Khaled Al Khalyfeh

Khaled Al Khalyfeh
Al-Hussein Bin Talal University | AHU · Department of Chemistry

Ph.D
Associate Professor in Inorganic Chemistry, Organometallics and Electrochemistry

About

13
Publications
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Citations
Introduction
Electron transfer application including sensors and charge storage martials.

Publications

Publications (13)
Article
The 1:2 reaction between Ln(NO3)3·6H2O (1) (Ln = Nd (a), Gd (b) or Tb (c)) and ((E)-ethyl 4-((2-hydroxybenzylidene)amino)benzoate) (LN,OH) in ethanol has provided access to the complexes [LnIII(LNH,O)2(NO3)3(H2O)] (2a−c) in good yield. The isomorphous structures of 2a−c have been determined by single-crystal X-ray crystallography. The LnIII ions in...
Article
A single-crystal X-ray diffraction investigation verified the chemical structure of (E)-ethyl-4-(5-bromo-2-hydroxybenzylidene amino)benzoate (1). Schiff base 1 crystallizes in the triclinic space group P1¯ with unit cell dimensions of a = 5.961(2), b = 7.499(3), c = 17.112(6) Å and unit cell angles of α = 95.565(12), β = 94.192 (13), γ = 104.689(13...
Article
Full-text available
The spectroscopic characterization (¹H, ¹³C{¹H} NMR, UV–Vis) and single-crystal X-ray diffraction (scXRD) analysis accomplished by inspection of the Hirshfeld surface of bis(3-thienoyl) disulfide (1) is described. The title compound 1 crystallizes in the monoclinic space group P21/n. The unit cell parameters are a = 7.9959(3) Å, b = 6.4348(3) Å, c...
Article
Treatment of 1,4-(SeSiMe3)2-C6H4 (1) with two equiv of ClC(O)R (2) (a, R = 2-cC4H3O; b, R = 2-cC4H3S; c, R = 3-cC4H3S) produced the corresponding phenylene carboselenolates 1,4-(SeC(O)R)2-C6H4 (3a–c), while the reaction of 1,4-(SLi)2-C6H4 (4) with ClC(O)R (2) in a 1:2 molar ratio gave phenylene carbothiolates 1,4-(SC(O)R)2-C6H4 (5a–c). Compounds 3a...
Article
Full-text available
UV−Vis spectroscopy is used to study the charge transfer complexes of thiacrown ethers 1−6 with fullerene. The size of TCE1-6 and the nature of the heteroatoms (N, O and S) have been systematically changed to examine the effect of these factors on the HOMO/LUMO energy levels, the optical energy gap and the interactions between TCE's and C60. The ne...
Article
Full-text available
DFT calculations have been applied to newly synthesized crown ethers derived from quinoline, 1-3. The thermodynamic parameters of all three crown ethers showed that strong interactions occurred with metal surfaces, such as Fe, Al and Cu. However, compound 1 was found to be the best green corrosion inhibitor of metals compared to the other compounds...
Article
Full-text available
The reaction of [Fe(η⁵-C5H4CH2OH)2] (1) with 2 equiv of ClC(O)R (2) (a, R = C6H5; b, R = 2-CH3-C6H4; c, R = 3-CH3-C6H4, d, R = 4-CH3-C6H4) produced the corresponding ferrocenyl carboxylates [Fe(η⁵-C5H4CH2OC(O)R)2] (3a–d). Treatment of [FcCH2OLi] (4-Li) (Fc = Fe(η⁵-C5H5)(η⁵-C5H4)) with (ClC(O))2C6H4 (5) (a, 1,2-((ClC(O))2-C6H4; b, 1,3-((ClC(O))2-C6H...
Article
Full-text available
In this study, geometry optimizations, orbital energies (HOMO-LUMO) and relative stabilities of methylene cyclopentane and 1-methylcyclopentene were investigated by DFT calculations. 1-methylcyclopentene was found to be more stable than methylene cyclopentane isomer with enthalpy value H = 18.518 kJ/mol. Also, the effect of substituents X (F, OH, C...
Article
Treatment of Fe(η⁵-C5H4CH2OH)2 (1) with two equivalents of ClC(O)R (2) (a, R = 2-cC4H3O; b, R = 2-cC4H3S; c, R = 2-cC4H3Se; d, R = 3-cC4H3S) produced the corresponding ferrocenylmethyl carboxylates Fe(η⁵-C5H4CH2OC(O)R)2 (3a–d), while the reaction of FcCH2OLi (Fc = Fe(η⁵-C5H5)(η⁵-C5H4)) with 2,5-(ClC(O))2-cC4H2X (5) (a, X = O; b, X = S; c, X = Se) i...
Article
Protocols for anionic polymerization of vinylferrocenes in bulk (b) and solution (s) are reported. Polymerization of vinylferrocenes bearing one or multiple (2e4) vinyl groups yielded linear polyvinylferrocene PVF-1(b, s) or cross-linked polyvinylferrocenes PVF-2 e PVF-4(b, s), respectively. Furthermore, copolymerization of mono-with multifunctiona...
Thesis
The present PhD thesis deals with the synthesis and characterization of functionalized ferrocenes with up to four aldehyde and vinyl groups and their usage as monomers to produce novel ferrocene-based oligomers with conjugated backbones via ADMET (acyclic diene metathesis) and HWE (Horner-Wadsworth-Emmons) reaction protocols. In addition, ferrocene...
Article
1,2-Divinylferrocene (1) and 1,2-diformylferrocene (3) have been converted to ferrocenyl-containing oligomers in good yields using ADMET (acyclic diene metathesis) and HWE (Horner–Wadsworth–Emmons) reaction protocols. The resulting oligomers showed a high uniformity (low dispersity values); however, the poor solubility limits the chain growth and l...
Article
Ferrocenes with up to four formyl functionalities have been synthesized by selective one- or two-fold ortho-lithiation of 1,1′-di(1,3-dioxan-2-yl)ferrocene followed by the reaction with dimethylformamide. Subsequent deprotection afforded tri- and tetraformyl-ferrocene in good yields. Wittig reactions convert the aldehydes to tri- and tetravinyl-fer...

Projects

Project (1)
Project
DFT-B3LYP calculations have been performed on natural products compound by using G09 and Spartan 14 programs for full optimization of geometries.