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Semiempirical Potential in Kinetics Calculations on the HC3N + CN Reaction. Molecules 2022; 27:molecules27072297. [PMID: 35408696 PMCID: PMC9000235 DOI: 10.3390/molecules27072297] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/25/2022] [Accepted: 03/28/2022] [Indexed: 02/04/2023] Open
Abstract
The reaction between the cyano radical CN and cyanoacetylene molecule HC3N is of great interest in different astronomical fields, from star-forming regions to planetary atmospheres. In this work, we present a new synergistic theoretical approach for the derivation of the rate coefficient for gas phase neutral-neutral reactions. Statistic RRKM calculations on the Potential Energy Surface are coupled with a semiempirical analysis of the initial bimolecular interaction. The value of the rate coefficient for the HC3N + CN → H + NCCCCN reaction obtained with this method is compared with previous theoretical and experimental investigations, showing strengths and weaknesses of the new presented approach.
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2
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Lombardi A, Faginas-Lago N. Deactivation dynamics of carbon dioxide in gas phase at thermal and moderately high temperature regimes. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.138850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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3
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Valentini P, Grover MS, Josyula E. Constructing feed-forward artificial neural networks to fit potential energy surfaces for molecular simulation of high-temperature gas flows. Phys Rev E 2020; 102:053302. [PMID: 33327180 DOI: 10.1103/physreve.102.053302] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 10/08/2020] [Indexed: 11/07/2022]
Abstract
Kinetic rates for thermochemical nonequilibrium models are generally computed from quasiclassical trajectory (QCT) calculations on accurate ab initio potential energy surfaces (PES). In this article, we use a feed-forward artificial neural network (ANN) to fit existing single-point energies for N_{2}+N_{2} interactions [Bender et al., J. Chem. Phys. 143, 054304 (2015)JCPSA60021-960610.1063/1.4927571] to construct a PES suitable for molecular simulation of high-temperature gas flows. We then perform detailed comparisons with a widely used N_{4} PES that was built using the permutation invariant polynomials (PIP) method. Specific physical considerations in the construction of the ANN for this application are detailed. Translation, rotation, and permutation invariance are precisely satisfied by mapping the interatomic distances onto a set of permutation invariant inputs, known as fundamental invariants (FI) that generate the permutation invariant polynomial ring. The diatomic energy is imposed by decomposing the total potential energy into a sum of a two-body and a many-body energy contribution. To obtain the correct dynamical behavior with the most basic, yet computationally efficient ANN, spurious long-distance interactions must be removed to avoid incorrect physical behavior at the dissociation threshold. We use a simple apodization function to smoothly taper off to zero any residual many-body interaction at large separations. Both accuracy and performance of the FI-ANN PES are assessed. QCT calculations are used to compute dissociation probabilities and vibrational energy distributions at various equilibrium temperatures. Excellent agreement with the results obtained from the PIP PES is found. For our test case, the ANN PES is also significantly more computationally efficient than the PIP PES at comparable root-mean-square error levels.
