A theoretical study of the potential energy surface for the reaction OH+CO→CO2+H

作者: Mutsumi Aoyagi , Shigeki Kato

DOI: 10.1063/1.454427

关键词:

摘要: The mechanism of the reaction OH+CO→CO2+H is studied theoretically. potential energy surface constructed by using ab initio multiconfiguration (MC) SCF and configuration interaction (CI) calculations. Hamiltonian derived to estimate hydrogen tunneling probability. It found that first step trans addition OH CO trans–cis isomerization subsequent lead elimination from HOCO. rate constant calculated RRKM equation curved Arrhenius temperature dependence, experimentally observed, obtained. We have here effects both HOCO products backreaction reactants are essential obtain this dependence.

参考文章(20)
John J. Lamb, Sidney W. Benson, Negative activation energies and curved Arrhenius plots. 2. Hydroxyl + carbon monoxide The Journal of Physical Chemistry. ,vol. 88, pp. 6435- 6441 ,(1984) , 10.1021/J150669A074
Bruce C. Garrett, Donald G. Truhlar, Criterion of minimum state density in the transition state theory of bimolecular reactions Journal of Chemical Physics. ,vol. 70, pp. 1593- 1598 ,(1979) , 10.1063/1.437698
Robert J. Buenker, Robin A. Phillips, Implementation of the table CI method: Matrix elements between configurations with the same number of open-shells Journal of Molecular Structure-theochem. ,vol. 123, pp. 291- 300 ,(1985) , 10.1016/0166-1280(85)80172-X
George Paraskevopoulos, Robert S. Irwin, The pressure dependence of the rate constant of the reaction of OD radicals with CO Chemical Physics Letters. ,vol. 93, pp. 138- 143 ,(1982) , 10.1016/0009-2614(82)83680-4
Tucker Carrington, William H. Miller, Reaction surface Hamiltonian for the dynamics of reactions in polyatomic systems The Journal of Chemical Physics. ,vol. 81, pp. 3942- 3950 ,(1984) , 10.1063/1.448187
Ian W.M. Smith, The mechanism of the OH + CO reaction and the stability of the HOCO radical Chemical Physics Letters. ,vol. 49, pp. 112- 115 ,(1977) , 10.1016/0009-2614(77)80453-3
G. Radhakrishnan, S. Buelow, C. Wittig, Orienting reactants using van der Waals precursors: OCO ⋅ HBr+hν → {OCO ← H}+Br → CO+OH+Br The Journal of Chemical Physics. ,vol. 84, pp. 727- 738 ,(1986) , 10.1063/1.450569