$$\hbox {H}_2$$ -roaming dynamics in the formation of $$\hbox {H}_{3}^{+}$$ following two-photon double ionization of ethanol and aminoethanol
Abstract Roaming reactions involving a neutral fragment of a molecule that transiently wanders around another fragment before forming a new bond are intriguing and peculiar pathways for molecular rearrangement. Such reactions can occur for example upon double ionization of small organic molecules, a...
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Nature Portfolio
2025-01-01
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| Online Access: | https://doi.org/10.1038/s41598-024-84531-9 |
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| author | Aaron Ngai Sebastian Hartweg Jakob D. Asmussen Björn Bastian Matteo Bonanomi Carlo Callegari Miltcho Danailov Michele di Fraia Raimund Feifel Sarang Dev Ganeshamandiram Sivarama Krishnan Aaron LaForge Friedemann Landmesser Ltaief Ben Ltaief Moritz Michelbach Nitish Pal Oksana Plekan Nicolas Rendler Lorenzo Raimondi Fabian Richter Audrey Scognamiglio Tobias Sixt Richard J. Squibb Katrin Dulitz Frank Stienkemeier Marcel Mudrich |
| author_facet | Aaron Ngai Sebastian Hartweg Jakob D. Asmussen Björn Bastian Matteo Bonanomi Carlo Callegari Miltcho Danailov Michele di Fraia Raimund Feifel Sarang Dev Ganeshamandiram Sivarama Krishnan Aaron LaForge Friedemann Landmesser Ltaief Ben Ltaief Moritz Michelbach Nitish Pal Oksana Plekan Nicolas Rendler Lorenzo Raimondi Fabian Richter Audrey Scognamiglio Tobias Sixt Richard J. Squibb Katrin Dulitz Frank Stienkemeier Marcel Mudrich |
| author_sort | Aaron Ngai |
| collection | DOAJ |
| description | Abstract Roaming reactions involving a neutral fragment of a molecule that transiently wanders around another fragment before forming a new bond are intriguing and peculiar pathways for molecular rearrangement. Such reactions can occur for example upon double ionization of small organic molecules, and have recently sparked much scientific interest. We have studied the dynamics of the $$\hbox {H}_2$$ -roaming reaction leading to the formation of $$\hbox {H}_3^+$$ after two-photon double ionization of ethanol and 2-aminoethanol, using an XUV-UV pump-probe scheme. For ethanol, we find dynamics similar to previous studies employing different pump-probe schemes, indicating the independence of the observed dynamics from the method of ionization and the photon energy of the disruptive probe pulse. Surprisingly, we do not observe a kinetic isotope effect in ethanol- $$\hbox {D}_6$$ , in contrast to previous experiments on methanol where such an effect was observed. This distinction indicates fundamental differences in the energetics of the reaction pathways as compared to the methanol molecule. The larger number of possible roaming pathways compared to methanol complicates the analysis considerably. In contrast to previous studies, we additionally analyze a broad range of dissociative ionization products, which feature distinct dynamics from that of $$\hbox {H}_{3}^{+}$$ and allow initial insight into the action of the disruptive UV-probe pulse. |
| format | Article |
| id | doaj-art-7ade4ec3ac014f34a0068ccf19d8ddd7 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
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| series | Scientific Reports |
| spelling | doaj-art-7ade4ec3ac014f34a0068ccf19d8ddd72025-01-26T12:31:43ZengNature PortfolioScientific Reports2045-23222025-01-0115111110.1038/s41598-024-84531-9$$\hbox {H}_2$$ -roaming dynamics in the formation of $$\hbox {H}_{3}^{+}$$ following two-photon double ionization of ethanol and aminoethanolAaron Ngai0Sebastian Hartweg1Jakob D. Asmussen2Björn Bastian3Matteo Bonanomi4Carlo Callegari5Miltcho Danailov6Michele di Fraia7Raimund Feifel8Sarang Dev Ganeshamandiram9Sivarama Krishnan10Aaron LaForge11Friedemann Landmesser12Ltaief Ben Ltaief13Moritz Michelbach14Nitish Pal15Oksana Plekan16Nicolas Rendler17Lorenzo Raimondi18Fabian Richter19Audrey Scognamiglio20Tobias Sixt21Richard J. Squibb22Katrin Dulitz23Frank Stienkemeier24Marcel Mudrich25Institute of Physics, University of FreiburgInstitute of Physics, University of FreiburgDepartment of Physics and Astronomy, Aarhus UniversityWilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie, Universität LeipzigDipartimento di Fisica, PolitecnicoElettra - Sincrotrone Trieste