1
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Ritika, Chhabra S, Dhilip Kumar TJ. Electronic structure calculations and quantum dynamics of rotational deexcitation of CNNC by He. Phys Chem Chem Phys 2022; 24:2785-2793. [PMID: 35039815 DOI: 10.1039/d1cp04273d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The quantum dynamics of rotational transitions of the diisocyanogen (CNNC) molecule undergoing collision with the helium (He) atom occurring in the interstellar medium (ISM) has been studied. The rotational deexcitation cross sections are extracted by first computing an ab initio potential energy surface of CNNC-He using the coupled-cluster with single and double and perturbative triple excitations with the F12a method (CCSD(T)-F12a) employing the aug-cc-pVTZ basis set. Utilizing the multipole expansions, collisional cross sections are determined for total energies of up to 1000 cm-1 by the close coupling equations. The discussion on propensity rules suggests that the transitions have even Δj values, while odd Δj valued transitions are forbidden due to C and N nuclei spin statistics. Quasi-bound states present in the CNNC-He van der Waals complex resulted in the resonances coming from the rapid oscillations in the values of the cross sections in the region of low energy. Rotational deexcitation rate coefficients are further worked out by averaging the calculated cross sections at temperatures below 200 K. The new findings of the study will be beneficial in modeling the abundance of diisocyanogen in the ISM.
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Affiliation(s)
- Ritika
- Quantum Dynamics Lab, Department of Chemistry, Indian Institute of Technology, Ropar, Rupnagar 140001, India.
| | - Sanchit Chhabra
- Quantum Dynamics Lab, Department of Chemistry, Indian Institute of Technology, Ropar, Rupnagar 140001, India.
| | - T J Dhilip Kumar
- Quantum Dynamics Lab, Department of Chemistry, Indian Institute of Technology, Ropar, Rupnagar 140001, India.
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2
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Kłos J, Guan Q, Li H, Li M, Tiesinga E, Kotochigova S. Roaming pathways and survival probability in real-time collisional dynamics of cold and controlled bialkali molecules. Sci Rep 2021; 11:10598. [PMID: 34011983 PMCID: PMC8134521 DOI: 10.1038/s41598-021-90004-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 04/30/2021] [Indexed: 11/25/2022] Open
Abstract
Perfectly controlled molecules are at the forefront of the quest to explore chemical reactivity at ultra low temperatures. Here, we investigate for the first time the formation of the long-lived intermediates in the time-dependent scattering of cold bialkali \documentclass[12pt]{minimal}
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\begin{document}$$^{23}\hbox {Na}^{87}$$\end{document}23Na87Rb molecules with and without the presence of infrared trapping light. During the nearly 50 nanoseconds mean collision time of the intermediate complex, we observe unconventional roaming when for a few tens of picoseconds either NaRb or \documentclass[12pt]{minimal}
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\begin{document}$$\hbox {Na}_2$$\end{document}Na2 and \documentclass[12pt]{minimal}
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\begin{document}$$\hbox {Rb}_2$$\end{document}Rb2 molecules with large relative separation are formed before returning to the four-atom complex. We also determine the likelihood of molecular loss when the trapping laser is present during the collision. We find that at a wavelength of 1064 nm the \documentclass[12pt]{minimal}
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\begin{document}$$\hbox {Na}_2\hbox {Rb}_2$$\end{document}Na2Rb2 complex is quickly destroyed and thus that the \documentclass[12pt]{minimal}
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\begin{document}$$^{23}\hbox {Na}^{87}$$\end{document}23Na87Rb molecules are rapidly lost.
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Affiliation(s)
- Jacek Kłos
- Department of Physics, Temple University, Philadelphia, PA, 19122, USA.,Joint Quantum Institute, University of Maryland, College Park, MD, 20742, USA
| | - Qingze Guan
- Department of Physics, Temple University, Philadelphia, PA, 19122, USA
| | - Hui Li
- Department of Physics, Temple University, Philadelphia, PA, 19122, USA
| | - Ming Li
- Department of Physics, Temple University, Philadelphia, PA, 19122, USA
| | - Eite Tiesinga
- Joint Quantum Institute, University of Maryland, College Park, MD, 20742, USA.,National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA
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3
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Orek C, Umiński M, Kłos J, Lique F, Zuchowski PS, Bulut N. NO+ + H2: Potential energy surface and bound state calculations. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.138511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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4
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Simkó I, Szidarovszky T, Császár AG. Toward Automated Variational Computation of Rovibrational Resonances, Including a Case Study of the H 2 Dimer. J Chem Theory Comput 2019; 15:4156-4169. [PMID: 31145598 DOI: 10.1021/acs.jctc.9b00314] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A general and semi-automatic technique, based on the complex absorbing potential (CAP) method, is developed for the variational computation and identification of rotational-vibrational resonance states. This technique is an extension of a method introduced by Tremblay and Carrington ( J. Chem. Phys. 2005, 122, 244107 ), and it employs the damped eigenvectors of a CAP-modified Hamiltonian as a basis to describe resonance wave functions. The low-lying resonances of the weakly bound Ar·NO+ complex are computed with the new and the traditional CAP techniques to test the new algorithm. As an additional, more challenging test case, the bound and resonance rovibrational states of the H2 dimer, the latter with both negative and positive binding energies, are determined, corresponding to different rotational excitations of the H2 monomers. Resonances above the first few dissociation channels of (H2)2 are computed with the new and the traditional CAP methods, revealing some new, assigned resonance quantum states not reported in the literature.
