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Volosatova AD, Tyurin DA, Feldman VI. The Radiation Chemistry of NH 3···CO Complex in Cryogenic Media as Studied by Matrix Isolation. J Phys Chem A 2022; 126:3893-3902. [PMID: 35696324 DOI: 10.1021/acs.jpca.2c01774] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The NH3···CO complex can be considered an important building block for cold synthetic astrochemistry leading to the formation of complex organic molecules, including key prebiotic species. In this work, we have studied the radiation-induced transformations of this complex in Ar, Kr, and Xe matrices using FTIR spectroscopy. On the basis of comparison with the quantum chemical calculations at the CCSD(T)/L2a_3 level of theory, it was found that the initial complex had the configuration with hydrogen bonding through the carbon atom of CO. Irradiation of the matrix isolated complex with X-rays at 6 K leads to the formation of a number of synthetic products, namely, HNCO (in all matrices), formamide NH2CHO, NH2CO, and HNCO-H2 (in argon and krypton). The matrix effect on the product distribution was explained by the involvement of different excited states of the complex in their formation. It was suggested that formamide results from the singlet excited states while other species mainly originate from triplet excited states. The latter states are efficiently populated through ion-electron recombination (in all matrices) and through intersystem crossing (particularly, in xenon). High yield of the recombination triplet states is a feature of the processes induced by high-energy radiation (in contrast to direct photolysis). NCO, CN, and NO were found as minor secondary products at high adsorbed doses. The astrochemical implications of the obtained results are discussed.
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Affiliation(s)
| | - Daniil A Tyurin
- Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia
| | - Vladimir I Feldman
- Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia
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2
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Ushakov VG, Meshkov VV, Ermilov AY, Stolyarov AV, Gordon IE, Medvedev ES. Long-range potentials and dipole moments of the CO electronic states converging to the ground dissociation limit. Phys Chem Chem Phys 2020; 22:12058-12067. [PMID: 32441297 DOI: 10.1039/d0cp01696a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The asymptotic, R → ∞, behavior of the potential-energy and dipole-moment functions (PEFs and DMFs) for all six (1,2)Σ+, (1,2)Π, Σ-, and Δ electronic states converging to the ground C(3P) + O(3P) dissociation limit of the CO molecule are studied in the framework of long-range (LR) perturbation theory. The analytical expressions for the leading coefficients of the LR expansion, C5/R5 for PEF and d4/R4 for DMF, in terms of the atomic quadrupole constants and static dipole polarizabilities are derived. The exact relationships between the LR coefficients for the states of different spatial symmetry are established as well. The analytical results are complemented with the first-principles calculation of the PEFs and DMFs for all the above states at large distances (R = 5-20 Å). The electronic structure calculation is conducted by means of the multi-reference configuration interaction and the averaged-coupled-pair functional methods, which both implemented the aug-cc-pwCVXZ (X = T, Q, and 5) basis sets and finite-field approach. The dispersion coefficients, C5 and C6, extracted from the ab initio PEFs, are found to be very close to their present and previous theoretical counterparts. The analytically estimated d4 = -5 DÅ4 obtained for the ground X1Σ+ state perfectly agrees with the present ab initio DMF but diverges significantly from the literature data.
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Affiliation(s)
- Vladimir G Ushakov
- The Institute of Problems of Chemical Physics, Russian Academy of Sciences, Prospect Akademika Semenova 1, 142432 Chernogolovka, Russian Federation.
| | - Vladimir V Meshkov
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie gory 1/3, 119991 Moscow, Russian Federation
| | - Aleksander Yu Ermilov
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie gory 1/3, 119991 Moscow, Russian Federation
| | - Andrey V Stolyarov
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie gory 1/3, 119991 Moscow, Russian Federation
| | - Iouli E Gordon
- Harvard-Smithsonian Center for Astrophysics, Atomic and Molecular Physics Division, 60 Garden St, Cambridge, MA 02138, USA
| | - Emile S Medvedev
- The Institute of Problems of Chemical Physics, Russian Academy of Sciences, Prospect Akademika Semenova 1, 142432 Chernogolovka, Russian Federation.
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3
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Darla N, Sitha S. Reaction between NH3 (X̌1A1) and CO (X1Σ+): A Computational Insight into the Reaction Mechanism of Formamide (H2N–CHO) Formation. J Phys Chem A 2019; 123:8921-8931. [DOI: 10.1021/acs.jpca.9b07255] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nagasuneetha Darla
- Department of Chemical Sciences, APK Campus, University of Johannesburg, P.O. Box 524, Auckland Park, Johannesburg 2006, South Africa
| | - Sanyasi Sitha
- Department of Chemical Sciences, APK Campus, University of Johannesburg, P.O. Box 524, Auckland Park, Johannesburg 2006, South Africa
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Badri A, Shirkov L, Jaidane NE, Hochlaf M. Explicitly correlated potential energy surface of the CO 2-CO van der Waals dimer and applications. Phys Chem Chem Phys 2019; 21:15871-15878. [PMID: 31282914 DOI: 10.1039/c9cp02657f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The four-dimensional-potential energy surface (4D-PES) of the CO2-CO 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 developed over the set of inter-molecular coordinates and where the CO2 and CO monomers are treated as rigid rotors. Afterwards, analytic fits of this 4D-PES are carried out. In addition to the already known C-bound and O-bound stable structures of CO2-CO, we characterise a new isomer: it has a T-shaped structure where the O atom of the CO2 moiety points into the centre of mass of CO. We also find the saddle points connecting these minimal structures. This new isomer may play a role during the intramolecular isomerization processes at low energies. Then, the 4D-PES expansion is incorporated into bound vibrational state computations of C-bound and O-bound complexes. We also computed the temperature dependence of the second virial coefficient for CO2-CO. A good agreement with experiments is found.
