Abstract
In this work, we have used steady-state and ultrafast vibrational spectroscopy to measure the absorption band centers and widths, as well as vibrational energy relaxation (VER) lifetimes for the antisymmetric ν3 stretching band of the nitrite (NO2–) anion in H2O, D2O, and DMSO. The nitrite IR absorption bands are very broad and the excited state has an extremely short VER lifetime in all three solvents, suggesting that NO2– interacts quite strongly with all of them. We also measured and analyzed reflection spectra for NaNO2 pressed pellets and determined that the damping is fast in the reststrahlen band.
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