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Title: Imaging H abstraction dynamics in crossed molecular beams: O(3P) + propanol isomers

Journal Article · · Physical Chemistry Chemical Physics. PCCP
DOI:https://doi.org/10.1039/C8CP06351F· OSTI ID:1595262

The crossed beam reaction dynamics of ground state O(3P) atoms with propanol isomers (1-propanol and 2-propanol) have been studied for the first time using the velocity map imaging technique. The hydroxypropyl radical products, generated from H-abstraction of the secondary and tertiary C–H groups of propanol isomers, were detected via single photon ionization at 157 nm under single collision conditions with collision energies of 8 and 10 kcal mol–1. Direct rebound dynamics were suggested by the angular distributions, which show overall sideways-backward scattering but more pronounced backward scattering for both isomer reactions under all collision energies studied here. All the translational energy distributions peak at low energy, on average 20–40% of the total available energy. This indicates high internal excitation in the products that is treated by various models of energy release. As a result, we infer that most of the total available energy is partitioned into rotational excitation due to the long-rang dipole–dipole interaction between the dipolar OH and hydroxypropyl radicals.

Research Organization:
Univ. of Missouri, Columbia, MO (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences, and Biosciences Division
Grant/Contract Number:
SC0017130
OSTI ID:
1595262
Alternate ID(s):
OSTI ID: 1483014
Journal Information:
Physical Chemistry Chemical Physics. PCCP, Vol. 21, Issue 26; ISSN 1463-9076
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 6 works
Citation information provided by
Web of Science

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