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Shakir, Mohammad; Islam, Khan S.; Mohamed, Ajax K.; Jahan, Nafees

doi:10.1023/a:1018435701752

Cited by 26 publications

(4 citation statements)

References 14 publications

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“…The amide macrocyclic complexes are of special interest since they can function as catalyst in many oxidation reactions [18]. Several macrocyclic complexes containing amide groups have been reported [19][20][21]. Prompted by these applications, in the present paper the synthesis of macrocyclic complexes of Co (II) , Ni (II) , Cu (II) , Zn (II) and Cd (II) is reported.…”

Section: Introductionmentioning

confidence: 93%

Synthesis and characterization of complexes of Co(II), Ni(II), Cu(II), Zn(II), and Cd(II) with macrocycle 3,4,11,12-tetraoxo-1,2,5,6,9,10,13,14-octaaza-cyclohexadeca-6,8,14,16-tetraene and their biological screening

Singh

Kumar

Malik

et al. 2007

Transition Met Chem

114

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A new series of complexes is synthesized by template condensation of glyoxal and oxalyldihydrazide in methanolic medium in the presence of divalent cobalt, nickel, copper, zinc and cadmium salts forming complexes of the type:3 ; OAc À1 . The complexes have been characterized with the help of elemental analyses, conductance measurements, magnetic susceptibility measurements, electronic, n.m.r., infrared and far infrared spectral studies. On the basis of these studies, a six coordinate octahedral geometry for these complexes has been proposed. The biological activities of the metal complexes have been tested in vitro against a number of pathogenic bacteria to assess their inhibiting potential. Most of the compounds have been found to exhibit remarkable antibacterial activities.

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Section: Introductionmentioning

confidence: 93%

Synthesis and characterization of complexes of Co(II), Ni(II), Cu(II), Zn(II), and Cd(II) with macrocycle 3,4,11,12-tetraoxo-1,2,5,6,9,10,13,14-octaaza-cyclohexadeca-6,8,14,16-tetraene and their biological screening

Singh

Kumar

Malik

et al. 2007

Transition Met Chem

114

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“…In the complexes’ far IR spectra revealed bands that corresponded to (M–N) stretching vibrations in the range 458–489 cm −1 , which shed light on how the amide nitrogen was coordinated to the cobalt metal atom. The bands in the 321–341 cm −1 range were attributed to the stretching vibration of (M-Cl) (Shakir et al 1997 ; Kalaivanan et al 2020 ). Phenyl ring vibrations may be responsible for the absorption bands in the ranges of 1445–1482 cm −1 , 1038–1073 cm −1 , and 725–756 cm −1 in Fig.…”

Section: Resultsmentioning

confidence: 99%

Synthesis, structural characterization, thermal analysis, DFT, biocidal evaluation and molecular docking studies of amide-based Co(II) complexes

et al. 2023

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Many distinct amino acid and aromatic amine-derived transition metal complexes are used as physiologically active compounds. A few Cobalt (II) complexes have been synthesized by reacting cobalt (II) chloride with 1, 8-diaminonapthalene-based tetraamide macrocyclic ligands in an ethanolic media. These synthesized ligands (TAML 1-3 ) and associated Co(II) complexes were fully characterized with various spectroscopic techniques, such as IR, NMR, CHN analysis, EPR, molar conductance, and magnetic susceptibility measurements, TGA, UV–visible spectra, powder X-ray diffraction and DFT analysis. The IR spectra reveal interactions between the core metal atom and ligands through N of 1, 8-diaminonapthalene. The distorted octahedral geometry of synthesized Co(II) macrocyclic complexes were confirmed by ESR, UV–Vis and DFT studies. The synthesized ligands (TAML 1 -TAML 3 ) and their Co(II) complexes were tested for antimicrobial activity against A. niger, C. albicans, and F. oxysporum in addition to bacteria like S. aureus, B. subtilis, and Gram-negative bacteria like E. coli. The ligand TAML 1 and complex [Co(TAML 1 )Cl 2 ] showed an excellent antibacterial activity. The minimum inhibitory concentration of TAML 1 and [Co(TAML 1 )Cl 2 ] against S. aureus were found to be 7 mm and 10 mm zone of inhibition at 500 ppm, respectively, compared to drug ampicillin (3 mm). Additionally, each molecule exhibited notable antioxidant activity. The biological significance of the synthesized compounds was then evaluated by molecular docking experiments with the active site of the receptor protein such as Sars-Cov-2 , C. Albicans, X. campestris and E. coli . The molecular docking assisted data strongly correlated to the experimental approach of antimicrobial activity. Graphical Abstract Supplementary Information The online version contains supplementary material available at 10.1007/s11696-023-02843-y.

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“…The presence of bands in all complexes in the region 420-450 cm¯1 originates from the (M-N) azomethine vibrational modes and identifies coordination of azomethine nitrogen 25 . The bands present at 290-310 cm¯1 may be assigned to υ (M-Cl) vibrations 26,27 .…”

Section: Resultsmentioning

confidence: 99%

Synthesis, Physical Characterization and Biological Evaluation of Schiff BaseCr(III), Mn(III) and Fe(III) Complexes

Kumar

Kumar²,

Devi³

et al. 2010

Journal of Chemistry

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M(III) complexes with Cr, Mn and Fe with Schiff base derived from 2-amino-4-ethyl-5-hydroxy benzaldehyde and oxocarbohydrazide were synthesized and characterized by several techniques using elemental analysis (C, H, N), molar conductance measurements, magnetic measurements, electronic, mass and IR spectral studies. On the bases of these studies, a five coordinated square pyramidal geometry for all these complexes has been proposed and found to be potential antimicrobial agent. The Schiff base ligand and complexes were also tested for their antimicrobial activity (against the bacteriaEscherichia coli, Staphylococcus aureus, Pseudomonas aeruginosaandBacillus megateriumand the fungiKluyveromyces fragilis, Rhodotorula rubra, Candida albicansandTrichoderma reesei) to assess their inhibiting potential. An attempt is also made to correlate the antimicrobial activity with geometry of the complexes. All complexes were found to be less active against the pathogensE.coli, S.aureusandP.aeruginosa. Cr(III) complex showed the best antimicrobial activity, but ligand alone was found to be active against the fungusT.reesei.

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Untitled

Cited by 26 publications

References 14 publications

Synthesis and characterization of complexes of Co(II), Ni(II), Cu(II), Zn(II), and Cd(II) with macrocycle 3,4,11,12-tetraoxo-1,2,5,6,9,10,13,14-octaaza-cyclohexadeca-6,8,14,16-tetraene and their biological screening

Synthesis and characterization of complexes of Co(II), Ni(II), Cu(II), Zn(II), and Cd(II) with macrocycle 3,4,11,12-tetraoxo-1,2,5,6,9,10,13,14-octaaza-cyclohexadeca-6,8,14,16-tetraene and their biological screening

Synthesis, structural characterization, thermal analysis, DFT, biocidal evaluation and molecular docking studies of amide-based Co(II) complexes

Synthesis, Physical Characterization and Biological Evaluation of Schiff BaseCr(III), Mn(III) and Fe(III) Complexes

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