硅烷,Si-28 | 14276-58-5

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 各种混合金属/非金属
• 中文名称: 硅烷,Si-28
• 英文名称: silane, Si-28
• 英文别名: monosilane；silane
• CAS: 14276-58-5
• 化学式: H₄Si
• 分子量: 32.0318
• InChiKey: BLRPTPMANUNPDV-IGMARMGPSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -1.45
• 重原子数：
  1.0
• 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：
  0.0

反应信息

• 作为反应物：
  描述：

  硅烷,Si-28 以 neat (no solvent) 为溶剂， 生成 硅烷
  参考文献：
  名称：

  摘要：

  The effect of isotopic composition on the electron paramagnetic resonance of dangling bonds was studied in single-crystal and polycrystalline silicon. The results demonstrate that the resonance linewidth in monoisotopic Si-28 is smaller than that in Si with the natural isotopic composition because of the smaller contribution of superhyperfine interaction of electrons with the nuclear spins of Si-29. The relaxation contribution to the linewidth is larger in monoisotopic Si-28 because of the changes in the scattering of phonons responsible for the spin relaxation of paramagnetic dangling bonds.

  DOI：

  10.1023/a:1015185217717
• 作为产物：
  描述：

  calcium hydride 、 silicon tetrafluoride, Si-28 以 neat (no solvent) 为溶剂， 以90%的产率得到硅烷,Si-28
  参考文献：
  名称：

  摘要：

  Silicon tetrafluoride was obtained by the thermal decomposition of pure-grade sodium hexafluorosilicate and purified by low-temperature distillation. Next, SiF4 was Si-28-enriched by centrifugation and converted to silane by calcium hydride reduction. To remove hydrocarbons, the silane was distilled.

  DOI：

  10.1023/a:1014735203351

文献信息

• Formation of impurity Si2OH6 in silane synthesized from silicon tetrafluoride
  作者：A. D. Bulanov、P. G. Sennikov、A. Yu. Sozin、A. Yu. Lashkov、O. Yu. Troshin

  DOI：10.1134/s0036023611040061

  日期：2011.4

  The possibility of the reduction of hexafluorodisiloxane by calcium hydride in the synthesis of silane from silicon tetrafluoride has been studied. This reaction is shown to be not decisive for oxygen contamination of silane. The most likely reason for the appearance of impurity Si2OH6 in "fluoride" silane is the Ca(OH)(2)-catalyzed reaction of silane with trace water. The concentration of impurity Si2OH6 in silane at the stage of synthesis may be efficiently decreased by the preliminary purging of calcium hydride with a hydrogen (grade A) flow.
• Fine Purification of Monoisotopic Silanes²⁸SiH₄ ,²⁹SiH₄ , and³⁰SiH₄via Distillation
  作者：A. D. Bulanov、A. N. Moiseev、O. Yu. Troshin、V. V. Balabanov、D. V. Isaev

  DOI：10.1023/b:inma.0000031984.83652.87

  日期：2004.6

  High-purity isotopically enriched (99.98% Si-28, 99.57% Si-29, and 99.83% Si-30) silane samples are prepared for the first time. The total hydrocarbon content of the samples is no higher than 0.1-0.3 ppm. The concentration of electroactive impurities in the silicon prepared from the purified monoisotopic silane is below 10(15) cm(-3).