ahmedabudief

Dr. Ahmed Mohamed Abu-Dief

Professor - Professor of Physical and Inorganic Chemistry

Faculty of science

Address: Behind hospital of Sohag University - Ali Ebn Abi Taleb Street

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Development Of Some Novel Azomethine Compounds As Chemo Sensors

2019 | Keywords receptor, solvent effect, DFT Calculations, Chemosensors, Azomethine,
Development Of Some Novel Azomethine Compounds As Chemo Sensors
Heavy metal pollution possess a great potential threat to the environment and has its own damaging effects to plants, animals and ultimately to human health, because of its release into the environment and water bodies results in a variety of illnesses related with the risk of dermal damage, respiratory problems and several kinds of cancer. On the other hand, the ... Read more

A comparative study for the effect of nano-sized Moringa oleifera and Delonix regia for removal heavy ions from water

2019 | Keywords Heavy metals, Delonix regia pod, Moringa Oleifera, Nano structures, thermodynamic parameters, Kinetics, Adsorption, Water purification, Removal efficiency,
A comparative study for the effect of nano-sized Moringa oleifera and Delonix regia for removal heavy ions from water
The ability of natural biosorbents for removing heavy metal ionswere investigated by studying the effect of nano sized _Delonixregia _and _Moringa__ oleifera_on adsorption of Cd2+and Pb2+ions from aqueous solution. The investigated biosorbents (_Delonixregia_and _Moringa__oleifera)_ were characterized by FT-IR, SEM, TEM, XRD and EDS techniques.The influence of pH, temperature, adsorbent dosage, contact time and initial metal ion concentration on adsorption process ... Read more

Novel Azomethine Pd(II) and VO(II) Based Metallo-Pharmaceuticals as Anticancer, Antimicrobial and Antioxidant agents: Design, Structural inspection, DFT investigation and DNA interaction

2019 | Keywords Imine complexes, DFT Calculations, Antimicrobial activity, DNA interaction, anticancer activity,
Novel Azomethine Pd(II) and VO(II) Based Metallo-Pharmaceuticals as Anticancer, Antimicrobial and Antioxidant agents: Design, Structural inspection, DFT investigation and DNA interaction
The new NO bi-dentate imine ligand namely (2-[(3-Nitro-benzylidene)-amino]-benzoic acid) (NBA) imine ligand (L) and their Pd(II) and VO(II) complexes have synthesized and characterized utilizing different physiochemical methods including elemental analyses, FT-IR, NMR, molar conductance and magnetic susceptibility measurements. The stability constant of these complexes has also determined. The studies of these complexes were found to have [M (L)] composition where ... Read more

Novel Di- and Tri-azomethine Compounds as Chemo Sensors for the Detection of Various Metal Ions

2019 | Keywords Spectroscopic titration, solvent effect, DFT Calculations, Azomethine, Chemosensors,
Novel Di- and Tri-azomethine Compounds as Chemo Sensors for the Detection of Various Metal Ions
In this study, HNA imine compound was synthesized by a simple one-pot condensation of 2-hydroxy-1-naphthaldhide with 2-amino benzoic acid in 1:1 ratio and HNAP imine compound derived from 2-hydroxynaphthaldhide and 3-amino pyridine. Results of the newly synthesized compounds established by elemental analyses, FT-IR, 1H-NMR, 13C-NMR and electronic spectral studies experiments were consistent with their chemical structures. The theoretical DFT calculations ... Read more

Catalytic potential of new mononuclear Cr(III)-Schiff base complexes for selective oxidation of benzyl alcohol by H2O2

2019 | Keywords Benzyl alcohol, H2O2, Schiff base complexes, catalytic oxidation,
Catalytic potential of new mononuclear Cr(III)-Schiff base complexes for selective oxidation of benzyl alcohol by H2O2
IN THE PRESENT CONTRIBUTION, SOME NOVEL CR(III) COMPLEXES WERE SYNTHESIZED FROM TRI- AND TETRA-DENTATE IMINE LIGANDS DERIVED FROM 3-ETHOXYSALICYLALDEHYDE OR 2-HYDROXYNAPHTHALDEHYDE WITH 2-AMINOPHENOL OR _O_-PHENYLENEDIAMINE. ALL THE PREPARED LIGANDS WERE AUTHENTICATED BY IR, 1H, 13C NMR SPECTRA AND CHN ANALYSIS. INTERACTION OF THE SYNTHESIZED LIGANDS WITH CHROMIUM NITRATE PRODUCED THREE NOVEL CR(III) COMPLEXES. THE STRUCTURE OF THE PREPARED CR(III) COMPLEXES ... Read more

