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- W4386202373 abstract "Abstract Criegee intermediates (CIs), R 1 R 2 COO, are active molecules produced in the atmosphere from the ozonolysis of alkenes. Here, we systematically evaluated the reactivity of ten CIs with carbon monoxide and carbon dioxide using CCSD(T)‐F12/cc‐pVTZ‐F12//B3LYP/6‐311+G(2d,2p) energies and transition state theory. Many previous studies focused on alkyl substitution, but here we evaluated both alkyl and vinyl substitution toward the reactivity by studying five anti‐ type CIs: CH 2 OO, anti‐ CH 3 CHOO, anti‐cis‐ C 2 H 5 CHOO, anti‐trans‐ MACRO, anti‐cis‐ MACRO; and five syn‐t ype CIs: syn‐ CH 3 CHOO, (CH 3 ) 2 COO, syn‐trans‐ C 2 H 5 CHOO, syn‐trans‐ MVKO, and syn‐cis‐ MVKO. Our study showed that reactions involving CO 2 have a large substituent dependence varying nearly five orders of magnitude, while those involving CO have a much smaller two orders of magnitude difference. Analysis based on the strain interaction model showed that deformation of the CI is an important feature in determining the reactivity with CO 2 . On the other hand, we used the OO and CO bond ratios to analyze the zwitterionic character of the CIs. We found that vinyl substitution with π‐conjugation results in smaller zwitterionic character and lower reactivity with CO. Lastly, the reactivity of CIs with CO as well as CO 2 were found to be not fast enough to be important in an atmospheric context." @default.
- W4386202373 created "2023-08-28" @default.
- W4386202373 creator A5086087324 @default.
- W4386202373 date "2023-09-01" @default.
- W4386202373 modified "2023-10-16" @default.
- W4386202373 title "Substituent dependence on the reactions of Criegee intermediates with carbon dioxide and carbon monoxide" @default.
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- W4386202373 doi "https://doi.org/10.1002/cplu.202300354" @default.
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