甲烷离子 | 15135-49-6

• 分子结构分类: 无机化合物 - 均质非金属化合物 - 均质其他非金属化合物
• 中文名称: 甲烷离子
• 英文名称: methanium ion
• 英文别名: methanium；Methan-Kation
• CAS: 15135-49-6
• 化学式: CH₅
• 分子量: 17.0507
• InChiKey: PXOFOHGGCICFQD-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.7
• 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：

  甲烷离子 在 盐酸 作用下， 以 gas 为溶剂， 生成 alkaline earth salt of/the/ methylsulfuric acid
  参考文献：
  名称：

  Energy dependencies of fast reactions of positive ions X⁺ with HCl from near thermal to ≂2 eV center‐of‐mass collision energy (X⁺=H⁺,H₂⁺,H₃⁺,N⁺,N₂⁺,Ar⁺,C⁺,CH⁺, CH₂⁺,CH₃⁺,CH₄⁺,CH₅⁺)

  摘要：

  The rate coefficients for the reactions of the ions H+, H2+, H3+, N+, N2+, Ar+, C+, CH+, CH2+, CH3+, CH4+, and CH5+ with HCl have been measured as a function of reactant ion/reactant neutral average center-of-mass kinetic energy (KEc.m.). The measurements were performed using a selected ion flow drift tube operated at 300 K with helium buffer gas. Most of these reactions have rate coefficients close to their collisional values at ambient temperature and all of them exhibit a pronounced KEc.m. dependence. A simple model is proposed, in which the measured dependence of the rate coefficients on KEc.m. is expressed in terms of the kinetic-energy dependence of the rate unimolecular decomposition of the intermediate complex formed in the ion-neutral collision.

  DOI：

  10.1063/1.464742
• 作为产物：
  描述：

  methane 在 H₃(+) 作用下， 生成 甲烷离子
  参考文献：
  名称：

  Determination of proton affinities from the kinetics of proton transfer reactions. VII. The proton affinities of O₂, H₂, Kr, O, N₂, Xe, CO₂, CH₄, N₂O, and CO

  摘要：

  The flowing afterglow and selected ion flow tube techniques are applied in a room temperature study of the kinetics of proton-transfer reactions of the type XH++Y?YH++X for X or Y=He, H2, O2, Kr, O, N2, Xe, CO2, CH4, CD4, N2O, OH, and CO, and for the deuteration of O2 by D3+. Equilibrium constants are determined and changes in thermodynamic state properties (ΔG°, ΔH°, ΔS°) are derived for the reactions with X/Y=H2/O2, O2/Kr, H2/Kr, H2/N2, O/N2, N2/Xe, Xe/CO2, CO2/CH4, CH4/N2O, and N2O/CO. Proton affinities are reported for O2, H2, Kr, O, N2, Xe, CO2, CH4, N2O, and CO, together with the heats of formation of their protonated species. Also a correlation is presented between the kinetic and thermodynamic results obtained in this study.

  DOI：

  10.1063/1.439975
• 作为试剂：
  描述：

  十三烷基苯 在 甲烷离子 作用下， 生成 [3H]甲基鎓
  参考文献：
  名称：

  CH5+、C2H5+ 和 C3H5+ 与 C9–C19 烷基苯在离子阱中的离子-分子反应的质谱研究

  摘要：

  已在离子阱型 GC/MS 的反应物离子选择性模式下研究了 CH5+、C2H5+ 和 C3H5+ 离子对烷基苯 (PhCxH2x + 1 = M: x = 3–13) 的化学电离。短链试剂 (x < 7) 的主要产物离子是 [M + H]+、[PhH + H]+ 和 CxH2x + 1+ 离子，通过质子转移到苯环产生。另一方面，长链试剂 (x ≥ 7) 的主要产物离子是 CyH2y + 1+ (y < x) 和 PhCyH2y+ (y ≤ x) 离子。前一种离子是反应物离子对烷基链和/或苯环的攻击而产生的，而后一种离子则是通过反应物离子对烷基链的攻击而形成的。在观察到的分布和计算的热化学数据的基础上，讨论了每个反应中CyH2y + 1+ 和PhCyH2y+ 离子的主要形成过程。

  DOI：

  10.1246/bcsj.75.241

文献信息

• Mass-Spectrometric Study on Ion-Molecule Reactions of CH₅⁺, C₂H₅⁺, and C₃H₅⁺with C₈—C₁₈<b><i>n</i></b>-Paraffins in an Ion Trap
  作者：Yuki Tanaka、Masaharu Tsuji、Yukio Nishimura

  DOI：10.1246/bcsj.73.2703

  日期：2000.12

  hydroxide-ion abstraction in the C 2 H 5 + reactions, and C z H 2 z OH - -ion (z < x) abstraction in the C 3 H 5 + reactions, while the major reactions for the formation of C y H 2 y - 1 + ions were proton transfer to alkyl chain in the CH 5 + reactions, hydride-ion abstraction in the C 2 H 5 + reactions, and alkanide-ion abstraction in the C 3 H 5 + reactions.

