Synthesis and characterization of new quinoxaline d erivatives of 8- hydroxyquinoline as corrosion inhibitors for mild s teel in 1.0 M HCl medium

Rbaa, Mohamed; Galai, M.; Faydy, M. El; Lakhrissi, Younes; EbnTouhami, M.; Zarrouk, A.; Lakhrissi, B.

doi:10.26872/jmes.2018.9.1.21

Cited by 14 publications

(11 citation statements)

References 54 publications

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“…The corrosion rate of AISI steel at same conditions with presence inhibitor at 0.01-0.05 M was measured. Inhibition efficiency and surface coverage (Ө) were calculated through the following Equations (Hegde and Nayak,2018;Rbaa et al, 2018).…”

Section: Weight Loss Method:-mentioning

confidence: 99%

Gemini Surfactant Performance Evaluation as Inhibitive action of PAPM for Treatment of AISI steel Corrosion and Studying Temperatures Influence in Acidic Medium

2019

University of Thi-Qar Journal of Science

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To inhibit corrosion of the AISI 4130 steel in 1M H 2 SO 4 solution at different temperatures, the gemini surfactant was used, namely N,N'-((1,4-phenylenebis(azanediyl)) bis (2-hydroxy propane-3,1-diyl)) bis (N,Ndimethyldecan-1-aminium) (PAPM). The gemini surfactant by electrochemical impedance spectroscopy technique and weight loss method has been evaluated at different temperatures 30, 40 and 50°C. The gemini surfactant showed a very good performance as a corrosion inhibitor in acidic solution, and inhibition efficiency increases with increase inhibitor concentration but decreased with increasing temperatures. Impedance technique results shown, that studied molecule act as mixed-type inhibitor toward AISI steel, also values of standard free energy of adsorption suggest the physisorption and chemisorption were occurred for inhibitor molecules on AISI surface. In addition, the inhibitor adsorption behavior on the AISI surface was investigated at specified temperatures and it coincide with Langmuir's adsorption isotherm. Furthermore, time effect on corrosion inhibition efficiency was studied where results shown that influence was slight. From quantum calculations, the inhibitor act as soft molecule were noted, also it was shown that the inhibitor more responding for reacting with the AISI surface and prefer the electrophilic attack because it contains on a nucleophilic centers. Experimental inhibition efficiency obtained from both two methods are on a good agreement to each other where optimum efficiency reached 90.32% for weight loss method and 87.17% for EIS technique. On other hand, theoretical inhibition efficiency and experimental inhibition efficiency were in a good agreement to each other, where as theoretical efficiency reached 92.35%.

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Section: Weight Loss Method:-mentioning

confidence: 99%

Gemini Surfactant Performance Evaluation as Inhibitive action of PAPM for Treatment of AISI steel Corrosion and Studying Temperatures Influence in Acidic Medium

2019

University of Thi-Qar Journal of Science

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“…Organic synthesis is a major tool for the formation of new biologically active molecules, in particular heterocyclic molecules (Rbaa et al, 2018). 8-Hydroxyquinoline is an important heterocyclic nucleus, thanks to its structure which presents various nucleophilic and electrophilic reactive sites that allow the synthesis of new heterocyclic derivatives.…”

Section: Structure Descriptionmentioning

confidence: 99%

“…8-Hydroxyquinoline is an important heterocyclic nucleus, thanks to its structure which presents various nucleophilic and electrophilic reactive sites that allow the synthesis of new heterocyclic derivatives. Following our interest in 8-quinolinol-based biological and anti-corrosion inhibitor compounds (El Faydy et al,2016;Rbaa et al 2017), we have synthesized the title compound by reaction of 5-chloromethylquinoline-8-ol hydrochloride with thioethanol in the presence of triethylamine in pure tetrahydrofuran as a solvent.…”

Section: Structure Descriptionmentioning

confidence: 99%

5-{[(2-Hydroxyethyl)sulfanyl]methyl}quinolin-8-ol

et al. 2019

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“…[ 1 ] In the past few years, chemists have shown much interest in the synthesis and physicochemical study of row transition metal complexes with a number of azo dye ligands. [ 4–6 ] Azo dyes readily form stable complexes with most of the transition metals that play an important role in the development of coordination chemistry. [ 7–9 ] Azo dyes are widely used in various fields of science and technology, and they serve as a class of widely used coloring materials.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, and biological investigation of new mixed‐ligand complexes

Amin

Abou‐Dobara

Diab

et al. 2020

Applied Organom Chemis

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A novel series of mixed-ligand complexes of 5,5 0-{(1E,1E 0)-1,4-phenelynebis (diazene-2,1-diyl)}bis(quinolin-8-ol) (H 2 L 1) as a primary ligand and 4-aminoantipyrine(L 2) as a secondary ligand with Mn(II) ion were prepared using two general formulae: [Mn 2 (H 2 L 1) 2 (L 2) 2 X 4 ].4Cl (X = OH 2 (1), ONO 2 − (2), Cl=nil; OAc(3), Cl = nil) and [Mn 2 (H 2 L 1)(L 2) 2 (O 2 SO 2) 2 ](4). Free ligands and their complexes were characterized. Electronic absorption spectra of the mixed-ligand complexes indicate a distorted octahedral geometry around the central metal ion, and the anions X − are in the axial positions for all compounds. The ligands behave in a neutral bidentate manner, through nitrogen atoms and oxygen atoms of the carbonyl group (L 2), whereas H 2 L 1 coordinated through nitrogen and OH groups as a neutral bidentate ligand. All complexes do not contain coordinated water molecules, but complex (1) contains four water molecules. The water molecules are removed in a single step. The complexes exhibited magnetic susceptibility corresponding to five unpaired electrons. The antimicrobial activity of the Mn(II) mixed-ligand complexes (1-4) against two gram-positive bacteria, three local gram-negative bacteria, and three fungi species was tested. Mn(II) mixed-ligand complex (2) exhibited significant antibacterial activity against Bacillus cereus, Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae, and Pseudomonas sp. Mixed-ligand complex (2) exhibited a high potential cytotoxicity against the growth of human lung cancer cells. K E Y W O R D S antimicrobial activity, azo compound, bacterial ultrastructure, 4-aminoantipyrine, ligand field parameters, mixed-ligand 1 | INTRODUCTION Pyrazole derivatives are important classes of compounds in organic chemistry. Many of them possess antimicrobial, antifungal, anti-inflammatory, and anticancerous properties. One of the important pyrazole derivatives is 4-aminoantipyrine whose structural units play a vital role in medicine and agricultural chemistry. [1-3] 4-Aminoantipyrine and its complexes have a variety of applications in analytical, biological, and pharmacological fields. [1] In the past few years, chemists have shown much interest in the synthesis and physicochemical study of row transition metal complexes with a number of azo dye ligands. [4-6] Azo dyes readily form stable complexes

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Synthesis and characterization of new quinoxaline d erivatives of 8- hydroxyquinoline as corrosion inhibitors for mild s teel in 1.0 M HCl medium

Cited by 14 publications

References 54 publications

Gemini Surfactant Performance Evaluation as Inhibitive action of PAPM for Treatment of AISI steel Corrosion and Studying Temperatures Influence in Acidic Medium

Gemini Surfactant Performance Evaluation as Inhibitive action of PAPM for Treatment of AISI steel Corrosion and Studying Temperatures Influence in Acidic Medium

5-{[(2-Hydroxyethyl)sulfanyl]methyl}quinolin-8-ol

Synthesis, characterization, and biological investigation of new mixed‐ligand complexes

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