Orientation dependence for Br formation in the reaction of oriented OH radical with HBr molecule.
The orientation dependence of Br-atom formation in the reaction of the oriented OH radical with the HBr molecule using the hexapole electrostatic field was studied. Experimental results for the orientation dependence in the reaction were analyzed using a Legendre polynomial fit. The results show two reactive sites. It was found that O-end attack is most favored for this reaction, and that H-end attack also shows a pronounced reactivity. The reactivity of the side-ways attack was found to be small. By comparing the results of the orientation dependence in the reaction with studies of inelastic collisions and theoretical calculations, two reaction pathways are proposed. Reaction by O-end attack is followed by a direct abstraction of the H-atom from the HBr molecule. The mechanism for H-end attack may have H-atom migration from HBr to form the water molecule.
Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan.
Po-Yu
PY
Tsai
Dock-Chil
DC
Che
Masaaki
M
Nakamura
King-Chuen
KC
Lin
Toshio
T
Kasai
D001966:Bromine / Q000737:chemistry*; D018054:Hydrobromic Acid / Q000737:chemistry*; D017665:Hydroxyl Radical / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry; D055672:Static Electricity
D017665:Hydroxyl Radical; D018054:Hydrobromic Acid; D010100:Oxygen; D001966:Bromine