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Affiliation(s)
- Paolo Valentini
- Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA
| | - Maninder S Grover
- Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA
| | - Eswar Josyula
- Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, USA
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4
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Li J, Varga Z, Truhlar DG, Guo H. Many-Body Permutationally Invariant Polynomial Neural Network Potential Energy Surface for N4. J Chem Theory Comput 2020; 16:4822-4832. [DOI: 10.1021/acs.jctc.0c00430] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jun Li
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, United States
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, China
| | - Zoltan Varga
- Department of Chemistry, Chemical Theory Center, and Minnesota Supercomputer Institute, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Donald G. Truhlar
- Department of Chemistry, Chemical Theory Center, and Minnesota Supercomputer Institute, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Hua Guo
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, United States
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5
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Lombardi A, Pirani F, Bartolomei M, Coletti C, Laganà A. Full Dimensional Potential Energy Function and Calculation of State-Specific Properties of the CO+N 2 Inelastic Processes Within an Open Molecular Science Cloud Perspective. Front Chem 2019; 7:309. [PMID: 31192186 PMCID: PMC6540877 DOI: 10.3389/fchem.2019.00309] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Accepted: 04/18/2019] [Indexed: 11/27/2022] Open
Abstract
A full dimensional Potential Energy Surface (PES) of the CO + N2 system has been generated by extending an approach already reported in the literature and applied to N2-N2 (Cappelletti et al., 2008), CO2-CO2 (Bartolomei et al., 2012), and CO2-N2 (Lombardi et al., 2016b) systems. The generation procedure leverages at the same time experimental measurements and high-level ab initio electronic structure calculations. The procedure adopts an analytic formulation of the PES accounting for the dependence of the electrostatic and non-electrostatic components of the intermolecular interaction on the deformation of the monomers. In particular, the CO and N2 molecular multipole moments and electronic polarizabilities, the basic physical properties controlling the behavior at intermediate and long-range distances of the interaction components, were made to depend on relevant internal coordinates. The formulated PES exhibits substantial advantages when used for structural and dynamical calculations. This makes it also well suited for reuse in Open Molecular Science Cloud services.
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Affiliation(s)
- Andrea Lombardi
- Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia, Perugia, Italy.,Consortium for Computational Molecular and Materials Sciences (CMS)2, Perugia, Italy
| | - Fernando Pirani
- Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia, Perugia, Italy
| | - Massimiliano Bartolomei
- Instituto de Física Fundamental, Consejo Superior de Investigaciones Científicas, Madrid, Spain
| | - Cecilia Coletti
- Dipartimento di Farmacia, Università "G. d'Annunzio" Chieti-Pescara, Chieti, Italy
| | - Antonio Laganà
- Consortium for Computational Molecular and Materials Sciences (CMS)2, Perugia, Italy.,CNR ISTM-UOS Perugia, Perugia, Italy.,Master-UP srl, Perugia, Italy
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6
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Vekeman J, Faginas-Lago N, Lombardi A, Sánchez de Merás A, García Cuesta I, Rosi M. Molecular Dynamics of CH 4/N 2 Mixtures on a Flexible Graphene Layer: Adsorption and Selectivity Case Study. Front Chem 2019; 7:386. [PMID: 31214569 PMCID: PMC6557170 DOI: 10.3389/fchem.2019.00386] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Accepted: 05/14/2019] [Indexed: 11/25/2022] Open
Abstract
We theoretically investigate graphene layers, proposing them as membranes of subnanometer size suitable for CH4/N2 separation and gas uptake. The observed potential energy surfaces, representing the intermolecular interactions within the CH4/N2 gaseous mixtures and between these and the graphene layers, have been formulated by adopting the so-called Improved Lennard-Jones (ILJ) potential, which is far more accurate than the traditional Lennard-Jones potential. Previously derived ILJ force fields are used to perform extensive molecular dynamics simulations on graphene's ability to separate and adsorb the CH4/N2 mixture. Furthermore, the intramolecular interactions within graphene were explicitly considered since they are responsible for its flexibility and the consequent out-of-plane movements of the constituting carbon atoms. The effects on the adsorption capacity of graphene caused by introducing its flexibility in the simulations are assessed via comparison of different intramolecular force fields giving account of flexibility against a simplified less realistic model that considers graphene to be rigid. The accuracy of the potentials guarantees a quantitative description of the interactions and trustable results for the dynamics, as long as the appropriate set of intramolecular and intermolecular force fields is chosen. In particular it is shown that only if the flexibility of graphene is explicitly taken into account, a simple united-atom interaction potential can provide correct predictions. Conversely, when using an atomistic model, neglecting in the simulations the intrinsic flexibility of the graphene sheet has a minor effect. From a practical point of view, the global analysis of the whole set of results proves that these nanostructures are versatile materials competitive with other carbon-based adsorbing membranes suitable to cope with CH4 and N2 adsorption.
