| 97411-56-8

• CAS: 97411-56-8
• 化学式: CF₂
• 分子量: 50.0078
• InChiKey: MPOSGMOURCAWQE-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.92
• 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：
  0.0

反应信息

• 作为反应物：
  描述：

  在 氘 作用下， 以 gas 为溶剂， 生成 、 alkaline earth salt of/the/ methylsulfuric acid
  参考文献：
  名称：

  Bond-Forming Reactions of Gas-Phase Molecular Dications

  摘要：

  We observe a series of novel reactions involving the formation of chemical bonds in a comprehensive study of the reactivity of eight dications, CF2+, CF22+, CF32+, SF42+, SF32+, SF22+, CO22+, and OCS2+, with the neutral collision partners Xe, D-2, O-2, N-2, NO, and CO. The reactions are detected in a crossed beam apparatus at laboratory-frame collision energies between 30 and 50 eV. The mass-selected dication beam interacts with a pulsed beam of the neutral reactant in a collision region and the ionic products are monitored by a time-of-flight mass spectrometer. The major reactions for each system are charge transfer processes. However, reactions involving the formation of new chemical bonds contribute significantly to the ion yield (1-20%) for several of the collision systems studied. Two classes of bond-forming reactions are observed, one involving negative ion transfer to the dication and the other involving positive ion transfer from the dication to the neutral reactant. An example of the former is the production of DCF2+ from the reaction between CF22+ and D-2; an example of the latter is the production of XeF+ from the reaction between CF22+ and Xe. Estimates of the appropriate curve-crossing radii for the negative ion transfer reactions give values consistent with a Landau-Zener curve-crossing mechanism. Charge transfer products and collision-induced neutral loss channels are also reported in this study.

  DOI：

  10.1021/ja00098a030
• 作为产物：
  描述：

  trimethyl(2+) 在 Xe 作用下， 以 gas 为溶剂， 生成 fluoromethyliumdiyl 、 二氟卡宾(1+) 、 、 alkaline earth salt of/the/ methylsulfuric acid
  参考文献：
  名称：

  Bond-Forming Reactions of Gas-Phase Molecular Dications

  摘要：

  We observe a series of novel reactions involving the formation of chemical bonds in a comprehensive study of the reactivity of eight dications, CF2+, CF22+, CF32+, SF42+, SF32+, SF22+, CO22+, and OCS2+, with the neutral collision partners Xe, D-2, O-2, N-2, NO, and CO. The reactions are detected in a crossed beam apparatus at laboratory-frame collision energies between 30 and 50 eV. The mass-selected dication beam interacts with a pulsed beam of the neutral reactant in a collision region and the ionic products are monitored by a time-of-flight mass spectrometer. The major reactions for each system are charge transfer processes. However, reactions involving the formation of new chemical bonds contribute significantly to the ion yield (1-20%) for several of the collision systems studied. Two classes of bond-forming reactions are observed, one involving negative ion transfer to the dication and the other involving positive ion transfer from the dication to the neutral reactant. An example of the former is the production of DCF2+ from the reaction between CF22+ and D-2; an example of the latter is the production of XeF+ from the reaction between CF22+ and Xe. Estimates of the appropriate curve-crossing radii for the negative ion transfer reactions give values consistent with a Landau-Zener curve-crossing mechanism. Charge transfer products and collision-induced neutral loss channels are also reported in this study.

  DOI：

  10.1021/ja00098a030

文献信息

• Charge transfer and collision‐induced dissociation reactions of CF²⁺ and CF²⁺₂ with the rare gases at a laboratory collision energy of 49 eV
  作者：Michelle Manning、Stephen D. Price、Stephen R. Leone

  DOI：10.1063/1.465593

  日期：1993.12

  Multiple product channels are observed for the reactions of CF2+ and CF2+2 with the rare gases at a laboratory collision energy of 49±1 eV. A dication beam is produced in an electron impact ion source and mass selected using a quadrupole mass spectrometer. The ion beam is focused into a collision region and a time-of-flight mass spectrometer is used to monitor the reaction products. Reactions of CF2+ produce CF+, C+, and F+ ions and reactions of CF2+2 result in CF+2, CF+, C+, and F+ ion formation accompanied by the corresponding rare gas ions when charge transfer occurs. The relative yields of these products are measured directly. For reactions of both dications, there is a substantial increase in the total reaction cross section as the rare gas collision partner changes from He to Xe. Collision induced dissociation is the primary reaction between CF2+ and He, while charge transfer dominates the reactions involving Ne through Xe. Stable CF+ states are populated during charge transfer between CF2+ and Ar. Dissociative charge transfer to form C+ ions and F atoms is favored for collisions of CF2+ with Ar, Kr, and Xe. Both He and Ne undergo almost exclusively collision induced dissociation reactions with CF2+2. Nondissociative charge transfer to populate stable states of CF+2 is the most important reaction pathway in collisions of Ar with CF2+2, and dissociative charge transfer to form CF+ ions and F atoms is the principal reaction of Kr and Xe with CF2+2. The trends in charge transfer reactivity are successfully modeled using Landau–Zener theory.