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Probing the Potential Energy Profile of the I + (H 2O) 3 → HI + (H 2O) 2OH Forward and Reverse Reactions: High Level CCSD(T) Studies with Spin-Orbit Coupling Included. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020904. [PMID: 36677960 PMCID: PMC9866029 DOI: 10.3390/molecules28020904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/05/2023] [Accepted: 01/11/2023] [Indexed: 01/18/2023]
Abstract
Three different pathways for the atomic iodine plus water trimer reaction I + (H2O)3 → HI + (H2O)2OH were preliminarily examined by the DFT-MPW1K method. Related to previous predictions for the F/Cl/Br + (H2O)3 reactions, three pathways for the I + (H2O)3 reaction are linked in terms of geometry and energetics. To legitimize the results, the "gold standard" CCSD(T) method was employed to investigate the lowest-lying pathway with the correlation-consistent polarized valence basis set up to cc-pVQZ(-PP). According to the CCSD(T)/cc-pVQZ(-PP)//CCSD(T)/cc-pVTZ(-PP) results, the I + (H2O)3 → HI + (H2O)2OH reaction is predicted to be endothermic by 47.0 kcal mol-1. The submerged transition state is predicted to lie 43.7 kcal mol-1 above the separated reactants. The I···(H2O)3 entrance complex lies below the separated reactants by 4.1 kcal mol-1, and spin-orbit coupling has a significant impact on this dissociation energy. The HI···(H2O)2OH exit complex is bound by 4.3 kcal mol-1 in relation to the separated products. Compared with simpler I + (H2O)2 and I + H2O reactions, the I + (H2O)3 reaction is energetically between them in general. It is speculated that the reaction between the iodine atom and the larger water clusters may be energetically analogous to the I + (H2O)3 reaction. The iodine reaction I + (H2O)3 is connected with the analogous valence isoelectronic bromine/chlorine reactions Br/Cl + (H2O)3 but much different from the F + (H2O)3 reaction. Significant difference with other halogen systems, especially for barrier heights, are seen for the iodine systems.
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Khamaganov VG, Orkin VL, Larin IK. Study of the reactions of OH with HCl, HBr, and HI between 298 K and 460 K. INT J CHEM KINET 2020; 52. [DOI: 10.1002/kin.21404] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Victor G. Khamaganov
- Institute of Energy Problems of Chemical Physics Russian Academy of Sciences Moscow Russia
- National Institute of Standards and Technology Gaithersburg Maryland
| | - Vladimir L. Orkin
- Institute of Energy Problems of Chemical Physics Russian Academy of Sciences Moscow Russia
- National Institute of Standards and Technology Gaithersburg Maryland
| | - Igor K. Larin
- Institute of Energy Problems of Chemical Physics Russian Academy of Sciences Moscow Russia
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Machado HG, Sanches-Neto FO, Coutinho ND, Mundim KC, Palazzetti F, Carvalho-Silva VH. "Transitivity": A Code for Computing Kinetic and Related Parameters in Chemical Transformations and Transport Phenomena. Molecules 2019; 24:E3478. [PMID: 31557893 PMCID: PMC6803931 DOI: 10.3390/molecules24193478] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 09/04/2019] [Accepted: 09/08/2019] [Indexed: 12/25/2022] Open
Abstract
The Transitivity function, defined in terms of the reciprocal of the apparent activation energy, measures the propensity for a reaction to proceed and can provide a tool for implementing phenomenological kinetic models. Applications to systems which deviate from the Arrhenius law at low temperature encouraged the development of a user-friendly graphical interface for estimating the kinetic and thermodynamic parameters of physical and chemical processes. Here, we document the Transitivity code, written in Python, a free open-source code compatible with Windows, Linux and macOS platforms. Procedures are made available to evaluate the phenomenology of the temperature dependence of rate constants for processes from the Arrhenius and Transitivity plots. Reaction rate constants can be calculated by the traditional Transition-State Theory using a set of one-dimensional tunneling corrections (Bell (1935), Bell (1958), Skodje and Truhlar and, in particular, the deformed ( d -TST) approach). To account for the solvent effect on reaction rate constant, implementation is given of the Kramers and of Collins-Kimball formulations. An input file generator is provided to run various molecular dynamics approaches in CPMD code. Examples are worked out and made available for testing. The novelty of this code is its general scope and particular exploit of d -formulations to cope with non-Arrhenius behavior at low temperatures, a topic which is the focus of recent intense investigations. We expect that this code serves as a quick and practical tool for data documentation from electronic structure calculations: It presents a very intuitive graphical interface which we believe to provide an excellent working tool for researchers and as courseware to teach statistical thermodynamics, thermochemistry, kinetics, and related areas.
