Hydrated electron in irradiated highly concentrated solutions of magnesium chloride

Using the method of nanosecond pulse radiolysis the yields (G) and kinetics of hydrated electron (HE) reactions in 0.5-4.8 mol/dm3 aqueous solutions of MgCl2 at the temperatures from 298 to 393 K are investigated. It is shown that under the conditions GHE=2.7±0.3 electron/100 eV. Disappearance of HE at high concentrations of solution takes place in the reaction with Mg (2), energetic validity of which is confirmed by quantum-chemical calculations of electron structure of Mg (2) aguacomplexes. Temperature dependence of the reaction constant rate in solutions of different concentration testifies to the fact that the constant growth with solution concentration increase is mainly determined by the change in entropy factor