XAFS study of metal chelates of phenylazo derivatives of Schiff bases

Бурлов, А. С.; Mashchenko, S. A.; Власенко, В. Г.; Zubavichus, Yan V.; Ураев, А. И.; Левченков, С. И.; Васильченко, И. С.; Гарновский, Д. А.; Бородкин, Г. С.

doi:10.1016/j.molstruc.2013.12.007

Cited by 16 publications

(3 citation statements)

References 43 publications

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“…Compounds HL 1 and HL 2 and related metal com plexes were synthesized to extend the range of com pounds with potential photoinduced changes in the magnetic properties due to the isomerization of the peripheral azo groups in the combined azo-azome thine complexes and to continue our earlier studies [34][35][36][37]. The structures of HL 1 and HL 2 were deter mined by 1 H NMR spectroscopy.…”

Section: Resultsmentioning

confidence: 99%

Metal complexes of azomethine compounds bearing an azo group in the amine fragment: Syntheses, structures, and properties

et al. 2015

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New complexes of Cu(II), Co(II), Ni(II), and Zn(II) with 1 phenyl 3 methyl 4 (4 phenyla zophenylaminomethylene)pyrazol 5 one (HL 1 ) and 1 phenyl 3 methyl 4 [4 methyl 2 (4 methylpheny lazo)phenylaminomethylene]pyrazol 5 one (HL 2 ) are synthesized using chemical and electrochemical methods and characterized by IR spectroscopy, 1 H NMR spectroscopy, X ray absorption spectroscopy, X ray diffraction analysis, and magnetic measurements. All complexes are mononuclear. The structures of HL 2 and related cobalt complex are determined by X ray diffraction analysis (CIF files CCDC nos. 1028957 and 1035847, respectively).

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Section: Resultsmentioning

confidence: 99%

Metal complexes of azomethine compounds bearing an azo group in the amine fragment: Syntheses, structures, and properties

et al. 2015

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“…[1,2] Azo-Schiff bases, having imine groups (C = N), are formed by the condensation reaction of (NH 2 ) primary amines with (CHO) aldehydes or (CO) ketones. [3][4][5][6][7][8] These compounds had been used for industrial purposes such as pigments, catalysts, liquid-liquid extraction, active transport, intermediates in organic synthesis and as polymer stabilizers.…”

Section: Introductionmentioning

confidence: 99%

A new azo‐Schiff base: Synthesis, characterization, biological activity and theoretical studies of its complexes

Zoubi

Al‐Hamdani

Ahmed

et al. 2017

Applied Organom Chemis

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A new Azo-Schiff base ligand L was prepared by reaction of m-hydroxy benzoic acid with (Schiff base B) of 3-[2-(1H-indol-3-yl)-ethylimino]-1.5-dimethyl-2-phenyl-2,3-dihydro-1H-pyrazol-4-ylamine. This synthesized ligand was used for complexation with different metal ions like Ni(II), Co(II), Pd(II) and Pt(IV) by using a molar ratio of ligand: metal as 1:1. Resulted compounds were characterized by NMR ( 1 H and 13 C), UV-vis spectroscopy, TGA, FT-IR, MS, elemental analysis, magnetic moment and molar conductivity studies. The activation thermodynamic parameters, such as ΔE*, ΔH * , ΔS * , ΔG * and K are calculated from the TGA curves using Coats-Redfern method. Hyper Chem-8 program has been used to predict structural geometries of compounds in gas phase. The biological activities of Schiff base and its complexes had been tested in vitro against, two Gram positive bacteria (Bacillus subtillis and Staphylococcus aureus) and two Gram negative bacteria (Escherichia coli and Pseudomonas aeruguinosa).

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“…In order to simulate the vibrations of aromatic hydrocarbons brought on by the =C-O bending, the absorption bands at 1225.8 cm-1 were employed. Stretching and bending vibrations of the sort =(C=S) are visible in the absorption band at 1176.2 cm-1 [24][25][26]. The 13C-NMR spectra showed the presence of twelve carbon atoms.…”

Section: Resultsmentioning

confidence: 98%

Synthesis, Thermal Study and Biological Activities of Schiff Base Ligand

Soam,

Kumar,

et al. 2022

ECB

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Organic substances known as "schiff bases" have a wide range of biological activity, which can be enhanced by coordinating with various metal ions. Their compounds can even function as heterogeneous catalysts in chemical processes or as corrosion inhibitors. This work concentrated on the Schiff base generated from 2amino-4-hydroxy-6-methyl pyrimidine due to the versatility of the Schiff base synthesis and its numerous possible applications. With the help of acetoacetic ester and guanidine, 2-amino-4-hydroxy-6methylpyrimidine was successfully synthesized. Treatment of Phenylisothiocyanate with 2-amino-4-hydroxy-6-methylpyrimidine followed to yield 1-(4-hydroxy-6-methylpyrimidino)-3-phenylthiocarbamide. The structure of the Schiff base ligand has been synthesized and characterized UV-visible, FTIR, 1 H NMR spectra, 13 C NMR spectra and thermal analysis and screened for antidiabetic and antimicrobial activity. The biological activity result and the spectroscopic data verified Schiff base production, demonstrating the antidiabetic, and antibacterial properties of 1-(4-hydroxy-6-methylpyrimidino)-3-phenylthiocarbamide.

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XAFS study of metal chelates of phenylazo derivatives of Schiff bases

Cited by 16 publications

References 43 publications

Metal complexes of azomethine compounds bearing an azo group in the amine fragment: Syntheses, structures, and properties

Metal complexes of azomethine compounds bearing an azo group in the amine fragment: Syntheses, structures, and properties

A new azo‐Schiff base: Synthesis, characterization, biological activity and theoretical studies of its complexes

Synthesis, Thermal Study and Biological Activities of Schiff Base Ligand

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