Novel metal complexes of mixed piperaquine-acetaminophen and piperaquine-acetylsalicylic acid: Synthesis, characterization and antimicrobial activities

Abstract

Synthesis of coordination compounds of zinc(II), copper(II), nickel(II), cobalt(II), and iron(II) with mixed piperaquine-acetaminophen and piperaquine-acetylsalicylic acid has been studied. The complexes were characterized via the following: solubility test, melting point determination, conductivity measurement, atomic absorption spectroscopy, UV-Visible spectrophotometry, FTIR spectroscopy and magnetic susceptibility. The complexes were proposed to have a stoichiometry ratio of 1:1:1 between each metal salt and the ligands with tetrahedral and octahedral geometry following the reaction pattern of MX.yH2O + L1L2/3 to give ML1L2/3X.yH2O. Biological activities of the synthesized complexes have been evaluated against Escherichia coli and Staphylococcus aureus.