Synthesis, Characterization and Antimicrobial Studies of Salicylic Acid Complexes of Some Transition Metals

Yiase, S. G.; Adejo, Sylvester O.; Gbertyo, Joseph A.; Edeh, J.

doi:10.9790/5736-07420405

Cited by 17 publications

(18 citation statements)

References 7 publications

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“…This may enhance the penetration of the complex into the lipid membranes enabling it to block the metal binding sites in the enzymes of microorganisms. These complexes also disturb the respiratory processes of the cell and thus inhibit protein synthesis which restricts further growth of the organism [43]. The mechanism of action of antimicrobial agents can be categorized further based on the structure of the bacteria or the function that is affected by the agents.…”

Section: Applications Antibacterial Activity Of Complexes In Agar Mediummentioning

confidence: 99%

Synthesis of Co(II) and Cr(III) salicylidenic Schiff base complexes derived from thiourea as precursors for nano-sized Co3O4 and Cr2O3 and their catalytic, antibacterial properties

Kafi‐Ahmadi

Shirmohammadzadeh

2017

J Nanostruct Chem

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This study focuses on the synthesis of Co(II) and Cr(III) Schiff base complexes obtained from thiourea. The complexes were synthesized by template method and characterized by elemental analysis (CHNS), FT-IR, UVvis spectroscopy, conductivity measurement and magnetic moment. The spectroscopic studies suggested the octahedral and square-pyramidal structures for Co(II) and Cr(III) complexes, respectively. Then the complexes were used as precursors for preparation of Co 3 O 4 and Cr 2 O 3 nanoparticles via solid-state thermal decomposition without using a catalyst, toxic solvent, template or surfactant and complicated equipment, which makes it efficient, one-step, simple and environment-friendly. The chemical structure of the metal oxides is studied by FT-IR, XRD and SEM. To investigate the applications of the synthesized complexes, in the next step, the complexes were screened for antibacterial activity against clinically important bacteria such as Escherichia coli, Staphylococcus aureus, and Bacillus subtilis. The Cr(III) and Co(II) complexes showed good biological activity against all the tested bacteria. Also, the catalytic activities of the complexes were studied in toluene using non-toxic hydrogen peroxide as the oxidant. The results showed that Co(II) complex has catalytic activity for oxidation of toluene, but Cr(III) complex did not show any catalytic activity.

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Section: Applications Antibacterial Activity Of Complexes In Agar Mediummentioning

confidence: 99%

Synthesis of Co(II) and Cr(III) salicylidenic Schiff base complexes derived from thiourea as precursors for nano-sized Co3O4 and Cr2O3 and their catalytic, antibacterial properties

Kafi‐Ahmadi

Shirmohammadzadeh

2017

J Nanostruct Chem

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“…Other three peaks at 648 nm, 730 nm and 780 nm were found to be caused by (d-d) electronic transition type 4 T 1g(F) → 4 T 1(P) , 4 T 1g(F) → 4 A 2g(F) and 4 T 1g(F) → 4 T 2g(F) respectively (16) . The spectrum of Ni(II) complex appeared absorption peak at 233 nm was related to ligand field, then other three peaks at 360 nm, 540 nm and 772 nm were assigned to electronic transition type 3 A 2g(F) → 3 T 1(P) with charge transfer, 3 A 2g(F) → 3 T 2g(F) and 3 A 2g(F) → 3 T 1g(F) respectively (17) . The spectrum of Cu(II) complex gave absorption peak at 279 nm due to charge transfer.…”

Section: Resultsmentioning

confidence: 97%

Synthesis and Characterization of Co(II),Ni(II),Cu(II) and Zn(II) Complexes with Benzothiazol-2-yl-(4-chloro-benzylidene)-amine.

M.Alkuubaisi¹,

K.Sallom²,

Wea³

et al. 2016

IOSR

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The Benzothiazol-2-yl-(4-chloro-benzylidene)-amine was prepared by the reaction of 2aminobenzothiazole with 4-chlorobenzaldehyde, the prepared ligand was identified by Micro elemental Analysis, FT.IR and UV-Vis spectroscopic techniques. Treatment of the prepared ligand with the following selected metal ions (Co(II),Ni(II),Cu(II) and Zn(II)) in aqueous ethanol with a 1:2 M:L ratio, yielded a series of complexes of the general formula [M(L) 2 Cl 2 ]. The prepared complexes were characterized using flame atomic absorption, (C.H.N) Analysis, FT.IR and UV-Vis spectroscopic methods as well as magnetic susceptibility and conductivity measurements. From the obtained data the octahedral structure was suggested for all prepared complexes.

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“…Preparation of metal complexes: The general scheme for the preparation of the complexes is given below [19]: . A 20 mL methanolic solution of 0.625 g (0.004 mol) of 2,2-bipyridyl was added to it and the solution mixture was refluxed for 3 h with constant stirring.…”

Section: Methodsmentioning

confidence: 99%

Synthesis of Salicylic Acid Based Mixed Ligand Complexes: Their Protein Binding Affinities and Antimicrobial Activities

Aggarwal¹,

Mehtab²,

Maji³

2017

Asian J. Chem.

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Synthesis, Characterization and Antimicrobial Studies of Salicylic Acid Complexes of Some Transition Metals

Abstract: Salicylic

Cited by 17 publications

References 7 publications

Synthesis of Co(II) and Cr(III) salicylidenic Schiff base complexes derived from thiourea as precursors for nano-sized Co3O4 and Cr2O3 and their catalytic, antibacterial properties

Synthesis of Co(II) and Cr(III) salicylidenic Schiff base complexes derived from thiourea as precursors for nano-sized Co3O4 and Cr2O3 and their catalytic, antibacterial properties

Synthesis and Characterization of Co(II),Ni(II),Cu(II) and Zn(II) Complexes with Benzothiazol-2-yl-(4-chloro-benzylidene)-amine.

Synthesis of Salicylic Acid Based Mixed Ligand Complexes: Their Protein Binding Affinities and Antimicrobial Activities

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