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Affiliation(s)
- Irén Simkó
- Laboratory of Molecular Structure and Dynamics, Institute of Chemistry , ELTE Eötvös Loránd University , Pázmány Péter sétány 1/A , H-1117 Budapest , Hungary
| | - Tamás Szidarovszky
- Laboratory of Molecular Structure and Dynamics, Institute of Chemistry , ELTE Eötvös Loránd University , Pázmány Péter sétány 1/A , H-1117 Budapest , Hungary.,MTA-ELTE Complex Chemical Systems Research Group , ELTE Eötvös Loránd University , Pázmány Péter sétány 1/A , H-1117 Budapest , Hungary
| | - Attila G Császár
- Laboratory of Molecular Structure and Dynamics, Institute of Chemistry , ELTE Eötvös Loránd University , Pázmány Péter sétány 1/A , H-1117 Budapest , Hungary.,MTA-ELTE Complex Chemical Systems Research Group , ELTE Eötvös Loránd University , Pázmány Péter sétány 1/A , H-1117 Budapest , Hungary
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5
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Mohamed D, Ben Mohamed FE, Amdouni MA, Ben El Hadj Rhouma M, Linguerri R, Hochlaf M. Exploration of large amplitude motions in the Ca +Ar 2 complex. Mol Phys 2019. [DOI: 10.1080/00268976.2019.1593533] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- D. Mohamed
- Laboratoire de Recherche d’Etude des Milieux Ionisés et Réactifs (EMIR), Institut Préparatoire aux Etudes d’Ingénieurs de Monastir, Université de Monastir, Tunisia
| | - F. E. Ben Mohamed
- Laboratoire de Recherche d’Etude des Milieux Ionisés et Réactifs (EMIR), Institut Préparatoire aux Etudes d’Ingénieurs de Monastir, Université de Monastir, Tunisia
| | - M. A. Amdouni
- Institut Préparatoire aux Etudes d’Ingénieurs de Bizerte, Université de Carthage, Tunisia
| | - M. Ben El Hadj Rhouma
- Laboratoire de Recherche d’Etude des Milieux Ionisés et Réactifs (EMIR), Institut Préparatoire aux Etudes d’Ingénieurs de Monastir, Université de Monastir, Tunisia
| | - R. Linguerri
- Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS Marne-la-Vallée, France
| | - M. Hochlaf
- Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS Marne-la-Vallée, France
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6
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Lara-Moreno M, Stoecklin T, Halvick P. Potential energy surface and rovibrational bound states of the H 2-C 3N - van der Waals complex. Phys Chem Chem Phys 2019; 21:2929-2937. [PMID: 30675889 DOI: 10.1039/c8cp07727d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Since their recent detection in the interstellar medium, anions have raised the question of their possible mechanisms of formation, destruction and excitation. This requires knowledge of their interaction with the most abundant interstellar species. In the present work, a four dimensional rigid rotor model of the potential energy surface is developed for the collision of C3N- with H2. Ab initio calculations are performed with explicitly-correlated coupled-cluster theory via CCSD(T)-F12/aug-cc-pVTZ. Two linear equilibrium structures are found, different in the orientation of C3N-. Two more equilibrium structures, symmetrically equivalent, are obtained by the permutation of H atoms. The vibrational dynamics is mainly controlled by the considerable difference between the two bending frequencies that correspond to the hindered rotations of C3N- and H2. This arises from the potential energy surface which is soft for rotation of C3N- and stiff for rotation of H2, and also from the large difference in mass between both monomers. Although a high potential barrier prevents the rotation of H2, a significant tunneling effect is observed which causes a splitting in the degenerate energy levels. On the contrary, the rotation of C3N- is allowed since the energy of the saddle points is lower than the energy of the bound states, but the wavefunctions remain localized around each linear structure unless a large excitation energy is available.
