Resonance Raman spectrum of [Ru(bipyridine)(3)](2+) in water, acetonitrileand their deuterated derivatives: the possible role of solvent in excited-state charge localization
Ma. Webb et al., Resonance Raman spectrum of [Ru(bipyridine)(3)](2+) in water, acetonitrileand their deuterated derivatives: the possible role of solvent in excited-state charge localization, J RAMAN SP, 32(6-7), 2001, pp. 481-485
Resonance Raman spectra excited at 458 and 476 nm are reported for [Ru(bipy
ridine)(3)](2+) in water, acetonitrile and their perdeuterated derivatives.
Raman intensities of [Ru(bipyridine)(3)](2+) are about a factor of two gre
ater in H2O than D2O for all vibrational modes, but are independent of solv
ent isotopomer in acetonitrile. Solvent dynamics apparently contribute more
strongly to the dephasing dynamics in water than in acetonitrile. Mode-spe
cific dephasing rates seem to cause different depolarization ratios for dif
ferent observed vibrations which can lead to a potentially misleading inter
pretation of the depolarization ratios. We speculate that a static complex
between [Ru(bipyridine)(3)](2+) and water influences the excited-state dyna
mics. Copyright (C) 2001 John Wiley & Sons, Ltd.