Ethynyl-sulfonium | 137236-12-5

• 分子结构分类: 有机化合物 - 有机硫化合物
• 英文名称: Ethynyl-sulfonium
• CAS: 137236-12-5
• 化学式: C₂HS
• 分子量: 57.0959
• InChiKey: CKQXCBNDPNRFFF-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.4
• 重原子数：
  3
• 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：
  32.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为产物：
  描述：

  乙炔 在 硫化氢 作用下， 以 gaseous matrix 为溶剂， 24.9 ℃ 、26.66 Pa 条件下， 生成 Ethynyl-sulfonium 、
  参考文献：
  名称：

  Selected ion flow drift tube studies of the reactions of S+(4S) with CH4, C2H2, C2H4, and C3H8

  摘要：

  The reaction rate coefficients, k, and the product distributions for the reactions of ground-state S+(S-4) with small hydrocarbon molecules CH4, C2H2, C2H4, and C3H8 have been measured as a function of reactant ion/ reactant neutral average center-of-mass kinetic energy, KE(CM), in a selected ion flow drift tube (SIFDT) apparatus. The measurements have been performed at a temperature 298 +/- 2 K with helium as a buffer gas. The values k of the studied reactions have pronounced negative energy dependencies. For some reactions k decreases by about one order of magnitude when KE(CM) is increasing from near thermal values to a few electronvolts. This is interpreted in terms of a simple model assuming the reactions to proceed via the formation of long-lived complexes. The lifetimes of these intermediate complexes against decomposition back to reactants and forward to products (or corresponding unimolecular rate coefficients k(-1) and k(2)) govern the overall rate of the reactions. It is found from the kinetics of the studied reactions that a power law of the form k(-1)/k(2) = const(KE(CM))(m), where m is a constant parameter, can be used to describe the energy dependencies of the overall reaction rate coefficients of studied reactions.

  DOI：

  10.1021/j100043a030

文献信息

• The effects of reactant vibrational, fine structure, and collision energy on the reactions of OCS⁺with C₂H₂: Complementary studies of reactions in the [C₂H₂+OCS]⁺system
  作者：Baorui Yang、Yu‐hui Chiu、Scott L. Anderson

  DOI：10.1063/1.460275

  日期：1991.5.15

  Resonance-enhanced multiphoton ionization has been used to create state-selected OCS+ ions, which are then reacted with C2H2 in a guided-beam tandem mass spectrometer. OCS+ can be produced with excitation in all three of its vibrational modes, in either the upper or lower fine structure electronic state. Absolute cross sections for all product channels (C2H+2, C2HnS+(n=1, 2), and S+) are reported as a function of collision energy and vibrational state in the range from 0.06–4.5 eV. Different modes of nuclear motion have markedly different effects on reactivity and branching ratios. Production of C2H2S+, is the major chemical reaction channel, and its formation is strongly inhibited by collision energy, but only weakly affected by vibrational and fine structure state. The cross section for charge transfer (CT) shows vibrational effects that change with collision energy. For collision energies below 0.3 eV, CT is enhanced by all forms of nuclear motion, while at higher energies CT is weakly enhanced by C–S stretching, strongly enhanced by C–O stretching, and inhibited by bending. Both C2HS+ and S+ are minor channels, which turn on at higher collision energies. They are weakly affected by vibrational energy and fine structure state. These results are compared with those from our complementary study [T. M. Orlando, B. Yang, Y. Chiu, and S. L. Anderson, J. Chem. Phys. 92 7356 (1990)] of the other charge state of the [C2H2+OCS]+ system: reactions of C2H+2 with OCS. This allows comparison of the effects of 12 different reactant internal energy states on the same product channels.
• Selected ion flow drift tube studies of the reactions of S+(4S) with CH4, C2H2, C2H4, and C3H8
  作者：P. Zakouril、J. Glosik、V. Skalsky、W. Lindinger

  DOI：10.1021/j100043a030

  日期：1995.10

  The reaction rate coefficients, k, and the product distributions for the reactions of ground-state S+(S-4) with small hydrocarbon molecules CH4, C2H2, C2H4, and C3H8 have been measured as a function of reactant ion/ reactant neutral average center-of-mass kinetic energy, KE(CM), in a selected ion flow drift tube (SIFDT) apparatus. The measurements have been performed at a temperature 298 +/- 2 K with helium as a buffer gas. The values k of the studied reactions have pronounced negative energy dependencies. For some reactions k decreases by about one order of magnitude when KE(CM) is increasing from near thermal values to a few electronvolts. This is interpreted in terms of a simple model assuming the reactions to proceed via the formation of long-lived complexes. The lifetimes of these intermediate complexes against decomposition back to reactants and forward to products (or corresponding unimolecular rate coefficients k(-1) and k(2)) govern the overall rate of the reactions. It is found from the kinetics of the studied reactions that a power law of the form k(-1)/k(2) = const(KE(CM))(m), where m is a constant parameter, can be used to describe the energy dependencies of the overall reaction rate coefficients of studied reactions.