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Proton Migration in Clusters Consisting of Protonated Pyridine Solvated by Water Molecules

Authors :
Christophe Morell
Michel Farizon
Henry Chermette
Francis Berthias
Hassan Abdoul-Carime
Valérian Forquet
Bernadette Farizon
Linda Feketeová
Tilmann D. Märk
Institut de Physique Nucléaire de Lyon (IPNL)
Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL)
Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)
Chemometrics and Theoretical Chemistry - Chimiométrie et chimie théorique
Institut des Sciences Analytiques (ISA)
Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL)
Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL)
Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)
Institut für Ionenphysik und Angewandte Physik - Institute for Ion Physics and Applied Physics [Innsbruck]
Leopold Franzens Universität Innsbruck - University of Innsbruck
This work was supported by Agence Nationale de la Recherche (ANR-10-BLAN-0411) and CNRS/IN2P3
ANR-10-BLAN-0411,COLDIRR,IRRADIATION DE NANOSYSTEMES MOLECULAIRES FROIDS(2010)
Source :
ChemPhysChem, ChemPhysChem, Wiley-VCH Verlag, 2015, 16 (15), pp.3151-3155. ⟨10.1002/cphc.201500465⟩
Publication Year :
2015
Publisher :
HAL CCSD, 2015.

Abstract

International audience; Proton transfer (PT) from protonated pyridine to water molecules is observed after excitation of microhydrated protonated pyridine (Py) clusters PyH+(H2O)(n) (n=0-5) is induced by a single collision with an Ar atom at high incident velocity (95x10(3)ms(-1)). Besides the fragmentation channel associated with the evaporation of water molecules, the charged-fragment mass spectrum shows competition between the production of the PyH+ ion (or its corresponding charged fragments) and the production of H+(H2O) or H+(H2O)(2) ions. The increase in the production of protonated water fragments as a function of the number of H2O molecules in the parent cluster ion as well sd the observation of a stable H+(H2O)(2) fragment, even in the case of the dissociation of PyH+(H2O)(2), are evidence of the crucial role of PT in the relaxation process, even for a small number of solvating water molecules.

Details

Language :
English
ISSN :
14394235 and 14397641
Database :
OpenAIRE
Journal :
ChemPhysChem, ChemPhysChem, Wiley-VCH Verlag, 2015, 16 (15), pp.3151-3155. ⟨10.1002/cphc.201500465⟩
Accession number :
edsair.doi.dedup.....4cc8583ca0c8b7d89a9935ff5af69671
Full Text :
https://doi.org/10.1002/cphc.201500465⟩