Electronic properties of dipole-bound (H 2 O) 2- , (D 2 O) 2- , (H 2 O) 2- Ar n=1,2,3 , and (D 2 O) 2- Ar n=1,2,3 using negative ion photoelectron spectroscopy

G. H. Lee, S. T. Arnold, J. G. Eaton, K. H. Bowen

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Abstract

We present the mass spectral and the photoelectron spectroscopic studies of dipole bound (H2O)2-, (D2O)2-, (H2O)2-Arn=1,2,3, and (D2O)2-Arn=1,2,3. We measured vertical detachment energies (VDEs) of these dipole bound cluster anions and also estimated their adiabatic electron affinities (EAas) to be close to their VDEs, respectively. The photoelectron spectra of (H2O)2-Arn=1,2,3 and (D2O)2-Arn=1,2,3 closely resemble those of (H2O)2- and (D2O)2-, respectively except for a slight successive spectral shift by ~5 meV to a higher electron binding energy with additional argon atoms, which indicates that the argon atoms hardly perturb the water dimer anion geometry.

Original languageEnglish
Pages (from-to)333-337
Number of pages5
JournalChemical Physics Letters
Volume321
Issue number3-4
DOIs
StatePublished - 28 Apr 2000

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