Penning ionization of CH3SCN, CH3NCO, and CH3NCS by collision with He* (23S) metastable atoms

T. Pasinszki, Hideo Yamakado, Koichi Ohno

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Penning ionization of CH3SCN, CH3NCO, and CH3NCS upon collision with He* (23S) metastable atoms was studied by collision-energy resolved Penning ionization electron spectroscopy. Collision energy dependence of the partial ionization cross sections indicates that the interaction potentials are strongly anisotropic between He*(23S) and the pseudohalides investigated. In the studied energy range, the interaction potential was found to be repulsive around the methyl and attractive around the pseudohalide group. The ionization cross section of the "lone pair" σ electrons localized on the nitrogen, oxygen, and sulfur atom in CH3SCN, CH3NCO, and CH3NCS, respectively, was found to be very enhanced in the Penning ionization electron spectroscopy.

Original languageEnglish
Pages (from-to)12718-12724
Number of pages7
JournalJournal of Physical Chemistry
Volume97
Issue number49
Publication statusPublished - 1993

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metastable atoms
Ionization
ionization cross sections
ionization
Atoms
collisions
electron spectroscopy
Electron spectroscopy
nitrogen atoms
energy
oxygen atoms
sulfur
interactions
Sulfur
Nitrogen
atoms
Oxygen
electrons
Electrons

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Penning ionization of CH3SCN, CH3NCO, and CH3NCS by collision with He* (23S) metastable atoms. / Pasinszki, T.; Yamakado, Hideo; Ohno, Koichi.

In: Journal of Physical Chemistry, Vol. 97, No. 49, 1993, p. 12718-12724.

Research output: Contribution to journalArticle

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AB - Penning ionization of CH3SCN, CH3NCO, and CH3NCS upon collision with He* (23S) metastable atoms was studied by collision-energy resolved Penning ionization electron spectroscopy. Collision energy dependence of the partial ionization cross sections indicates that the interaction potentials are strongly anisotropic between He*(23S) and the pseudohalides investigated. In the studied energy range, the interaction potential was found to be repulsive around the methyl and attractive around the pseudohalide group. The ionization cross section of the "lone pair" σ electrons localized on the nitrogen, oxygen, and sulfur atom in CH3SCN, CH3NCO, and CH3NCS, respectively, was found to be very enhanced in the Penning ionization electron spectroscopy.

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