Journal
CHEMICAL PHYSICS
Volume 517, Issue -, Pages 228-236Publisher
ELSEVIER
DOI: 10.1016/j.chemphys.2018.09.013
Keywords
Potential energy surface; Dicarbon; C2O
Funding
- National Natural Science Foundation of China [21373099, 21573090, 21673092]
- Jilin Province Science and Technology Development Plan [20150101005JC]
- Ministry of Education of China [20130061110020]
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The higher level ab initio methods are performed to reduce an accuracy of three-dimensional adiabatic potential energies. And the accurate numerically fitted method, 3D-spline method, is used to get an accuracy adiabatic potential energy surfaces for the three lowest states of CCO molecule. Starting from reactants, the title reaction through the first two lowest states have no reaction barrier should be very fast. The title reaction pathways should be different depending on the angles that the oxygen atom O(P-3) attacked the C-2(a(3)Pi(u)) molecule. If the angles less than 60 degrees, the reaction pathway should be O(P-3) + C-2((3)Pi(u)) -> CCO(C-infinity) -> CO(X-1 Sigma) + C(D-1); On the other hand, if the angles great than 65 degrees the transition state should be take into account, the reaction pathway is (OP)-P-3) + C-2((3)Pi(u)) -> CCO(C-2v) -> TS -> CCO(C-infinity) -> CO(X-1 Sigma) + C(D-1).
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