Mohamed Shaker S. Adam, Kamal A. Soliman, Hany M. Abd El‐Lateef,
• VO 2+ and Ni 2+ complexes were synthesized and fully characterized. • Ligand, VO 2+ and Ni 2+ complexes have an inhibition effect on M-steel in CO 2 -saturated brine. • Both complexes are effective catalysts for 1,2-cyclohexene (ep)oxidation and Suzuki-Miyaura reactions. • Theoretical results were convenient with the obtained catalytic and corrosion inhibition progresses. VO 2+ and Ni 2+ complexes (VOPHL and NiPHL) were prepared by complexation of terephthaloyl salicylidene dihydrazone (H 2 PHL) with VO 2+ ...
Tópico(s): Oxidative Organic Chemistry Reactions
2019 - Elsevier BV | Inorganica Chimica Acta
Saied M. Soliman, Mohamed Hagar, Farahate Ibid, El Sayed H. El Ashry,
The hybrid 3-(4-chlorophenyl)-2-[(5-thioxo-4,5-dihydro-1,3,4-oxadiazol-2-yl)methylthio]quinazolin-4(3H)-one has been synthesized and characterized using elemental analysis, FTIR and NMR spectroscopy. The thione–thiol tautomeric equilibria has been studied using both DFT/B3LYP and HF methods at different basis sets. The results of calculations showed predominance of the thione form. The molecular structure and vibrational spectra of the stable tautomer are predicted using the same level of theory. ...
Tópico(s): Nonlinear Optical Materials Research
2015 - Elsevier BV | Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy
Imran Ali, Sahar S. El-Sakka, Mohamed H. A. Soliman, Omayma El-Sayed Abdel-Basset Mohamed,
The new quinoline derivatives: 2-oxo-1,2-dihydroquinoline-4-carbohydrazide (1), 2-(allyloxy) quinoline-4-carbohydrizde (2), 1-allyl-2-oxo-1,2-dihydroquinoline-4-carbohydrazid (3) and 2-(allyl-thio)quinoline-4-carbohydrazide (4) and their Cu(II), Ni(II) and Co(II) complexes were synthesized and characterized by using elemental analysis (CHNM%), FTIR, UV/Vis, 1H NMR, 13C NMR spectra, DTA, TGA, magnetic susceptibility and the conductivity of 0.001 M in DMSO. The obtained results revealed the formation of ...
Tópico(s): Synthesis and Characterization of Heterocyclic Compounds
2019 - Elsevier BV | Journal of Molecular Structure
Assem Barakat, Hany J. Al-Najjar, Abdullah Mohammed Al‐Majid, Saied M. Soliman, Yahia N. Mabkhot, Mohamed H. Al‐Agamy, Hazem A. Ghabbour, Hoong‐Kun Fun,
A variety of 2-thioxothiazolidin-4-one derivatives were prepared and their in vitro antimicrobial activities were studied. Most of these compounds showed significant antibacterial activity specifically against Gram-positive bacteria, among which compounds 4a,e,g, 5b,e,g,h and 6f exhibit high levels of antimicrobial activity against Bacillus subtilis ATCC 10400 with Minimum Inhibitory Concentration (MIC) value of 16 μg/mL. All compounds have antifungal activity against Candida albicans. Unfortunately, ...
Tópico(s): Structural and Chemical Analysis of Organic and Inorganic Compounds
2014 - Elsevier BV | Journal of Molecular Structure
Mohamed Hagar, Saied M. Soliman, Farahate Ibid, El Sayed H. El Ashry,
Four new acetylhydrazone derivatives of quinazoline have been synthesized and characterized. The molecular structures and relative stabilities of four possible isomers for each acetylhydrazone are calculated using DFT/B3LYP/6-31G(d,p) method. The calculations results predicted higher stability of the E-isomers compared to the Z-isomers in the gas phase. The syn-E isomer is the predominant form in gaseous phase for all the studied hydrazones except for the hydrazone derived from salicylaldehyde where ...
Tópico(s): Synthesis and Characterization of Heterocyclic Compounds
2013 - Elsevier BV | Journal of Molecular Structure
Mustafa S. Abd El-Zahir, Mohamed H. A. Soliman, Hamdy A. El-Kady, Sahar S. El-Sakka, Adel S. Orabi,
Abstract To overcome the threat of corrosion and its cost, a new Schiff base was prepared and utilized to synthesize inorganic inhibitors to enhance corrosion resistance and reduce current density. The Schiff base was obtained from the interaction of cefotaxime with acetylacetone, while 1 H NMR and IR spectra were used to confirm the preparation. Moreover, Fe III , Co II , Ni II and Cu II metal salts were reacted with the Schiff base to give the corresponding complexes. Meanwhile, the non-ionic behavior ...
Tópico(s): Hydrogen embrittlement and corrosion behaviors in metals
2024 - Nature Portfolio | Scientific Reports
Mohamed M. Fadlallah, Ahmed A. Maarouf, Kamal A. Soliman,
Many sensing applications depend on molecular adsorption on surfaces. Nanostructured materials have been the focus of many research efforts aimed at developing sensors for toxic gases. In this work, we study the adsorption of NO2 and SO2 molecules on boron nitride nanocones (BNNCs), using first principles calculations. Aluminum doping of BNNCs (Al–BNNCs) significantly increases the adsorption at the apex of the cone, with a minor change upon inclusion of the van der Waals interactions. Adsorption ...
Tópico(s): Boron and Carbon Nanomaterials Research
2019 - Elsevier BV | Physica E Low-dimensional Systems and Nanostructures
Ali A. Al‐allaq, Jenan S. Kashan, Mohamed T. El-Wakad, Ahmed M. Soliman,
The objective of this study is to demonstrate how the effect of adding multi-walled carbon nanotubes (MWCNTs) nanoparticles to the (Hydroxyapatite /High-density polyethylene) bio-composites. In this investigation, the samples with various percentages of (MWCNTs) were fabricated by a hot-press technique. The morphological characteristics, roughness of the surface and thermal properties of the bio-composite samples (HA/HDPE/MWCNTs) were investigated. The excellent homo-geneous distribution of the internal ...
Tópico(s): Orthopaedic implants and arthroplasty
2022 - | Materiale Plastice
Eman A. Ghiaty, Dalia E. Mohamed, Emad A. Badr, E. A. M. Gad, E. A. SOLIMAN, I. Aiad,
Abstract Most research interests focused on the development of non-toxic and environmentally green corrosion inhibitors. In this work, three environment friendly corrosion inhibitors based on cinnamaldehyde named N,N-dimethyl-N-(2-((3-phenylallylidene) amino)ethyl)octan-1-aminiumbromide (PhAEO), N,N-dimethyl-N-(2-((3-phenyl allylidene) amino)ethyl)decan-1-aminiumbromide (PhAED) and N,N-dimethyl-N-(2- ((3-phenylallylidene)amino)ethyl)dodecan-1-aminiumbromide (PhAEDD) were prepared. The chemical structures ...
Tópico(s): Inorganic and Organometallic Chemistry
2020 - De Gruyter | Tenside Surfactants Detergents