Solvent effects on the vibrational frequency of I{sub 2}{sup {minus}} in size-selected I{sub 2}{sup {minus}}(Ar){sub n} and I{sub 2}{sup {minus}}(CO{sub 2}){sub n} clusters
- Department of Chemistry, University of California Berkeley, Berkeley, California 94720 (United States)
The vibrational frequency of the I{sub 2}{sup {minus}} chromophore in size-selected I{sub 2}{sup {minus}}(Ar){sub n} and I{sub 2}{sup {minus}}(CO{sub 2}){sub n} clusters has been measured to wave-number accuracy. The frequencies are determined by creating a coherent superposition of vibrational levels with a femtosecond laser pulse via a resonance impulsive stimulated Raman scattering process. The resulting wave-packet oscillations are detected with femtosecond photoelectron spectroscopy. Blueshifting of the frequency occurs upon solvation, with larger shifts observed for solvation with CO{sub 2}. The nature of the shifting is discussed and related to specific cluster geometries. {copyright} {ital 1998 American Institute of Physics.}
- OSTI ID:
- 672737
- Journal Information:
- Journal of Chemical Physics, Vol. 109, Issue 22; Other Information: PBD: Dec 1998
- Country of Publication:
- United States
- Language:
- English
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