EFFECT OF HOMO LEVELS ON CHEMIIONIZATION OF SUBSTITUTED ETHYLENES BY METASTABLE HELIUM-ATOMS

Authors
YAMAKADO H OKAMURA K OHSHIMO K KISHIMOTO N OHNO K
Citation
H. Yamakado et al., EFFECT OF HOMO LEVELS ON CHEMIIONIZATION OF SUBSTITUTED ETHYLENES BY METASTABLE HELIUM-ATOMS, Chemistry Letters, (3), 1997, pp. 269-270
Citations number
23
Categorie Soggetti
Chemistry
Journal title
Chemistry Letters → ACNP
ISSN journal
03667022
Issue
3
Year of publication
1997
Pages
269 - 270
Database
ISI
SICI code
0366-7022(1997):3<269:EOHLOC>2.0.ZU;2-K
Abstract
Chemiionization reactivity (Penning ionization cross section) of subst ituted ethylenes in collision with helium metastable atoms was studied by velocity-resolved Penning ionization electron spectroscopy. Collis ion energy dependences of ionization probabilities of pi orbitals were found to correlate with the HOMO levels. The higher the HOMO levels, the more effectively the reactive site of the ethylenes is hit by meta stable atoms because of increased attractive interactions.