Journal
JOURNAL OF PHYSICAL CHEMISTRY A
Volume 113, Issue 52, Pages 14559-14564Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp9040524
Keywords
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Funding
- Japan Society for the Promotion of Science
- Grants-in-Aid for Scientific Research [20340102] Funding Source: KAKEN
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Outer valence ionic states of Cr(CO)(6) and (eta(5)-C5H5)Co(CO)(2) were investigated by means of Penning ionization electron spectroscopy (PIES) upon Collision with metastable He*(2(3)S) excited atoms as well as high-level ab initio molecular orbital calculations taking electron correlation effects into consideration. By the 2D measurement combining the collision-energy-resolved technique of the metastable atomic beam and electron spectroscopy, ionic-state-resolved measurement of collision energy dependence of partial ionization cross sections (CEDPICS) was carried out. Because partial Penning ionization cross sections can be connected to the spatial extent of corresponding molecular orbitals (MOs) outside the boundary surface of colliding He* atoms, different slopes of CEDPICS were related to anisotropic interaction around the MO region. The observed CEDPICS and PIES band intensity were consistent with the order of calculated ionic states.
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