4-chlorobenzhydrylium ion | 57298-79-0

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 4-chlorobenzhydrylium ion
• 英文别名: 4-Chlor-benzhydrylkation；1-chloro-4-(phenylmethyl)benzene
• CAS: 57298-79-0
• 化学式: C₁₃H₁₀Cl
• 分子量: 201.675
• InChiKey: KQLZVZGWNZOAAD-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.94
• 重原子数：
  14.0
• 可旋转键数：
  2.0
• 环数：
  2.0
• 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：

  4-chlorobenzhydrylium ion 在 水 作用下， 以 硫酸 、 溶剂黄146 为溶剂， 生成 4-氯二苯甲醇
  参考文献：
  名称：

  Mindl,J., Collection of Czechoslovak Chemical Communications, 1972, vol. 37, p. 585 - 591

  摘要：

  DOI：
• 作为产物：
  描述：

  4-氯二苯甲醇 在 氢气 作用下， 以 硫酸 、 溶剂黄146 为溶剂， 生成 4-chlorobenzhydrylium ion
  参考文献：
  名称：

  Mindl,J., Collection of Czechoslovak Chemical Communications, 1972, vol. 37, p. 585 - 591

  摘要：

  DOI：

文献信息

• Photo-heterolysis and -homolysis of substituted diphenylmethyl halides, acetates, and phenyl ethers in acetonitrile: characterization of diphenylmethyl cations and radicals generated by 248-nm laser flash photolysis
  作者：J. Bartl、S. Steenken、H. Mayr、R. A. McClelland

  DOI：10.1021/ja00175a028

  日期：1990.9

  cations with R = R' = Me to R = H, R' = CF3. The rate constants for reaction of C+ with halides (ion recombination) are -2 X 1O1O M-l s-' (diffusion control). The radicals C' disappear by dimerization and disproportionation, for which a complete mass balance has been achieved by product analysis for the case of the benzhydryl system. At laser-pulse powers > IO mJ electronically excited radicals, C", are

  异裂比均裂吸热小得多。均裂和异裂也可以通过与三线态苯乙酮（由 308 nm 光解产生）的反应间接实现。除非被一种或多种 MeO 稳定，否则阳离子主要通过与乙腈反应生成腈离子而衰变。然而，由于该反应是可逆的（如二苯甲基阳离子所示），腈离子对最终（阳离子衍生）产物的形成贡献很小，这是由与痕量水（主要产物，二苯甲基醇）反应产生的。 ; 次要，二苯甲基乙酰胺）。对于 R = R' = Me 到 R = H，R' = CF3 的阳离子，C+ 加到 CH$N 的速率常数在 3.5 X 105 到 3.8 X IO7 sI 的范围内。C+ 与卤化物（离子复合）反应的速率常数为 -2 X 1O1O Ml s-' （扩散控制）。自由基C'通过二聚和歧化消失，对于二苯甲基体系的情况，通过产物分析已经实现了完全的质量平衡。在激光脉冲功率 > 10 mJ 时，通过基态 C' 吸收光量子，在许多情况下另外形成电子激发自由基
• Photoionization of diarylmethyl radicals in acetonitrile and alcohol-water: laser flash production of diarylcarbenium ions
  作者：Joaquim L. Faria、S. Steenken

  DOI：10.1021/j100111a034

  日期：1993.3

  Diarylmethyl radicals Ar2CH. were produced by 248-nm laser photolysis (20 ns) of diphenylmethane, diphenylmethanol, and diarylmethyl halides in acetonitrile and water:alcohol mixtures. A few microseconds after their generation, the radicals were subjected to a laser pulse (20 ns) of 308-nm light. As products of the photolysis of the radicals, the electronically excited radicals, Ar2CH.* (D] state), and the corresponding cations, Ar2CH+, were identified. The electronically excited radicals decay with emission of light (almost-equal-to 550 nm in the case of Ph2CH.*) to their ground state (D0), whereas the cations react with solvent or (other) nucleophiles. The formation of cation from AT2CH. requires two photons (is biphotonic) and proceeds by photoionization of Ar2CH.*. The photoejected electrons were directly observed in aqueous alcohol. In acetonitrile, the yield of photoionization of Ar2CH. (as measured greater-than-or-equal-to 20 ns after the 308-nm pulse) can be increased by the electron scavenger n-butyl chloride, which does not react with Ar2CH.*. In contrast, CCl4, which does react with Ar2CH.*, does not lead to an increase in cation yield.