Mononuclear Fe(III), Cr(III), Co(II) Metal Complexes Based on Azo-Anthraquinone Moieties: Synthesis, Characterizations and Antibacterial Activities

Abstract

The coordination properties of anthraquinone ligands bearing N-heterocyclic coordination sites to divalent cobalt and trivalent iron and chromium metal complexes have been described and characterized as mono and binuclear complexes. Although 4-(2'-amino benzene sulfonic acid)azo-(2''-N-(4''',6'''-dichloro-s-triazine)benzene-5''-(-sulfatoetylsulfonyl)-2-methylanthraquinone was found to form complexes having a ligand to the metal ratio of 2:1 with ferric and cobalt ions, 4-(2'-amino benzene sulfonic acid)azo-(2''-N-(4''',6'''-dichloro s-triazine) naphtaline-5''-sulfonic acid)-2-methyl anthraquinone gave a complex in a molar ratio of about 1:1 with Fe(III). Spectral results showed that the complexes have octahedral geometry. Antibacterial data showed that the complexes have medium antimicrobial activity against Staphylococcus aureus and clinical isolates strains.