Zobrazeno 1 - 10 of 25 pro vyhledávání: '"Ahmed M. El-Defrawy"'
1
Spectroscopic, Voltammetric, DFT and Molecular Docking Studies of Copper (II) Complex of Carbothiohydrazide Derivative
Autor: Reem K. Shah, Marwa G. Elghalban, Ahmed M. El-Defrawy
Publikováno v: Oriental Journal Of Chemistry. 37:330-340
In this work, the nature of complexation between copper and N′,2-bis((E)-2-hydroxybenzylidene) hydrazine-1-carbothiohydrazide (a promising metal sensing Schiff base with a marked biological activity) (H4L) has been investigated and experimentally c
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::57bc6806bfaec050ed6c0064fcfdd1e2
https://doi.org/10.13005/ojc/370210
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3
Corrosion inhibition of zinc in sodium sulphate solution using nonionic surfactants of tween series: Experimental and theoretical study
Autor: Ahmed M. El Defrawy, A. A. El-Shafei, Tahani M. Bawazeer
Publikováno v: Colloids and Surfaces A: Physicochemical and Engineering Aspects. 520:694-700
The effects of three tween compounds have been tested as corrosion inhibitors of a zinc surface in 0.1 M of sodium sulphate (Na2SO4) using potentiodynamic, potentiostatic transient in addition to the Electrochemical Impedance Spectroscopy (EIS) metho
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::78c04d434e519b9348643f6f5a3cb2ac
https://doi.org/10.1016/j.colsurfa.2017.02.025
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5
Electrochemical and theoretical investigation for some pyrazolone derivatives as inhibitors for the corrosion of C-steel in 0.5 M hydrochloric acid
Autor: Metwally Abdallah, Jabir H. Al-Fahemi, Ahmed M. El Defrawy
Publikováno v: Journal of Molecular Liquids. 288:110994
Relative stabilities of the tautomers of three 3-methyl -1H-pyrozol-5(4H)-one derivatives were computationally investigated in gas-phase and in aqueous phase applying the Bpw91 level of theory with the 6-311G(d, p) basis sets. Pyrazolones derivatives
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4b94c7fe814b3b0df3f1532702f4a0c2
https://doi.org/10.1016/j.molliq.2019.110994
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6
Synthesis, Cytotoxicity Evaluation, DFT Molecular Modeling Studies and Quantitative Structure Activity Relationship of Novel 1,8-Naphthyridines
Autor: Sherihan A. El-Hadidy, Ahmed A. Fadda, Ahmed M. El Defrawy
Publikováno v: American Journal of Organic Chemistry. 2:87-96
A series of substituted 1,8-naphthyridine derivatives were synthesized from 4-oxo-1,4-dihydro-1,8- naphthyridine-3-carbohydrazide (4) as starting material and investigated as cytotoxic and antitumor agents. Compound 4 reacted with different acid anhy
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bc8b1480cf13d416145b169bf3bbbd20
https://doi.org/10.5923/j.ajoc.20120204.03
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7
Conformational Stability from Variable-Temperature Infrared Spectra of Xenon Solutions, r0 Structural Parameters, and Vibrational Assignment of Pyrrolidine
Autor: Ahmed M. El-Defrawy, Arindam Ganguly, Mamdouh S. Soliman, Savitha S. Panikar, James R. Durig
Publikováno v: The Journal of Physical Chemistry A. 115:7473-7483
The infrared spectra of gaseous and variable-temperature liquid xenon solutions of pyrrolidine have been recorded. The enthalpy difference has been determined to be 109 ± 11 cm(-1) (1.30 ± 0.13 kJ mol(-1)) with the envelope-equatorial conformer mor
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12e741ec9cd22c7d78bb983252d096b9
https://doi.org/10.1021/jp200692t
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8
Synthesis and Characterization of New Transition Metal Complexes of Schiff-base Derived from 2-Aminopyrimidine and 2,4-Dihydroxybenzaldehyde and Its Applications in Corrosion Inhibition
Autor: Sahar I. Mostafa, Abd El-Fatah M. Ouf, Mamdouh S. Soliman, Ahmed M. El-Defrawy, Mayada S. Ali
Publikováno v: Journal of the Korean Chemical Society. 54:402-410
New complexes cis-[Mo 2 O 5 (Hapdhba) 2 ], trans-[UO 2 (Hapdhba) 2 ], [Pd(Hapdhba)Cl(H 2 O)], [Pd(bpy)(Hapdhba)]Cl, [Ag(bpy)(Hapdhba)], [Ru(Hapdhba) 2 (H 2 O) 2 ], [Rh(Hapdhba) 2 Cl(H 2 O)] and [Au(Hapdhba)Cl 2 ] are reported, where H 2 apdhba is the
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::70a82f4afc934a8733767381c3962cdf
https://doi.org/10.5012/jkcs.2010.54.4.402
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9
Conformational stability, r0 structural parameters, ab initio calculations, and vibrational assignment for cyanocyclopentane
Autor: Gamil A. Guirgis, Rachel M. Ward, James R. Durig, Todor K. Gounev, Arindam Ganguly, Keegan G. Nelson, Ahmed M. El Defrawy, Mamdouh S. Soliman
Publikováno v: Vibrational Spectroscopy. 53:45-53
The infrared spectra (3200–400 cm −1 ) of the gas, xenon solutions, and solid and the Raman spectrum (3200–100 cm −1 ) of liquid cyanocyclopentane, c-C 5 H 9 CN, have been recorded. From infrared spectra of xenon solutions at 10 different tem
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::921b4e22475bf989866477596c920800
https://doi.org/10.1016/j.vibspec.2010.01.022
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10
Conformational Stability, r0 Structural Parameters, Ab Initio Calculations, and Vibrational Assignment for Fluorocyclopentane
Autor: James R. Durig, Arindam Ganguly, Todor K. Gounev, Ahmed M. El Defrawy, Gamil A. Guirgis
Publikováno v: The Journal of Physical Chemistry A. 113:9675-9683
The infrared spectra (3200-50 cm(-1)) of the gas and solid and the Raman spectrum (3200-30 cm(-1)) of liquid and solid fluorocyclopentane, c-C5H9F, have been recorded. Additionally the infrared spectra (3200-400 cm(-1)) of liquid xenon solutions have
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::957c003782d725b5b7fcf56fe927d9bc
https://doi.org/10.1021/jp902521e
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