Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 127, Issue 2, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2753484
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The authors report a global potential energy surface for the ground electronic state of HO2(X (2)A(')), which improves upon the XXZLG potential [Xu and , J. Chem. Phys. 122, 244305 (2005)] with additional high-level ab initio points for the long-range interaction potential in the O+OH channel. Exact J=0 quantum mechanical reaction probabilities were calculated on the new potential and the rate constant for the title reaction was obtained using a J-shifting method. The calculated rate constant is in good agreement with available experimental values and our results predict a significantly lower rate at temperature range below 30 K, offering a possible explanation for the interstellar oxygen problem. (C) 2007 American Institute of Physics.
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