Abstract :
The enthalpies of solution in water of l-α-histidine and its zinc complexes Zn(His)SO4·H2O, Zn(His)X2·1/2H2O (X=NO3−, OAc−, Cl−) have been measured at 298.15 K. The standard enthalpies of formation of His(aq) and Zn(His)2+(aq) have been calculated. The reliability of the experiment has been discussed.
