On February 15, 2022, Paul, Priya Kumari; Mehta, Raj Kumar; Yadav, Mahendra; Obot, I. B. published an article.Safety of 2-((1H-Indol-3-yl)methylene)malononitrile The title of the article was Theoretical, electrochemical and computational inspection for anti-corrosion activity of triazepine derivatives on mild steel in HCl medium. And the article contained the following:
The two triazepine derivatives, 2-amino-9-(1H-indol-3-yl)-4-(4-methoxyphenyl)-7-oxo-1,7-dihydropyrido[1,2-b][1,2,4]triazepine-3,8,10-tricarbonitrile [AITT] and Et 2-amino-8,10-dicyano-9-(2-hydroxy-3-methoxyphenyl)-4-(4-methoxyphenyl)-7-oxo-1,7-dihydropyrido [1,2 -b][1,2,4]triazepine-3-carboxylate [EHTC] were successfully synthesized and demonstrated as corrosion inhibitor for mild steel in 15% HCl medium. Their auspicious inhibiting performance was measured by weight loss measurement and the electrochem. impedance spectroscopic method. The adsorption of inhibitors chem. or phys. on the exposed metal surface is the main key factor behind the protection mechanism. The investigation at an optimum concentration of 200 ppm (303 K) showed the inhibitor AITT and EHTC with 96.88% and 95.56% inhibition efficiency. The functional groups attached to inhibitor AITT encourages the electron d. over the whole mol. and makes it more efficient as a corrosion inhibitor than EHTC. The minimization of cathodic as well as anodic reactions from the potentiodynamic polarization method reveals the inhibitors as mixed-type inhibitors which is also supported by the computed free energy of adsorption values from best fitted Langmuir Adsorption isotherm. The extreme improvement in damaged surface (inhibitor-free medium) was found on the application of inhibitors which is characterized by the surface topog. analyses FESEM and AFM. The elemental anal. of the inhibited metal surface was executed by XPS anal. The computational methods as Monte-Carlo Simulation, DFT and Fukui calculations, were also employed for the justification of outcomes from exptl. methods. All the observations were mutually supported. The experimental process involved the reaction of 2-((1H-Indol-3-yl)methylene)malononitrile(cas: 75629-62-8).Safety of 2-((1H-Indol-3-yl)methylene)malononitrile
The Article related to triazepine derivative synthesis mild steel anti corrosion evaluation, Placeholder for records without volume info and other aspects.Safety of 2-((1H-Indol-3-yl)methylene)malononitrile
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts