction proceeds via the nucleophilic addition of carboxylic acid generated from the thermal dissociation of 3 to'2, which takes place faster than the reaction without (ZnCl2/1(R)). Catalytic activities of (ZnCl2/1(R)), depending on the basicities of the a-diimine ligands controllable by the substituents on the aromatic rings, were evaluated by kinetic parameters; namely the reaction rate constants (k), the activation energies (E-a), and the frequency factors (A). (ZnCl2/1(R)) bearing the electron-withdrawing chlorine group initiates the reaction above 80 degrees C, whereas (ZnCl2/1(OMe)), bearing the electron-donating methoxy group initiates the reaction above 100 degrees C. The E-a values in the reactions with (ZnCl2/1(Cl)) and (ZnCl2/1(OMe)), were estimated to be 52.2 and 177 kJ mol(-1), respectively, which agree with the latencies at ambient temperatures. The A values also differ with the catalysts (6.46 x 10(2) and 2.04 x 10(19) L mol(-1) s(-1) for (ZnCl2/1(Cl)) and (ZnCl2/1(OMe)), respectively). The very high A values for the catalysts with electron-donating groups manifest the very good latencies under ambient conditions, in spite of the high activities at elevated temperatures. The coordination behavior of (ZnCl2/1(R)) was evaluated by H-1 NMR, C-13 NMR, N-15 NMR, and lR spectroscopies to understand the substituent effects. (C) 2007 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.molcata.2007.04.016