Therefore, in this work, the effect of the addition of Co(NO3)2·6H2O on the chemical shifts of NMR spectral lines on 1H, 13C, and 14N nuclei in a mixture with BmimNO3 in the range of cobalt salt concentrations of 0 – 0.08 mol/l (0.02 mol/l apart) and on diffusion coefficients of ions (on 1H nuclei) in the range temperatures of 25 – 75C (10C apart).