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Title: The fate of dicationic states in molecular clusters of benzene and related compounds
Authors: DELEUZE, Michael
FRANCOIS, Jean-Pierre
Issue Date: 2005
Citation: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 127(48). p. 16824-16834
Abstract: Calculations employing density functional theory indicate that, rather than undergoing fragmentation, dicationic clusters of benzene, hexafluorobenzene, and naphthalene produced by sequential one-electron or sudden double-ionization experiments on the neutrals can relax via the formation of inter-ring covalent C-C bonds, along with a series of proton transfers that enable a substantial reduction of inter-and intramolecular Coulomb repulsions. The theoretically predicted chemically bound structures correspond to deep local energy minima on the potential energy surface pertaining to the lowest electronic state of the dications and can therefore be regarded as metastable (kinetically long-lived) species. This discovery invalidates on theoretical grounds the liquid-droplet model of multiply charged clusters and sheds very unexpected light on possible consequences in chemistry of the intermolecular Coulombic decay (ICD) mechanism [Cederbaum, L. S.; et al. Phys. Rev. Lett. 1997, 79, 4778; Jahnke, T.; et al. Phys. Rev. Lett. 2004, 93, 1634011 for deep inner-valence ionized states. Propagation of charge rearrangement reactions and proton transfers to several monomers may eventually lead to the formation of rather extended dicationic assemblies.
Notes: Univ Hasselt, Dept SBG, Theoret Chem Onderzoeksgrp, B-3590 Diepenbeek, Belgium. Univ Liege, Dept Chim, B-4000 Liege, Belgium.Deleuze, MS, Univ Hasselt, Dept SBG, Theoret Chem Onderzoeksgrp, Gebouw D,Agoralaan, B-3590 Diepenbeek, Belgium.michael.deleuze@uhasselt.be eugene.kryachko@ulg.ac.be
URI: http://hdl.handle.net/1942/2167
DOI: 10.1021/ja042238j
ISI #: 000233759200033
ISSN: 0002-7863
Category: A1
Type: Journal Contribution
Validation: ecoom, 2006
Appears in Collections: Research publications

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