  CH 5 +、C 2 H 5 + 和 C 3 H 5 + 离子对正烷基醇 (nC x H 2 x + 1 -OH = M；x=8-18) 的化学电离已在以下条件下进行了研究离子阱型 GC/MS 的反应物离子选择模式。在所有反应中，观察到 [M - H] + 、烷基 C y H 2 y + 1 + (y = 3-x) 和烯基 C y H 2 y - 1 + (y = 4-x) 离子。根据观察到的初始分布和计算的热化学数据，可以得出结论，形成 C y H 2 y + 1 + 的主要反应是质子转移到 CH 5 + 反应中的羟基、质子转移和/或C 2 H 5 + 反应中的氢氧根离子提取和 C 3 H 5 + 反应中的 C z H 2 z OH - - 离子 (z < x) 提取，而形成 C y H 2 的主要反应y - 1 + 离子在CH 5 + 反应中被质子转移到烷基链，
• Protonated nitric acid. Experimental evidence for the existence of two isomers
  作者：Fulvio Cacace、Marina Attina、Giulia De Petris、Maurizio Speranza

  DOI：10.1021/ja00196a073

  日期：1989.7

  Protonation de HNO 3 par les especes H 3 + , CH 5 + , H 3 O + issues de la spectrometrie de masse par ionisation chimique

  HNO 3 par les esspeces H 3 + , CH 5 + , H 3 O + 质子化问题 de la spectrometrie de masse par ionisation chimique
• Protonated nitric acid. Structure and relative stability of isomeric H2NO3+ ions in the gas phase
  作者：Fulvio Cacace、Marina Attina、Giulia De Petris、Maurizio Speranza

  DOI：10.1021/ja00159a018

  日期：1990.1

  2 NO 3 + ions have been obtained from direct protonation of nitric acid by H 3 + , CH 5 + , and H 3 O + as well as from the protonation of C 2 H 5 ONO 2 followed by C 2 H 4 loss. The proton affinity of nitric acid has been estimated from the results of bracketing experiments carried out by FT-ICR and CI mass spectrometry. Structural analysis by MIKE and CID spectrometry of H 2 NO 3 + ions and of their

  H 3 + 、CH 5 + 和 H 3 O + 直接质子化硝酸以及 C 2 H 5 ONO 2 质子化后失去 C 2 H 4 已获得气态 H 2 NO 3 + 离子. 硝酸的质子亲和力已根据 FT-ICR 和 CI 质谱法进行的括号实验结果估计。通过 MIKE 和 CID 光谱法对 H 2 NO 3 + 离子及其与 H 2 18 O 交换获得的 18 O 标记同位素异构体进行的结构分析为存在两种异构体提供了强有力的证据，其特征在于 (HO) 2 NO +和H 2 O•NO 2 + 结构，后者稳定性更高
• Gas-phase acid-induced nucleophilic displacement reactions. 8. Structural analysis of intermediate ions formed by the decomposition of .beta.-arylethyl onium ions
  作者：Simonetta. Fornarini、Cinzia. Sparapani、Maurizio. Speranza

  DOI：10.1021/ja00209a006

  日期：1988.1
• A beam scattering study of the dynamics of CH⁺₄(CH₄,CH₃)CH⁺₅reaction in the eV collision energy range: Three competing mechanisms of CH⁺₅formation
  作者：Zdenek Herman、Michael Henchman、Bretislav Friedrich

  DOI：10.1063/1.458680

  日期：1990.10

  A crossed-beam study of the reaction CH+4(CH4,CH3)CH+5 was carried out in the collision energy range 0.6–2.3 eV. Three distinct patterns were observed, which may be interpreted in terms of three competing mechanisms for CH+5 formation: proton stripping, H-atom pickup, and intermediate complex decomposition. The existence of a C2H+8 intermediate, stable towards dissociation, is suggested by the results. The relative weights of the three mechanisms were estimated as a function of collision energy.