Synthesis and Spectroscopic Studies of NN-O-Phenylenebis (Salicylideneiminato) Dioxouranium (VI) Solvates (L) CL = DMF and PY)

Nour, E. M.; Al-Kority, A. M.; Sadeek, Sadeek A.; Teleb, Said M.

doi:10.1080/15533179308016615

Cited by 31 publications

(18 citation statements)

References 14 publications

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“…The position or the intensities of these peaks are expected to be changed upon complexation. The proposed structures for all complexes is represented by Scheme 1, the four donor atoms of CIP-o-phdn coordinated to central metal ions in a plane forming tetragon with the two oxygen atoms of the two coordinated water molecules in axial position [18]. According to the proposed structures for the complexes under investigation, the complexes posses a two-fold axis and two plane of symmetry and hence they are C 2ν symmetry.…”

Section: Ir Absorption Spectramentioning

confidence: 99%

“…Earlier work has shown that some drugs studied increased activity when administrated as metal chelates rather than as organic compounds [15,16] and that the coordination possibility of o-phenylenediamine has been improved by condensation with a variety of carbonyl compounds. Tetradentate Schiff bases with a N 2 O 2 donor atom set are well known to coordinate with various metal ions, and this has attracted many authors [17,18]. Some Co(II), Cu(II) and Fe(II) Schiff base chelate complexes show catalytic activity in oxygenation of alkene and increase the rate of hydrolysis more than simple salt [10,13].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and characterization and antibacterial activity of some new transition metal complexes with ciprofloxacin-imine

Sadeek¹,

El‐Attar²,

El‐Hamid³

2015

Bull. Chem. Soc. Eth.

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ABSTRACT. Some new transition metal complexes of ciprofloxacin-imine derived from ciprofloxacin and ophenylenediamine were synthesized and characterized on the basis of melting point, magnetic moment, conductance measurements, elemental analysis, infrared, UV/Vis, nuclear magnetic resonance spectroscopy, mass spectra as well as thermal analyses. The data indicate that the ligand acts as tetradentate chelate bound to the metal ions through the deprotonated carboxylate and the azomethine group. The ligand as well as their metal complexes was also evaluated for their antibacterial activity against several bacterial strains such as Staphylococcus aureus, Bacillus subtilis, Escherichia coli and Pseudomonas aeruginosa and also, fungicidal activity aganist Candida albicans and Aspergillus fumigatus were tested. It was found that the metal complexes are more antibacterial as compared to uncomplexes ligand and no antifungal activity observed for ligand and their complexes. Also, this study showed that the ciprofloxacin-imine is more antibacterial as compared to ciprofloxacin alone.

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Section: Ir Absorption Spectramentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization and antibacterial activity of some new transition metal complexes with ciprofloxacin-imine

Sadeek¹,

El‐Attar²,

El‐Hamid³

2015

Bull. Chem. Soc. Eth.

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“…The as (U¼O) occurs at 900 cm À1 as a very strong singlet and s (U¼O) is also very strong at 849 cm À1 . These assignments for uranyl agree with those for many dioxouranium(V †) complexes [49][50][51][52][53][54]. The s (U¼O) value was used as according to the known method [53,54], to calculate both the U¼O bond stretching force constant, F(U¼O), and bond length.…”

Section: Ir Data and Bondingmentioning

confidence: 98%

Spectroscopic, thermal analysis, and antimicrobial evaluation of new Y(III), Zr(IV), and U(VI) ibuprofen complexes

Zordok

Sadeek

El‐Shwiniy

2012

Journal of Coordination Chemistry

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New complexes of Y(III), Zr(IV), and U(VI) with the anti-inflammatory drug ibuprofen (IBU) have been synthesized and characterized by elemental analysis, spectroscopic techniques (UVVisible, IR, and 1 H NMR), magnetic moment determination, conductance measurements, and thermal analyses (thermogravimetric and differential thermogravimetric). The anti-inflammatory drug acts as bidentate chelate bound to metal ions through the deprotonated carboxylate. The calculated bond length and force constant, F(U¼O), in the uranyl complex are 1.815 Å and 671.69 Nm À1 , respectively. The metal-ligand binding of the Zr(IV) and Y(III) complexes is predicted using density functional theory at the B3LYP-CEP-31G level of theory and total energy, dipole moment estimation of different Zr(IV) and Y(III) ibuprofen structures. The antibacterial activity of the ligand, metal salts, and metal complexes have been tested, showing that the complexes are significant against all six bacterial species compared with IBU and metal salts.

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“…The Schiff bases have also been shown to exhibit a broad range of biological activities, including antifungal, antibacterial, antimalarial, antiproliferative, anti-inflammatory, antiviral, and antipyretic properties [3,4]. Multidentate Schiff base complexes are well known to form stable complexes, where the coordination takes place through the various donor sets [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization and DFT Calculations of 4-((2-Hydroxyethyl)imino)naphthalen-1(4H)-One and its Cu(II) Complex

Görgülü

Dede

2018

Acta Phys. Pol. A

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We have reported herein the synthesis of a novel quinone derivative ligand containing the Schiff base and its Cu(II) complex starting from 1,4-naphthoquinone. Synthesized compounds were characterized using the Fourier transform infrared, UV-Vis, elemental analysis, inductively coupled plasma optical emission spectrometry, molar conductivity, and magnetic susceptibility measurements. The free ligand was also characterized by 1 H-and 13 C-NMR spectra. Elemental analyses, stoichiometric and spectroscopic data indicated that the metal:ligand ratio is 1:2 and octahedral structure is proposed for the metal complex of the Schiff base ligand. Computational quantum calculations were also performed using DFT/B3LYP level of theory with 6-311++G(d,p) basis set for the synthesized ligand. It was found that the experimental and theoretical spectroscopic data were consistent.

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Synthesis and Spectroscopic Studies of NN-O-Phenylenebis (Salicylideneiminato) Dioxouranium (VI) Solvates (L) CL = DMF and PY)

Cited by 31 publications

References 14 publications

Synthesis and characterization and antibacterial activity of some new transition metal complexes with ciprofloxacin-imine

Synthesis and characterization and antibacterial activity of some new transition metal complexes with ciprofloxacin-imine

Spectroscopic, thermal analysis, and antimicrobial evaluation of new Y(III), Zr(IV), and U(VI) ibuprofen complexes

Synthesis, Characterization and DFT Calculations of 4-((2-Hydroxyethyl)imino)naphthalen-1(4H)-One and its Cu(II) Complex

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