TY - JOUR
T1 - Collision-energy-resolved Penning ionization electron spectroscopy of toluene and chlorotoluenes
T2 - Stereodynamics in collisional ionization and anisotropic interactions with He*(23S) atoms
AU - Kishimoto, N.
AU - Matsumoto, M.
AU - Matsumura, E.
AU - Ohno, K.
PY - 2006/4
Y1 - 2006/4
N2 - Stereodynamics in ionization of toluene and o-, p-chlorotoluenes by collision with He*(23S) metastable atoms were investigated by two-dimensional collision-energy/electron-energy-resolved Penning ionization electron spectroscopy. Anisotropic interactions around the molecule were studied by the collision energy dependence of partial ionization cross-sections (CEDPICS) as well as model potential calculations, and shielding effect by the methyl group was observed in CEDPICS for ionization from Cl lone-pair orbitals of o- chlorotoluene. Attractive interaction with He*(23S) around the π orbital region was found to be larger for toluene rather than o-, p- chlorotoluenes. Exterior electron density (EED) calculation of partial ionization cross-sections in Penning ionization and negative CEDPICS for ionization band observed in ca. 4 eV in electron energy indicated that π-2π+1 shake-up state was observed in Penning ionization electron spectroscopy of toluene.
AB - Stereodynamics in ionization of toluene and o-, p-chlorotoluenes by collision with He*(23S) metastable atoms were investigated by two-dimensional collision-energy/electron-energy-resolved Penning ionization electron spectroscopy. Anisotropic interactions around the molecule were studied by the collision energy dependence of partial ionization cross-sections (CEDPICS) as well as model potential calculations, and shielding effect by the methyl group was observed in CEDPICS for ionization from Cl lone-pair orbitals of o- chlorotoluene. Attractive interaction with He*(23S) around the π orbital region was found to be larger for toluene rather than o-, p- chlorotoluenes. Exterior electron density (EED) calculation of partial ionization cross-sections in Penning ionization and negative CEDPICS for ionization band observed in ca. 4 eV in electron energy indicated that π-2π+1 shake-up state was observed in Penning ionization electron spectroscopy of toluene.
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U2 - 10.1140/epjd/e2005-00269-3
DO - 10.1140/epjd/e2005-00269-3
M3 - Article
AN - SCOPUS:33644937866
SN - 1434-6060
VL - 38
SP - 75
EP - 84
JO - European Physical Journal D
JF - European Physical Journal D
IS - 1
ER -