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Affiliation(s)
- Ayda Badri
- Laboratoire de Spectroscopie Atomique, Moléculaire et Applications LSAMA LR01ES09, Université de Tunis El Manar, Tunis, Tunisia and Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, 5 bd Descartes, 77454 Marne-la-Vallée, France.
| | - Leonid Shirkov
- Faculty of Chemistry, Adam Mickiewicz University, Umultowska 89b, 61-614 Poznań, Poland
| | - Nejm-Eddine Jaidane
- Laboratoire de Spectroscopie Atomique, Moléculaire et Applications LSAMA LR01ES09, Université de Tunis El Manar, Tunis, Tunisia
| | - 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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5
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Liu Y, Li J. An accurate full-dimensional permutationally invariant potential energy surface for the interaction between H2O and CO. Phys Chem Chem Phys 2019; 21:24101-24111. [DOI: 10.1039/c9cp04405a] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first full-dimensional accurate potential energy surface was developed for the CO + H2O system based onca.102 000 points calculated at the CCSD(T)-F12a/AVTZ level using a permutation invariant polynomial-neural network (PIP-NN) method.
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Affiliation(s)
- Yang Liu
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 401331
- China
| | - Jun Li
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 401331
- China
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Taj S, Baird D, Rosu-Finsen A, McCoustra MRS. Surface heterogeneity and inhomogeneous broadening of vibrational line profiles. Phys Chem Chem Phys 2017; 19:7990-7995. [PMID: 28263326 DOI: 10.1039/c6cp07530d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The surface heterogeneity of amorphous silica (aSiO2) has been probed using coverage dependent temperature programmed desorption (TPD) of a simple probe molecule, carbon monoxide (CO), and is used to explain the inhomogeneous broadening of the CO stretching vibration in the infrared.
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Affiliation(s)
- Skandar Taj
- Institute of Chemical Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | - Diane Baird
- Institute of Chemical Sciences
- Heriot-Watt University
- Edinburgh
- UK
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7
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Ryazantsev SV, Duarte L, Feldman VI, Khriachtchev L. VUV photochemistry of the H2O⋯CO complex in noble-gas matrices: formation of the OH⋯CO complex and the HOCO radical. Phys Chem Chem Phys 2017; 19:356-365. [DOI: 10.1039/c6cp06954a] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
VUV photolysis of the H2O⋯CO complexes leads to the formation of the OH⋯CO radical–molecule complexes and trans-HOCO radicals.
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Affiliation(s)
- Sergey V. Ryazantsev
- Department of Chemistry
- Lomonosov Moscow State University
- Moscow 119991
- Russia
- Department of Chemistry
| | - Luís Duarte
- Department of Chemistry
- University of Helsinki
- FI-00014 Helsinki
- Finland
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9
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Rosu-Finsen A, Lasne J, Cassidy A, McCoustra MRS, Field D. Spontaneous polarization of solid CO on water ices and some astrophysical implications. Phys Chem Chem Phys 2016; 18:5159-71. [DOI: 10.1039/c5cp07049j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Reflection absorption infrared spectroscopy (RAIRS) is used to show that when 20 monolayer (ML) films of solid CO are laid down on solid water substrates at 20 to 24 K, the films polarize spontaneously.
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Affiliation(s)
| | - Jérôme Lasne
- Institute of Chemical Sciences
- Heriot-Watt University
- Riccarton
- UK
- Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA)
| | - Andrew Cassidy
- ISA
- Department of Physics and Astronomy
- Aarhus University
- DK-8000 Aarhus C
- Denmark
| | | | - David Field
- ISA
- Department of Physics and Astronomy
- Aarhus University
- DK-8000 Aarhus C
- Denmark
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10
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Marchione D, Thrower JD, McCoustra MRS. Efficient electron-promoted desorption of benzene from water ice surfaces. Phys Chem Chem Phys 2016; 18:4026-34. [DOI: 10.1039/c5cp06537b] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We study the desorption of benzene from solid water surfaces during irradiation of ultrathin solid films with low energy electrons.
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Lasne J, Rosu-Finsen A, Cassidy A, McCoustra MRS, Field D. Spontaneous electric fields in solid carbon monoxide. Phys Chem Chem Phys 2015; 17:30177-87. [DOI: 10.1039/c5cp04536c] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Reflection–absorption infrared spectroscopy (RAIRS) is shown to provide a means of observing the spontelectric phase of matter, the defining characteristic of which is the occurrence of a spontaneous and powerful static electric field within a film of material.
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Affiliation(s)
- Jérôme Lasne
- Institute of Chemical Sciences
- Heriot-Watt University
- Riccarton
- UK
- Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA)
| | | | - Andrew Cassidy
- Department of Physics and Astronomy
- Aarhus University
- DK-8000 Aarhus C
- Denmark
| | | | - David Field
- Department of Physics and Astronomy
- Aarhus University
- DK-8000 Aarhus C
- Denmark
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