Dynamics of ion solvation in binary solvent acrylonitrile/dimethyl sulfoxide
Rabadanov K.Sh 1,2, Akhmedov M. A.1,2, Magomedova A. G.1
1Dagestan State University, Makhachkala, Dagestan Republic, Russia
2Dagestan Federal Research Center, Russian Academy of Sciences, Makhachkala, Russia
Email: rksh83@mail.ru, DagestanFederalResearchCenterofRASMakhachkalaRussia

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Raman spectra of solutions of lithium and sodium trifluoromethanesulfonates in the binary solvent acrylonitrile (AN)-dimethylsulfoxide have been considered. It was found that in the Li+(AN)x and Na+(AN)x solvatocomplexes the modulation times of the CN bond vibrations of acrylonitrile molecules (tauω ) are much larger than those for unbound acrylonitrile. Such a ratio between tauω for bound and free molecules can be considered as a dynamic criterion for ion solvation in acrylonitrile solutions. Keywords: Solvation, mixed solvent, vibrational dephasing.
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