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Shiroudi A, Śmiechowski M, Czub J, Abdel-Rahman MA. Computational analysis of substituent effects on proton affinity and gas-phase basicity of TEMPO derivatives and their hydrogen bonding interactions with water molecules. Sci Rep 2024; 14:8434. [PMID: 38600208 PMCID: PMC11006853 DOI: 10.1038/s41598-024-58582-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Accepted: 04/01/2024] [Indexed: 04/12/2024] Open
Abstract
The study investigates the molecular structure of 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) and its derivatives in the gas phase using B3LYP and M06-2X functional methods. Intermolecular interactions are analyzed using natural bond orbital (NBO) and atoms in molecules (AIM) techniques. NO2-substituted TEMPO displays high reactivity, less stability, and softer properties. The study reveals that the stability of TEMPO derivatives is mainly influenced by LP(e) → σ∗ electronic delocalization effects, with the highest stabilization observed on the oxygen atom of the nitroxide moiety. This work also considers electron density, atomic charges, and energetic and thermodynamic properties of the studied NO radicals, and their relative stability. The proton affinity and gas-phase basicity of the studied compounds were computed at T = 298 K for O-protonation and N-protonation, respectively. The studied DFT method calculations show that O-protonation is more stable than N-protonation, with an energy difference of 16.64-20.77 kcal/mol (22.80-25.68 kcal/mol) at the B3LYP (M06-2X) method. The AIM analysis reveals that the N-O…H interaction in H2O complexes has the most favorable hydrogen bond energy computed at bond critical points (3, - 1), and the planar configurations of TEMPO derivatives exhibit the highest EHB values. This indicates stronger hydrogen bonding interactions between the N-O group and water molecules.
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Affiliation(s)
- Abolfazl Shiroudi
- Department of Physical Chemistry, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland.
- BioTechMed Center, Gdańsk University of Technology, 80-233, Gdańsk, Poland.
| | - Maciej Śmiechowski
- Department of Physical Chemistry, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland
| | - Jacek Czub
- Department of Physical Chemistry, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland
- BioTechMed Center, Gdańsk University of Technology, 80-233, Gdańsk, Poland
| | - Mohamed A Abdel-Rahman
- Department of Chemistry, Faculty of Science, Suez University, P.O. Box: 43221, Suez, Egypt.
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Garagan IA, Moskalik MY, Astakhova VV, Sterkhova IV, Vashchenko AV, Albanov AI, Shainyan BA. Regioselective Oxidative Halotriflamidation of Dienes and Trienes as a Route to New Amidines and Heterocycles. ChemistrySelect 2022. [DOI: 10.1002/slct.202202231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ivan A. Garagan
- A. E. Favorsky Irkutsk Institute of Chemistry Siberian Branch of the Russian Academy of Sciences 1 Favorsky Street 664033 Irkutsk Russian Federation
| | - Mikhail Yu. Moskalik
- A. E. Favorsky Irkutsk Institute of Chemistry Siberian Branch of the Russian Academy of Sciences 1 Favorsky Street 664033 Irkutsk Russian Federation
| | - Vera V. Astakhova
- A. E. Favorsky Irkutsk Institute of Chemistry Siberian Branch of the Russian Academy of Sciences 1 Favorsky Street 664033 Irkutsk Russian Federation
| | - Irina V. Sterkhova
- A. E. Favorsky Irkutsk Institute of Chemistry Siberian Branch of the Russian Academy of Sciences 1 Favorsky Street 664033 Irkutsk Russian Federation
| | - Alexander V. Vashchenko
- A. E. Favorsky Irkutsk Institute of Chemistry Siberian Branch of the Russian Academy of Sciences 1 Favorsky Street 664033 Irkutsk Russian Federation
| | - Alexander I. Albanov
- A. E. Favorsky Irkutsk Institute of Chemistry Siberian Branch of the Russian Academy of Sciences 1 Favorsky Street 664033 Irkutsk Russian Federation