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Affiliation(s)
- Jelle Vekeman
- Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Perugia, Italy.,Instituto de Ciencia Molecular, Universidad de Valencia, Valencia, Spain
| | - Noelia Faginas-Lago
- Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Perugia, Italy.,Consortium for Computational Molecular and Materials Sciences (CMS2), Perugia, Italy
| | - Andrea Lombardi
- Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Perugia, Italy.,Consortium for Computational Molecular and Materials Sciences (CMS2), Perugia, Italy
| | | | | | - Marzio Rosi
- Dipartimento di Ingegneria Civile e Ambientale, Università degli Studi di Perugia, Perugia, Italy
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7
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Jaffe RL, Grover M, Venturi S, Schwenke DW, Valentini P, Schwartzentruber TE, Panesi M. Comparison of potential energy surfaces and computed rate coefficients for N 2 dissociation. JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER 2018; 32:869-881. [PMID: 31354184 PMCID: PMC6659417 DOI: 10.2514/1.t5417] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 08/12/2018] [Accepted: 08/14/2018] [Indexed: 06/10/2023]
Abstract
Comparisons are made between potential energy surfaces (PES) for N2 + N and N2 + N2 collisions and between rate coefficients for N2 dissociation that were computed using the quasiclassical trajectory method (QCT) on these PESs. For N2 + N we compare the Laganà's empirical LEPS surface with one from NASA Ames Research Center based on ab initio quantum chemistry calculations. For N2 + N2 we compare two ab initio PESs (from NASA Ames and from the University of Minnesota). These use different methods for computing the ground state electronic energy for N4, but give similar results. Thermal N2 dissociation rate coefficients, for the 10,000K-30,000K temperature range, have been computed using each PES and the results are in excellent agreement. Quasi-stationary state (QSS) rate coefficients using both PESs have been computed at these temperatures using the Direct Molecular Simulation of Schwartzentruber and coworkers. The QSS rate coefficients are up to a factor of 5 lower than the thermal ones and the thermal and QSS values bracket the results of shock-tube experiments. We conclude that the combination of ab initio quantum chemistry PESs and QCT calculations provides an attractive approach for the determination of accurate high-temperature rate coefficients for use in aerothermodynamics modeling.
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Affiliation(s)
- Richard L Jaffe
- NASA Ames Research Center Aerothermodynamics Branch, Mail Stop 230-3, Moffett Field, CA 94035-1000, Associate Fellow AIAA
| | - Maninder Grover
- Department of Aerospace Engineering and Mechanics, University of Minnesota, Minneapolis, MN 55455, Student Member AIAA
| | - Simone Venturi
- Department of Aerospace Engineering, University of Illinois at Urbana-Champaign, 104 Wright St., Urbana, IL 61801
| | - David W Schwenke
- NASA Ames Research Center, Computational Physics Branch, Mail Stop 258-3, Moffett Field, CA 94035-1000
| | - Paolo Valentini
- Department of Aerospace Engineering and Mechanics, University of Minnesota, Minneapolis, MN 55455
| | - Thomas E Schwartzentruber
- Department of Aerospace Engineering and Mechanics, University of Minnesota, Minneapolis, MN 55455, Senior Member AIAA
| | - Marco Panesi
- Department of Aerospace Engineering, University of Illinois at Urbana-Champaign, 306 Talbot Lab, 104 Wright St., Urbana, IL 61801, Senior Member AIAA
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8
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Lombardi A, Palazzetti F. Chirality in molecular collision dynamics. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2018; 30:063003. [PMID: 29350184 DOI: 10.1088/1361-648x/aaa1c8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Chirality is a phenomenon that permeates the natural world, with implications for atomic and molecular physics, for fundamental forces and for the mechanisms at the origin of the early evolution of life and biomolecular homochirality. The manifestations of chirality in chemistry and biochemistry are numerous, the striking ones being chiral recognition and asymmetric synthesis with important applications in molecular sciences and in industrial and pharmaceutical chemistry. Chiral discrimination phenomena, due to the existence of two enantiomeric forms, very well known in the case of interaction with light, but still nearly disregarded in molecular collision studies. Here we review some ideas and recent advances about the role of chirality in molecular collisions, designing and illustrating molecular beam experiments for the demonstration of chiral effects and suggesting a scenario for a stereo-directional origin of chiral selection.
