Theoretical mechanistic study on the reactions between FO2 + NO and FO + NO2
2009
Abstract The detailed singlet potential energy surface (PES) of the [FNO 3 ] system is investigated at B3LYP/6-311+G(2d) and CCSD(T)/6-311+G(2d) (single-point) levels. Six isomers and nine transition states are located. Various possible isomerization and dissociation channels are probed in order to explore the reaction mechanism for FO 2 + NO. The calculated results indicate that the initial association between FO 2 and NO can lead to the adduct FOONO, followed by the concerted F-shift and cleavage of the ON bond leading to the dominant product FNO + O 2 . The formation of other products, however, is much less feasible due to energy constraints. The three feasible products and reaction pathways are also analyzed for another reaction, FO + NO 2 , on the basis of the [FNO 3 ] PES. This study may be helpful in understanding the reaction and chemical behaviors of oxygen fluorides.
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