Novel sandwich triple-decker dinuclear NdIII-(bis-N,N′-p-bromo-salicylideneamine-1,2-diaminobenzene) complex

Abu‐Dief, Ahmed M.; Díaz-Torres, Raúl; Sañudo, E. Carolina; Abdel‐Rahman, Laila H.; Aliaga‐Alcalde, Núria

doi:10.1016/j.poly.2013.04.010

Cited by 46 publications

(22 citation statements)

References 37 publications

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“…On complexation, this band is dislodged to a down hesitation. The negative shift of this band is an obvious marker of the participation of the azomethine nitrogen atoms in complex consistence . This is supported by the manifesting of band at 527‐535 cm ‐1 coinciding to the stretching vacillation of M–N bond.…”

Section: Resultsmentioning

confidence: 99%

“…The negative shift of this band is an obvious marker of the participation of the azomethine nitrogen atoms in complex consistence. [1,2,9,20,21,[24][25][26] This is supported by the manifesting of band at 527-535 cm -1 coinciding to the stretching vacillation of M-N bond. The bands subsist at 732-736 cm -1 coincide to the M-O stretching vacillations.…”

Section: Infrared Spectramentioning

confidence: 93%

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Sonochemical synthesis, structural inspection and semiconductor behavior of three new nano sized Cu(II), Co(II) and Ni(II) chelates based on tri‐dentate NOO imine ligand as precursors for metal oxides

Rahman

Abu‐Dief

El‐Khatib

et al. 2017

Applied Organom Chemis

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Three novel nanosized Cu(II), Co(II) and Ni(II) complexes of imine ligand attained from the condensation of 2‐amino‐3‐hydroxypyridine and 3‐methoxysalicylaldehyde have been prepared and investigated using diverse chemical methods such as NMR, CHN analysis, conductance, IR, Spectral studies, TGA and magnetic moment measurements. The obtained data confirmed that the synthesized complexes have metal: ligand ratio of 1:1 and octahedral geometry for Co(II) and Ni(II) complexes. Interestingly, The complexes are used as precursors for producing CuO, Co2O3 and NiO nanoparticles by calcination at 500 °C and their structures were described by powder x‐ray and transmittance electron microscopy. Furthermore, to investigate the feasibility of using the synthesized materials for semiconductor based nanodevices, the electrical properties of the prepared imine complexes and their corresponding metal oxides were investigated by measuring the electrical conductivity over a temperature range 373‐593 K. The data confirm that the materials are semiconductor. The electrical conduction process in the complexes is governed by intermolecular and intramolecular transfer of the charge carriers. But, the conduction mechanism arises from the contribution of the phonon‐assisted small polaron hopping in NiO nanoparticles and charge carrier hopping in CuO and Co2O3 nanoparticles. The results indicate that the complexes under study are promising candidates for wide scale of organic based semiconducting devices.

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Section: Resultsmentioning

confidence: 99%

Section: Infrared Spectramentioning

confidence: 93%

Sonochemical synthesis, structural inspection and semiconductor behavior of three new nano sized Cu(II), Co(II) and Ni(II) chelates based on tri‐dentate NOO imine ligand as precursors for metal oxides

Rahman

Abu‐Dief

El‐Khatib

et al. 2017

Applied Organom Chemis

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“…The structure was solved by using the program(s): SHELXS86 [22][23][24]; program(s) used to refine structure: CRYSTALS [25]; molecular graphics: CAMERON [26]; software used to prepare material for publication. A summary of the key crystallographic information is given in Table S1.…”

