Resonance Raman spectra and vibronic analysis of the aqueous solvated electron

Resonance Raman spectra of the aqueous solvated electron reveal enhancements of the water inter- and intramolecular vibrations demonstrating that electronic excitation is significantly coupled to these modes, The Raman cross-sections and absorption spectra are quantitatively modeled, yielding an optimized Gaussian homogeneous broadening of 4660 cm(-1) (FWHM), inhomogeneous broadening of 2700 cm(-1), and Franck Condon displacements (Delta) of similar to1 for each of the three librations, 0.4 for the water bend, and 0.2 for the stretch, Frequency downshifts of the resonantly enhanced H2O bend to 1615 cm(-1), and of the stretch to 3100 cm(-1) are best explained by charge donation into solvent frontier orbitals. (C) 2002 Published by Elsevier Science B.V.