1,8-naphthalene dicopper(II) (μ-Br) bis (2,2'-bipyridine) perchlorate | 345223-99-6

• 英文名称: 1,8-naphthalene dicopper(II) (μ-Br) bis (2,2'-bipyridine) perchlorate
• CAS: 345223-99-6
• 化学式: C₃₂H₂₂BrCu₂N₄O₄*ClO₄
• 分子量: 832.998
• InChiKey: AOHFRONTQUBXQN-UHFFFAOYSA-J

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：

  2,2'-联吡啶 、 copper(II) perchlorate hexahydrate 、 1,8-萘二甲酸 、 sodium bromide 在 triethylamine 、 dioxygen 作用下， 以 甲醇 为溶剂， 生成 1,8-naphthalene dicopper(II) (μ-Br) bis (2,2'-bipyridine) perchlorate
  参考文献：
  名称：

  Dinuclear complexes [NAPH (CuII)2 (μ-X) (bipy)2]ClO4: synthesis, characterization and Tyr-like activity

  摘要：

  Four mu -X-bridged dicopper(II) complexes have been synthesized, namely [NAPH Cu-2 (mu -X) (bipy)(2)]ClO4 (X = OH (1), OAc (2), Cl (3) and Br (4); NAPH denotes 1,8-naphthalate dianion). NAPH was found to have the ability to form dinuclear complexes with X as an additional ligand. Based on the elemental analysis, infrared and electronic spectra, these complexes were found to have heterocyclic structure with both DPHA and mu -X as bridging ligands. The temperature dependence of magnetic susceptibilities of complexes 1 and 4 have been studied, giving the exchange integral of J = -189.7 and -187.9 cm(-1), respectively. This result is in agreement with proposed mu -X-bridged structure. In methanolic solution and excess dioxygen, these complexes were found to be effective catalysts for catechol oxidizing to benzoquinone. The rate constant for these complexes is in the order of 1 > 2-3 > 4. The oxidation is first order in Cu-2 complex and zero in substrate. In the same conditions and in the presence of sodium ethoxide, the rates of catalytic reactions for these complexes were found to be 2-4 times greater than for the formal oxidation. On the basis of these observations, a catalytic scheme based on the dicopper(II) complex as the initial active species is proposed. (C) 2001 Elsevier Science B.V. All rights reserved.

  DOI：

  10.1016/s1381-1169(00)00536-7