Synthesis, and characterization of Ni(II), Cu(II), Zn(II), Cd(II), and Hg(II) complexes with novel Schiff base ligand derived from 4-Hydroxy-3-(1-((5-phenyl-1,3,4-oxadiazol-2- yl)imino)ethyl)-2H-chromen-2-one. IJFANS. 2022;11(2):1981-1992. Accessed July 18, 2026. https://ijfans.org/index.php/Journal/article/view/5194