[Ni((PyF)Cp)2] | 1257530-88-3

• 英文名称: [Ni((PyF)Cp)2]
• 英文别名: [nickel(II)((tetrafluoro-4-pyridyl)cyclopentadienyl)2]
• CAS: 1257530-88-3
• 化学式: C₂₀H₈F₈N₂Ni
• 分子量: 486.974
• InChiKey: MXULGGUTLKRBJO-UHFFFAOYSA-N

反应信息

• 作为产物：
  描述：

  hexaamminenickel (II) chloride 、 sodium (tetrafluoro-4-pyridyl)cyclopentadienide 以 四氢呋喃 为溶剂， 以37%的产率得到[Ni((PyF)Cp)2]
  参考文献：
  名称：

  Synthesis and characterization of transition metal complexes bearing tetrafluoro-4-pyridyl substituent on the cyclopentadienyl ring

  摘要：

  The reaction of sodium cyclopentadienide (NaCp) with pentafluoropyridine gives Na[4-(C5F4N)C5H4] ((CpNa)-Cp-PyF, 1) contaminated with starting NaCp from which pure 1 could be extracted with Et2O. Hydrolysis of 1 and subsequent crystallization gives pure Diels-Alder dimer 1,4-bis(tetrafluoro-4-pyridyl) tricyclo[5.2.1.0(2,6)]deca-3,8-diene (2). The reactions of 1 with FeCl2, [MnBr(CO)(5)], CoBr2, [Ni(NH3)(6)]Cl-2, [TiCl4(THF)(2)] and [CpTiCl3] cleanly affords the corresponding metallocenes [Fe(Cp-PyF)(2)] (3), [(Cp-PyF)-Mn(CO)(3)] (5), [Co(Cp-PyF)(2)] (6), [Ni(Cp-PyF)(2)] (8), [(Cp-PyF)(2)TiCl2] (9) and [(Cp-PyF)(Cp)TiCl2] (10), respectively. Tetrafluoro-4-pyridyl-substituted ferrocene 3 and [Fe(Cp-PyF)(Cp)] (4) can be alternatively prepared by the reaction of the respective lithioferrocenes with C5F5N in THF. Air-oxidation of complex 6 affords the corresponding cobaltocenium salt [Co(Cp-PyF)(2)]PF6 (7). All prepared compounds were characterized spectroscopically and by elemental analysis. The crystal structures of 3-7 were determined, revealing extensive arene pi center dot center dot center dot pi stacking and C-H center dot center dot center dot F-C contacts. Electrochemical studies supported with the spectroscopic data of the prepared metallocene complexes evidenced strong electron-withdrawing nature of the tetrafluoro-4-pyridyl substituent. (C) 2010 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.ica.2010.06.027