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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2020.1
- 수록면
- 1,725 - 1,733 (9page)
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Quantum chemical study, based on DFT methods at B3LYP/6-31G (d, p) level of theory, of four tetrazole compounds,denoted Ph-T, Me-Ph-T, MeO-Ph-T, Cl-Ph-T and reported as corrosion inhibitors in acidic medium, has been investigatedin an attempt to find relationships between their molecular electronic properties and their corresponding experimental corrosioninhibition efficiencies. The global reactivity descriptors, such as the frontier molecular orbital energies (EHOMO andELUMO), energy gap ΔE, electronegativity χ, absolute hardness η and softens σ, fraction of electrons transferred ΔN as wellas local selectivity parameters such as Natural Atomic Populations and Fukui indices were also calculated and discussed. The calculations were undertaken in both gaseous and aqueous states for a better approach of the experimental conditions. The results showed that Cl-Ph-T presented the lowest ELUMO and the highest χ indicating its high electron acceptor ability,which can explain its good corrosion inhibition efficiency when compared to the three-other studied tetrazole derivatives.
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