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Affiliation(s)
- Andrea Lombardi
- Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia, Via Elce di Sotto 8, 06123, Perugia, Italy. Consortium for Computational Molecular and Materials Sciences (CMS)2, Via Elce di Sotto, 8, 06123 Perugia, Italy
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9
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Kurnosov A, Cacciatore M, Pirani F, Laganà A, Martí C, Garcia E. Closer versus Long Range Interaction Effects on the Non-Arrhenius Behavior of Quasi-Resonant O 2 + N 2 Collisions. J Phys Chem A 2017; 121:5088-5099. [PMID: 28598167 DOI: 10.1021/acs.jpca.7b04204] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report in this paper an investigation on energy transfer processes from vibration to vibration and/or translation in thermal and subthermal regimes for the O2 + N2 system performed using quantum-classical calculations on different empirical, semiempirical, and ab initio potential energy surfaces. In particular, the paper focuses on the rationalization of the non-Arrhenius behavior (inversion of the temperature dependence) of the quasi-resonant vibration-to-vibration energy transfer transition rate coefficients at threshold. To better understand the microscopic nature of the involved processes, we pushed the calculations to the detail of the related cross sections and analyzed the impact of the medium and long-range components of the interaction on them. Furthermore, the variation with temperature of the dependence of the quasi-resonant rate coefficient on the vibrational energy gap between initial and final vibrational states and the effectiveness of quantum-classical calculations to overcome the limitations of the purely classical treatments were also investigated. These treatments, handled in an open molecular science fashion by chaining data and competencies of the various laboratories using a grid empowered molecular simulator, have allowed a rationalization of the dependence of the computed rate coefficients in terms of the distortion of the O2-N2 configuration during the diatom-diatom collisions. A way of relating such distortions to a smooth and continuous progress variable, allowing a proper evolution from both long to closer range formulation of the interaction and from its entrance to exit channel (through the strong interaction region) relaxed graphical representations, is also discussed in the paper.
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Affiliation(s)
- A Kurnosov
- Troitsk Institute of Innovation and Fusion Research , 142092 Troitsk, Moscow, Russia
| | - M Cacciatore
- Nanotec-Institute for Nanotechnology, CNR , Via Amendola 122/D, 70126 Bari, Italy
| | - F Pirani
- Nanotec-Institute for Nanotechnology, CNR , Via Amendola 122/D, 70126 Bari, Italy.,Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia , 06123 Perugia, Italy
| | - A Laganà
- Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia , 06123 Perugia, Italy
| | - C Martí
- Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia , 06123 Perugia, Italy
| | - E Garcia
- Departamento de Quimica Fisica, Universidad del Pais Vasco (UPV/EHU) , 01006 Vitoria, Spain
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10
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Garcia E, Pirani F, Laganà A, Martí C. The role of the long-range tail of the potential in O 2 + N 2 collisional inelastic vibrational energy transfers. Phys Chem Chem Phys 2017; 19:11206-11211. [PMID: 28405660 DOI: 10.1039/c7cp01340j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the study of non-reactive energy transfer between O2 and N2 molecules bearing different vibrationally excited states we have faced the problem of selecting a proper formulation of the interaction. To this end we have compared the values of the related observables computed either on a potential energy surface globally fitted to very large ab initio potential energy values [Varga et al., J. Chem. Phys., 2016, 144, 024310] or on two more traditional ones formulated as a combination of an intra- and inter-molecular model component of the interaction (and based on a different combined use of experimental and ab initio information) [Garcia et al., J. Phys. Chem. A, 2016, 120, 5208] in order to enforce an appropriate modelling of the long-range tail of the potential, crucial for the description of inelastic vibrational energy transfer. A detailed graphical analysis of the potential plus a quantitative analysis of the computed opacity functions, of the state-to-state rate coefficients, of the second virial coefficient and of the integral non-reactive cross section allowed us to conclude that the model formulation of the interaction has to be preferred for non-reactive studies of the O2 + N2 energy transfer processes in thermal and subthermal regimes.
