Unimolecular Reaction Rate Measurement of syn-CH3CHOO

Zhou, Xiaohu1,2,3; Liu, Yiqiang1,4; Dong, Wenrui1; Yang, Xueming1,5

2019-09-05

10.1021/acs.jpclett.9b01740

Journal of Physical Chemistry Letters   影响因子和分区

1948-7185

The unimolecular reactions of Criegee intermediates (CIs) are thought to be one of the significant sources of atmospheric OH radicals. However, stark discrepancies exist in the unimolecular reaction rate of the methyl-substituted CI CH3CHOO, typically from ozonolysis of alkenes such as trans-2-butene, between the results of ozonolysis of alkene experiments and the up-to-date theoretical calculations. That no further progress has been made since the method that directly produces CIs in the laboratory was developed is mostly attributed to the existence of two conformers, syn- and anti-CH3CHOO, and the methodological limitations of sensitive conformer-specific detection. We report a conformer-specific measurement of the unimolecular reaction rate of syn-CH3CHOO by using a high-repetition-rate laser-induced fluorescence method. At 298 K, the observed value of 182 +/- 66 s(-1) is in good agreement with recent theoretical calculations.

SCI ; EI

英语

NI期刊 ; NI论文

通讯

LiaoNing Revitalization Talents Program[XLYC 1807248]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical

WOS:000484884300009

AMER CHEMICAL SOC

20193507376951

Free radicals ; Isomers ; Olefins ; Ozone ; Reaction rates

Chemical Reactions:802.2 ; Chemical Products Generally:804 ; Organic Compounds:804.1

Web of Science

1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
2.Dalian Univ Technol, Sch Environm Sci & Technol, State Key Lab Fine Chem, Dalian 116024, Peoples R China
3.Dalian Univ Technol, Sch Environm Sci & Technol, Key Lab Ind Ecol & Environm Engn, Dalian 116024, Peoples R China
4.Dalian Univ Technol, Sch Phys, Minist Educ, Key Lab Mat Modificat Laser Ion & Electron Beams, Dalian 116024, Peoples R China
5.Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Peoples R China

Zhou, Xiaohu,Liu, Yiqiang,Dong, Wenrui,et al. Unimolecular Reaction Rate Measurement of syn-CH3CHOO[J]. Journal of Physical Chemistry Letters,2019,10(17):4817-4821.

Zhou, Xiaohu,Liu, Yiqiang,Dong, Wenrui,&Yang, Xueming.(2019).Unimolecular Reaction Rate Measurement of syn-CH3CHOO.Journal of Physical Chemistry Letters,10(17),4817-4821.

Zhou, Xiaohu,et al."Unimolecular Reaction Rate Measurement of syn-CH3CHOO".Journal of Physical Chemistry Letters 10.17(2019):4817-4821.