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Proton Migration in Clusters Consisting of Protonated Pyridine Solvated by Water Molecules
- 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.
- Subjects :
- IONS
proton transfer
Pyridines
Dimer
Analytical chemistry
Protonation
GAS-PHASE
Dissociation (chemistry)
Ion
ENERGY
chemistry.chemical_compound
Fragmentation (mass spectrometry)
Pyridine
Molecule
AFFINITIES
Physical and Theoretical Chemistry
EXCHANGE
mass spectrometry
SPECTROSCOPY
DIMER
Chemistry
Water
Atomic and Molecular Physics, and Optics
MULTIPHOTON
[CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry
Crystallography
Solubility
DENSITY
biomolecular clusters
density functional calculations
Mass spectrum
IONIZATION
Protons
protonated pyridine-water clusters
Subjects
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⟩