Rotational alignment in MnO*(A6Σ+) from the reaction Mn + O2

Matthew Spence, Martin Levy

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

The collision energy dependence of chemiluminescence, and its polarization relative to the initial velocity vector k, has been determined for MnO*(A6Σ+) product from the Mn + O2 reaction in the range 0-1500 kJ mol-1. Analysis of the excitation function by the multiple line-of-centers approach indicates that three parallel processes, attributed to a4DJ,z8PJ (perhaps), and a6DJ atoms, contribute. All seem to involve a significant excess barrier and a forward transition state shift with increasing collision energy, suggesting that reaction proceeds via inner ionic-covalent curve crossings at short internuclear distances. The measured alignments are relatively modest, indicating a predominant contribution to MnO rotation from O-O recoil in a nonlinear Mn-O-O configuration.
Original languageEnglish
Pages (from-to)7490-7498
JournalJournal of Physical Chemistry A
Volume101
Issue number41
DOIs
Publication statusPublished - Oct 1997

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