gold(I) bisthiolate | 39343-02-7

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物
• 英文名称: gold(I) bisthiolate
• 英文别名: Au(hydrosulfide)2(1-)
• CAS: 39343-02-7
• 化学式: AuH₂S₂
• 分子量: 263.114
• InChiKey: LCZSCFHBWSYLLU-UHFFFAOYSA-L

计算性质

• 辛醇/水分配系数(LogP)：
  -0.54
• 重原子数：
  3.0
• 可旋转键数：
  0.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  0.0
• 氢给体数：
  0.0
• 氢受体数：
  2.0

反应信息

• 作为产物：
  描述：

  hydrgensulfide(1-) 、 硫化氢 、 金 以 水 为溶剂， 生成 gold(I) bisthiolate
  参考文献：
  名称：

  The kinetics and mechanism of dissolution of gold in solutions of thiocarbamide with an oxidizer

  摘要：

  The kinetics and mechanism of dissolution of gold in solutions of thiocarbamide (T) in the presence of Fe-2(SO4)(3) as an oxidizer were studied. The dependences of the rate of dissolution of gold on the concentration ratio between iron(III) and T and pH were determined, and optimum solution compositions for the dissolution of gold were found. The compositions of gold(I) complexes formed in the boundary double layer ([Au{(NH2)(2)C=S}(2)](+)) and in the bulk ([Au{(NH2)(2)C=S}(3)](+)) were determined. The diffusion and kinetic components of the overall reaction of gold dissolution in solutions of T in the presence of the oxidizer were obtained by the rotating disc method. The first-order rate constants at 278-333 K, k (Au) = 3.5 x 10(-5)-2.73 x 10(-4) s(-1), and the activation energies at 278-295 K (E (a) = 13.4 kJ/mol, which is evidence that dissolution value characteristic of kinetically controlled reactions) were determined for the dissolution of gold in solutions of T. The composition of the adsorption sulfide-containing film on the surface of gold was studied by Auger electron spectroscopy. The film, which inhibited gold dissolution, consisted of gold(I) hydrosulfide (AuHS) and sulfide (Au2S). The solubility products of these compounds and their solubilities in aqueous solutions were calculated.

  DOI：

  10.1134/s003602440609007x