(py)4Cu4Cl4O2 | 104475-18-5

• 英文名称: (py)4Cu4Cl4O2
• CAS: 104475-18-5
• 化学式: C₂₀H₂₀Cl₄Cu₄N₄O₂
• 分子量: 744.4
• InChiKey: DRNSEVGVJCJREG-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  None
• 重原子数：
  None
• 可旋转键数：
  None
• 环数：
  None
• sp3杂化的碳原子比例：
  None
• 拓扑面积：
  None
• 氢给体数：
  None
• 氢受体数：
  None

反应信息

• 作为反应物：
  描述：

  tetrafluoroboric acid 、 (py)4Cu4Cl4O2 以 硝基苯 为溶剂， 生成
  参考文献：
  名称：

  Protonation of tetranuclear oxo(chloro)pyridinecopper(II) complexes by HBF4 in nitrobenzene

  摘要：

  Tetrafluoroboric acid (HBF4) and triethylamine (Et3N) have been added consecutively to solutions of tetranuclear oxocopper(II) complexes (mu-4-O)py3Cu4Cl4O (18), (mu-4-O)py4Cu4Cl4O (Ib), (mu-4-O)py4Cu4Cl6 (IIa), (mu-O)2N4Cu4Cl4 (IIIa) and (mu-4-O)N4Cu4Cl6 (IVa) in nitrobenzene at 25-degrees-C to examine their proton basicities. Here, py is pyridine and N is NN-diethylnicotinamide. The reactions were assigned from spectral and conductivity data. We conclude that the mu-4-oxo groups of IIa and IVa are reversibly monoprotonated by HBF4 and are less basic than Et3N. Further addition of HBF4 apparently removes the central mu-4-oxo group of Ila and IVa as H3O+ and then protonates coordinated py and N. Complexes Ia, Ib and IIIa are irreversibly monoprotonated at their respective oxo groups, which are more basic than Et3N. The protonation sequence for Ia consists of loss of its terminal oxo group Cu(v)-O as H3O+, followed by loss of coordinated py as pyH+. The sequence for Ib is the same except that py coordinated at the v site of lb is protonated in preference to py at sites x. The mu-4-oxo group of Ia and Ib and the OH groups of diprotonated Ma are less basic than their respective ligands py and N. Implications of the results on the mechanisms of copper-catalyzed phenolic oxidative coupling reactions are considered.

  DOI：

  10.1016/s0020-1693(00)83847-5
• 作为产物：
  描述：

  CuCl(pyridine) 在 O₂ 作用下， 以 硝基苯 为溶剂， 生成 (py)4Cu4Cl4O2
  参考文献：
  名称：

  Davies, Geoffrey; El-Sayed, Mohamed A., Inorganic Chemistry, 1983, vol. 22, # 9, p. 1257 - 1266

  摘要：

  DOI：

文献信息

• Effects of transmetalation on the mechanisms of copper-catalyzed phenolic oxidative coupling reactions
  作者：Atieh Abu-Raqabah、Geoffrey Davies、Mohamed A. El-Sayed

  DOI：10.1016/s0020-1693(00)83170-9

  日期：1992.2

  The mechanism of initiation of phenolic oxidative coupling by the tetranuclear copper(I) complex [pyCuCl]4 is affected by transmetalation. [pyCuCl]4 is stoichiometrically transmetalated by equimolar (M(NS)2 reagents (M is Co, Ni, Cu or Zn) at room temperature in nitrobenzene under N2 to give equimolar solutions of air-sensitive complexes py3Cu3M(NS)Cl4 (IIa-d, respectively) and py and 1 mol of insoluble

  四核铜（I）配合物[pyCuCl] 4引发酚类氧化偶联的机理受金属转移作用的影响。[pyCuCl] 4在室温，N2下，在硝基苯中由等摩尔（M（NS）2试剂（M为Co，Ni，Cu或Zn）化学计量转移金属，以生成对空气敏感的复合物py3Cu3M（NS）Cl4（IIa -d）和py和1 mol的不溶性Cu（NS）。与等摩尔Co（NS）3的相应反应得到py3Cu3Co（NS）2Cl4（III）和py和1 mol的Cu（NS）的等摩尔溶液在此，py是吡啶，NS是单阴离子S-甲基异亚丙基肼二碳二硫代硫酸盐，用[pyCuCl] 4还原O2，得到四核氧铜（II）配合物（μ-4-O）py4Cu4Cl4O（Ib）在等摩尔py的存在下通过IIc还原O2，得到Ib和二硫化物副产物N2S2。IIa，IIb，IId和III对O2的相应还原作用得到了py3CuMCl4O2（分别为IVa，IVb，IVd和IVa）和N2S
• El-Sayed, Mohamed A.; Abu-Raqabah, Atieh; Davies, Geoffrey, Inorganic Chemistry, 1989, vol. 28, # 10, p. 1909 - 1914
  作者：El-Sayed, Mohamed A.、Abu-Raqabah, Atieh、Davies, Geoffrey、El-Toukhy, Ahmed

  DOI：——

  日期：——