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7
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Stoecklin T, Halvick P, Lara-Moreno M, Trabelsi T, Hochlaf M. On the gas-phase formation of the HCO - anion: accurate quantum study of the H - + CO radiative association and HCO radiative electron attachment. Faraday Discuss 2018; 212:101-116. [PMID: 30234209 DOI: 10.1039/c8fd00103k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The hydrogen anion has never been observed in the interstellar medium, but it is most likely present in some interstellar regions. Since direct detection appears especially difficult, improving the knowledge of the astrochemical processes involving this anion should be valuable in defining a way of indirect detection. We present the first study of the radiative association of H- and CO to form the HCO- anion within a quantum time-independent approach. We use a state-of-the-art potential energy surface which has been calculated for the present study. The calculated radiative association rate coefficient is monotonically decreasing from 6 × 10-16 to 5 × 10-19 cm3 per molecule per s across the 0.01-1000 K temperature range. At the typical temperature of the cold interstellar medium, ∼10 K, the radiative association rate is ∼2 × 10-17 cm3 per molecule per s. On the other hand, the plane wave approximation is used to calculate the HCO radiative electron attachment rate coefficient. It is found to be almost constant and also equal to 2 × 10-17 cm3 per molecule per s. Setting aside the question of the abundances of the reactants of both processes, these results demonstrate that among the two gas-phase modes of production of the HCO- anion in cold interstellar medium considered in this study, the H- + CO radiative association is dominating below 10 K while the radiative electron attachment rate is larger above 10 K.
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Affiliation(s)
- Thierry Stoecklin
- Université de Bordeaux, Institut des Sciences Moléculaires, CNRS-UMR5255, 33405 Talence Cedex, France.
| | - Philippe Halvick
- Université de Bordeaux, Institut des Sciences Moléculaires, CNRS-UMR5255, 33405 Talence Cedex, France.
| | - Miguel Lara-Moreno
- Université de Bordeaux, Institut des Sciences Moléculaires, CNRS-UMR5255, 33405 Talence Cedex, France.
| | - Tarek Trabelsi
- Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, CNRS-UMR8208, 77454 Marne-la-Vallée, France
| | - Majdi Hochlaf
- Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, CNRS-UMR8208, 77454 Marne-la-Vallée, France
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8
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Hu J, Wu CX, Ma Y, Tian SX. Collision-Energy Dependence of the Ion–Molecule Charge Exchange Reaction Ar+ + NO. J Phys Chem A 2018; 122:9171-9176. [DOI: 10.1021/acs.jpca.8b08005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jie Hu
- Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Chun-Xiao Wu
- Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Yunsheng Ma
- Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Shan Xi Tian
- Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
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9
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Ben Abdallah D, Al Mogren MM, Dhaif Allah Al Harbi S, Hochlaf M. Rotational (de-)excitation of isocyanogen by collision with helium at low energies. J Chem Phys 2018; 149:064305. [PMID: 30111146 DOI: 10.1063/1.5043481] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Isocyanogen, CNCN, was discovered very recently in the interstellar medium (ISM). At present, the rate coefficients for the rotational (de-)excitation of CNCN by collisions with He are determined. First, we mapped the interaction potential between CNCN and He in Jacobi coordinates using highly correlated ab initio methodology. Then, an analytical expansion of the CNCN-He potential energy surface is derived. Later on, quantum dynamical treatments of nuclear motions are performed using the close coupling technique. We obtained the cross sections for the rotational (de-)excitation of CNCN after a collision by He up to 2000 cm-1 total energies. These cross sections are used to deduce the collision rates in the 10-300 K range. These data are needed for modeling the CNCN abundances in the ISM. This work should help for determining the abundance of such non-symmetrical dicyanopolyynes in astrophysical media and indirectly the symmetric one [Cyanogen (NCCN)].
