bis{[2-(2-pyridyl)ethyl]iminomethyl-5-chlorophenoxy}manganese(llI) perchlorate | 182075-49-6

• 分子结构分类: 有机化合物 - 苯类化合物 - 三苯基化合物
• 英文名称: bis{[2-(2-pyridyl)ethyl]iminomethyl-5-chlorophenoxy}manganese(llI) perchlorate
• CAS: 182075-49-6
• 化学式: C₂₈H₂₄Cl₂MnN₄O₂*ClO₄
• 分子量: 673.819
• InChiKey: RLQNQPHZXUVWQZ-QUIZRFNZSA-K

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：

  锰 、 2-{N-(2-[2-pyridyl]ethyl)iminomethyl}-4-chlorophenol 在 Et₄NClO₄ 作用下， 以 乙腈 为溶剂， 生成 bis{[2-(2-pyridyl)ethyl]iminomethyl-5-chlorophenoxy}manganese(llI) perchlorate
  参考文献：
  名称：

  电化学合成丙烯醛和2-（2-氨基乙基）吡啶的锰（II）和（III）配合物

  摘要：

  通过在Schiff碱的乙腈溶液（R-salaepH）中对锰阳极进行电化学氧化，制备了三齿NN'O供体组Schiff碱配体的一系列锰（II）和（III）配合物。发现这些络合物为[Mn（R-salaep）2 ]和[Mn（R-salaep）2 ] CIO 4的形式。测定了双{[2-（2-吡啶基）乙基-亚氨基甲基-5-硝基-苯氧基}锰（II）的单晶X射线结构。在以0.2 M Bu 4 NPF 6为支持电解质的二氯甲烷溶液中，锰（II）配合物[Mn（R-salaep）2 l的单电子氧化产生其相关的锰（III）配合物[Mn（R-salaep ）2 ] PF 6。

  DOI：

  10.1016/0277-5387(96)00120-9

文献信息

• Mn(III) and Mn(II) complexes of tridentate Schiff base ligands; synthesis, characterization, structure, electrochemistry and catalytic activity
  作者：Rita N. Egekenze、Yilma Gultneh、Ray Butcher

  DOI：10.1016/j.ica.2018.01.027

  日期：2018.6

  Three Mn(III) complexes [Mn(L-1)(2)] (ClO4)1, [Mn(L-2)(2)] (ClO4)2, [Mn(L-3)(2)] (ClO4)3, and one Mn(II) complex [Mn(L-4)(2)]4 were studied for their efficiency as catalysts for epoxidation of olefins with H2O2 at room temperature and 0 degrees C in the presence of ammonium acetate-acetic acid or triethylamine-perchloric acid system as co-catalyst/buffer. The complexes were obtained from the reaction of Mn(ClO4)(2)center dot 6H(2)0 with NNO tridentate Schiff base ligands HL1-HL4 synthesized from the condensation reaction of 2-(2-aminoethyl) pyridine and 2-hydroxybenzaldehyde (HL1), 5-chloro-2-hydroxybenzaldehyde (HL2), 5-methoxy- 2-hydroxybenzaldehyde (HL3), or 5-nitro-2-hydroxybenzaldehyde (HL4) respectively. The complexes were characterized by spectroscopic techniques as well as by single crystal X-ray diffraction analysis. Electronic effect of the substituents on epoxide yield was also investigated. The crystal structures of complexes confirm coordination of the manganese ion to the ligands through the NNO atoms of the ligands. The spectral changes observed as a function of time for the reaction of the complexes with aqueous (30%) hydrogen peroxide indicates possible formation of an intermediate product; hydroperoxo-complex implicated in the epoxidation reaction. The complexes catalyzed epoxidation of cyclohexene with low yield at room temperature but higher yield at 0 degrees C in the order complex 3 lower than 1, 1 lower than 2, with the Mn(II) complex 4 recording highest epoxide yield of 9% with turnover of 2.25 at room temperature and yield of 58% with turnover of 14.5 at 0 degrees C in the presence of ammonium acetate-acetic acid system/buffer. With the triethylamine-perchloric acid system/buffer, epoxide yield of 46% and turnover of 11.5 was recorded at room temperature while 44% with turnover of 11.0 was obtained at 0 degrees C for complex 4. (C) 2018 Elsevier B.V. All rights reserved.