Synthesis, X-ray structure and theoretical study of benzazole thioether and its zinc complex as corrosion inhibitors for steel in acidic medium

A ligand, 2-((benzo[d]thiazol-2-ylthio)methyl)-1 H -benzo[d]imidazole, and its zinc complex have been synthesized. The structure of these compounds have been determined by spectroscopic techniques and single crystal X-ray diffraction. The corrosion inhibition study of these compounds for steel in 0....

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Published inResearch on chemical intermediates Vol. 42; no. 10; pp. 7447 - 7470
Main Authors Bilel, Mezhoud, Mehdi, Bouchouit, Elhadi, Said Mohamed, Lyamine, Messaadia, Ali, Belfaitah, Hocine, Merazig, Aissa, Chibani, Sofiane, Bouacida, Abdelmalek, Bouraiou
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Netherlands 01.10.2016
Springer Nature B.V
Subjects
Catalysis
Chemistry
Chemistry and Materials Science
Electronic properties
Inorganic Chemistry
Ligands
Physical Chemistry
Single crystals
Polarization
Coordination compound
Corrosion
XRF analysis
AFM
Raman spectroscopy
EIS
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Summary:A ligand, 2-((benzo[d]thiazol-2-ylthio)methyl)-1 H -benzo[d]imidazole, and its zinc complex have been synthesized. The structure of these compounds have been determined by spectroscopic techniques and single crystal X-ray diffraction. The corrosion inhibition study of these compounds for steel in 0.5 M H 2 SO 4 medium has also been investigated using potentiodynamic polarization and EIS techniques. The quantum calculations were applied to investigate the relationship between the electronic properties and the corrosion inhibition efficiency of the two benzazoles derivatives. Surface analysis (XRF) indicated that the rust layer formed on the Cu-containing steels was enriched with Cu compounds. Polarization curves revealed that both inhibitors acted as a mixed-type inhibitor.
ISSN:0922-6168
1568-5675
DOI:10.1007/s11164-016-2546-3