Eur. Phys. J. D 43, 41-44 (2007)
https://doi.org/10.1140/epjd/e2007-00071-3

Photoinduced dissociation reactions of silver fluoride cluster ions

Department of Chemistry, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai, 980-8578, Japan

Corresponding author: ^a misaizu@qpcrkk.chem.tohoku.ac.jp

Received: 23 July 2006
Revised: 18 October 2006
Published online: 24 May 2007

Abstract

Photoinduced dissociation in the ultraviolet region has been investigated for Ag_nF _n-1⁺ cluster ions. Photodissociation spectrum of Ag₂F⁺ in the energy of 3.8–5.6 eV exhibits several sharp bands corresponding to the transition to electronically excited states. In this dissociation, only the Ag₂⁺ ion was observed as a fragment ion. Theoretical calculation indicates that the parent Ag₂F⁺ ion has a linear Ag-F-Ag equilibrium geometries in the ground and excited states. Since conformational changes by excitation of bending vibration are necessary for the fragmentation of an F atom, this indicates that production of Ag₂⁺ from Ag₂F⁺ is a result of internal conversion and following conformational changes.