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The European Physical Journal D

, Volume 43, Issue 1–3, pp 37–40 | Cite as

Coordination and solvation of noble metal ions: Infrared spectroscopy of Ag+(H2O)n

  • T. Iino
  • K. OhashiEmail author
  • K. Inoue
  • K. Judai
  • N. Nishi
  • H. Sekiya
Structure and Thermodynamics of Free Clusters

Abstract.

Vibrational spectra of mass-selected Ag+(H2O)n ions are measured by infrared photodissociation spectroscopy and analyzed with the aid of density functional theory calculations. Hydrogen bonding between H2O molecules is found to be absent for cold Ag+(H2O)3, but detected for Ag+(H2O)4 through characteristic changes in the position and intensity of OH-stretching transitions. The third H2O coordinates directly to Ag+, but the fourth H2O prefers solvation through hydrogen bonding. The preference of the tri-coordinated form is attributed to the inefficient 5s–4d hybridization in Ag+, in contrast to the efficient 4s–3d hybridization in Cu+. For Ag+(H2O)4, however, di-coordinated isomers are identified in addition to the tri-coordinated one.

PACS.

36.40.Mr Spectroscopy and geometrical structure of clusters 36.20.Ng Vibrational and rotational structure, infrared and Raman spectra 

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Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2007

Authors and Affiliations

  • T. Iino
    • 1
  • K. Ohashi
    • 1
    Email author
  • K. Inoue
    • 1
  • K. Judai
    • 2
  • N. Nishi
    • 2
  • H. Sekiya
    • 1
  1. 1.Department of ChemistryFaculty of Sciences, Kyushu UniversityFukuokaJapan
  2. 2.Institute for Molecular ScienceOkazakiJapan

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