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Affiliation(s)
- Hugo G Machado
- Grupo de Química Teórica e Estrutural de Anápolis, Centro de Pesquisa e Pós-Graduação. Universidade Estadual de Goiás, 75132-400 Anápolis, GO, Brazil.
- Instituto de Química, Universidade de Brasília, Caixa Postal 4478, 70904-970 Brasília, Brazil.
| | - Flávio O Sanches-Neto
- Grupo de Química Teórica e Estrutural de Anápolis, Centro de Pesquisa e Pós-Graduação. Universidade Estadual de Goiás, 75132-400 Anápolis, GO, Brazil.
- Instituto de Química, Universidade de Brasília, Caixa Postal 4478, 70904-970 Brasília, Brazil.
| | - Nayara D Coutinho
- Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia, 06123 Perugia, Italy.
| | - Kleber C Mundim
- Instituto de Química, Universidade de Brasília, Caixa Postal 4478, 70904-970 Brasília, Brazil.
| | - Federico Palazzetti
- Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia, 06123 Perugia, Italy.
| | - Valter H Carvalho-Silva
- Grupo de Química Teórica e Estrutural de Anápolis, Centro de Pesquisa e Pós-Graduação. Universidade Estadual de Goiás, 75132-400 Anápolis, GO, Brazil.
- Instituto de Química, Universidade de Brasília, Caixa Postal 4478, 70904-970 Brasília, Brazil.
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Zhang Y, Song R, Sun Y, Wang R. Computational study on the mechanisms and kinetics of the CH2=CHCH2I with OH reaction. Struct Chem 2018. [DOI: 10.1007/s11224-018-1087-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Wang H, Li G, Li QS, Xie Y, Schaefer HF. I + (H2O)2 → HI + (H2O)OH Forward and Reverse Reactions. CCSD(T) Studies Including Spin-Orbit Coupling. J Phys Chem B 2016; 120:1743-8. [PMID: 26562487 DOI: 10.1021/acs.jpcb.5b09253] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The potential energy profile for the atomic iodine plus water dimer reaction I + (H2O)2 → HI + (H2O)OH has been explored using the "Gold Standard" CCSD(T) method with quadruple-ζ correlation-consistent basis sets. The corresponding information for the reverse reaction HI + (H2O)OH → I + (H2O)2 is also derived. Both zero-point vibrational energies (ZPVEs) and spin-orbit (SO) coupling are considered, and these notably alter the classical energetics. On the basis of the CCSD(T)/cc-pVQZ-PP results, including ZPVE and SO coupling, the forward reaction is found to be endothermic by 47.4 kcal/mol, implying a significant exothermicity for the reverse reaction. The entrance complex I···(H2O)2 is bound by 1.8 kcal/mol, and this dissociation energy is significantly affected by SO coupling. The reaction barrier lies 45.1 kcal/mol higher than the reactants. The exit complex HI···(H2O)OH is bound by 3.0 kcal/mol relative to the asymptotic limit. At every level of theory, the reverse reaction HI + (H2O)OH → I + (H2O)2 proceeds without a barrier. Compared with the analogous water monomer reaction I + H2O → HI + OH, the additional water molecule reduces the relative energies of the entrance stationary point, transition state, and exit complex by 3-5 kcal/mol. The I + (H2O)2 reaction is related to the valence isoelectronic bromine and chlorine reactions but is distinctly different from the F + (H2O)2 system.
