DETERMINATION OF ION ASSOCIATION CONSTANTS BY MEANS OF IR ABSORPTION-BAND INTENSITIES OF THE MOLECULES FORMING THE 1ST COORDINATION SPHERES OF THE CATIONS

The IR spectra of the binary systems CH3CN-LiI, CH3CN-LiClO4 and CH3CN-LiNCS in the regions of the stretching vibrations of C-C and C=N bonds of acetonitrile have been recorded. The association constants have been determined on the basis of the analysis of the IR absorption band intensities of acetonitrile molecules. The values of the absorption coefficients of the molecules forming the first coordination spheres of Li+ cations have been estimated.