A modern technique for preparation of zinc(II) and nickel(II) nanometric oxides using Schiff base compounds: synthesis, characterization, and antibacterial properties

Megahed, Adel S.; Al-Amoudi, Muhammed S.; Refat, Moamen S.

doi:10.1007/s11164-013-1049-8

Cited by 7 publications

(4 citation statements)

References 19 publications

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“…For example, thiophene‐2‐carboxaldehyde phenylhydrazone afforded complexes with proposed structures 249 (Figure 30), which were more potent antimicrobial agents than the ligand, but whose antibacterial activity was weak to moderate compared to that of tetracycline, according to a disc diffusion assay. [ 227 ] Generally, complex 249 (M = Zn, X = NO 3 ) was more potent than complex 249 (M = Ni, X = Cl) against all microorganisms included in this study, with the exception of E. coli . Both complexes 249 were more potent than amphotericin against A. flavus , but only the zinc complex was equipotent to amphotericin against C. albicans .…”

Section: Antimicrobial Activity Of Metal Complexes Based On Thiophene...mentioning

confidence: 89%

Thiophene‐containing compounds with antimicrobial activity

Roman¹

2022

Archiv der Pharmazie

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Thiophene, as a member of the group of five-membered heterocycles containing one heteroatom, is one of the simplest heterocyclic systems. Many synthetic strategies allow the accurate positioning of various functionalities onto the thiophene ring. This review provides a comprehensive, systematic and detailed account of the developments in the field of antimicrobial compounds featuring at least one thiophene ring in their structure, over the last decade.

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Section: Antimicrobial Activity Of Metal Complexes Based On Thiophene...mentioning

confidence: 89%

Thiophene‐containing compounds with antimicrobial activity

Roman¹

2022

Archiv der Pharmazie

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“…The diffuse re ectance spectrum of the Co(II) complex, exhibits two peaks at 614 and 698 nm assigned to the transition 4 T 1g (F)→ 4 T 2g (F) and 4 T 1g (F)→ 4 A 2g (F), respectively suggesting an octahedral geometry for this complex [44]. The diffuse re ectance spectrum of Ni(II) complex showed two peaks around 505 and 636 nm, attributed to 3 A 2g (F) → 3 T 2g (F) and 3 A 2g (F)→ 3 T 1g (P) transitions, respectively, indicating an octahedral geometry [45]. On the other hand, the diffuse re ectance spectra in both Co(II) and Ni(II) complexes showed two bands at 445 and 444 nm, respectively corresponding to charge transfer [46,47].…”

Section: Diffuse Re Ectance Spectramentioning

confidence: 99%

Structural Characterization, DFT Calculations, Metal Uptake, Fluorescence, Antimicrobial and Molecular Docking Studies of Novel Co(II) and Ni(II) Complexes with NNS Tridentate Schiff base Ligand

Ali

Nassar

Shehata

et al. 2022

Preprint

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A new Schiff base ligand N2-((5-methylthiophen-2-yl) methylene) pyridine-2,6-diamine (L) was prepared by condensation of 5-Methyl-2-thiophenecarboxaldehyde and 2,6-diaminopyridine in ethanol in a molar ratio 1:1. The ligand and its complexes were characterized based on elemental analyses, molar conductance, magnetic moment, IR, MS, 1H NMR, solid reflectance, and thermal analysis (TG and DTG) techniques. The complexes were found to have the formulas [CoL(H2O) Cl2].H2O and [NiL(H2O)Cl2].2H2O. From FTIR spectral data, the coordination between the ligand L to the central metal ion was through its nitrogen of pyridyl and azomethine and sulfur of 2-thiophenecarboxaldehyde. The metal complexes were found to be nonelectrolyte. Octahedral geometries of the Co(II) and Ni(II) complexes were investigated from electronic and magnetic data. The kinetic analysis of the thermogravimetric data was performed by using the Coats-Redfern equation. The fluorescence properties of the ligand and its complexes in DMF were studied. The values of optical band gap energy (Eg) of the synthesized complexes suggested that these compounds could be used as semiconductors. The adsorption of Co2+ and Ni2+ in aqueous solutions on ligand under various conditions was studied. The maximum adsorption percentage of Co(II) and Ni(II) were found to be 68% and 65%, respectively. The Molecular docking studies were executed to consider the nature of binding and binding affinity of the synthesized compounds with the receptor of Bacillus subtilis (gram +ve bacteria) and Escherichia coli (gram –ve bacteria) (PDB ID: 1fj4). The ligand and its complexes were tested as antimicrobial agents.

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“…The reaction mixture was refluxed for 8 h and then left for complete precipitation. The reaction product was filtered, washed with diethyl ether and recrystallized from ethanol [9]. The chemical structure of the produced Schiff base compound is illustrated in Scheme 1.…”

Section: Synthesis Of Schiff Basementioning

confidence: 99%

Synthesis, Structure Characterization and Biological Activity of Co (II), Cu (II), and Zn (II) Complexes with (Z)‐3‐((3‐hydroxybenzylidene)amino)pyridin‐1‐ium 4‐(dodecan‐4‐yl)benzenesulfonate Surfactant

Tawfik

Zaky

2015

J Surfact & Detergents

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Z)-3-((3-hydroxybenzylidene)amino)pyridin-1-ium4-dodecylbenzenesulfonate anionic surfactant and its cobalt, copper and zinc complexes were synthesized (I, I-Co, I-Cu and I-Zn). The chemical structures of it were characterized by elemental analysis, FTIR, 1 H-NMR, UV-Vis spectroscopy and atomic adsorption. The effects of the chemical structures of the synthesized anionic surfactant and the type of transition metals on the surface activity are presented in this paper. The thermodynamic parameters show that adsorption and micellization processes are spontaneous. The results of biological activity measurements showed that the synthesized compounds have a great efficiency against gram positive (Bacillus subtilis and Staphylococcus aureus), gram-negative bacteria (Pseudomonas aeruginosa and Escherichia coli) and fungi (Candida albicans and Aspergillus niger) as well as the sulfate reducing bacteria (Desulfomonas pigra). The complexation of the anionic surfactant with Co 2? , Cu 2? and Zn 2? increase the antimicrobial activity values.

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A modern technique for preparation of zinc(II) and nickel(II) nanometric oxides using Schiff base compounds: synthesis, characterization, and antibacterial properties

Cited by 7 publications

References 19 publications

Thiophene‐containing compounds with antimicrobial activity

Thiophene‐containing compounds with antimicrobial activity

Structural Characterization, DFT Calculations, Metal Uptake, Fluorescence, Antimicrobial and Molecular Docking Studies of Novel Co(II) and Ni(II) Complexes with NNS Tridentate Schiff base Ligand

Synthesis, Structure Characterization and Biological Activity of Co (II), Cu (II), and Zn (II) Complexes with (Z)‐3‐((3‐hydroxybenzylidene)amino)pyridin‐1‐ium 4‐(dodecan‐4‐yl)benzenesulfonate Surfactant

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