We report the first infrared spectra of multiply-charged anions in the gas phase. The spectra of SO42-center dot(H2O)(n), with n=3-24, show four main bands assigned to two vibrations of the dianionic core, the water bending mode, and solvent libration. The triply degenerate SO42- antisymmetric stretch vibration probes the local solvent symmetry, while the solvent librational band is sensitive to the hydrogen bonding network. The spectra and accompanying electronic structure calculations indicate a highly symmetric structure for the n=6 cluster and closure of the first solvation shell at n=12. (c) 2006 American Institute of Physics.

Infrared spectroscopy of hydrated sulfate dianions / Zhou, J; Santambrogio, Gabriele; Brummer, M; Moore, Dt; Meijer, G; Neumark, Dm; Asmis, Kr. - In: THE JOURNAL OF CHEMICAL PHYSICS. - ISSN 0021-9606. - 125:11(2006), pp. 111102--4. [10.1063/1.2351675]

Infrared spectroscopy of hydrated sulfate dianions

SANTAMBROGIO, GABRIELE;
2006

Abstract

We report the first infrared spectra of multiply-charged anions in the gas phase. The spectra of SO42-center dot(H2O)(n), with n=3-24, show four main bands assigned to two vibrations of the dianionic core, the water bending mode, and solvent libration. The triply degenerate SO42- antisymmetric stretch vibration probes the local solvent symmetry, while the solvent librational band is sensitive to the hydrogen bonding network. The spectra and accompanying electronic structure calculations indicate a highly symmetric structure for the n=6 cluster and closure of the first solvation shell at n=12. (c) 2006 American Institute of Physics.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11696/29438
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