Abstract:In this paper, the complexation between glycine and ferrous ions was studied by UV - Vis spectroscopy .The influences of complexation, such as temperature, ionic strength, coordination and pH value were observed. The result shows that: the ionic strength I = 0.02;the complex rate of glycine and ferrous ions (Gly / Fe) is 4:1; pH = 5; formation rate of the complexation was the largest separately, and the temperature will not affect the the formation rate obviously. The complexation between glycine and ferrous ions was second-order reaction, Activation energy was 4.488KJ/mol ,and free energy △G≠ was 2.012KJ/mol. The possible reaction mechanism for the complexation between glycine and Fe(Ⅱ) was proposed. The theoretical basis was provided for the preparation of high purity ferrous glycine.
