Amal El‐HalahValeria Boide-TrujilloMarcela Erder-ConcordiaMarietta VizcayaGerzón E. DelgadoFrancisco López‐Carrasquero2026-03-222026-03-222020http://erevistas.saber.ula.ve/index.php/avancesenquimica/article/download/16610/21921927754https://andeanlibrary.org/handle/123456789/69912In this work, the synthesis in alcoholic solution and characterization of Cu(II), Zn(II), and Sm(III) metal complexes with the itaconic acid are presented. All materials were characterized by the FT-IR and UV spectroscopy, thermogravimetric analysis (TGA), thermal volatilization analysis (TVA), conductimetry, and powder diffraction. FT-IR and UV-visible anal-yses suggest a monodentate coordination for the zinc and copper complexes and thermogravimetric results indicate the presence of two water molecules in the structure with a stoichiometry Zn(C5H4O4)·2H2O and Cu(C5H4O4)·2H2O, respec-tively, where the ligand is the acid carboxylate (C5H4O4). For the samarium complex an ionic structure with a Sm2(C5H4O4)3·4H2O stoichiometry is suggested. The X-ray diffraction study indicates that the Cu and Zn complexes crys-tallize in monoclinic cells with space group P21/c.esThermogravimetric analysisChemistryDenticityCarboxylateStoichiometryZincCopperInfrared spectroscopyInorganic chemistryMonoclinic crystal systemarticle