| | - Bagrat A. Shainyan
- A. E. Favorsky Irkutsk Institute of Chemistry Siberian Branch of the Russian Academy of Sciences 1 Favorsky Street 664033 Irkutsk Russian Federation
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Safi ZS, Wazzan N, Aqel H. Calculation of vertical and adiabatic ionization potentials for some benzaldehydes using hybrid DFT, multilevel G3B3 and MP2 methods. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139349] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Dutta S, Singh K, Koley D. Computational Exploration of Mechanistic Avenues in Metal-Free CO 2 Reduction to CO by Disilyne Bisphosphine Adduct and Phosphonium Silaylide. Chem Asian J 2021; 16:3492-3508. [PMID: 34499404 DOI: 10.1002/asia.202100847] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 09/03/2021] [Indexed: 01/18/2023]
Abstract
Recent years have seen a growing interest in metal-free CO2 activation by silylenes, silylones, and silanones. However, compared to mononuclear silicon species, CO2 reduction mediated by dinuclear silicon compounds, especially disilynes, has been less explored. We have carried out extensive computational investigations to explore the mechanistic avenues in CO2 reduction to CO by donor-stabilized disilyne bisphosphine adduct (R1M ) and phosphonium silaylide (R2) using density functional theory calculations. Theoretical calculations suggest that R1M exhibits donor-stabilized bis(silylene) bonding features with unusual Si-Si multiple bonding. Various modes of CO2 coordination to R1M have been investigated and the coordination of CO2 by the carbon center to R1M is found to be kinetically more facile than that by oxygen involving only one or both the silicon centers. Both the theoretically predicted reaction mechanisms of R1M and R2-mediated CO2 reduction reveal the crucial role of silicon-centered lone pairs in CO2 activations and generation of key intermediates possessing enormous strain in the Si-C-O ring, which plays the pivotal role in CO extrusion.
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Affiliation(s)
- Sayan Dutta
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, 741 246, India
| | - Kalyan Singh
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, 741 246, India
| | - Debasis Koley
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, 741 246, India
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Safi ZS, Wazzan N. Benchmark calculations of proton affinity and gas-phase basicity using multilevel (G4 and G3B3), B3LYP and MP2 computational methods of para-substituted benzaldehyde compounds. J Comput Chem 2021; 42:1106-1117. [PMID: 33871092 DOI: 10.1002/jcc.26538] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 04/03/2021] [Accepted: 04/07/2021] [Indexed: 12/18/2022]
Abstract
This study presents the benchmark calculations of proton affinities (PAs) and gas-phase basicities (GBs) of 8-para substituted benzaldehyde compounds using the multilevel model chemistries (G3B3 and G4), density-functional quantum model (B3LYP) and ab initio model (MP2). The results show that the computed properties are strongly correlated with the available experimental data. The PAs and the GBs of other eight para-substituted benzaldehyde compounds, for which the experimental data does not currently exist, have been calculated using G3B3 and B3LYP methods. The correlations between the experimental PAs and GBs with the computed properties such as PA, GB, chemical properties (bond lengths, electron density and δ1 H NMR chemical shift) of the investigated benzaldehydes have been studied and statistically analyzed. The influence of the substituted groups has been discussed in terms of inductive effect and electron donating and electron withdrawing effect. The results obtained show that the chemical properties of the benzaldehyde compounds are controlled by the strong coupling between the CHO group and the nature of the para-substituent groups through the benzene ring as a conducting linkage.
