title: Infrared predissociation vibrational spectroscopy of Li⁺(H₂O)(3-4)Ar(0,1) reanalyzed using density functional theory molecular dynamics.
abstract: The experimental IR-PD (infrared predissociation) spectra of Li(+)(H2O)(3-4)Ar and Li(+)(H2O)(3-4) clusters, monitoring two different loss channels and thus different temperatures, have been reanalyzed using DFT-MD (density functional theory based molecular dynamics) simulations for finite temperature and anharmonic theoretical spectroscopy. The use of DFT-MD to calculate IR-PD spectra at low and elevated temperatures was found remarkably accurate and useful in precise structural characterization. The dynamical spectra have in particular provided the opportunity to estimate the clusters temperatures in the IR-PD experiments. The temperatures for Li(+)(H2O)(3-4)Ar are estimated at 50-60 K whereas Li(+)(H2O)3 and Li(+)(H2O)4 have been estimated at around 500-600 and 400 K, respectively.
authors.affiliation: †Laboratoire Analyse et Modélisation pour la Biologie et l'Environnement, LAMBE UMR 8587 CNRS, Université d'Evry Val d'Essonne, 91025 Evry, France.
authors.forename: V
authors.initials: V
authors.lastname: Brites
authors.affiliation: ‡Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.
authors.forename: J M
authors.initials: JM
authors.lastname: Lisy
authors.affiliation: †Laboratoire Analyse et Modélisation pour la Biologie et l'Environnement, LAMBE UMR 8587 CNRS, Université d'Evry Val d'Essonne, 91025 Evry, France.|§Institut Universitaire de France IUF, 103 Blvd St Michel, 75005 Paris, France.
authors.forename: M-P
authors.initials: MP
authors.lastname: Gaigeot