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Affiliation(s)
- D Ben Abdallah
- Laboratoire de Dynamique Moléculaire et Matériaux Photoniques, Université de Tunis, Ecole Nationale Supérieure d'Ingénieurs de Tunis, 5 Av Taha Hussein, 1008 Tunis, Tunisia and Laboratoire de Spectroscopie Atomique, Moléculaire et Applications - LSAMA, Université de Tunis, Tunis, Tunisia
| | - M Mogren Al Mogren
- Chemistry Department, Faculty of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Kingdom of Saudi Arabia
| | - S Dhaif Allah Al Harbi
- Chemistry Department, Faculty of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Kingdom of Saudi Arabia
| | - M Hochlaf
- Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, Université Paris-Est, 5 Blvd. Descartes, 77454 Marne-la-Vallée, France
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10
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Kesharwani MK, Manna D, Sylvetsky N, Martin JML. The X40×10 Halogen Bonding Benchmark Revisited: Surprising Importance of (n–1)d Subvalence Correlation. J Phys Chem A 2018; 122:2184-2197. [DOI: 10.1021/acs.jpca.7b10958] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Manoj K. Kesharwani
- Department of Organic Chemistry, Weizmann Institute of Science, 76100 Reḥovot, Israel
| | - Debashree Manna
- Department of Organic Chemistry, Weizmann Institute of Science, 76100 Reḥovot, Israel
| | - Nitai Sylvetsky
- Department of Organic Chemistry, Weizmann Institute of Science, 76100 Reḥovot, Israel
| | - Jan M. L. Martin
- Department of Organic Chemistry, Weizmann Institute of Science, 76100 Reḥovot, Israel
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11
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Dong YY, Zhang CY, Wang BQ. Trends in Geometric, Energetic, Electronic, and Magnetic Properties of Vanadium–Copper Clusters Cu
n
V with n = 1–12: Density Functional Calculations. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2018. [DOI: 10.1134/s0036024417130295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Hammami H, Ben Mohamed F, Mohamed D, Ben El Hadj Rhouma M, Al Mogren MM, Hochlaf M. One-electron pseudo-potential investigation of NO(X 2Π)–Ar n clusters ( n = 1,2,3,4). Mol Phys 2017. [DOI: 10.1080/00268976.2017.1337252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- H. Hammami
- Laboratoire de Recherche d'Etude des Milieux Ionisés et Réactifs (EMIR), Institut Préparatoire aux Etudes d'Ingénieurs, Université de Monastir, Tunisie
| | - F.E. Ben Mohamed
- Laboratoire de Recherche d'Etude des Milieux Ionisés et Réactifs (EMIR), Institut Préparatoire aux Etudes d'Ingénieurs, Université de Monastir, Tunisie
| | - D. Mohamed
- Laboratoire de Recherche d'Etude des Milieux Ionisés et Réactifs (EMIR), Institut Préparatoire aux Etudes d'Ingénieurs, Université de Monastir, Tunisie
| | - M. Ben El Hadj Rhouma
- Laboratoire de Recherche d'Etude des Milieux Ionisés et Réactifs (EMIR), Institut Préparatoire aux Etudes d'Ingénieurs, Université de Monastir, Tunisie
| | - M. M. Al Mogren
- Chemistry Department, Faculty of Science, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - M. Hochlaf
- Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, Université Paris-Est, Marne-la-Vallée, France
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13
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Tashakor S, Noorbala MR, Namazian M. Ab initio study of the intermolecular potential energy surface for the ground electronic state of the O2–CO system and prediction of second virial coefficients. Theor Chem Acc 2017. [DOI: 10.1007/s00214-017-2158-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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14
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Bop CT, Trabelsi T, Hammami K, Mogren Al Mogren M, Lique F, Hochlaf M. Cold collisions of SH− with He: Potential energy surface and rate coefficients. J Chem Phys 2017; 147:124301. [DOI: 10.1063/1.4994970] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- C. T. Bop
- Laboratory of Atoms Lasers, Department of Physics, Faculty of Sciences and Techniques, University Cheikh Anta Diop of Dakar, Dakar, Senegal
| | - T. Trabelsi
- Laboratory of Atomic Molecular Spectroscopy and Applications, Department of Physics, Faculty of Sciences, University Tunis El Manar, Campus Universities, 1060 Tunis, Tunisia
| | - K. Hammami
- Laboratory of Atomic Molecular Spectroscopy and Applications, Department of Physics, Faculty of Sciences, University Tunis El Manar, Campus Universities, 1060 Tunis, Tunisia
| | - M. Mogren Al Mogren
- Chemistry Department, Faculty of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Kingdom of Saudi Arabia
| | - F. Lique
- LOMC-UMR 6294, CNRS-Université du Havre, 25 Rue Philippe Lebon, BP 1123, 76 063 Le Havre Cedex, France
| | - M. Hochlaf
- Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, 5 Blvd. Descartes, F-77454 Marne-la-Vallée, France
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15
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Papp D, Sarka J, Szidarovszky T, Császár AG, Mátyus E, Hochlaf M, Stoecklin T. Complex rovibrational dynamics of the Ar·NO + complex. Phys Chem Chem Phys 2017; 19:8152-8160. [PMID: 28225106 DOI: 10.1039/c6cp07731e] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Rotational-vibrational states of the Ar·NO+ cationic complex are computed, below, above, and well above the complex's first dissociation energy, using variational nuclear motion and close-coupling scattering computations. The HSLH potential energy surface used in this study (J. Chem. Phys., 2011, 135, 044312) is characterized by a first dissociation energy of D0 = 887.0 cm-1 and supports 200 bound vibrational states. The bound-state vibrational energies and the corresponding wave functions allow the interpretation of the scarcely available experimental results about the intermonomer vibrational motion of the complex. A very large number of long-lived quasibound combination states of the three vibrational modes, exhibiting a very similar energy-level structure as that of the bound states, are found embedded in the continuum. Additional short-lived resonance states are also identified and their properties are analyzed.