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Affiliation(s)
- Zaki S Safi
- Chemistry Department, Faculty of Science, Al Azhar University-Gaza, Gaza, Palestine
| | - Nuha Wazzan
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
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The Photostability of Novel Boron Hydride Blue Emitters in Solution and Polystyrene Matrix. MATERIALS 2021; 14:ma14030589. [PMID: 33513832 PMCID: PMC7865770 DOI: 10.3390/ma14030589] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 01/08/2021] [Accepted: 01/19/2021] [Indexed: 11/30/2022]
Abstract
In recent work, the boron hydride anti-B18H22 was announced in the literature as a new laser dye, and, along with several of its derivatives, its solutions are capable of delivering blue luminescence with quantum yields of unity. However, as a dopant in solid polymer films, its luminescent efficiencies reduce dramatically. Clarification of underlying detrimental effects is crucial for any application and, thus, this contribution makes the initial steps in the use of these inorganic compounds in electrooptical devices based on organic polymer thin films. The photoluminescence behavior of the highly luminescent boron hydrides, anti-B18H22 and 3,3′,4,4′-Et4-anti-B18H18, were therefore investigated. The quantum yields of luminescence and photostabilities of both compounds were studied in different solvents and as polymer-solvent blends. The photophysical properties of both boranes are evaluated and discussed in terms of their solvent-solute interactions using photoluminescence (PL) and NMR spectroscopies. The UV degradability of prepared thin films was studied by fluorimetric measurement. The effect of the surrounding atmosphere, dopant concentration and the molecular structure were assessed.
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Experimental/computational assessments of steel in HCl medium containing aminocarbonitrile-incorporated polyhydroxy-functionalized pyrido[2,3-d]pyrimidine as a green corrosion inhibitor. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114902] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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8
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Hassan N, Ramadan AM, Khalil S, Ghany NAA, Asiri AM, El-Shishtawy RM. Experimental and computational investigations of a novel quinoline derivative as a corrosion inhibitor for mild steel in salty water. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125454] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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9
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Moskalik MY, Shainyan BA, Ushakov IA, Sterkhova IV, Astakhova VV. Oxidant effect, skeletal rearrangements and solvent interception in oxidative triflamidation of norbornene and 2,5-norbornadiene. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131018] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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10
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Mondal T, Dutta S, De S, Thirumalai D, Koley D. Donor Stabilized Diatomic Gr.14 E 2 (E = C-Pb) Molecule D-E 2-D (D = NHC, aNHC, NNHC, NHSi, NHGe, cAAC, cAASi, cAAGe): A Theoretical Insight. J Phys Chem A 2019; 123:565-581. [PMID: 30562460 DOI: 10.1021/acs.jpca.8b11005] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Quantum chemical calculations have been carried out to explore the detailed electronic structure and bonding scenario in various bis-donor stabilized E2 compounds (E = C-Pb). Our computational findings reveal that the thermodynamic stabilities of the E2 core gradually decrease as we move down the group. A linear D-E-E'-D framework is observed for C2 systems, while the heavier group 14 analogues possess trans-bent geometries. Consideration of few compounds as viable targets for synthesis is suggested by their corresponding calculated formation energies. In addition, the thermodynamic stabilities of C2 systems notably increase with the saturation of the donor ring framework and are even more pronounced for boron-substituted saturated NHD ligand. QTAIM calculations affirmed that the covalent nature of E-E' bonds shifts toward the donor-acceptor region as one traverses from top to bottom along group 14. The E-D and E'-D bonds in the C2 systems have covalent nature, whereas those in Si2-Pb2 systems are characterized by donor-acceptor bonds. In addition, we have computed proton affinities and vertical ionization potentials (VIPs) of these compounds. An excellent correlation was obtained between calculated VIPs and orbital energies of HOMOs. Furthermore, in the present study, we also explored the effect of bis-donors in the stabilization of heterodiatomic SiC compounds. Our calculations indicate that a typical bonding description of the SiC(D)2 compounds should be represented by a combination of a classical double bond between C-D with significant donor-acceptor interaction in Si-D, i.e., D → Si═C═D. The SiC(D)2 systems are found to be less stable than the corresponding dicarbon compounds C2(D)2, but they show significant stabilization compared to the corresponding disilicon systems Si2(D)2.
