title: Rich Athermal Ground-State Chemistry Triggered by Dynamics through a Conical Intersection.
abstract: A fundamental tenet of statistical rate theories (such as transition state theory and RRKM) is the rapidity of vibrational relaxation. Excited-state reactions happen quite quickly (sub-picosecond) and thus can exhibit nonstatistical behavior. However, it is often thought that any diversity of photoproducts results from different conical intersections connecting the excited and ground electronic states. It is also conceivable that the large energy of the photon, which is converted to vibrational energy after electronic transitions could lead to athermal hot ground state reactions and that these might be responsible for the diversity of photoproducts. Here we show that this is the case for sulfines, where a single conical intersection is implicated in the electronic transition but the excited state reaction leads to nine different products within less than a picosecond.
authors: Department of Chemistry and the PULSE Institute, Stanford University, Stanford, CA, 94305, USA.|SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA.
authors: Benoit
authors: 0000-0003-3746-6544
authors: B
authors: Mignolet
authors: Department of Chemistry and the PULSE Institute, Stanford University, Stanford, CA, 94305, USA.|SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA.
authors: Basile F E
authors: 0000-0002-1705-473X
authors: BF
authors: Curchod
authors: Department of Chemistry and the PULSE Institute, Stanford University, Stanford, CA, 94305, USA.|SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA.
authors: Todd J
authors: 0000-0002-4798-8947
authors: TJ
authors: Martínez
keywords: ab initio multiple spawning (AIMS); excited-state dynamics; molecular dynamics; oxathiirane; photochemistry