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Affiliation(s)
- Dóra Papp
- MTA-ELTE Complex Chemical Systems Research Group, P.O. Box 32, H-1518 Budapest 112, Hungary.
| | - János Sarka
- MTA-ELTE Complex Chemical Systems Research Group, P.O. Box 32, H-1518 Budapest 112, Hungary.
| | - Tamás Szidarovszky
- MTA-ELTE Complex Chemical Systems Research Group, P.O. Box 32, H-1518 Budapest 112, Hungary.
| | - Attila G Császár
- MTA-ELTE Complex Chemical Systems Research Group, P.O. Box 32, H-1518 Budapest 112, Hungary.
| | - Edit Mátyus
- Institute of Chemistry, Eötvös University, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary
| | - Majdi Hochlaf
- Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, 5 bd Descartes, F-77454 Marne-la-Vallée, France
| | - Thierry Stoecklin
- Institut des Sciences Moléculaires, Université de Bordeaux, CNRS UMR 5255, 33405 Talence Cedex, France.
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16
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Hochlaf M. Advances in spectroscopy and dynamics of small and medium sized molecules and clusters. Phys Chem Chem Phys 2017; 19:21236-21261. [DOI: 10.1039/c7cp01980g] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Investigations of the spectroscopy and dynamics of small- and medium-sized molecules and clusters represent a hot topic in atmospheric chemistry, biology, physics, atto- and femto-chemistry and astrophysics.
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Affiliation(s)
- Majdi Hochlaf
- Université Paris-Est
- Laboratoire Modélisation et Simulation Multi Echelle
- MSME UMR 8208 CNRS
- 77454 Marne-la-Vallée
- France
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17
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Orek C, Kłos J, Lique F, Bulut N. Ab initio studies of the Rg-NO(+)(X(1)Σ(+)) van der Waals complexes (Rg = He, Ne, Ar, Kr, and Xe). J Chem Phys 2016; 144:204303. [PMID: 27250302 DOI: 10.1063/1.4950813] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We used the explicitly correlated variant of the coupled clusters method with single, double, and noniterative triple excitations [CCSD(T)-F12] to compute two-dimensional potential energy surfaces of van der Waals complexes formed by rare gas atoms (Rg) and NO(+)(X(1)Σ(+)) cations. We used the correlation-consistent, triple-zeta (cc-pVTZ-F12) atomic basis sets, and for Kr and Xe rare gases, we employed corresponding pseudopotential cc-pVTZ-PP-F12 atomic basis sets. These basis sets were additionally augmented with mid-bond functions. The complexes are all of skewed T-shape type with Rg atom being closer to the N-side. Using analytical representation of the potentials, we have estimated zero-point energy corrected dissociation energies from anharmonic calculations with BOUND program and also from the harmonic approximation. The binding energies increase with the polarization of the Rg atom in series from He to Xe and are 196 cm(-1), 360 cm(-1), 1024 cm(-1), 1434 cm(-1), and 2141 cm(-1), respectively. Their corresponding dissociation energies are 132 cm(-1), 300 cm(-1), 927 cm(-1), 1320 cm(-1), and 1994 cm(-1) for the complexes with He to Xe, respectively. We find good agreement with previous theoretical and experimental results. The harmonic vibrational frequencies were calculated for the bending and stretching modes of the Rg-NO(+) complexes.
