Nuclear Magnetic Resonance Studies of Iodine Ions in Aqueous Solution

Chemical shift and line width were measured for the nuclear magnetic resonance of iodine nuclei in aqueous solutions of alkali iodides. The chemical shift was independent of temperature, but was dependent on the concentration of the solution. The spin lattice relaxation time calculated from the line width varied with temperature as well as concentration. General trend of the variation of the spin lattice relaxation time agrees with that of viscosity. By analysing the data of the chemical shift and spin lattice relaxation time, it is suggested that even in very dilute solution there exists chemical shift of the order of 6×10 -4 as compared to the case of `pure ion'.