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Affiliation(s)
- Totan Mondal
- Department of Chemical Sciences , Indian Institute of Science Education and Research (IISER) Kolkata , Mohanpur 741 246 , India
| | - Sayan Dutta
- Department of Chemical Sciences , Indian Institute of Science Education and Research (IISER) Kolkata , Mohanpur 741 246 , India
| | - Sriman De
- Department of Chemical Sciences , Indian Institute of Science Education and Research (IISER) Kolkata , Mohanpur 741 246 , India
| | - D Thirumalai
- Department of Chemistry , Thiruvalluvar University , Serkkadu, Vellore 632 115 , India
| | - Debasis Koley
- Department of Chemical Sciences , Indian Institute of Science Education and Research (IISER) Kolkata , Mohanpur 741 246 , India
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11
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Dagdag O, Safi Z, Erramli H, Cherkaoui O, Wazzan N, Guo L, Verma C, Ebenso EE, El Harfi A. Adsorption and anticorrosive behavior of aromatic epoxy monomers on carbon steel corrosion in acidic solution: computational studies and sustained experimental studies. RSC Adv 2019; 9:14782-14796. [PMID: 35516296 PMCID: PMC9064207 DOI: 10.1039/c9ra01672d] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 04/17/2019] [Indexed: 11/24/2022] Open
Abstract
Herein, the synthesis, characterization and corrosion inhibition effectiveness of two aromatic epoxy monomers (AEMs) namely, 2-(oxiran-2-yl-methoxy)-N,N-bis(oxiran-2-yl-methyl)aniline (AEM1) and N,N-bis(oxiran-2-ylmethyl)-2-((oxiran-2-ylmethyl) thio)aniline (AEM2), in carbon steel corrosive dissolution in 1 M HCl solution is investigated using computational and experimental techniques. AEM1 and AEM2 were characterized using FT-IR, 1H NMR and 13C NMR spectroscopy techniques. Electrochemical results demonstrated that AEMs act as reasonably good corrosion inhibitors for carbon steel in 1 M HCl medium and their effectiveness followed the sequence: AEM2 (95.4%) > AEM1 (94.3%). A PDP study showed that AEMs act as mixed-type inhibitors with slight anodic predominance. Adsorption of the AEMs obeyed the Langmuir isotherm model. Interactions between AEMs and the metallic surface was further studied using DFT and MD simulations that give several computational parameters such as I, A, EHOMO, ELUMO, ΔE, δ, χ, ρ, σ, η, ΔN and Eads. The experimental and computational results were in good agreement and well complimented each other. Herein, the synthesis, characterization and corrosion inhibition effectiveness of two aromatic epoxy monomers (AEMs) in carbon steel corrosive dissolution in 1 M HCl solution was investigated using computational and experimental techniques.![]()
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Affiliation(s)
- Omar Dagdag
- Laboratory of Agroresources
- Polymers and Process Engineering (LAPPE)
- Department of Chemistry
- Faculty of Science
- Ibn Tofail University
| | - Zaki Safi
- Al Azhar University-Gaza
- Chemistry Department
- Faculty of Science
- Palestine
| | - Hamid Erramli
- Laboratory of Materials, Electrochemistry and Environment
- Department of Chemistry
- Faculty of Sciences
- Ibn Tofail University
- Kenitra
| | - Omar Cherkaoui
- Higher School of Textile and Clothing Industries
- Laboratory REMTEX
- Casablanca
- Morocco
| | - Nuha Wazzan
- King Abdulaziz University
- Chemistry Department
- Faculty of Science
- Jeddah
- Saudi Arabia
| | - Lei Guo
- School of Materials and Chemical Engineering
- Tongren University
- Tongren
- China
| | - Chandrabhan Verma
- Material Science Innovation & Modelling (MaSIM) Research Focus Area
- Faculty of Natural and Agricultural Sciences
- North-West University
- Mmabatho 2735
- South Africa
| | - E. E. Ebenso
- Material Science Innovation & Modelling (MaSIM) Research Focus Area
- Faculty of Natural and Agricultural Sciences
- North-West University
- Mmabatho 2735
- South Africa
| | - Ahmed El Harfi
- Laboratory of Agroresources
- Polymers and Process Engineering (LAPPE)
- Department of Chemistry
- Faculty of Science
- Ibn Tofail University
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12
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Solvent Basicity, A Study of Kamlet–Taft β and Gutmann DN Values Using Computationally Derived Molecular Properties. J SOLUTION CHEM 2018. [DOI: 10.1007/s10953-018-0791-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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13
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Theoretical studies of the influence of protic and aprotic ionic liquids on the basicity of CaO as a solid base catalyst. Chem Phys 2018. [DOI: 10.1016/j.chemphys.2018.02.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Pedraza-González L, Romero J, Alí-Torres J, Reyes A. Prediction of proton affinities of organic molecules using the any-particle molecular-orbital second-order proton propagator approach. Phys Chem Chem Phys 2018; 18:27185-27189. [PMID: 27711707 DOI: 10.1039/c6cp05128f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We assess the performance of the recently developed any-particle molecular-orbital second-order proton propagator (APMO/PP2) scheme [M. Díaz-Tinoco, J. Romero, J. V. Ortiz, A. Reyes and R. Flores-Moreno, J. Chem. Phys., 2013, 138, 194108] on the calculation of gas phase proton affinities (PAs) of a set of 150 organic molecules comprising several functional groups: amines, alcohols, aldehydes, amides, ketones, esters, ethers, carboxylic acids and carboxylate anions. APMO/PP2 PAs display an overall mean absolute error of 0.68 kcal mol-1 with respect to experimental data. These results suggest that the APMO/PP2 method is an alternative approach for the quantitative prediction of gas phase proton affinities. One novel feature of the method is that a PA can be obtained from a single calculation of the optimized protonated molecule.