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Affiliation(s)
- Cahit Orek
- Physics Department, Faculty of Science, Firat University, Elazig, Turkey
| | - Jacek Kłos
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA
| | - François Lique
- LOMC-UMR 6294, CNRS-Université du Havre, 25 rue Philippe Lebon, BP 1123, 76063 Le Havre, France
| | - Niyazi Bulut
- Physics Department, Faculty of Science, Firat University, Elazig, Turkey
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18
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Stoecklin T, Halvick P, Gannouni MA, Hochlaf M, Kotochigova S, Hudson ER. Explanation of efficient quenching of molecular ion vibrational motion by ultracold atoms. Nat Commun 2016; 7:11234. [PMID: 27088647 PMCID: PMC4837476 DOI: 10.1038/ncomms11234] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 03/03/2016] [Indexed: 11/09/2022] Open
Abstract
Buffer gas cooling of molecules to cold and ultracold temperatures is a promising technique for realizing a host of scientific and technological opportunities. Unfortunately, experiments using cryogenic buffer gases have found that although the molecular motion and rotation are quickly cooled, the molecular vibration relaxes at impractically long timescales. Here, we theoretically explain the recently observed exception to this rule: efficient vibrational cooling of BaCl(+) by a laser-cooled Ca buffer gas. We perform intense close-coupling calculations that agree with the experimental result, and use both quantum defect theory and a statistical capture model to provide an intuitive understanding of the system. This result establishes that, in contrast to the commonly held opinion, there exists a large class of systems that exhibit efficient vibrational cooling and therefore supports a new route to realize the long-sought opportunities offered by molecular structure.
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Affiliation(s)
- Thierry Stoecklin
- Université de Bordeaux, Institut des Sciences Moléculaires, UMR 5255 CNRS, 33405 Talence, France
| | - Philippe Halvick
- Université de Bordeaux, Institut des Sciences Moléculaires, UMR 5255 CNRS, 33405 Talence, France
| | - Mohamed Achref Gannouni
- Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, 5 bd Descartes, 77454 Marne-la-Vallée, France
| | - Majdi Hochlaf
- Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, 5 bd Descartes, 77454 Marne-la-Vallée, France
| | - Svetlana Kotochigova
- Department of Physics, Temple University, 1925 N 12th Street, Philadelphia, Pennsylvania 19122, USA
| | - Eric R. Hudson
- Department of Physics and Astronomy, University of California, 475 Portola Plaza, Los Angeles, California 90095, USA
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19
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Boulmène R, Prakash M, Hochlaf M. Microscopic investigations of site and functional selectivity of triazole for CO2 capture and catalytic applications. Phys Chem Chem Phys 2016; 18:29709-29720. [DOI: 10.1039/c6cp04650a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ab initio and DFT studies on CO2 interacting with different tautomers and isomers of triazole (TZ) are carried out to understand the adsorption mechanism, site selectivity and their mutual preferential attracting sites.
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Affiliation(s)
- Reda Boulmène
- Université Paris-Est
- Laboratoire Modélisation et Simulation Multi Echelle
- MSME UMR 8208 CNRS
- 5 Bd Descartes
- 77454 Marne- La-Vallée
| | - Muthuramalingam Prakash
- Université Paris-Est
- Laboratoire Modélisation et Simulation Multi Echelle
- MSME UMR 8208 CNRS
- 5 Bd Descartes
- 77454 Marne- La-Vallée
| | - Majdi Hochlaf
- Université Paris-Est
- Laboratoire Modélisation et Simulation Multi Echelle
- MSME UMR 8208 CNRS
- 5 Bd Descartes
- 77454 Marne- La-Vallée
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20
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Ben Mohamed FE, Slama M, Hammami H, Ben El Hadj Rhouma M, Hochlaf M. Microsolvation of NO+in Arnclusters: A theoretical treatment. J Chem Phys 2015; 142:204309. [DOI: 10.1063/1.4921254] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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21
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Nasri S, Ajili Y, Jaidane NE, Kalugina YN, Halvick P, Stoecklin T, Hochlaf M. Potential energy surface of the CO2-N2 van der Waals complex. J Chem Phys 2015; 142:174301. [PMID: 25956094 DOI: 10.1063/1.4919396] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Four-dimensional potential energy surface (4D-PES) of the atmospherically relevant CO2-N2 van der Waals complex is generated using the explicitly correlated coupled cluster with single, double, and perturbative triple excitation (CCSD(T)-F12) method in conjunction with the augmented correlation consistent triple zeta (aug-cc-pVTZ) basis set. This 4D-PES is mapped along the intermonomer coordinates. An analytic fit of this 4D-PES is performed. Our extensive computations confirm that the most stable form corresponds to a T-shape structure where the nitrogen molecule points towards the carbon atom of CO2. In addition, we located a second isomer and two transition states in the ground state PES of CO2-N2. All of them lay below the CO2 + N2 dissociation limit. This 4D-PES is flat and strongly anisotropic along the intermonomer coordinates. This results in the possibility of the occurrence of large amplitude motions within the complex, such as the inversion of N2, as suggested in the recent spectroscopic experiments. Finally, we show that the experimentally established deviations from the C2v structure at equilibrium for the most stable isomer are due to the zero-point out-of-plane vibration correction.
