ibrabbas7

Prof. Dr. Ibrahim A. Abbas

Professor - Department of Mathematics

Faculty of science

Address: Sohag University, Egypt.

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Publications Which contain the keyword: Antimicrobial 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

Synthesis and Characterization of New Cr(III), Fe(III) and Cu(II) Complexes Incorporating Multi-Substituted Aryl Imidazole Ligand: Structural, DFT, DNA Binding, and Biological Implications
Designing new metal-based molecular antibiotics is an efficient approach to overcome the growing threat of antimicrobial resistance. In this paper, novel Cr(III), Fe(III) and Cu(II) complexes comprising substituted aryl imidazole ligand (MSEB), namely (2-(1-(2-hydroxyethyl)-4,5-diphenyl-1H-imidazole-2-yl)(4-bromophenol)) have been synthesized and characterized using infra-red (IR), ultraviolet-visible (UV-Vis) and 1H, 13C NMR spectroscopic techniques, together with elemental (CHN) and thermogravimetric analyses, molar conductance, and ... Read more

A robust in vitro Anticancerc, Antioxidant and Antimicrobial Agents Based on New Metal-Azomethine Chelates Incorporating Ag(I),  VO(II)  and Pd(II) Cations: Probing the Aspects of DNA Interaction
A novel azomethine ligand (HNAP) [HNAP = 1-(Pyridin-3-yliminomethyl)-naphthalen-2-ol] and its Ag(I), Pd(II) and VO(II) chelates have been synthesized and structurally inspected using a wide range of spectroscopic and analytical tools, including infra-red (IR), ultraviolet-visible (UV-Vis) and 1H NMR spectroscopy techniques, CHN analysis, molar conductance, magnetic susceptibility, and thermogravimetric analysis. The molar conductance measurements reveal that the chelates are non-electrolytes. The ... Read more

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

Design, Synthesis, anticancer activity and molecular docking studies on a series of VO(II), Cr (III), Mn(II) and Ni(II) Mononuclear Chelates incorporating Quaridentate imine ligand as antitubulin agents
The present study was conducted to synthesis of some new imine Cr(III), VO(II), Mn(II) and Ni(II) complexes derived from the condensation of 2-amino phenol with 2-hydroxynapthaldehyde were synthesized. The prepared HNPN imine ligand was analyzed by its melting point, IR, 1H NMR and 13C NMR spectroscopies. The investigated HNPN imine complexes were characterized by elemental analysis, FT IR, Uv-vis and ... Read more

Synthesis, Characterization and Biological Studies of Some new Cr(III), Fe(III) and Cu(II) Complexes based on Multi-Substituted  Aryl Imidazole ligand
New Cr (III), Fe (III) and Cu (II) complexes with MSBB (2‐(1‐butyl‐4,5 diphenyl‐1H‐imidazol‐2‐yl)(4-bromophenol) were synthesized. The multi-substituted aryl imidazole ligand (MSBB) and its complexes were characterized by using elemental and thermal analysis, molar conductivity, magnetic susceptibility, UV-Vis spectral data, IR, and NMR. The obtained data showed that prepared complexes were 1 :1 (metal : ligand) ratio, octahedral (Oh) for all ... Read more

New palladium (II) and silver (I) Schiff base complexes Promising antibiotic and anticancer agents
Some new complexes derived from Ag (I) and Pd(II) metal ions and HNA imine ligand (L) _i.e. _(2-[(6-Allylidene-2-hydroxy-cyclohexa-1,3-dienylmethylene)-amino]-benzoic acid) have been synthesized and characterized by elemental analyses, molar conductance, magnetic susceptibility measurements, IR, NMR and electronic spectral studies. Moreover, the stability constants of the synthesized complexes were determined spectrophotometrically. On the basis of molar conductance and elemental analyses the complexes ... Read more

Synthesis, characterization, DNA cleavage and antimicrobial activity of Schiff base transition metal complexes containing heterocyclic ligand
SOME NOVEL SCHIFF BASE METAL COMPLEXES OF CU(II), CO(II), NI(II) AND FE(II) DERIVED FROM 2-AMINO-3-HYDROXYPYRIDINE AND 4-NITROBENZALDEHYDE WERE SYNTHESIZED. THESE COMPOUNDS WERE CHARACTERIZED BY ELEMENTAL ANALYSIS, MOLAR CONDUCTANCE, MAGNETIC SUSCEPTIBILITY, THERMAL MEASUREMENTS, INFRARED AND ULTRAVIOLET–VISIBLE SPECTRA. THE SCHIFF BASE AND METAL COMPLEXES DISPLAYED GOOD ACTIVITY (AGAINST THE BACTERIA, _ESCHERICHIA COLI,__SERRATIA MARCESCENCE_AND_MICROCCUS LUTEUS_, AND THE FUNGI _ASPERGILLUS FLAVUS_, _GETRICHM CANDIDUM _AND ... Read more

Design, Synthesis, Characterization and biological application of some new Schiff Base Cu(II), Pd(II) and Ag(I) Complexes
In this investigation, new Cu(II), Pd(II) and Ag(I) complexes with the tetra-dentate DSPH Schiff base ligand were synthesized. The DSPH Schiff base and its complexes were characterized by using different physicochemical and spectral analysis. The results revealed that the metal ions coordinated with DSPH ligand through azomethine nitrogen and phenolic oxygen. Cu(II), Pd(II) and Ag(I) complexes are present in a ... Read more

DNA Interaction, Antimicrobial, Anticancer Activities and Molecular Docking Study of Some New VO(II), Cr (III), Mn(II) and Ni(II) Mononuclear Chelates encompassing Quaridentate imine ligand,
DNA Interaction, Antimicrobial, Anticancer Activities and Molecular Docking Study of Some New VO(II), Cr (III), Mn(II) and Ni(II) Mononuclear Chelates encompassing Quaridentate imine ligand, Read more