DFT computational study of pyridazine derivatives as corrosion inhibitors for mild steel in acidic media

نویسندگان

چکیده

The molecular structures of two Pyridazine derivative;5-phenyl-6-ethyl-pyridazine-3-thione (PEPT) and 5-phenyl-6-ethylpridazine-3-one (PEPO) were simulated for corrosion inhibition efficiency using quantum chemical calculations based on density functional theory (DFT) at the B3LYP/6-31G* basis set level in order to compare relationship between their structure,electronic structure potential.The properties such as EHOMO (energy highest occupied orbital), ELUMO lowest unoccupied energy gap (ΔE), dipole moment (μ), global hardness (η), softness (S), electronegativity (χ), electrophilicity (ω), nucleophilicity (ɛ), electrons transferred from inhibitors metal surface (ΔN), change during electronic back-donation process (ΔE*) calculated. results show that 5-phenyl-6-ethyl-pyridazine-3-thione would have higher than due its relative EHOMO, ELUMO, ΔE, μ, η, S , ꭓ, ω, ΔN, ∆E*.

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ژورنال

عنوان ژورنال: GSC Advanced Research and Reviews

سال: 2022

ISSN: ['2582-4597']

DOI: https://doi.org/10.30574/gscarr.2022.11.3.0151