Saraçoğlu M., Elusta M.I.A., Kaya S., Kaya C., Kandemirli F.Saracoglu, M, Elusta, MIA, Kaya, S, Kaya, C, Kandemirli, F2023-05-092023-05-092018-08-012018.01.011452-3981https://hdl.handle.net/20.500.12597/14206In this study, the density functional theory (DFT) at the gradient-corrected correlation functional of Lee-Yang-Parr (B3LYP) functional with 6-311++G(2d,2p), correlation-consistent, polarized valence, X-zeta (cc-pVTZ) basis sets, BP86 functional with/6-311++G(2d,2p) basis set and ab initio calculations using the Hartree-Fock (HF)/6-311++G(2d,2p) methods in gas and water phase of neutral and protonated forms of molecules were performed on six thiosemicarbazone derivatives, namely 4-methyl acetophenone thiosemicarbazone (Inh 1), 4-methoxy acetophenone thiosemicarbazone (Inh 2), Benzaldehyde thiosemicarbazone (Inh 3), 4-methoxy benzaldehyde thiosemicarbazone (Inh 4), 4-ethyl benzaldehyde thiosemicarbazone (Inh 5) and 4-bromo benzaldehyde thiosemicarbazone (Inh 6). The quantum chemical parameters/descriptors, namely, dipole moment (D), highest occupied molecular orbital energy (EHOMO), lowest unoccupied molecular orbital energy (ELUMO), HOMO-LUMO energy gap (ΔE), absolute electronegativity (X), absolute hardness (η), softness (σ), proton affinity (PA), electrophilicity (ω) and nucleophilicity (ε) were calculated and correlated with the experimental inhibition efficiencies (%IE). It was observed that the theoretical and experimental results were in good agreement.trueCorrosion | Fe B Si glassy alloy 78 13 9 | Inhibitors | Organic molecules | Theoretical studyArticle10.20964/2018.08.7410.20964/2018.08.742-s2.0-85072229300WOS:0004418214000798241825913