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

320

Like
20 103 262 149 5 107 7.8K 30.9K
275

Newly Added
  • Courses 20
  • Course Supplements 103
  • Courses Tasks 262
  • Publications 149
  • Office hours 5
  • Announcements 107
  • File uploaded 135
  • Downloaded Times 1203

Publications Which contain the keyword: NMR

Some new nano-sized Cr(III), Fe(II), Co(II), and Ni(II) complexes: Structural characterization, electrochemical, antioxidant, antimicrobial, antiviral assessment and DNA interaction

2018-09-11 14:49:30 Keywords NMR, TGA, IR, DNA interaction, Antiviral activity, Antimicrobial activity, Cyclic voltammetry, Nano-sized complexes, Antioxidant activity, CT-DNA,
Some new nano-sized Cr(III), Fe(II), Co(II), and Ni(II) complexes: Structural characterization, electrochemical, antioxidant, antimicrobial, antiviral assessment and DNA interaction
To estimate the biological preference of synthetic small drugs towards DNA target, new metal based chemotherapeutic agents of nano-sized Cr(III), Fe(II), Co(II) and Ni(II) Schiff base complexes having N,N,O donor system were synthesized and thoroughly characterized by physic-chemical techniques. The redox behavior of the Cr(III), Fe(II) and Co(II) complex was investigated by electrochemical method using cyclic voltammetry. IR results proven ... Read more

Investigation of adsorption and inhibition effects of some novel anil compounds towards mild steel in H2SO4 solution: Electrochemical and theoretical quantum studies

2018-09-11 15:42:36 Keywords Jop's method, NMR, Anil compounds, Electrochemical study, Theoretical quantum calculatio, X-ray crystallography, Corrosion inhibition, Mild steel, SEM, IR,
Investigation of adsorption and inhibition effects of some novel anil compounds towards mild steel in H2SO4 solution: Electrochemical and theoretical quantum studies
A novel anil compounds, 1-{(_Z_)-[(3,5dimethylphenyl)imino]methyl}naphthalen-2-ol (HNMA) and 5- (diethylamino) -2- {(_Z_)- [(3,5-dimethylphenyl)imino] methyl} phenol (DMSMA), were prepared and characterized on the basis of elemental analyses, X-ray, 1H NMR, 13C NMR, UV–Vis and IR spectral data. Their inhibiting performance for mild steel in 0.5 M H2SO4solution was evaluated by a series of techniques including potentiodynamic polarization, electrochemical impedance spectroscopy, scanning electronic ... Read more

Corrosion inhibition of carbon steel pipelines by some novel Schiff base compounds during acidizing treatment of oil wells studied by electrochemical and quantum chemical methods

2018-09-11 12:23:27 Keywords Carbon steel alloy, Corrosion inhibition, Schiff base compounds, EIS, SEM, Quantum chemical calculations, IR, NMR,
Corrosion inhibition of carbon steel pipelines by some novel Schiff base compounds during acidizing treatment of oil wells studied by electrochemical and quantum chemical methods
Three novel Schiff bases compounds were prepared and their structures were characterized by X-ray, 13C-NMR, 1H-NMR, mass, UV–Vis, FT-IR, spectral data and elemental analyses. The corrosion inhibition of the investigated inhibitors towards carbon steel in 15% HCl was investigated by using electrochemical measurements (EIS, LPR corrosion rate and Tafel plots), SEM, EDX and quantum chemical methods. The results showed that, ... Read more

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

2018-09-11 14:54:26 Keywords TOF, TON, IR, TGA, Hydrogen peroxide, Catalytic activity, Density Functional Theory, Benzyl alcohol, TEM, Cu(II) Schiff base complexes, NMR,
Some New Nano-sized Mononuclear Cu(II) Schiff Base Complexes: Design, Characterization, Molecular Modeling and Catalytic Potentials in Benzyl Alcohol Oxidation
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. ... Read more

Sonochemical synthesis, DNA binding, antimicrobial evaluation and in vitro anticancer activity of nano-sized Cu(II), Co(II) and Ni(II) chelates as precursors for metal oxides

2018-09-11 14:15:14 Keywords sonochemistry, Synthesis, thermal analyses, Antimicrobial activity, DNA interaction, Cytotoxic activity, nanoparticles, IR, NMR, TGA,
Sonochemical synthesis, DNA binding, antimicrobial evaluation and in vitro anticancer activity of nano-sized Cu(II), Co(II) and Ni(II) chelates as precursors for metal oxides
Three new nano sized Cu(II), Co(II) and Ni(II) complexes of imine ligand derived from the condensation of 2-amino-3-hydroxypyridine and 3-methoxysalicylaldehyde have been prepared and investigated using various chemical techniques such as NMR, elemental analysis, molar conductance, IR, electronic spectra, TGA and magnetic momentmeasurements. The obtained chemical analysis data showed that the synthesis of 1:1 (metal:ligand) ratio and octahedral geometry was ... Read more

Development, structural investigation, DNA binding, antimicrobial screening and anticancer activities of two novel quari-dentate VO(II) and Mn (II) mononuclear complexes

2018-09-06 07:45:01 Keywords imines, Structural elucidation, Antimicrobial, Screening, DNA binding, Anticancer efficiency, IR, NMR, TGA,
Development, structural investigation, DNA binding, antimicrobial screening and anticancer activities of two novel quari-dentate VO(II) and Mn (II) mononuclear complexes
Two novel VO(II) and Mn(II) imine chelates derived from the condensation of o-phenylenediamine (PN) with 3-ethoxysalicylaldehyde(ES) were synthesized. The prepared ESPN imine ligand and its chelates were investigated _via_ different analytical and physicochemical tools. Correlation between all the obtained results, the parent ligand behaves as tetra-dentate ONNO ligand and coordinates to Mn(II) and VO(II), in octahedral and square pyramidal geometry, ... Read more

Ni(II) and Cu(II) complexes : synthesis, spectroscopic characterization, theoretical calculations, DNA interaction and antimicrobial studies

2018-09-11 12:36:23 Keywords electrophoresis, DNA interaction, TGA, DFT studies, asymmetric Schiff base ligand, IR, NMR, Antimicrobial activity,
Ni(II) and Cu(II) complexes : synthesis, spectroscopic characterization, theoretical calculations, DNA interaction and antimicrobial studies
A novel Schiff base, namely _Z_‐3‐((2‐((_E_)‐(2‐hydroxynaphthyl)methylene)amino)‐5‐nitrophenylimino)‐1,3‐dihydroindin‐2‐one, was synthesized from the condensation of 2‐hydroxy‐1‐naphthaldehyde and isatin with 4‐nitro‐_o_‐phenylenediamine. It was structurally characterized on the basis of 1H NMR, 13C NMR and infrared spectra and elemental analyses. In addition, Ni(II) and Cu(II) complexes of the Schiff base ligand were prepared. The nature of bonding and the stereochemistry of the investigated complexes were ... Read more