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Affiliation(s)
| | - Guoliang Li
- Center for Computational Quantum Chemistry, University of Georgia , Athens, Georgia 30602, United States
| | | | - Yaoming Xie
- Center for Computational Quantum Chemistry, University of Georgia , Athens, Georgia 30602, United States
| | - Henry F Schaefer
- Center for Computational Quantum Chemistry, University of Georgia , Athens, Georgia 30602, United States
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Hao Y, Gu J, Guo Y, Zhang M, Xie Y, Schaefer III HF. Spin–orbit corrected potential energy surface features for the I (2P3/2) + H2O → HI + OH forward and reverse reactions. Phys Chem Chem Phys 2014; 16:2641-6. [DOI: 10.1039/c3cp54031f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Nakano Y, Sadamori K, Ishiwata T. Determination of the rate constants of the reactions of NO3 radical with CF3I and I(2P3/2). INT J CHEM KINET 2012. [DOI: 10.1002/kin.20705] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Canneaux S, Xerri B, Louis F, Cantrel L. Theoretical Study of the Gas-Phase Reactions of Iodine Atoms (2P3/2) with H2, H2O, HI, and OH. J Phys Chem A 2010; 114:9270-88. [DOI: 10.1021/jp104163t] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Sébastien Canneaux
- PhysicoChimie des Processus de Combustion et de l'Atmosphère (PC2A), UMR 8522 CNRS/Lille1, Université Lille 1 Sciences et Technologies, Cité scientifique, Bat C11/C5, 59655 Villeneuve d'Ascq Cedex, France
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Dillon TJ, Tucceri ME, Sander R, Crowley JN. LIF studies of iodine oxide chemistry : Part 3. Reactions IO + NO3 → OIO + NO2, I + NO3 → IO + NO2, and CH2I + O2 → (products): implications for the chemistry of the marine atmosphere at night. Phys Chem Chem Phys 2008; 10:1540-54. [DOI: 10.1039/b717386e] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Moise A, Parker DH, ter Meulen JJ. State-to-state inelastic scattering of OH by HI: A comparison with OH–HCl and OH–HBr. J Chem Phys 2007; 126:124302. [PMID: 17411118 DOI: 10.1063/1.2715930] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Relative state-to-state cross sections and steric asymmetries have been measured for the scattering process: OH (X (2)Pi(32),v=0,J=32,M(J)=32,f)+HI ((1)Sigma,v=0,J<4)-->OH (X (2)Pi,v=0,Omega=12,J=12-52 and Omega=32,J=32-92,ef)+HI, at 690 cm(-1) collision energy. Comparison with the previously studied systems OH-HCl and OH-HBr reveals relevant features of the potential energy surfaces of these molecular systems. Some measured differences concerning the internal energy distribution after collision and the propensities for the impact with one or the other side of the OH molecule in scattering by HCl, HBr, and HI molecules are discussed.
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Affiliation(s)
- A Moise
- Department of Applied Molecular Physics, Institute for Molecules and Materials, Radboud University Nijmegen, 6500 GL Nijmegen, The Netherlands
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Campuzano-Jost P, Crowley JN. Kinetics of the Reaction of OH with HI between 246 and 353 K. J Phys Chem A 1999. [DOI: 10.1021/jp984321x] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- P. Campuzano-Jost
- Max-Planck-Institut für Chemie Division of Atmospheric Chemistry, Postfach 3060, 55020 Mainz, Germany
| | - J. N. Crowley
- Max-Planck-Institut für Chemie Division of Atmospheric Chemistry, Postfach 3060, 55020 Mainz, Germany
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