Author/Authors :
assad, noora al-nahrain university - college of science - department of chemistry, Baghdad, Iraq , abdul-hameed, fatma al-nahrain university - college of science - department of chemistry, Babylon, Iraq , balakit, asim university of babylon - college of pharmacy, Babylon, Iraq , yousif, emad ai-nahrain university - college of science - department of chemistry, Baghdad, IRAQ
Abstract :
N-[(3-Bromo-2-methylthiophen-5-yl)methylene]-4-methoxyaniline) (5) has been synthesized and used as corrosion inhibitor for zinc metal in 2 M HCl at room temperature by using weight loss measurements. The obtained results showed that (5) is a good inhibitor and its inhibition efficiency (IE %) increased with the increase of inhibitor concentration. The surface coverage was 1.55 at 500 ppm inhibitor concentration; hence the optimum concentration was 500 ppm. Theoretical calculations investigate by studying the relationship between molecular structure and inhibition efficiency using semi-empirical molecular quantum calculations within the PM3 method as implemented in HyperChem package.
Keywords :
Quinazolin, Imine, Inhibition efficiency , Zinc metal.
