ARTICLE pubs.acs.org/JPCA
Early Events in the Photochemistry of 1,2,3-Thiadiazole Studied by Ultrafast Time-Resolved UVVis and IR Spectroscopies Gotard Burdzinski,*,† Michel Sliwa,‡ Yunlong Zhang,§ and Stephanie Delbaere^ †
Quantum Electronics Laboratory, Faculty of Physics, Adam Mickiewicz University, 85 Umultowska, Poznan 61-614, Poland Universite Lille Nord de France, CNRS-UMR 8516, Lille1, LASIR, F-59655 Villeneuve d’Ascq, France § Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio, 43210, United States ^ Universite Lille Nord de France, CNRS UMR 8516, UDSL, F-59006 Lille, France ‡
bS Supporting Information ABSTRACT: Photochemistry of 4-methyl-5-carboethoxy-1,2,3-thiadiazole (MCT) in solution was studied at room temperature using UVvis and IR transient absorption spectroscopies (λex = 266 nm). Three deactivation pathways are discussed: thiirene formation, thioketene generation, and the internal conversion by repopulating MCT in the ground state. Ultrafast techniques show a very fast rise (