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Affiliation(s)
- Sameh Nasri
- Laboratoire de Spectroscopie Atomique, Moléculaire et Applications-LSAMA, Université de Tunis El Manar, Tunis, Tunisia
| | - Yosra Ajili
- Laboratoire de Spectroscopie Atomique, Moléculaire et Applications-LSAMA, Université de Tunis El Manar, Tunis, Tunisia
| | - Nejm-Eddine Jaidane
- Laboratoire de Spectroscopie Atomique, Moléculaire et Applications-LSAMA, Université de Tunis El Manar, Tunis, Tunisia
| | - Yulia N Kalugina
- Department of Optics and Spectroscopy, Tomsk State University, 36 Lenin Ave., Tomsk 634050, Russia
| | - Philippe Halvick
- Institut des Sciences Moléculaires, Université de Bordeaux, CNRS UMR 5255, 33405 Talence Cedex, France
| | - Thierry Stoecklin
- Institut des Sciences Moléculaires, Université de Bordeaux, CNRS UMR 5255, 33405 Talence Cedex, France
| | - Majdi Hochlaf
- Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, 5 bd Descartes, 77454 Marne-la-Vallée, France
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22
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Boussouf K, Boulmene R, Prakash M, Komiha N, Taleb M, Mogren Al-Mogren M, Hochlaf M. Characterization of Znq+–imidazole (q = 0, 1, 2) organometallic complexes: DFT methods vs. standard and explicitly correlated post-Hartree–Fock methods. Phys Chem Chem Phys 2015; 17:14417-26. [DOI: 10.1039/c4cp06108j] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Benchmarking DFts for the characterization of the Znq+–imidazole (q= 0, 1, 2) complexes.
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Affiliation(s)
- K. Boussouf
- Université Paris-Est
- Laboratoire Modélisation et Simulation Multi Echelle
- MSME UMR 8208 CNRS
- 77454 Marne-la-Vallée
- France
| | - R. Boulmene
- Université Paris-Est
- Laboratoire Modélisation et Simulation Multi Echelle
- MSME UMR 8208 CNRS
- 77454 Marne-la-Vallée
- France
| | - M. Prakash
- Université Paris-Est
- Laboratoire Modélisation et Simulation Multi Echelle
- MSME UMR 8208 CNRS
- 77454 Marne-la-Vallée
- France
| | - N. Komiha
- LS3ME-Equipe de Chimie Théorique et Modélisation
- Université Mohamed
- Faculté des Sciences
- Rabat
- Maroc
| | - M. Taleb
- Laboratoire LIMME
- Université Sidi Med Ben Abdellah
- Fac des Sciences Dhar El Mehrez
- Fès
- Maroc
| | - M. Mogren Al-Mogren
- Chemistry Department
- Faculty of Science
- King Saud University
- Riyadh 11451
- Kingdom of Saudi Arabia
| | - M. Hochlaf
- Université Paris-Est
- Laboratoire Modélisation et Simulation Multi Echelle
- MSME UMR 8208 CNRS
- 77454 Marne-la-Vallée
- France
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23
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Tebai Y, Jaidane NE, Ben Abdallah D, Halvick P, Stoecklin T, Hochlaf M. Theoretical spectroscopic characterization of the ArBeO complex. J Chem Phys 2014; 141:174305. [PMID: 25381512 DOI: 10.1063/1.4900770] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Using the recently developed explicitly correlated coupled cluster method in connection with the aug-cc-pVTZ basis set, we generated the three-dimensional potential energy surface (3D-PES) of the ground state of the Ar-BeO complex. This PES covers the regions of the global and local minima, the saddle point, and the dissociation of the complex. The PES is also used for the calculation of the rovibrational spectrum up to the dissociation limit. The high density of levels which is observed favors the mixing of the states and hence the occurrence of anharmonic resonances. The wavefunctions of the high rovibrational levels exhibit large amplitude motions in addition to strong anharmonic resonances. Our theoretical spectrum should be helpful in identifying the van der Waals modes of this complex in laboratory.
