Анотація:
It is shown that, in the low-frequency Raman spectra of Cs-DNA, the mode of ion-phosphate
vibrations exists. Together with the modes of H-bond stretching in base pairs, it forms the band
near 100 cm−1
with intensity about twice as much than that in the spectra of Na-DNA. The
mode of Na-DNA ion-phosphate vibrations is much lower in intensity and is located within a
broad band near 180 cm−1.