Spectral, Thermal and Antimicrobial Properties of Novel Mixed Ligand-Metal Complexes Derived from Saccharinate Complexes and Azo Dye Ligand

Adigüzel, Ragıp; Turan, Nevin; Buldurun, Kenan; Körkoca, Hanifi

doi:10.3923/ijp.2018.9.19

Cited by 9 publications

(5 citation statements)

References 23 publications

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“…The bands assigned to the azomethine group (C=N) in the Schiff base ligands (HL 2 ) were observed at (1602) cm -1 and shifted to lower frequency in all metal complexes. This indicates the participation of the nitrogen atom of the azomethine group in coordination [24]. Abroad vibration bands at (3144) cm -1 in the ligand (HL 2 ) were assigned to the phenolic OH group.…”

Section: Infrared Spectramentioning

confidence: 93%

Synthesis and Characterization Some Complexes of Mixed Ligand and Study Its Effects as Antioxidant and Anticancer

Al- haddad,

Layla Ali Mohammed

2023

J. K. Chem. Sci.

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A series of mixed ligand complexes of Co(II), Ni(II), Cu(II), Zn (II),Cd(II), Fe (III ) andAu(III) were prepared and characterized. A new azo ligand derived from 4-methylimidazole with sulfadiazine and Schiff base derived from 4-(dimethylamino)-2-hydroxobenzaldehyde and 4-amino-3-hydroxy benzene sulfonamide. Ligands structures and their transitional metal mix-ligand complexes were characterized using various analytical techniques, including molar conductance, elemental analysis (C.H.N), electronic spectral, magnetic measurements, 1HNMR, IR spectral studies and mass spectra. The data shows that these complexes have composition of [ML1L2H2O] where M = Co(II), Ni(II), Cu(II), Zn(II) ,Cd(II) and Hg(II). [ML1L2Cl] where M=Fe(III). [ML1L2]Cl2 where M=Au(III). The magnetic susceptibility and electronic spectral data of the complexes indicate that the octahedral geometry of all complexes, except the complex of Au(III) indicates a square plane geometry. The IR results demonstrate that the co-ordination sites are imidazole nitrogen atom and the farthest azo nitrogen atom of L1 as natural bidentate with nitrogen the azomethine and oxygen atoms of Schiff base L4. Azo ligand and Schiff base behave as tridentate manner. All the compounds showed DPPH radical scavenging activity. In general, the results indicated that the complexes have potential and promising anti-oxidant activities.

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Section: Infrared Spectramentioning

confidence: 93%

Synthesis and Characterization Some Complexes of Mixed Ligand and Study Its Effects as Antioxidant and Anticancer

Al- haddad,

Layla Ali Mohammed

2023

J. K. Chem. Sci.

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“…Free radical scavenging activities were evaluated by previously modified DPPH (1,1-diphenyl-2-picrylhydrazyl) assay. [54,55] This method is based on the reducing absorbance of DPPH free radical. For this purpose, different concentrations (10-30 μg/mL) of ligand, metal complexes, and standard antioxidants were prepared in 2 mL ethanol.…”

Section: Dpph Radical Scavenging Methodsmentioning

confidence: 99%

Spectroscopic and Structural Characterization, Enzyme Inhibitions, and Antioxidant Effects of New Ru(II) and Ni(II) Complexes of Schiff Base

Buldurun

Turan

Aras

et al. 2019

Chemistry & Biodiversity

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The new complex compounds [RuLCl(p‐cymene)] ⋅ 3H2O and [NiL2(H2O)2] ⋅ 3H2O (L: 1‐{4‐[(2‐hydroxy‐3‐methoxybenzylidene)amino]phenyl}ethanone) were prepared and characterized using FT‐IR, 1H‐ and 13C‐NMR, mass spectroscopy, TGA, elemental analysis, X‐ray powder diffraction and magnetic moment techniques. Octahedral geometry for new Ni(II) and Ru(II) complexes was proposed. Thermal decomposition confirmed the existence of lattice and coordinated water molecule in the complexes. To determine the antioxidant properties of Schiff base ligand and its Ni(II), Ru(II) metal complexes, FRAP, CUPRAC, ABTS and DPPH methods of antioxidant assays were used. Moreover, enzyme inhibition of complexes was evaluated against carbonic anhydrase I and II isoenzymes (CA I and CA II) and acetylcholinesterase (AChE). For CA I and CA II, the best inhibition enzymes, was the Ni(II) complex with 62.98±18.41, 86.17±23.62 Ki values, whereas this inhibition effect showed ligand with 24.53±2.66 Ki value for the AChE enzyme.

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“…[1] Mixed ligand complexes consisting of two or more different ligands have been widely explored because they can provide new materials with the useful magnetic exchange, [7][8][9][10] electrical conductivity, [11,12] photoluminescence, [13][14][15] nonlinear optical, [16,17] metallo-enzyme and antimicrobial activity properties. [18][19][20][21] Due to the presence of several heteroatoms acting as donor atoms, thiazolylazo dyes are an important class of organic complexing reagents. Spectrophotometry, extrac-tion, liquid chromatography, and electrochemistry are the most common uses for heterocyclic azo dyes in chemical operations.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Electrochemical and Antioxidant Properties of New Thiazolylazo‐based Mixed Ligand Metal Complexes

et al. 2023

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The complexes of 4‐(2‐thiazolylazo)resorcinol (TAR) and 2,2′‐bipyridine (bpy), [M(bpy)(TAR)(H2O)]AcO [(M=CoII, CuII, ZnII] and [Mn(bpy)(TAR)AcO] were synthesized and their structure was determined by elemental analysis, thermal analysis (DTA/TGA), IR spectroscopy, molar conductivity, and magnetic measurements. The ligand 4‐(2‐thiazolylazo)resorcinol coordinated to metalII ions via azo and thiazolyl group nitrogens and one oxygen atom of resorcinol, while 2,2′‐bipyridine also contributed two coordination bonds via its nitrogen atoms. The electrochemical profile of the compounds was investigated by cyclic voltammetry (CV) which confirmed their electrochemical activity. The results obtained by CV method pointed out that the electrode reactions were diffusion controlled. The total antioxidant capacities of the ligands and complexes were evaluated by using cupric reducing antioxidant capacity (CUPRAC) method. The complexes displayed more antioxidant activity than their ligands. The Trolox equivalent antioxidant activity (TEAC) values of all complexes exhibited more higher and approximate values to Trolox but bpy ligand did not show any activity.

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Spectral, Thermal and Antimicrobial Properties of Novel Mixed Ligand-Metal Complexes Derived from Saccharinate Complexes and Azo Dye Ligand

Cited by 9 publications

References 23 publications

Synthesis and Characterization Some Complexes of Mixed Ligand and Study Its Effects as Antioxidant and Anticancer

Synthesis and Characterization Some Complexes of Mixed Ligand and Study Its Effects as Antioxidant and Anticancer

Spectroscopic and Structural Characterization, Enzyme Inhibitions, and Antioxidant Effects of New Ru(II) and Ni(II) Complexes of Schiff Base

Synthesis, Electrochemical and Antioxidant Properties of New Thiazolylazo‐based Mixed Ligand Metal Complexes

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