Photoinduced dissociation reactions of silver fluoride cluster ions |
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Authors: | N Hori A Furuya M Tsuruta F Misaizu K Ohno |
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Institution: | (1) Department of Chemistry, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan |
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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. |
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Keywords: | 36 40 Mr Spectroscopy and geometrical structure of clusters 36 40 Qv Stability and fragmentation of clusters |
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