Two-Dimensional Penning Ionization Electron Spectroscopy of Monohalogenobenzenes by He*(23S): C6H5X (X = F, Cl, Br, I)

Kohei Imura*, Naoki Kishimoto, Koichi Ohno

*この研究の対応する著者

研究成果査読

25 被引用数 (Scopus)

抄録

Penning ionization of C6H5X (X = F, Cl, Br, I) upon collision with metastable He*(23S) atoms was studied by two-dimensional (collision-energy/electron-energy-resolved) Penning ionization electron spectroscopy. Partial ionization cross sections are found to be larger for ionization from orbitals having n and π characters. Interaction potentials between the target molecule and the He* atom were found to be highly anisotropic. Attractive interaction was dominated around the collinear access of He*(23S) to C - F axis in C6H5F. On the other hand, attractive interaction was localized around the out-of-plane perpendicular approach of He* atom to C - X bond (X = Cl, Br, I). Attractive interaction for these compounds increases on going from C6H5Cl to C6H5I. Furthermore, the electronic factor due to the size of the halogen p orbitals and the conjugation between the benzene ring and the halogen atoms and also the steric factor due to the shielding effect were found to be important.

本文言語English
ページ(範囲)4189-4199
ページ数11
ジャーナルJournal of Physical Chemistry A
105
17
DOI
出版ステータスPublished - 2001 5 3
外部発表はい

ASJC Scopus subject areas

  • 物理化学および理論化学

フィンガープリント

「Two-Dimensional Penning Ionization Electron Spectroscopy of Monohalogenobenzenes by He*(2<sup>3</sup>S): C<sub>6</sub>H<sub>5</sub>X (X = F, Cl, Br, I)」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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