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.
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Iino, T., Ohashi, K., Inoue, K. et al. Coordination and solvation of noble metal ions: Infrared spectroscopy of Ag+(H2O)n . Eur. Phys. J. D 43, 37–40 (2007). https://doi.org/10.1140/epjd/e2007-00070-4
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DOI: https://doi.org/10.1140/epjd/e2007-00070-4