Effect of lithium halides on the characteristic vibration frequencies of 1 propanol

In the present work, emphasis is given to ν(O-H), δ(O-H) and ν(C-O) vibrations of 1-propanol and the effects of lithium chloride and bromide on frequencies of these vibrations. It has been found, in general, that solutions in lower concentration ranges departed to a greater extent from respective frequencies for pure 1-propanol, because of the fact that at lower concentration, there are large interactions between dipoles and the counter ions which result in decrease in energy of vibration. So, a fall in wavenumbers is of common occurrence with increasing salt concentration and lends to become constant at or near the saturation limit.