Phase chemistry and thermochemistry on coordination behavior of zinc acetate with methionine

The solubility of ZnAc2–Met–H2O system at 298.15 K in the entire concentration range was investigated by the semimicro-phase equilibrium method. The corresponding phase diagram and refractive index diagram were constructed. The experimental results indicated that the system was a simple one; any new compounds were not obtained. The complex of Zn(Met)Ac2·H2O was prepared by adding acetone into the reaction solution of ZnAc2 and Met with the optimum volume ratio of water:acetone of 1:25. The crystal growth process of the complex at 298.15 K was investigated by microcalorimetry. The experimental results showed the process accorded with the Burton–Cabrera–Frank dislocation theory.