{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Kao TY"],"funding":["National Science and Technology Council","Ministry of Education, Taiwan"],"pagination":["9453-9461"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC11533191"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["128(43)"],"pubmed_abstract":["A flow reactor coupled with a light-emitting diode at 286 nm, an infrared quantum-cascade laser near 11 μm, and an ultraviolet laser at 335 nm was implemented to probe the precursor CH<sub>3</sub>CHI<sub>2</sub>, <i>syn</i>-CH<sub>3</sub>CHOO, and <i>anti</i>/<i>syn</i>-CH<sub>3</sub>CHOO, respectively, in the reaction of CH<sub>3</sub>CHI + O<sub>2</sub>. The branching between <i>syn</i>- and <i>anti</i>-CH<sub>3</sub>CHOO was determined to be ≈80:20 from two methods. The concentration temporal profiles of <i>anti</i>-CH<sub>3</sub>CHOO, derived on comparison of infrared and ultraviolet profiles, yielded the rate coefficient for the self-reaction of <i>anti</i>-CH<sub>3</sub>CHOO, <i>k</i><sub>self</sub> <sup>anti</sup> = (6 ± 2) × 10<sup>-10</sup> cm<sup>3</sup> molecule<sup>-1</sup> s<s"],"journal":["The journal of physical chemistry. A"],"pubmed_title":["Rate Coefficient and Branching Ratio for the Formation of Criegee Intermediate S&lt;i&gt;yn&lt;/i&gt;-/A&lt;i&gt;nti&lt;/i&gt;-CH&lt;sub&gt;3&lt;/sub&gt;CHOO from CH&lt;sub&gt;3&lt;/sub&gt;CHI + O&lt;sub&gt;2&lt;/sub&gt; and the Self-Reaction of S&lt;i&gt;yn&lt;/i&gt;-/A&lt;i&gt;nti&lt;/i&gt;-CH&lt;sub&gt;3&lt;/sub&gt;CHOO Determined with Simultaneous IR/UV Probes."],"pmcid":["PMC11533191"],"funding_grant_id":["112-2634-F-009-026","112-2639-M-A49-001-ASP"],"pubmed_authors":["Lee YP","Kao TY","Chung CA"],"additional_accession":[]},"is_claimable":false,"name":"Rate Coefficient and Branching Ratio for the Formation of Criegee Intermediate S&lt;i&gt;yn&lt;/i&gt;-/A&lt;i&gt;nti&lt;/i&gt;-CH&lt;sub&gt;3&lt;/sub&gt;CHOO from CH&lt;sub&gt;3&lt;/sub&gt;CHI + O&lt;sub&gt;2&lt;/sub&gt; and the Self-Reaction of S&lt;i&gt;yn&lt;/i&gt;-/A&lt;i&gt;nti&lt;/i&gt;-CH&lt;sub&gt;3&lt;/sub&gt;CHOO Determined with Simultaneous IR/UV Probes.","description":"A flow reactor coupled with a light-emitting diode at 286 nm, an infrared quantum-cascade laser near 11 μm, and an ultraviolet laser at 335 nm was implemented to probe the precursor CH<sub>3</sub>CHI<sub>2</sub>, <i>syn</i>-CH<sub>3</sub>CHOO, and <i>anti</i>/<i>syn</i>-CH<sub>3</sub>CHOO, respectively, in the reaction of CH<sub>3</sub>CHI + O<sub>2</sub>. The branching between <i>syn</i>- and <i>anti</i>-CH<sub>3</sub>CHOO was determined to be ≈80:20 from two methods. The concentration temporal profiles of <i>anti</i>-CH<sub>3</sub>CHOO, derived on comparison of infrared and ultraviolet profiles, yielded the rate coefficient for the self-reaction of <i>anti</i>-CH<sub>3</sub>CHOO, <i>k</i><sub>self</sub> <sup>anti</sup> = (6 ± 2) × 10<sup>-10</sup> cm<sup>3</sup> molecule<sup>-1</sup> s<s","dates":{"release":"2024-01-01T00:00:00Z","publication":"2024 Oct","modification":"2025-04-26T17:07:17.919Z","creation":"2025-04-06T15:22:40.847Z"},"accession":"S-EPMC11533191","cross_references":{"pubmed":["39427260"],"doi":["10.1021/acs.jpca.4c06588"]}}