Synthesis, catalysis, antimicrobial activity and DNA interactions of new Cu(II)-Schiff base complexes

2019 | Keywords copper (II), catalytic oxidation, biological activities, Benzyl alcohol, Amino acid Schiff bases,
Synthesis, catalysis, antimicrobial activity and DNA interactions of new Cu(II)-Schiff base complexes
Structural features and catalytic activities of five ternary copper (II)-Schiff base complexes are investigated. The ligands are derived from 3–methoxysalicylaldehyde (MS) or 4– diethylaminosalicylaldehyde (DS) and amino acids {L-phenylalanine (Phe), L histidine (His) or DL-tryptophan (Trp)}, as primary ligands, and 2,4’-bipyridyl (DP) as secondary ligand. Cu(II)- complexes are characterized by various physicochemical tools. The catalytic efficiency of Cu(II)-complexes is studied ... Read more

Design, Synthesis and Structural Inspection of Some Novel Di- And Tri-Azomethene Compounds as Chemo Sensors for the Detection of Various Metal Ions

2019 | Keywords Spectroscopic titration, solvent effect, DFT Calculations, Chemo-sensors, Azomethine,
Design, Synthesis and Structural Inspection of Some Novel Di- And Tri-Azomethene Compounds as Chemo Sensors for the Detection of Various Metal Ions
In this study, NBA imine compound was synthesized via an easy one-pot condensation of 3-nitro-benzaldyhide with 2-amino benzoic acid in 1:1 ratio and DAPH imine compound derived from 2,6-diacetyl pyridine and phenyl hydrazine hydrochloride. Consequences of the newly synthesized compounds hooked up with the aid of FT-IR, elemental analyses, 13C-NMR ,1H-NMR and digital spectral research. Experiments had been consistent with ... Read more

Fabrication, Spectroscopic Characterization, Calf thymus DNA Binding Investigation, Antioxidant and Anti-cancer Activities of Some Antibiotic Azomethine Cu(II), Pd(II), Zn(II) and Cr(III) Complexes

2019 | Keywords Azomethine, Pd (II), Cu(II) Complexes, DNA interaction, Antimicrobial activity, Antioxidant capacity, anticancer activity,
Fabrication, Spectroscopic Characterization, Calf thymus DNA Binding Investigation, Antioxidant and Anti-cancer Activities of Some Antibiotic Azomethine Cu(II), Pd(II), Zn(II) and Cr(III) Complexes
This study was conducted to prepare novel azomethine chelates of Cu(II), Pd(II), Zn(II) and Cr(III) with tri-dentate dianionic azomethine OVAP ligand 2-[(2-Hydroxy-phenylimino)-methyl]-6-methoxy-phenol. The prepared compounds were characterized with the help of elemental analyses, spectral (NMR, FT-IR, UV-vis, mass), conductivity, magnetic and thermal measurements. The spectroscopic data suggest that the parent azomethine ligand bind to the investigated metal ions through both ... Read more

Green synthesis of TiO2 nanoparticles as an efficient heterogeneous catalyst with high reusability for synthesis of 1,2-dihydroquinoline derivatives

2019 | Keywords non-chromatographic methods, 2- dihydroquinolines, 1, efficient catalyst , Neem leaf extract, TiO2 nanoparticles,
Green synthesis of TiO2 nanoparticles as an efficient heterogeneous catalyst with high reusability for synthesis of 1,2-dihydroquinoline derivatives
Nano materials find wide applications due to their behavior at nano scale. TiO2 nanoparticles (TiO2 NPs) was synthesized using Neem leaf extract. This is simple, rapid, eco-friendly, cheaper and green tools for TiO2 NPs synthesis using agricultural waste at lower applied temperature. Characterization of the extracted TiO2 NPs was confirmed by XRD, SEM, EDAX, TEM, HR-TEM, SAED, and FT-IR, respectively. ... Read more

Antimicrobial and anticancer activities of cobalt (III)-hydrazone complexes: Solubilities and chemical potentials of transfer in different organic co-solvent-water mixtures

2019 | Keywords Antimicrobial activity, anticancer activity, hydrazone, Transfer chemical potential,
Antimicrobial and anticancer activities of cobalt (III)-hydrazone complexes: Solubilities and chemical potentials of transfer in different organic co-solvent-water mixtures
The present study focused on the measurement of the solubilities and the calculation of the chemical potentials of transfer of Co(III)-hydrazone complexes in mixtures of water and ethyl alcohol (EtOH), isopropyl alcohol (_i_-PrOH), or _tert_-butyl alcohol (_t_-BuOH) at 298 K, using the assumption that dm mq Ph4As+ = dm mq BPh4- (TATB). A comparison between the chemical potentials of transfer ... Read more