Chalcone A Natural Corrosion Inhibitor and Its Role in Promoting Sustainable Development Rajaa Salah Raisan, Mahdi Salih Shihab Iop Conference Series Earth and Environmental Science, 2025 Chalcone is a naturally occurring chemical molecule with antioxidant and anti-inflammatory qualities and a member of the flavonoid family.Recent studies showed the effectiveness of the chalcone in resisting physical and chemical corrosion, as it forms a protective layer that prevents environmental factors that cause corrosion. This article will discuss the use of several methods to prepare chalcone, including natural extraction and laboratory preparation, as well as green synthesis methods to achieve greater environmental sustainability. Highlighting the improvement of metal surface properties and inhibition of electrochemical reactions due to its effective role in the corrosion process, exploring its most important industrial applications such as the protection of pipelines and marine structures. Chalcone is a promising solution to reduce industrial corrosion in environmentally friendly ways.
Synthesis, Design, and Biological Activity of Sustainable Chalcone Derivatives Rajaa Salah Raisan, Mahdi Salih Shihab Iop Conference Series Earth and Environmental Science, 2025 The wide interest in chalcone in recent years and its general impact on all industrial and biological applications has made it a source of interest in several studies, including its wide impact on sustainable development due to its effective chemical structure of the alkene group successively with the carbonyl group in addition to the presence of two aromatic rings. In this study, four chalcone compounds derived from pyridine were prepared by the Claisen condensation reaction. The samples were characterized by FTIR spectroscopy and their physical properties were studied. After preparing the samples, their biological activity as antibacterial agents against Gram-negative bacteria such as E-Coli and Gram-positive bacteria such as Staphylococcus aureus was studied. It was noted that their effect was moderate on bacteria. The samples were tested as antifungal agents using Candida albicans and it was pointed out that their impact was greater on fungi in general and compound R3 in particular because it gave good results compared to the rest of the compounds.
Synthesis of Some Carboxylate Tetraethylammonium Salts as Ionic Liquids Muna Raad Mahmood, Mehdi Salih Shihab, and Al Nahrain Journal of Science, 2023 Some of organic ammonium salts, namely: 2-((4-carboxyphenyl) carbamoyl) benzoate tetraethylammonium, B1, 4-oxo-4-(pyridin-3-ylamino)-2-butenoate tetraethylammonium, B2, 2-((4-carbamoylphenyl) carbamoyl) benzoate tetraethylammonium, B3, 4-((4-carbamoylphenyl)amino)-4-oxobutanoate tetraethylammonium, B4, are successfully synthesized as ionic liquids. By spectral techniques of FTIR, 1H-NMR and 13C-NMR the structures of organic salts are confirmed. The thermal analysis by differential scanning calorimetry (DSC) has shown the thermal stability of the organic ammonium salts (B1-B4). A high conductivity characteristic as compared with that of NaCl has been detected in the aqueous solution.
Synthesis New Triethylammonium Salts as Corrosion Inhibitors for Mild Steel in 1 M H2SO2 Mariam S. Muhsin, Mehdi S. Shihab, and Al Nahrain Journal of Science, 2023 Somenewtriethylammoniumsalts,namelytriethylammonium4-(cyclohexyl-amino)-4-oxobut-2-enoate(B1),triethylammonium5-(cyclohexylamino)-5-oxopentanoate(B2),triethylammonium4-(cyclohexylamino)-4-oxobutanoate(B3)weresynthesizedasacorrosioninhibitorformildsteel.Thesesaltscouldtestinonemolaritysulfuricacidatroomtemperaturefor24hoursbyusingweightoflosingmethod.Theresultsrevealedthattheefficiencyofinhibitionofalltriethylammoniumsaltswerehighatthemaximumconcentrationoftriethylammoniumsalt.Theincreaseconcentrationofinhibitorsisassociatedwithdecreasingtherateofcorrosion,buttheincreasingofefficienciesofinhibition,andagreaterdegreeofsurfacecovering.Adsorptionvaluesofthefreeenergywereusedtoillustratetheeffectsofphysisorptionfor(B1,B2,andB3),whichwashelpfulinforecastingthenaturalinteractionbetweenorganiccorrosioninhibitormoleculesandthemetalsurfaceofsteel.
Formation, spectral and theoretical studies of 1-(4,4-dimethyl-2,6- dithioxo-1,3,5-triazinan-1-yl)-3-(diethylaminocarbonyl)thiourea Journal of Global Pharma Technology, 2018
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Solvent effect on the volume of activation and volume of the Diels–Alder reaction VD Kiselev, AI Konovalov, T Asano, EA Kashaeva, GG Iskhakova, ... Journal of Physical Organic Chemistry 14 (9), 636-643 , 2001 2001 Citations: 49
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Effects of carbon nanotubes on the physical properties of a nematic liquid crystal N-(4′-methoxybenzylidene)-4-butylaniline NR Jber, AA Rashad, MS Shihab Journal of Molecular Structure 1043, 28-36 , 2013 2013 Citations: 29
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