Low frequency vibrations (20–400 cm−1) of some mononucleosides in aqueous solution

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Low frequency Raman scattering (20–400 cm−1) of aqueous solutions of uridine, cytidine, guanosine and adenosine are studied by the recently described construction of a quantity R(ν). Bands with intensity maximum at frequencies below 100 cm−1 are assigned to specific protonized forms. An assignment of these bands to nucoleoside modes is preliminarily discussed.