The data of solubility of tris-acetylacetonats cobalt (III) and chrome (III) in water and water-propanol and water-isopropanol solutions in a wide range of temperature and concentration of alcohol is presented. Statistical processing of the received data is spent. Thermodynamics parameters of process dissolution are calculated. Оn dependences solubility inversion point corresponding to change of the mechanism of gidration  at evolution from structure of water to structure of alcoholic solution is found out on concentration. Position inversion point depends on temperature, content of alcohol and its nature.