Section: X-ray Crystallographymentioning

confidence: 99%

Some New Nano-sized Mononuclear Cu(II) Schiff Base Complexes: Design, Characterization, Molecular Modeling and Catalytic Potentials in Benzyl Alcohol Oxidation

et al. 2016

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In the present contribution, some novel Cu(II) complexes were synthesized from tri-and tetradentate imine ligands. All the prepared compounds were elucidated by different physicochemical methods. Density Functional Theory calculations were carried out to explain the equilibrium geometry of the bsisnph and npisnph ligands and their Cu(II) complexes. Interaction of the synthesized ligands with Cu(II) affords nano-sized particles via TEM. The catalytic potentials of the prepared complexes has been tested within the oxidation of benzyl alcohol using an environmental friendly terminal oxidant, i.e. H 2 O 2 . The effect of various parameters, e.g. solvents, temperature and amount of catalyst was investigated. A mechanistic pathway of the catalytic oxidation was tentatively described and discussed. Graphical AbstractKeywords Cu(II) Schiff base complexes · TEM · Benzyl alcohol · Density Functional Theory · Catalytic activity · Hydrogen peroxide

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“…Although a large amount of information is reported on the coordination chemistry of Schiff bases with a variety of metal ions and their biological activities, little is known about bidentate NO imine ligand and their complexes. Considering this reason and also as a continuation of our previous research works, the present study describes the synthesis and characterizations of the new bidentate imine chelator and its VO (II) and Pd (II) complexes. The characterizations of spectroscopic and the thermal for these new metal chelates have been reported.…”

Section: Introductionmentioning

confidence: 99%

Novel azomethine Pd (II)‐ and VO (II)‐based metallo‐pharmaceuticals as anticancer, antimicrobial, and antioxidant agents: Design, structural inspection, DFT investigation, and DNA interaction

Abu‐Dief

Abdel‐Rahman

Shehata

et al. 2019

J of Physical Organic Chem

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The new NO bidentate imine ligand, namely, (2‐[(3‐nitro‐benzylidene)‐amino]‐benzoic acid) (NBA) imine ligand (L), and its Pd (II) and VO (II) complexes have been synthesized and characterized by utilizing different physiochemical methods including elemental analyses, Fourier transform infrared (FT‐IR), nuclear magnetic resonance (NMR), molar conductance, and magnetic susceptibility measurements. The stability constant of these complexes has also been determined. In studies of these complexes, they were found to have [M(L)] composition where the ligand acts as a bidentate and coordinates with the various metal ions through azomethine and one oxygen atom. Moreover, the suggested geometrical structure of Pd (II) and VO (II) complexes is square planar and a distorted square pyramid, respectively. Density functional theory (DFT) calculations for the different metal complexes were studied and show a good agreement with the experiment data. The minimum inhibitory concentration method has been applied to evaluate the in vitro antimicrobial activity. Furthermore, the interaction of calf thymus DNA with the metal‐imine chelates has been assessed, and Pd (II) complex showed the strongest interaction with DNA for a binding constant value of (9.72 × 104 kcal mol−1). The cytotoxic activity of the new metal chelates has been evaluated against three human cancer cell lines (hepatic carcinoma HepG2 cells, breast carcinoma cells MCF‐7, and colon carcinoma cells HCT‐116). It has found that NBAPd complex exhibited a significant decrease in the time and dose of the cell viability than did the reference drug vinblastine. The antioxidant activity of the tested compounds was determined and compared with that of vitamin C as a standard drug. It has been found that the metal complexes exhibit higher activity than the free ligand. The finding from this investigation revealed that the new compounds are considered to be prospective antibiotic and anticancer agents.

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Novel sandwich triple-decker dinuclear NdIII-(bis-N,N′-p-bromo-salicylideneamine-1,2-diaminobenzene) complex

Cited by 46 publications

References 37 publications

Sonochemical synthesis, structural inspection and semiconductor behavior of three new nano sized Cu(II), Co(II) and Ni(II) chelates based on tri‐dentate NOO imine ligand as precursors for metal oxides

Sonochemical synthesis, structural inspection and semiconductor behavior of three new nano sized Cu(II), Co(II) and Ni(II) chelates based on tri‐dentate NOO imine ligand as precursors for metal oxides

Some New Nano-sized Mononuclear Cu(II) Schiff Base Complexes: Design, Characterization, Molecular Modeling and Catalytic Potentials in Benzyl Alcohol Oxidation

Novel azomethine Pd (II)‐ and VO (II)‐based metallo‐pharmaceuticals as anticancer, antimicrobial, and antioxidant agents: Design, structural inspection, DFT investigation, and DNA interaction

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