The simplest Criegee intermediate CH2OO reaction with dimethylamine and trimethylamine: kinetics and atmospheric implications
We have used the OH laser-induced fluorescence (LIF) method to measure the kinetics of the simplest Criegee intermediate (CHOO) reacting with two abundant amines in the atmosphere: dimethylamine ((CH)NH) and trimethylamine ((CH)N). Our experiments were conducted under pseudo-first-order approximation conditions. The rate coefficients we report are (2.15 ± 0.28) × 10 cm molecule s for (CH)NH at 298 K and 10 Torr, and (1.56 ± 0.23) × 10 cm molecule s for (CH)N at 298 K and 25 Torr with Ar as the bath gas. Both reactions exhibit a negative temperature dependence. The activation energy and pre-exponential factors derived from the Arrhenius equation were (−2.03 ± 0.26) kcal mol and (6.89 ± 0.90) × 10 cm molecule s for (CH)NH, and (−1.60 ± 0.24) kcal mol and (1.06 ± 0.16) × 10 cm molecule s for (CH)N. We propose that the electronegativity of the atom in the co-reactant attached to the C atom of CHOO, in addition to the dissociation energy of the fragile covalent bonds with H atoms (H-X bond), plays an important role in the 1,2-insertion reactions. Under certain circumstances, the title reactions can contribute to the sink of amines and Criegee intermediates and to the formation of secondary organic aerosol (SOA).
National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences[GJJSTD20220001] ; Innovation Program for Quantum Science and Technology[2021ZD0303305]
|WOS Research Area|
Chemistry ; Physics
Chemistry, Physical ; Physics, Atomic, Molecular & Chemical
|WOS Accession No|
|ESI Research Field|
Cited Times [WOS]:0
|Document Type||Journal Article|
|Department||Department of Chemistry|
1.Key Laboratory of Chemical Lasers,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian,116023,China
2.University of Chinese Academy of Sciences,Beijing,100049,China
3.State Key Laboratory of Molecular Reaction Dynamics,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian,116023,China
4.College of Chemical Engineering,Shenyang University of Chemical Technology,Shenyang,110142,China
5.Key Laboratory of Materials Modification by Laser,Ion,and Electron Beams,Chinese Ministry of Education,School of Physics,Dalian University of Technology,Dalian,116024,China
6.Department of Chemical Physics,School of Chemistry and Materials Science,University of Science and Technology of China,Hefei,230026,China
7.Department of Physics,Dalian Maritime University,Dalian,Liaoning,116026,China
8.Department of Chemistry,Southern University of Science and Technology,Shenzhen,518055,China
9.Hefei National Laboratory,Hefei,230088,China
Chen，Yang,Zhong，Licheng,Liu，Siyue,et al. The simplest Criegee intermediate CH2OO reaction with dimethylamine and trimethylamine: kinetics and atmospheric implications[J]. Physical Chemistry Chemical Physics,2023,25(34):23187-23196.
Chen，Yang.,Zhong，Licheng.,Liu，Siyue.,Jiang，Haotian.,Shi，Jiayu.,...&Dong，Wenrui.(2023).The simplest Criegee intermediate CH2OO reaction with dimethylamine and trimethylamine: kinetics and atmospheric implications.Physical Chemistry Chemical Physics,25(34),23187-23196.
Chen，Yang,et al."The simplest Criegee intermediate CH2OO reaction with dimethylamine and trimethylamine: kinetics and atmospheric implications".Physical Chemistry Chemical Physics 25.34(2023):23187-23196.
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