**2.5. Materials synthesis**

Interest in synthesizing nanostructured materials has led to the study of families with specific characteristics. Here two families are addressed: (1) the family of tetracyano-niquelates (II) [with three different external metals, that is, (Co+2) cobalt, nickel (Ni+2), and manganese (Mn +2)], which is synthesized in L1, K, and L0 phases for three metals, and (2) the hexacyanocobaltates (III) [with six different external metals, that is, cobalt (Co+2), nickel (Ni+2), manganese (Mn+2), copper (Cu+2), (Zn+2) Zinc, and cadmium (Cd+2)]. X-ray diffraction (XRD) should be used to check the phases and structures of these materials.

Modulated thermogravimetry (MTG) is used for the kinetic analysis of dehydration, and scanning electronic microscopy (SEM) is used to analyze the morphology of the materials during the process of dehydration.
