{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Long B"],"funding":["U.S. Department of Energy","U.S. Department of Energy (DOE)"],"pagination":["2003"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC6494847"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["10(1)"],"pubmed_abstract":["Elucidating atmospheric oxidation mechanisms is necessary for estimating the lifetimes of atmospheric species and understanding secondary organic aerosol formation and atmospheric oxidation capacity. We report an unexpectedly fast mechanistic pathway for the unimolecular reactions of large stabilized Criegee intermediates, which involves the formation of bicyclic structures from large Criegee intermediates containing an aldehyde group. The barrier heights of the mechanistic pathways are unexpectedly low - about 2-3 kcal/mol - and are at least 10 kcal/mol lower than those of hydrogen shift processes in large syn Criegee intermediates; and the calculated rate constants show that the mechanistic pathways are 10<sup>5</sup>-10<sup>9</sup> times faster than those of the corresponding hydrogen s"],"journal":["Nature communications"],"pubmed_title":["Rapid unimolecular reaction of stabilized Criegee intermediates and implications for atmospheric chemistry."],"pmcid":["PMC6494847"],"funding_grant_id":["DE-SC0015997"],"pubmed_authors":["Bao JL","Truhlar DG","Long B"],"additional_accession":[]},"is_claimable":false,"name":"Rapid unimolecular reaction of stabilized Criegee intermediates and implications for atmospheric chemistry.","description":"Elucidating atmospheric oxidation mechanisms is necessary for estimating the lifetimes of atmospheric species and understanding secondary organic aerosol formation and atmospheric oxidation capacity. We report an unexpectedly fast mechanistic pathway for the unimolecular reactions of large stabilized Criegee intermediates, which involves the formation of bicyclic structures from large Criegee intermediates containing an aldehyde group. The barrier heights of the mechanistic pathways are unexpectedly low - about 2-3 kcal/mol - and are at least 10 kcal/mol lower than those of hydrogen shift processes in large syn Criegee intermediates; and the calculated rate constants show that the mechanistic pathways are 10<sup>5</sup>-10<sup>9</sup> times faster than those of the corresponding hydrogen s","dates":{"release":"2019-01-01T00:00:00Z","publication":"2019 May","modification":"2025-04-22T00:05:18.423Z","creation":"2019-06-06T23:10:22Z"},"accession":"S-EPMC6494847","cross_references":{"pubmed":["31043594"],"doi":["10.1038/s41467-019-09948-7"]}}