Collision-energy-resolved penning ionization electron spectroscopy of difluorobenzenes

Anisotropic interaction of difluorobenzenes with He*(23S) and assignments of ionic states

Kohei Imura, Naoki Kishimoto, Koichi Ohno

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Penning ionization of difluorobenzenes upon collision with metastable He*(23S) atoms was studied by two- dimensional (collision-energy/electron-energy-resolved) Penning ionization electron spectroscopy. Collision energy dependence of the partial ionization cross sections (CEDPICS), which reflects interaction potential energy between the molecule and He*(23S), showed anisotropic interaction around the molecules. Assignments of the Penning ionization electron spectra and He I ultraviolet photoelectron spectra were discussed on the basis of different behavior of CEDPICS and calculated ionization potentials by the outer valence Green's function (OVGF) method. Furthermore, the ordering of the reactivity of the n and σCF orbitals and the magnitude of attractive interaction around the F atoms with the metastable atom was found to be o- > m- ∼ p-C6H4F2. It indicates that the wider potential well brings the larger attractive effect for Penning ionization reaction.

Original languageEnglish
Pages (from-to)6073-6083
Number of pages11
JournalJournal of Physical Chemistry A
Volume105
Issue number25
DOIs
Publication statusPublished - 2001 Jun 28
Externally publishedYes

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Electron spectroscopy
Ionization
electron spectroscopy
ionization
collisions
ionization cross sections
interactions
Atoms
metastable atoms
energy
ionization potentials
atoms
molecules
Molecules
photoelectrons
Green's functions
reactivity
Electrons
Ionization potential
potential energy

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

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title = "Collision-energy-resolved penning ionization electron spectroscopy of difluorobenzenes: Anisotropic interaction of difluorobenzenes with He*(23S) and assignments of ionic states",
abstract = "Penning ionization of difluorobenzenes upon collision with metastable He*(23S) atoms was studied by two- dimensional (collision-energy/electron-energy-resolved) Penning ionization electron spectroscopy. Collision energy dependence of the partial ionization cross sections (CEDPICS), which reflects interaction potential energy between the molecule and He*(23S), showed anisotropic interaction around the molecules. Assignments of the Penning ionization electron spectra and He I ultraviolet photoelectron spectra were discussed on the basis of different behavior of CEDPICS and calculated ionization potentials by the outer valence Green's function (OVGF) method. Furthermore, the ordering of the reactivity of the n∥ and σCF orbitals and the magnitude of attractive interaction around the F atoms with the metastable atom was found to be o- > m- ∼ p-C6H4F2. It indicates that the wider potential well brings the larger attractive effect for Penning ionization reaction.",
author = "Kohei Imura and Naoki Kishimoto and Koichi Ohno",
year = "2001",
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issn = "1089-5639",
publisher = "American Chemical Society",
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T1 - Collision-energy-resolved penning ionization electron spectroscopy of difluorobenzenes

T2 - Anisotropic interaction of difluorobenzenes with He*(23S) and assignments of ionic states

AU - Imura, Kohei

AU - Kishimoto, Naoki

AU - Ohno, Koichi

PY - 2001/6/28

Y1 - 2001/6/28

N2 - Penning ionization of difluorobenzenes upon collision with metastable He*(23S) atoms was studied by two- dimensional (collision-energy/electron-energy-resolved) Penning ionization electron spectroscopy. Collision energy dependence of the partial ionization cross sections (CEDPICS), which reflects interaction potential energy between the molecule and He*(23S), showed anisotropic interaction around the molecules. Assignments of the Penning ionization electron spectra and He I ultraviolet photoelectron spectra were discussed on the basis of different behavior of CEDPICS and calculated ionization potentials by the outer valence Green's function (OVGF) method. Furthermore, the ordering of the reactivity of the n∥ and σCF orbitals and the magnitude of attractive interaction around the F atoms with the metastable atom was found to be o- > m- ∼ p-C6H4F2. It indicates that the wider potential well brings the larger attractive effect for Penning ionization reaction.

AB - Penning ionization of difluorobenzenes upon collision with metastable He*(23S) atoms was studied by two- dimensional (collision-energy/electron-energy-resolved) Penning ionization electron spectroscopy. Collision energy dependence of the partial ionization cross sections (CEDPICS), which reflects interaction potential energy between the molecule and He*(23S), showed anisotropic interaction around the molecules. Assignments of the Penning ionization electron spectra and He I ultraviolet photoelectron spectra were discussed on the basis of different behavior of CEDPICS and calculated ionization potentials by the outer valence Green's function (OVGF) method. Furthermore, the ordering of the reactivity of the n∥ and σCF orbitals and the magnitude of attractive interaction around the F atoms with the metastable atom was found to be o- > m- ∼ p-C6H4F2. It indicates that the wider potential well brings the larger attractive effect for Penning ionization reaction.

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