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Affiliation(s)
- Laura Pedraza-González
- Department of Chemistry, Universidad Nacional de Colombia, Av. Cra 30 # 45-03, Bogotá, Colombia.
| | - Jonathan Romero
- Department of Chemistry, Universidad Nacional de Colombia, Av. Cra 30 # 45-03, Bogotá, Colombia.
| | - Jorge Alí-Torres
- Department of Chemistry, Universidad Nacional de Colombia, Av. Cra 30 # 45-03, Bogotá, Colombia.
| | - Andrés Reyes
- Department of Chemistry, Universidad Nacional de Colombia, Av. Cra 30 # 45-03, Bogotá, Colombia.
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15
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The effect of anion-π interactions on the properties of pyrazinamide and some related compounds. COMPUT THEOR CHEM 2018. [DOI: 10.1016/j.comptc.2017.12.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Pedraza-González L, Charry J, Quintero W, Alí-Torres J, Reyes A. Fast and accurate prediction of proton affinities: revisiting the extended Koopmans' theorem for protons. Phys Chem Chem Phys 2017; 19:25324-25333. [PMID: 28890980 DOI: 10.1039/c7cp04936f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work we propose schemes based on the extended Koopmans' theorem for quantum nuclei (eKT), in the framework of the any particle molecular orbital approach (APMO/KT), for the quantitative prediction of gas phase proton affinities (PAs). The performance of these schemes has been tested on a set of 300 organic molecules containing diverse functional groups. The APMO/KT scheme scaled by functional group (APMO/KT-SC-FG) displays an overall mean absolute error of 1.1 kcal mol-1 with respect to experimental data. Its performance in PA calculations is similar to that of post-Hartree-Fock composite methods or that of the APMO second order proton propagator (APMO/PP2) approach. The APMO/KT-SC-FG scheme is also employed to predict PAs of polyfunctional molecules such as the Nerve Agent VX and the 20 common α-amino acids, finding excellent agreement with available theoretical and/or experimental data. The accuracy of the predictions demonstrates that the APMO/KT-SC-FG scheme is a low-cost alternative to adiabatic methods for the calculation of accurate PAs. One of the most appealing features of the APMO/KT-SC-FG scheme, is that PAs can be derived from one single-point APMO Hartree-Fock calculation.
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Affiliation(s)
- Laura Pedraza-González
- Department of Chemistry, Universidad Nacional de Colombia, Av. Cra 30 # 45-03, Bogotá, Colombia.