S.C.p.A.Elettra - Sincrotrone Trieste S.C.p.A.Elettra - Sincrotrone Trieste S.C.p.A.Department of Physics, University of GothenburgInstitute of Physics, University of FreiburgDepartment of Physics, Indian Institute of Technology MadrasDepartment of Physics, University of ConnecticutInstitute of Physics, University of FreiburgDepartment of Physics and Astronomy, Aarhus UniversityInstitute of Physics, University of FreiburgElettra - Sincrotrone Trieste S.C.p.A.Elettra - Sincrotrone Trieste S.C.p.A.Institute of Physics, University of FreiburgElettra - Sincrotrone Trieste S.C.p.A.Institute of Physics, University of FreiburgInstitute of Physics, University of FreiburgInstitute of Physics, University of FreiburgDepartment of Physics, University of GothenburgInstitut für Ionenphysik und Angewandte Physik, Universität InnsbruckInstitute of Physics, University of FreiburgDepartment of Physics and Astronomy, Aarhus UniversityAbstract Roaming reactions involving a neutral fragment of a molecule that transiently wanders around another fragment before forming a new bond are intriguing and peculiar pathways for molecular rearrangement. Such reactions can occur for example upon double ionization of small organic molecules, and have recently sparked much scientific interest. We have studied the dynamics of the $$\hbox {H}_2$$ -roaming reaction leading to the formation of $$\hbox {H}_3^+$$ after two-photon double ionization of ethanol and 2-aminoethanol, using an XUV-UV pump-probe scheme. For ethanol, we find dynamics similar to previous studies employing different pump-probe schemes, indicating the independence of the observed dynamics from the method of ionization and the photon energy of the disruptive probe pulse. Surprisingly, we do not observe a kinetic isotope effect in ethanol- $$\hbox {D}_6$$ , in contrast to previous experiments on methanol where such an effect was observed. This distinction indicates fundamental differences in the energetics of the reaction pathways as compared to the methanol molecule. The larger number of possible roaming pathways compared to methanol complicates the analysis considerably. In contrast to previous studies, we additionally analyze a broad range of dissociative ionization products, which feature distinct dynamics from that of $$\hbox {H}_{3}^{+}$$ and allow initial insight into the action of the disruptive UV-probe pulse.https://doi.org/10.1038/s41598-024-84531-9$$\hbox {H}_{{2}}$$ -RoamingXUVtwo-photon double ionizationdisruptive probingUV |
| spellingShingle | Aaron Ngai Sebastian Hartweg Jakob D. Asmussen Björn Bastian Matteo Bonanomi Carlo Callegari Miltcho Danailov Michele di Fraia Raimund Feifel Sarang Dev Ganeshamandiram Sivarama Krishnan Aaron LaForge Friedemann Landmesser Ltaief Ben Ltaief Moritz Michelbach Nitish Pal Oksana Plekan Nicolas Rendler Lorenzo Raimondi Fabian Richter Audrey Scognamiglio Tobias Sixt Richard J. Squibb Katrin Dulitz Frank Stienkemeier Marcel Mudrich $$\hbox {H}_2$$ -roaming dynamics in the formation of $$\hbox {H}_{3}^{+}$$ following two-photon double ionization of ethanol and aminoethanol Scientific Reports $$\hbox {H}_{{2}}$$ -Roaming XUV two-photon double ionization disruptive probing UV |
| title | $$\hbox {H}_2$$ -roaming dynamics in the formation of $$\hbox {H}_{3}^{+}$$ following two-photon double ionization of ethanol and aminoethanol |
| title_full | $$\hbox {H}_2$$ -roaming dynamics in the formation of $$\hbox {H}_{3}^{+}$$ following two-photon double ionization of ethanol and aminoethanol |
| title_fullStr | $$\hbox {H}_2$$ -roaming dynamics in the formation of $$\hbox {H}_{3}^{+}$$ following two-photon double ionization of ethanol and aminoethanol |
| title_full_unstemmed | $$\hbox {H}_2$$ -roaming dynamics in the formation of $$\hbox {H}_{3}^{+}$$ following two-photon double ionization of ethanol and aminoethanol |
| title_short | $$\hbox {H}_2$$ -roaming dynamics in the formation of $$\hbox {H}_{3}^{+}$$ following two-photon double ionization of ethanol and aminoethanol |
| title_sort | hbox h 2 roaming dynamics in the formation of hbox h 3 following two photon double ionization of ethanol and aminoethanol |
| topic | $$\hbox {H}_{{2}}$$ -Roaming XUV two-photon double ionization disruptive probing UV |
| url | https://doi.org/10.1038/s41598-024-84531-9 |
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