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Affiliation(s)
- Ernesto Garcia
- Departamento de Quimica Fisica, Universidad del Pais Vasco (UPV/EHU), 01006 Vitoria, Spain.
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11
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12
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Lombardi A, Pirani F, Laganà A, Bartolomei M. Energy transfer dynamics and kinetics of elementary processes (promoted) by gas-phase CO2 -N2 collisions: Selectivity control by the anisotropy of the interaction. J Comput Chem 2016; 37:1463-75. [PMID: 27031183 DOI: 10.1002/jcc.24359] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Revised: 02/01/2016] [Accepted: 02/22/2016] [Indexed: 11/10/2022]
Abstract
In this work, we exploit a new formulation of the potential energy and of the related computational procedures, which embodies the coupling between the intra and intermolecular components, to characterize possible propensities of the collision dynamics in energy transfer processes of interest for simulation and control of phenomena occurring in a variety of equilibrium and nonequilibrium environments. The investigation reported in the paper focuses on the prototype CO2 -N2 system, whose intramolecular component of the interaction is modeled in terms of a many body expansion while the intermolecular component is modeled in terms of a recently developed bonds-as-interacting-molecular-centers' approach. The main advantage of this formulation of the potential energy surface is that of being (a) truly full dimensional (i.e., all the variations of the coordinates associated with the molecular vibrations and rotations on the geometrical and electronic structure of the monomers, are explicitly taken into account without freezing any bonds or angles), (b) more flexible than other usual formulations of the interaction and (c) well suited for fitting procedures better adhering to accurate ab initio data and sensitive to experimental arrangement dependent information. Specific attention has been given to the fact that a variation of vibrational and rotational energy has a higher (both qualitative and quantitative) impact on the energy transfer when a more accurate formulation of the intermolecular interaction (with respect to that obtained when using rigid monomers) is adopted. This makes the potential energy surface better suited for the kinetic modeling of gaseous mixtures in plasma, combustion and atmospheric chemistry computational applications. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Andrea Lombardi
- Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia, via Elce di Sotto 8, Perugia, 06123, Italy
| | - Fernando Pirani
- Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia, via Elce di Sotto 8, Perugia, 06123, Italy
| | - Antonio Laganà
- Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia, via Elce di Sotto 8, Perugia, 06123, Italy
| | - Massimiliano Bartolomei
- Instituto de Física Fundamental, Consejo Superior de Investigaciones Científicas, Serrano 123, Madrid, 28006, Spain
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13
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Lombardi A, Faginas-Lago N, Pacifici L, Grossi G. Energy transfer upon collision of selectively excited CO2 molecules: State-to-state cross sections and probabilities for modeling of atmospheres and gaseous flows. J Chem Phys 2015. [PMID: 26203027 DOI: 10.1063/1.4926880] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Carbon dioxide molecules can store and release tens of kcal/mol upon collisions, and such an energy transfer strongly influences the energy disposal and the chemical processes in gases under the extreme conditions typical of plasmas and hypersonic flows. Moreover, the energy transfer involving CO2 characterizes the global dynamics of the Earth-atmosphere system and the energy balance of other planetary atmospheres. Contemporary developments in kinetic modeling of gaseous mixtures are connected to progress in the description of the energy transfer, and, in particular, the attempts to include non-equilibrium effects require to consider state-specific energy exchanges. A systematic study of the state-to-state vibrational energy transfer in CO2 + CO2 collisions is the focus of the present work, aided by a theoretical and computational tool based on quasiclassical trajectory simulations and an accurate full-dimension model of the intermolecular interactions. In this model, the accuracy of the description of the intermolecular forces (that determine the probability of energy transfer in molecular collisions) is enhanced by explicit account of the specific effects of the distortion of the CO2 structure due to vibrations. Results show that these effects are important for the energy transfer probabilities. Moreover, the role of rotational and vibrational degrees of freedom is found to be dominant in the energy exchange, while the average contribution of translations, under the temperature and energy conditions considered, is negligible. Remarkable is the fact that the intramolecular energy transfer only involves stretching and bending, unless one of the colliding molecules has an initial symmetric stretching quantum number greater than a threshold value estimated to be equal to 7.
