Chemical Preparation, Spectro-Magnetic and Biocidal Studies on Some Divalent Transition Metal Complexes of Schiff’s Base Derived from 1-Phenyl-2-(Pyridin-2-yl)ethane-1,2-dione and Ethylenediamine

Abstract

The tetra-dentate Schiff's base ligand, N, N-di(pyridin-2-ylbenzenoylmethylene)ethylenediamine and its complexes of divalent transition metals like Ni(II), Co(II), Cu(II) and Zn(II) were investigated in terms of synthesis, elemental analysis, molar conductivity, infrared spectra, ultraviolet-visible(electronic spectra) and magnetic susceptibility measurements. The ligands have been synthesized by condensation of 1-phenyl-2-(pyridin-2-yl) ethane-1, 2-dione and ethylenediamine. Each divalent transition metal complexes possess eight coordinate octahedral geometrical structures. Bactericidal and fungicidal activities of the compounds were evaluated in vitro by disc diffusion method. Antimicrobial studies conducted on two bacteria and two fungi revealed higher antimicrobial activities by complexes than the Schiff base ligand against all the microbes used.

Antimicrobial, Antioxidant and DNA Interaction Studies of Water-soluble Complexes of Schiff Base Bearing Morpholine Moiety

“…The metal Schiff base complexes can serve as efficient models for the metal containing sites in metallo-proteins and enzymes due to the varied magnetic and catalytic properties and also they have been studied for their dioxygen up take and oxidative catalysis because of they are an excellent catalyst for the insertion of oxygen into an organic substrate [11] . Magnetic properties of Cu(II) and Ni(II) complexes bridged by the azo-2,2'-bispyridine ligand has been considered with special attention due to the ability of this ligand to mediate exchange interactions between paramagnetic metal centers [12] . The present study aimed to investigate the reaction of tridentate Schiff base ligand (HL) derived from the condensation of 4-(2-aminoethyl)-morpholine with salicylaldehyde.…”

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“…Many ketone and ß-diketones are condensed with amine and diamines for forming a Schiff's base and their complexes [16]. The present study aimed to investigate the reaction of Schiff's bases have been widely used as ligands because they form highly stable coordination compounds and have good solubility in common solvents [6,17]. These Schiff's base metal derivatives have considerable interest due to coordinated metal ions acting as bidentate or tetradentate ligands in biological systems, contributing to the knowledge of their structure and behavior in various activities [18].…”

Crystal Structure, Spectral Characterization and Biologically Studies of Mononuclear Transition Metal Complexes Derived from New N2O2 Type Ligand

“…They have attracted much interest in recent years, due to ease of synthesis, their stability under a variety of oxidative and reductive conditions and their structural versatility associated with various applications. These compounds have various applications in industries as dyes, drug synthesis [3] bioinorganic chemistry [4] electrochemistry [5] dioxygen uptake and catalysis [6][7][8][9][10]. Tetra-dentate N 2 O 2 donors schiff bases derived from o-phenylenediamine and salicyaldehyde have been widely studied in solid state.…”