| 869983-83-5

• CAS: 869983-83-5
• 化学式: C₄₈H₁₀₈Fe₂O₁₆Si₄
• 分子量: 1165.41
• InChiKey: MZVINUYDYCVFHV-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

• 作为产物：
  描述：

  iron(II) bis(trimethylsilyl)amide 、 三(叔丁氧基)硅烷醇 以 正己烷 为溶剂， 以80%的产率得到
  参考文献：
  名称：

  New Fe/SiO materials prepared using diiron molecular precursors: Synthesis, characterization and catalysis

  摘要：

  Several well-defined diiron siloxide complexes have been synthesized, isolated, characterized, and used as molecular precursors for the grafting of well-defined isolated iron species on the surface of mesoporous silica SBA-15. The precursors have bridging siloxide ligands, a diamine linker, or a mu-oxo diiron core, and their binuclear structures have been confirmed by elemental analysis, solution molecular weight measurements, and nuclear magnetic resonance spectroscopy. All precursors react with SBA- 15 to immobilize the iron centers and produce silanol; the various stoichiometries and structural implications of these grafting reactions are discussed. Calcination of the grafted iron complexes yields materials largely devoid of organic components, and these calcined catalysts are active in the oxidation of hydrocarbons by hydrogen peroxide. The catalytic activities and selectivities of these materials are compared with each other and with those of other Fe/SiO2 catalysts. Issues including iron-loading dependence and grafting conditions are discussed. Characterization of the catalysts by diffuse-reflectance ultraviolet-visible, X-band electron paramagnetic resonance, Mossbauer, and extended X-ray absorption fine structure spectroscopies indicates that although the diiron structures of the precursors are usually maintained during the initial grafting process, calcination results in their conversion to monoiron centers on the support. This theory is also consistent with the generally similar catalytic behaviors of materials prepared from diiron and monoiron precursors. The implications of these findings for the generality of molecular precursor techniques are discussed. (c) 2005 Elsevier Inc. All rights reserved.

  DOI：

  10.1016/j.jcat.2005.07.003