catecholato(1-ethyl-2-(phenylazo)imidazole)platinum(II) | 338948-81-5

• 分子结构分类: 有机化合物 - 有机氮化合物
• 英文名称: catecholato(1-ethyl-2-(phenylazo)imidazole)platinum(II)
• CAS: 338948-81-5
• 化学式: C₁₇H₁₆N₄O₂Pt
• 分子量: 503.42
• InChiKey: HGMGUGJNGCKGGY-QDBORUFSSA-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：

  1-ethyl-2-(phenylazo)imidazole 在 (C₂H₅)3N 作用下， 以 甲醇 、 氯仿 、 水 、 乙腈 为溶剂， 生成 catecholato(1-ethyl-2-(phenylazo)imidazole)platinum(II)
  参考文献：
  名称：

  Arylazoimidazoleplatinum(II) complexes and their dioxolene derivatives: single crystal X-ray structure of (catecholato){1-ethyl-2-(p-tolylazo)-imidazole}platinum(II)

  摘要：

  The reaction of 1-ethyl-2-(arylazo)imidazoles (RaaiEt, 1) [R=H (1a), p-Me (1b), p-Cl (1c)] with K2PtCl4 in boiling acetonitrile-water (1:1) produces red-brown Pt(RaaiEt)Cl-2 (2) complexes. Addition of dioxolene in the presence of Et3N to chloroform-methanol solution of Pt(RaaiEt)Cl-2 has yielded green-coloured mixed-ligand complexes [Pt(RaaiEt)(O,O)] [O,O = catecholate (cat) (3), 4-tert-butylcatecholate (tbcat) (4), 3,5-di-tert-butylcatecholate (dtbcat) (5), tetrachlorocatecholate (tccat) (6)]. The structure of [Pt(p-MeaaiEt)(cat)].1/2H(2)O (3b) was confirmed by X-ray diffraction. Electronic spectra exhibit ligand-to-ligand charge transfer transition (LLCT) in the VIS-NIR region; the position and symmetry of the band depend on the substituent type on the dioxolene and arylazoimidazole frames. This is qualitatively assigned as a HOMO(cat)-->LUMO(RaaiEt) transition. Cyclic voltammograms of the complexes show four successive redox responses: two couples at positive to saturated calomel electrode (SCE) correspond to catechol to semiquinone and semiquinone to quinone oxidations, and two couples at negative to SCE correspond to the azo reductions. The difference in the potential E-1/2 of the first oxidation and reduction process changes linearly with the LLCT transition. (C) 2001 Elsevier Science B.V. All rights reserved.

  DOI：

  10.1016/s0020-1693(00)00311-x