Excited State Dynamics of CH3CHOO Criegee Intermediates in the Upper Atmosphere of the Earth

Y. A. Dyakov, S. O. Adamson, P. K. Wang, A. S. Vetchinkin, G. V. Golubkov, V. D. Peskov, A. I. Rodionov, A. G. Syromyatnikov, S. Y. Umanskii, D. V. Shestakov, M. G. Golubkov

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Abstract: Carbonyl oxides, or Criegee intermediates, play an important role in many physicochemical processes occurring in the Earth’s atmosphere. Criegee intermediates are chemically active compounds that easily react with other atmospheric components, promoting the formation of OH and CH3 radicals, toxic compounds of nitrogen, and various acids. Traditionally, the literature considers reactions involving only those carbonyl oxides that are the most stable in the troposphere under the standard atmospheric conditions. In this study, it is shown that in the mesosphere and ionosphere, where the total concentration of molecules is low and the intensity of UV radiation and the number of free electrons are high, reactions involving electronically excited states of the Criegee intermediates CH3CHOO play a significant role. In this case, we should take into account the features of the decomposition of all isomers of the CH3CHOO molecule.

Original languageEnglish
Pages (from-to)543-548
Number of pages6
JournalRussian Journal of Physical Chemistry B
Volume16
Issue number3
DOIs
Publication statusPublished - 2022 Jun

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry

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