Synthesis of some triazole schiff base derivatives and their metal complexes under microwave irradiation and evaluation of their corrosion inhibition and biological activity

Abstract

TWO triazole Schiff base derivatives N-(furan-2-ylmethylene)-1H-1,2,4-triazole-3-amine (FTA), N-(thiophene-2-ylmethylene)-1H-1,2,4-triazole-3-amine (TTA) and their metal complexes Co(II), Ni(II), Cu(II) and Zn(II) were synthesized under microwave irradiation. The structure of these compounds has been investigated by using elemental analysis, FT-IR, UV-Vis spectrometric methods, magnetic susceptibility, mass spectra, NMR, ESR and thermal studies. The antimicrobial activities of the prepared ligands and their respective Zn (II) complexes were studied against the bacterial (positive and negative) grams and fungal strains. The inhibitive characteristics of Schiff base ligands on C-steel corrosion in hydrochloric acid were studied using weight loss measurements. The prepared Schiff base derivatives show high inhibition efficiency and their adsorption surface was found to obey Langmuir model. The data also revealed that FTA is less than TTA in terms of inhibiting efficiency.