Abstract: The aim of this review article is to synthesize complex compounds of Cu(II) and Co(II) with 4-aminophenol and determine their formula, complex structure, characteristics, and also investigate their antibacterial activities. These complexes were synthesized by refluxing an alcoholic solution of CuSO4 .5H2 O and CoSO 4 .7H2 O, respectively, with 4-aminophenol in methanol for 1 hour. The products produced are characterized by using UV-Vis spectroscopy, atomic absorption spectroscopy, FTIR, thermal analysis, conductivity, and magnetic moment. The formation of the complexes were identified by shifting of the maximum wavelength toward shorter wavelength, i.e., 817 nm to 421 nm for Cu(II) complex, and 566 nm to 450 nm for Co(II) complex. Further, the proposed formulas for the complexes are [Cu(4-aminophenol)4] SO4 and [Co(4-aminophenol)4 (H2O)2 ]SO4 .5H2O with square planar and octahedral geometry respectively [1]. Both complexes are paramagnetic in nature, with slight antibacterial activity against Staphylococcus aureus, Staphylococcus epidermis, Escherichia coli, and Pseudomonas aeruginosa.

Keywords: Cobalt(II), Copper(II), Methanol, Metal complex, 4-aminophenol.

| DOI: 10.17148/IARJSET.2023.10841