| 190775-03-2

• CAS: 190775-03-2
• 化学式: C₄H₆AuBrN₂S
• 分子量: 391.042
• InChiKey: ULURSIHZUVLDHF-UHFFFAOYSA-M

反应信息

• 作为反应物：
  描述：

  在 二甲基硫 作用下， 以 further solvent(s) 为溶剂， 生成 dicyanoaurate(I)
  参考文献：
  名称：

  二甲基硫醚还原金（III）配合物的动力学和机理

  摘要：

  The reactions between trans-[Au(CN) 2 X 2 ] - (X = Cl or Br) and Me 2 S have been studied by conventional and high-pressure stopped-flow spectrophotometry in acidic aqueous solution containing 10% (w/w) methanol. The overall stoichiometry Au III ∶Me 2 S is 1∶(1.0 ± 0.1) in agreement with the reaction: trans-[Au(CN) 2 X 2 ] - + Me 2 S + H 2 O → [Au(CN) 2 ] - + Me 2 SO + 2H + + 2X - . Initial rapid substitution processes result in the formation of a pre-equilibrium between transient gold(III) complexes, which are reduced to [Au(CN) 2 ] - in a subsequent slower redox process. Complexes trans-[Au(CN) 2 X(Me 2 S)] with an asymmetric electron distribution along the X–Au–S axis are reduced rapidly via an intermolecular process, in which Me 2 S attacks a co-ordinated halide. The complex trans-[Au(CN) 2 (Me 2 S) 2 ] , on the other hand, undergoes slow reduction to gold(I) involving a water molecule. The rapid halide-mediated oxidation of thioethers implies that reduction of metal ions in biological systems by such moieties should be favoured in extracellular environments, where the chloride concentrations are high.

  DOI：

  10.1039/a608001d