Cu(II), Co(II) and Ni(II) complexes of new Schiff base ligand: Synthesis, thermal and spectroscopic characterizations

Refat, Moamen S.; El‐Sayed, Mohamed Y.; Adam, Abdel Majid A.

doi:10.1016/j.molstruc.2013.01.059

Cited by 95 publications

(45 citation statements)

References 29 publications

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“…The absorbance was measured at 517 nm against blank samples. The percentages of DPPH free radicals' consumption of different concentrations of samples and standards were measured by using the Equation (1).…”

Section: Dpph Scavenging Activitymentioning

confidence: 99%

“…In several decades, the studies of Schiff bases have been made to synthesize Schiff bases and their complexes to apply these compounds in the different fields of study [1][2][3][4][5][6]. So, the metal complexes of Schiff bases have been attracted attention of bioinorganic researches due to their antimicrobial, antibacterial, antifungal, antiviral, anti-mycobacterial, anti-inflammatory, analgesic, anti-tubercular and antioxidant activities [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis, characterization and antioxidant activity of Schiff base and its metal complexes with Fe(II), Mn(II), Zn(II), and Ru(II) ions: Catalytic activity of ruthenium(II) complex

Turan

Buldurun

2018

Eur. J. Chem.

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The synthesis, spectral, catalytic and antioxidant properties of ethyl-2-(2-hydroxy-3-methoxybenzylideneamino)-6-methyl-4,5,6-tetrahydrobenzo[b]thiophene-3-carboxylate (L) substituted iron(II), manganese(II), zinc(II), and ruthenium(II)-arene chlorides are described for the first time. The ligand and its metal complexes were characterized by elemental analysis, molar conductance, magnetic susceptibility measurements, and spectral ( 1 H NMR, 13 C NMR, FT-IR, UV-Vis and Mass) techniques. The FT-IR spectra showed that the ligand can act as bidentate or tridentate. Magnetic moments and electronic spectral studies revealed an octahedral geometry for all the complexes obtained. The thermal behavior of the complexes showed that the water molecules were separated in the first step followed immediately by decomposition of the anions and ligand molecules in the subsequent steps. Ru(II) complex was used as catalysts for the transfer hydrogenation of ketones. At the same time, the effect of various bases such as NaOH, KOH, KOBu t and NaOAc as organic base were investigated in the transfer hydrogenation of ketones by 2-propanol as the hydrogen source.The complexes and ligand were tested in vitro for their antioxidant activity. The experimental results showed that Ru(II) complex had more potent antioxidant activities than Zn(II), Fe(II), Mn(II) complexes and parent ligand.

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Section: Dpph Scavenging Activitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and antioxidant activity of Schiff base and its metal complexes with Fe(II), Mn(II), Zn(II), and Ru(II) ions: Catalytic activity of ruthenium(II) complex

Turan

Buldurun

2018

Eur. J. Chem.

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“…Biological actions of transition metal complexes derived from Schiff base ligand were one of the most exhaustively studied topics in coordination chemistry, due to their superior activities compared to non-Schiff base complexes [4][5][6][7]. The coordination chemistry of Schiff base complexes involving oxygen and nitrogen donor ligands has attracted considerable attention from the biochemists owing to their applications in catalysis and their relevance to bioinorganic systems (Shanker et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of 4-Amino Antipyrine Based Schiff Base Complexes: Antimicrobial, Cytotoxicity and DNA Cleavage Studies

Jayalakshmi¹,

Priya²,

Jayakkumar³

et al. 2017

IJERT

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“…[3][4][5][6] The coordination chemistry of transition metal complexes derived from Schiff base ligands have been among the majority widely studied coordination compounds in current years. 7,8 Since they are becoming increasingly important as analytical, biochemical and antimicrobial reagents and Metal complexes of O, S, and N-chelating ligands have more attracted considerable attention because of their interesting Physico-chemical properties, strong biological activities.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization, Antimicrobial, DNA cleavage, and Cytotoxicity Studies of Some Metal (II) Complexes of Tridentate Schiff Base Ligand: 2-hydroxy-3-((4-(4-phenylthiazol-2-yl) semicarbazide) methyl) Benzoic Acid

Karabasannavar¹,

Allolli²,

Kalshetty³

2017

IJPER

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Objective:The main aim of the present work was to synthesize a novel Schiff base ligand 2-hydroxy-3-((4-(4-phenylthiazol-2-yl) semicarbazide) methyl) benzoic acid is obtained by the condensation of N-(4-phenylthiazole-2-yl) hydrazine carboxamide with 3-Aldehydosalicylic acid and its Cu(II), Co(II), Ni(II), and Zn(II) complexes and study of their biological activity. Methods: The compounds are characterized by elemental analysis and various physicochemical techniques like IR, 1 H NMR, ESI-mass, and molar conductance data. All the compounds were screened for their antibacterial and antifungal activity by MIC method. Further, to study the in vitro cytotoxicity properties of all the compounds against Artemia salina and DNA cleavage activity by Agarose Gel Electrophoresis (AGE) method. Results: Spectral investigations suggested square pyramidal coordination geometrical arrangement for all the metal (II) complexes, having 1:1 stoichiometric ratio of the type [ML (Cl) 2 ]. The antimicrobial activity results revealed that the metal complexes were found to be more active than the free ligand. Furthermore, the DNA cleavage activity of the compounds on plasmid DNA pBR322 molecule showed moderate activity. Conclusion:The newly synthesized ligand acts as OON donor tridentate chelate and coordinated through an oxygen of azomethine nitrogen, Phenolic OH and Carboxylic acid (COOH) of 3-Aldehydosalicylic acid to the Cu, Co, Ni and Zn metal ions and form square pyramidal geometrical arrangement. All the complexes are found to be non-electrolytic in nature. Further, all the newly prepared compounds showed moderate biological activity.

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Cu(II), Co(II) and Ni(II) complexes of new Schiff base ligand: Synthesis, thermal and spectroscopic characterizations

Cited by 95 publications

References 29 publications

Synthesis, characterization and antioxidant activity of Schiff base and its metal complexes with Fe(II), Mn(II), Zn(II), and Ru(II) ions: Catalytic activity of ruthenium(II) complex

Synthesis, characterization and antioxidant activity of Schiff base and its metal complexes with Fe(II), Mn(II), Zn(II), and Ru(II) ions: Catalytic activity of ruthenium(II) complex

Synthesis and Characterization of 4-Amino Antipyrine Based Schiff Base Complexes: Antimicrobial, Cytotoxicity and DNA Cleavage Studies

Synthesis, Characterization, Antimicrobial, DNA cleavage, and Cytotoxicity Studies of Some Metal (II) Complexes of Tridentate Schiff Base Ligand: 2-hydroxy-3-((4-(4-phenylthiazol-2-yl) semicarbazide) methyl) Benzoic Acid

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