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Affiliation(s)
- A Lombardi
- Dipartimento di Chimica, Università di Perugia, via Elce di Sotto 8, 06123 Perugia, Italy
| | - N Faginas-Lago
- Dipartimento di Chimica, Università di Perugia, via Elce di Sotto 8, 06123 Perugia, Italy
| | - L Pacifici
- Dipartimento di Chimica, Università di Perugia, via Elce di Sotto 8, 06123 Perugia, Italy
| | - G Grossi
- Dipartimento di Chimica, Università di Perugia, via Elce di Sotto 8, 06123 Perugia, Italy
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14
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Accurate analytic intermolecular potential for the simulation of Na+ and K+ ion hydration in liquid water. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.01.029] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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15
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Kurnosov A, Cacciatore M, Laganà A, Pirani F, Bartolomei M, Garcia E. The effect of the intermolecular potential formulation on the state‐selected energy exchange rate coefficients in N
2
–N
2
collisions. J Comput Chem 2014; 35:722-36. [DOI: 10.1002/jcc.23545] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Revised: 12/23/2013] [Accepted: 12/27/2013] [Indexed: 11/06/2022]
Affiliation(s)
- Alexander Kurnosov
- Troitsk Institute of Innovation and Fusion ResearchTroitsk142092 Moscow Russia
| | - Mario Cacciatore
- CNR‐IMIP (Institute of Inorganic Methodologies and Plasmas)Via Amendola 122/DBari70126 Italy
| | - Antonio Laganà
- Dipartimento di ChimicaUniversità di PerugiaPerugia06100 Italy
| | - Fernando Pirani
- Dipartimento di ChimicaUniversità di PerugiaPerugia06100 Italy
| | - Massimiliano Bartolomei
- Instituto de Física Fundamental, Consejo Superior de Investigaciones Científicas (IFF‐CSIC)Serrano 123Madrid28006 Spain
| | - Ernesto Garcia
- Departamento de Química FísicaUniversidad del País Vasco (UPV/EHU)Vitoria01006 Spain
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16
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Lombardi A, Faginas-Lago N, Pacifici L, Costantini A. Modeling of Energy Transfer From Vibrationally Excited CO2 Molecules: Cross Sections and Probabilities for Kinetic Modeling of Atmospheres, Flows, and Plasmas. J Phys Chem A 2013; 117:11430-40. [PMID: 24117231 DOI: 10.1021/jp408522m] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrea Lombardi
- Dipartimento di Chimica, Università di Perugia, via Elce
di Sotto 8, 06123 Perugia, Italy
| | - Noelia Faginas-Lago
- Dipartimento di Chimica, Università di Perugia, via Elce
di Sotto 8, 06123 Perugia, Italy
| | - Leonardo Pacifici
- Dipartimento di Chimica, Università di Perugia, via Elce
di Sotto 8, 06123 Perugia, Italy
| | - Alessandro Costantini
- Dipartimento di Chimica, Università di Perugia, via Elce
di Sotto 8, 06123 Perugia, Italy
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