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17
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Erdoğan Ş, Safi ZS, Kaya S, Işın DÖ, Guo L, Kaya C. A computational study on corrosion inhibition performances of novel quinoline derivatives against the corrosion of iron. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.01.037] [Citation(s) in RCA: 139] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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18
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Ayine-Tora DM, Kingsford-Adaboh R, Asomaning WA, Harrison JJEK, Mills-Robertson FC, Bukari Y, Sakyi PO, Kaminta S, Reynisson J. Coumarin Antifungal Lead Compounds from Millettia thonningii and Their Predicted Mechanism of Action. Molecules 2016; 21:molecules21101369. [PMID: 27754464 PMCID: PMC6274499 DOI: 10.3390/molecules21101369] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 10/05/2016] [Accepted: 10/07/2016] [Indexed: 11/22/2022] Open
Abstract
Fungal pathogens continue to pose challenges to humans and plants despite efforts to control them. Two coumarins, robustic acid and thonningine-C isolated from Millettia thonningii, show promising activity against the fungus Candida albicans with minimum fungicidal concentration of 1.0 and 0.5 mg/mL, respectively. Molecular modelling against the putative bio-molecular target, lanosterol 14α-demethylase (CYP51), revealed a plausible binding mode for the active compounds, in which the hydroxyl group binds with a methionine backbone carboxylic group blocking access to the iron catalytic site. This binding disrupts the synthesis of several important sterols for the survival of fungi.
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Affiliation(s)
- Daniel M Ayine-Tora
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, 1142 Auckland, New Zealand.
- Department of Chemistry, University of Ghana, LG 56, Legon-Accra, Ghana.
| | | | | | | | - Felix C Mills-Robertson
- Department of Biochemistry and Biotechnology, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
| | - Yahaya Bukari
- Botany Department, University of Ghana, LG 55, Legon-Accra, Ghana.
| | - Patrick O Sakyi
- Department of Chemistry, University of Ghana, LG 56, Legon-Accra, Ghana.
| | | | - Jóhannes Reynisson
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, 1142 Auckland, New Zealand.
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Safi ZS. A theoretical study on the structure of thiazolidine-2,4-dione and its 5-substituted derivatives in the gas phase. Implications for the thiazolidine-2,4-dione -water complex. ARAB J CHEM 2016. [DOI: 10.1016/j.arabjc.2015.03.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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20
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Quantum chemical and molecular dynamic simulation studies for the prediction of inhibition efficiencies of some piperidine derivatives on the corrosion of iron. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2016.05.034] [Citation(s) in RCA: 124] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Kaya S, Kaya C, Guo L, Kandemirli F, Tüzün B, Uğurlu İ, Madkour LH, Saraçoğlu M. Quantum chemical and molecular dynamics simulation studies on inhibition performances of some thiazole and thiadiazole derivatives against corrosion of iron. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.03.042] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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22
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Madkour LH, Elshamy IH. Experimental and computational studies on the inhibition performances of benzimidazole and its derivatives for the corrosion of copper in nitric acid. INTERNATIONAL JOURNAL OF INDUSTRIAL CHEMISTRY 2016. [DOI: 10.1007/s40090-015-0070-8] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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Kaya S, Banerjee P, Saha SK, Tüzün B, Kaya C. Theoretical evaluation of some benzotriazole and phospono derivatives as aluminum corrosion inhibitors: DFT and molecular dynamics simulation approaches. RSC Adv 2016. [DOI: 10.1039/c6ra14548e] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The adsorption and corrosion inhibition properties of some benzotriazole and phospono derivatives namely, (PBTA), (TBTA), (PAA) and (PBA) molecules on the corrosion of aluminum were investigated by quantum chemical calculations and by molecular dynamics simulations.
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Affiliation(s)
- Savaş Kaya
- Cumhuriyet University
- Faculty of Science
- Department of Chemistry
- Sivas
- Turkey
| | - Priyabrata Banerjee
- Surface Engineering and Tribology Group
- CSIR-Central Mechanical Engineering Research Institute
- Durgapur 713209
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Sourav Kr. Saha
- Surface Engineering and Tribology Group
- CSIR-Central Mechanical Engineering Research Institute
- Durgapur 713209
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Burak Tüzün
- Cumhuriyet University
- Faculty of Science
- Department of Chemistry
- Sivas
- Turkey
| | - Cemal Kaya
- Cumhuriyet University
- Faculty of Science
- Department of Chemistry
- Sivas
- Turkey
| |
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