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Affiliation(s)
- Y Tebai
- Laboratoire de Spectroscopie Atomique, Moléculaire et Applications - LSAMA, Université de Tunis El Manar, Tunis, Tunisia
| | - N-E Jaidane
- Laboratoire de Spectroscopie Atomique, Moléculaire et Applications - LSAMA, Université de Tunis El Manar, Tunis, Tunisia
| | - D Ben Abdallah
- Laboratoire de Spectroscopie Atomique, Moléculaire et Applications - LSAMA, Université de Tunis El Manar, Tunis, Tunisia
| | - Ph Halvick
- Université de Bordeaux, Institut des Sciences Moléculaires, UMR 5255 CNRS, 33405 Talence Cedex, France
| | - T Stoecklin
- Université de Bordeaux, Institut des Sciences Moléculaires, UMR 5255 CNRS, 33405 Talence Cedex, France
| | - M Hochlaf
- Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, 5 bd Descartes, 77454 Marne-la-Vallée, France
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24
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Denis-Alpizar O, Kalugina Y, Stoecklin T, Vera MH, Lique F. A new ab initio potential energy surface for the collisional excitation of HCN by para- and ortho-H2. J Chem Phys 2013; 139:224301. [DOI: 10.1063/1.4833676] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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25
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Mathivon K, Linguerri R, Hochlaf M. Systematic theoretical studies of the interaction of 1,4-diazabicyclo [2.2.2]octane (DABCO) with rare gases. J Chem Phys 2013; 139:164306. [DOI: 10.1063/1.4826449] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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26
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Denis-Alpizar O, Stoecklin T, Halvick P, Dubernet ML. The interaction of He with vibrating HCN: Potential energy surface, bound states, and rotationally inelastic cross sections. J Chem Phys 2013; 139:034304. [DOI: 10.1063/1.4813125] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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27
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Hollman DS, Wilke JJ, Schaefer HF. Explicitly correlated atomic orbital basis second order Møller–Plesset theory. J Chem Phys 2013; 138:064107. [DOI: 10.1063/1.4790582] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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28
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Ajili Y, Hammami K, Jaidane NE, Lanza M, Kalugina YN, Lique F, Hochlaf M. On the accuracy of explicitly correlated methods to generate potential energy surfaces for scattering calculations and clustering: application to the HCl–He complex. Phys Chem Chem Phys 2013; 15:10062-70. [DOI: 10.1039/c3cp44708a] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Yazidi O, Hochlaf M. Generation of full dimensional potential energy surfaces for atmospherically important charge transfer tetratomic complexes: the case of the OMgOO+ radical cation. Phys Chem Chem Phys 2013; 15:10158-66. [DOI: 10.1039/c3cp44429e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Denis-Alpizar O, Stoecklin T, Halvick P, Dubernet ML, Marinakis S. Potential energy surface and rovibrational energy levels of the H2-CS van der Waals complex. J Chem Phys 2012; 137:234301. [DOI: 10.1063/1.4771658] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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31
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Lique F, Halvick P, Stoecklin T, Hochlaf M. Prediction of the existence of the N2H- molecular anion. J Chem Phys 2012; 136:244302. [PMID: 22755569 DOI: 10.1063/1.4730036] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We predict the existence of the N(2)H(-) anion from first principle calculations. We present the three-dimensional potential energy surface and the bound states of the N(2)H(-)/D(-) van der Waals anion. The electronic calculations were performed using state-of-the-art ab initio methods and the nuclear motions were solved using a quantum close-coupling scattering theory. A T-shaped equilibrium structure was found, with a well depth of 349.1 cm(-1), where 18 bound states have been located for N(2)H(-) and 25 for N(2)D(-) for total angular momentum J = 0. We also present the absorption spectra of the N(2)H(-) complex. This anion could be formed after low energy collisions between N(2) and H(-) through radiative association. The importance of this prediction in astrophysics and the possible use of N(2)H(-) as a tracer of N(2) and H(-) in the interstellar medium is discussed.
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Affiliation(s)
- François Lique
- LOMC-UMR 6294, CNRS-Université du Havre, 25 rue Philippe Lebon, BP 540, 76058 Le Havre, France.
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32
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Hollman DS, Schaefer HF. In search of the next Holy Grail of polyoxide chemistry: Explicitly correlated ab initio full quartic force fields for HOOH, HOOOH, HOOOOH, and their isotopologues. J Chem Phys 2012; 136:084302. [DOI: 10.1063/1.3684231] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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33
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Linguerri R, Komiha N, Hochlaf M. Solvation effects and stabilization of multicharged ions: a case study of ArmBeOq+ complexes. Phys Chem Chem Phys 2012; 14:4236-43. [DOI: 10.1039/c2cp24004a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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