anionic silicon dimer

• 分子结构分类: 无机化合物 - 均相金属化合物 - 均相类金属化合物
• 英文名称: anionic silicon dimer
• 英文别名: lambda1-Silanylsilicon(1-)；λ1-silanylsilicon(1-)
• 化学式: Si₂
• 分子量: 56.171
• InChiKey: ZJQANMVDLHPKNU-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.76
• 重原子数：
  2
• 可旋转键数：
  0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  anionic silicon dimer 、 tungsten(VI) fluoride 以 neat (no solvent) 为溶剂， 生成 silicon cluster 、 W hexafluoride(1-)
  参考文献：
  名称：

  傅立叶变换离子回旋共振质谱研究阴离子和阳离子硅团簇与六氟化钨的反应

  摘要：

  阴离子和阳离子硅团簇与WF 6放热反应，得到各种钨和氟化硅。所有的硅阴离子簇将其电荷转移至WF 6。据估计，Si 2-6的电子亲和力小于WF 6的电子亲和力（350 kJmole（3.6 eV））。

  DOI：

  10.1016/0009-2614(86)80507-3
• 作为产物：
  描述：

  硅烷 以 gaseous matrix 为溶剂， 生成 anionic silicon dimer
  参考文献：
  名称：

  Infrared laser spectroscopy of the A ²Π_u←X ²Σ⁺_g system of the Si⁻₂ anion

  摘要：

  Two bands of the A 2Πu←X 2Σ+g transition of Si−2 lying in the mid-infrared region have been detected using diode laser velocity modulation spectroscopy. The anion was generated in an air cooled low pressure ac discharge through mixtures of silane and hydrogen, and 130 lines of the (1,0) and (2,0) bands lying between 670 and 810 cm−1 and 1200 to 1340 cm−1 respectively were measured and assigned. A fit to standard Hamiltonians for 2Σ and 2Π states yielded the most precise spectroscopic constants so far obtained for the anion. These have been used to derive several equilibrium parameters for the A state. The equilibrium internuclear distance of the A state is re=2.182986(16) Å. The fine structure and equilibrium parameters are compared with earlier low resolution results and with ab initio calculations on Si−2.

  DOI：

  10.1063/1.472214

文献信息

• Reaction of anionic and cationic silicon clusters with tungsten hexafluoride studied by fourier transform ion cyclotron resonance mass spectrometry
  作者：W.D. Reents、M.L. Mandich、V.E. Bondybey

  DOI：10.1016/0009-2614(86)80507-3

  日期：1986.10

  Anionic and cationic silicon clusters react exothermically with WF6 to give a variety of tungsten and silicon fluorides. All the silicon anionic clusters transfer their charge to WF6. The electron affinities of Si2–6 are estimated to be less than the electron affinity of WF6 (350 kJmole (3.6 eV)).

  阴离子和阳离子硅团簇与WF 6放热反应，得到各种钨和氟化硅。所有的硅阴离子簇将其电荷转移至WF 6。据估计，Si 2-6的电子亲和力小于WF 6的电子亲和力（350 kJmole（3.6 eV））。
• Infrared laser spectroscopy of the <i>A</i> ²Π_<i>u</i>←<i>X</i> ²Σ⁺_<i>g</i> system of the Si⁻₂ anion
  作者：Zhuan Liu、Paul B. Davies

  DOI：10.1063/1.472214

  日期：1996.9

  Two bands of the A 2Πu←X 2Σ+g transition of Si−2 lying in the mid-infrared region have been detected using diode laser velocity modulation spectroscopy. The anion was generated in an air cooled low pressure ac discharge through mixtures of silane and hydrogen, and 130 lines of the (1,0) and (2,0) bands lying between 670 and 810 cm−1 and 1200 to 1340 cm−1 respectively were measured and assigned. A fit to standard Hamiltonians for 2Σ and 2Π states yielded the most precise spectroscopic constants so far obtained for the anion. These have been used to derive several equilibrium parameters for the A state. The equilibrium internuclear distance of the A state is re=2.182986(16) Å. The fine structure and equilibrium parameters are compared with earlier low resolution results and with ab initio calculations on Si−2.