ethynyl ion | 16456-59-0

• 分子结构分类: 有机化合物 - 碳氢化合物 - 不饱和烃
• 英文名称: ethynyl ion
• 英文别名: ethynylium；ethyne
• CAS: 16456-59-0
• 化学式: C₂H
• 分子量: 25.0299
• InChiKey: UAYUAPRVBCKABF-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.4
• 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：
  0

反应信息

• 作为产物：
  描述：

  乙炔 生成 ethynyl ion
  参考文献：
  名称：

  High-resolution pulsed field ionization photoelectron-photoion coincidence study of C2H2: Accurate 0 K dissociation threshold for C2H+

  摘要：

  By employing the newly developed pulsed field ionization photoelectron-photoion coincidence (PFI-PEPICO) apparatus of the Chemical Dynamics Beamline at the Advanced Light Source, we have examined the formation of ethynyl ion (C2H+) from acetylene at high resolution. The PFI-PEPICO (C2H2) time-of-flight spectra reveal that fragmentation of in C2H2 high-n Rydberg states occurs at energies above the dissociation threshold prior to pulsed field ionization. This study shows that for a prompt dissociation process, the disappearance energy of the parent molecule determined in PFI-PEPICO measurements provides an unambiguous measure of the 0 K ion dissociation threshold. For the formation of from this is found C2H+ C2H2 to be 17.3576 +/- 0.0010 eV.

  DOI：

  10.1039/a907383c

文献信息

• Plessis, Pierre; Marmet, Paul, Canadian Journal of Chemistry, 1987, vol. 65, p. 1424 - 1432
  作者：Plessis, Pierre、Marmet, Paul

  DOI：——

  日期：——
• The heat of formation of C₂H⁺
  作者：Y. Ono、C. Y. Ng

  DOI：10.1063/1.441068

  日期：1981.6.15

  The heat of formation of C2H+→C2H++H is considered.(AIP)
• High-resolution pulsed field ionization photoelectron-photoion coincidence study of C2H2: Accurate 0 K dissociation threshold for C2H+
  作者：G. K. Jarvis、Karl-Michael Weitzel、Marcus Malow、Tomas Baer、Y. Song、C. Y. Ng

  DOI：10.1039/a907383c

  日期：——

  By employing the newly developed pulsed field ionization photoelectron-photoion coincidence (PFI-PEPICO) apparatus of the Chemical Dynamics Beamline at the Advanced Light Source, we have examined the formation of ethynyl ion (C2H+) from acetylene at high resolution. The PFI-PEPICO (C2H2) time-of-flight spectra reveal that fragmentation of in C2H2 high-n Rydberg states occurs at energies above the dissociation threshold prior to pulsed field ionization. This study shows that for a prompt dissociation process, the disappearance energy of the parent molecule determined in PFI-PEPICO measurements provides an unambiguous measure of the 0 K ion dissociation threshold. For the formation of from this is found C2H+ C2H2 to be 17.3576 +/- 0.0010 eV.