Synthesis, structures, and antimicrobial activities of two cobalt(II) complexes [Co(L1)2(OH2)2] and [Co(L2)2]

Abstract

Abstract). The complexes have been characterized by elemental analyses, IR spectroscopy, and single-crystal X-ray diffraction. The L 1 ligand coordinates to the Co atom through the phenolate O and carbonyl O atoms, while the L 2 ligand coordinates to the Co atom through the phenolate O and imino N atoms. The Co atom in complex 1 adopts octahedral coordination and that in complex 2 adopts tetrahedral coordination. The effect of the free ligands and the cobalt complexes on the antimicrobial activities against Staphylococcus aureus, Escherichia coli, and Candida albicans was studied.

Zinc(ii) complexes of 3-bromo-5-chloro-salicylaldehyde: characterization and biological activity

“…1(A)), a ligand with two different substituents on the benzene ring (3-bromo and 5-chloro). A thorough search in the literature may reveal the existence of a copper( ii ) 14 and two cobalt( ii ) complexes 29,30 with 3-bromo-5-chloro-salicylaldehyde.…”

Palladium(II) Complexes of Substituted Salicylaldehydes: Synthesis, Characterization and Investigation of Their Biological Profile

“…Mixed-ligand Cu(II) complexes of X-saloH and 2,2′-bipyridine or 1,10-phenanthroline as co-ligands presented antiproliferative properties [17], while other Cu(II) complexes may act as artificial nucleases [18]. Furthermore, Co(II) complexes of salicylaldehydes exhibited antimicrobial [19] or anticancer properties [20]. In addition, previous studies conducted by our laboratory showed that metal complexes of substituted salicylaldehydes showed interesting results regarding their affinity to calf-thymus (CT) DNA and their binding to serum albumins (SAs) [21][22][23] as well as their antimicrobial and antioxidant properties [13,14,23].…”