Studies on Synthetic, Structural Characterization, Thermal, DNA Cleavage, Antimicrobial and Catalytic Activity of Tetradentate (N4) Schiff Base and Its Transition Transition Metal Complexes

Gandhi, S.; Kumar, D. Sathis; Tajudeen, S. Syed; Sheriff, Ahmed

doi:10.14233/ajchem.2017.20416

Cited by 7 publications

(2 citation statements)

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“…The spectrum of Fig. 3 shows a clear a strong peak at 183.2 ppm, which is an attribute to the carbonyl moiety of the carboxylic group [22]. The calculated chemical shift value of the carbon atom of the carboxylic group appears at 178.6 ppm.…”

Section: Mass Spectrummentioning

confidence: 91%

Synthesis and DFT Study of the Complexation of Schiff Base Derived Curcumin and L-Tyrosine with Al(III), Ag(I), and Pb(II) Metal Ions

et al. 2021

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The multi-dentate Schiff base ligand (H2L), where H2L=2,2'-(((1,3,5,6)-1-(3-((l1-oxidaneyl)-l5-methyl)-4-hydroxyphenyl)-7-(4-hydroxy-3-methoxyphenyl)hepta-1,6-diene-3,5-diylidene)bis(azaneylylidene))bis(3-(4-hydroxyphenyl)propanoic acid), has been prepared from curcumin and L- Tyrosine amino acid. The synthesized Schiff base ligand (H2L) and the second ligand 1,10-phenanthroline (phen) are used to prepare the new complexes [Al(L)(phen)]Cl, K[Ag(L)(phen)] and [Pb(L)(phen)]. The synthesized compounds are characterized by magnetic susceptibility measurements, micro elemental analysis (C.H.N), mass spectrometry, molar conductance, FT-infrared, UV-visible, atomic absorption (AA), 13C-NMR, and 1H-NMR spectral studies. The characterization of the synthesized complexes shows that the environment surrounding the central metal ion in the complexes adopted a distorted octahedral configuration. Moreover, the conductivity measurements show a non-electrolytic character for the [Pb(L)(phen)] complex and an electrolytic character for the [Al(L)(phen)]Cl and K[Ag(L)(phen)] complexes. The experimental infrared data are supported by density functional theory (DFT) calculations using the B3LYP level of theory and LANL2DZ basis set. The vibrational frequencies of the molecules are computed using the optimized geometry obtained from the DFT calculations. The calculated vibrational frequencies have been compared with obtained experimental values. 1H and 13C-NMR chemical shifts were computed for the H2L ligand using the DFT/GIAO method. Additionally, the molecular electronic structures of the complexes have been investigated by DFT calculations.

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Section: Mass Spectrummentioning

confidence: 91%

Synthesis and DFT Study of the Complexation of Schiff Base Derived Curcumin and L-Tyrosine with Al(III), Ag(I), and Pb(II) Metal Ions

et al. 2021

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“…Tetradentate Schiff base ligands with a N 2 O 2 donor atom are popular for coordinating with different metal ions [11][12][13]. These Schiff base complexes have attracted more attentions since they can be used as antibacterial, antifungal, and antitumor agents [14][15][16][17][18]. Because of the applications of Schiff base complexes in the preparation of CuO nanoparticles, they have received considerable attention recently [19].…”

Section: Introductionmentioning

confidence: 99%

Spectral, Structural, and Antibacterial Study of Copper(II) Complex with N2O2 Donor Schiff Base Ligand and Its Usage in Preparation of CuO Nanoparticles

Saadat

Banaei

McArdle

et al. 2022

Journal of Chemistry

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A new Schiff base complex, Cu(H2L)2 (H3L: 6,6 ′ -((1E,1 ′ E)-((azanediylbis(ethane-2,1-diyl))bis(azanylylidene))bis(methanylylidene))bis(2-methoxyphenol)), through the reaction of ligand H3L with Cu(NO3)2 3H2O, in the ratio of 2 : 1 in methanol solvent was prepared. The obtained ligand (H3L) was characterized by FT-IR, 13C NMR, 1H NMR and elemental analyses. Then its copper(II) complex was prepared and characterized by FT-IR spectroscopy, thermal studies, elemental analyses and single crystal X-ray diffraction. The X-ray crystallography revealed that the two H3L ligands in bidentate fashion coordinated to one copper center for producing Cu(H2L)2 complex. We used copper(II) Schiff base complex, Cu(H2L)2, for the preparation of CuO nanoparticles via solid-state thermal decomposition. The crystalline structure of the product was studied by X-ray powder diffraction (XRD) and scanning electron microscopy (SEM). XRD indicated that the new product was copper oxide. SEM image showed that the size of CuO nanoparticles was between 46 and 53 nm, and they had uniform shape. The antibacterial properties of the complex and ligand were also investigated. The results revealed that Schiff base complex showed higher biological activity than Schiff base ligand.

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Ct-DNA binding and antimicrobial studies of MnII and FeII macrocyclic complexes

Kumar

Vashistha

Das

et al. 2022

J Incl Phenom Macrocycl Chem

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Studies on Synthetic, Structural Characterization, Thermal, DNA Cleavage, Antimicrobial and Catalytic Activity of Tetradentate (N4) Schiff Base and Its Transition Transition Metal Complexes

Cited by 7 publications

References 0 publications

Synthesis and DFT Study of the Complexation of Schiff Base Derived Curcumin and L-Tyrosine with Al(III), Ag(I), and Pb(II) Metal Ions

Synthesis and DFT Study of the Complexation of Schiff Base Derived Curcumin and L-Tyrosine with Al(III), Ag(I), and Pb(II) Metal Ions

Spectral, Structural, and Antibacterial Study of Copper(II) Complex with N2O2 Donor Schiff Base Ligand and Its Usage in Preparation of CuO Nanoparticles

Ct-DNA binding and antimicrobial studies of MnII and FeII macrocyclic complexes

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