Journal
ARABIAN JOURNAL OF CHEMISTRY
Volume 14, Issue 2, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.arabjc.2020.102927
Keywords
DFT; Thiaozole derivatives; Quantum chemical studies; Corrosion Inhibition; Metal
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In this study, quantum chemical and theoretical calculations were used to investigate the relationship between electronic parameters of some thiazole derivatives and their corrosion inhibition efficiency. Various properties relevant to their potential action as corrosion inhibitors were studied, shedding light on the impact of different electronic factors on their effectiveness.
Quantum chemical and theoretical calculations were carried out in the present study of some thiaozole derivatives. Relationship between electronic parameters of thiaozole derivatives 5-benzylidene-2,4-dioxo tetrahydro1,3-thiazole (5-BDT) 5-(4'-isopropylbenzylidene)-2,4-dioxotetrahydro-1,3-thiazole (5IPBDT), 5-(3'-thenylidene)-2,4-dioxotetrahydro-1,3-thiazole (5-TDT) and 5-(3', 4'dimetoxybenzylidene)-2,4-dioxotetrahydro-1,3-thiazole (5-MBDT) and corrosion inhibition efficiency have been investigated by the Hartree-Fock (HF) and Becke, 3-parameter, Lee-Yang-Parr (B3LYP), M06-2X method with 3-21G, 6-31G, and sdd basis set. All calculations have been performed using the Gaussian 09W suite of programs. The properties most relevant to their potential action as corrosion inhibitors: EHOMO, ELUMO, Delta E (HOMO-LUMO energy gap), electronegativity (chi), chemical potential (mu), chemical hardness (eta), electrophilicity (omega), nucleophilicity (epsilon), global softness (sigma) and proton affinity (PA) have been studied. (C) 2020 Published by Elsevier B.V. on behalf of King Saud University.
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