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Desrier A, Romanzin C, Lamarre N, Alcaraz C, Gans B, Gauyacq D, Liévin J, Boyé-Péronne S. Experimental and ab initio characterization of HC 3N + vibronic structure. I. Synchrotron-based threshold photo-electron spectroscopy. J Chem Phys 2016; 145:234310. [DOI: 10.1063/1.4972019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Affiliation(s)
- Antoine Desrier
- Institut des Sciences Moléculaires d’Orsay (ISMO), CNRS UMR 8214, Univ. Paris-Sud, Université Paris-Saclay, F-91405 Orsay, France
| | - Claire Romanzin
- Laboratoire de Chimie Physique, CNRS UMR 8000, Univ. Paris-Sud, Université Paris-Saclay, 91405 Orsay Cédex, France
- Synchrotron SOLEIL, L’Orme des Merisiers, BP 48, Saint-Aubin, FR-91192 Gif sur Yvette Cedex, France
| | - Nicolas Lamarre
- Institut des Sciences Moléculaires d’Orsay (ISMO), CNRS UMR 8214, Univ. Paris-Sud, Université Paris-Saclay, F-91405 Orsay, France
| | - Christian Alcaraz
- Laboratoire de Chimie Physique, CNRS UMR 8000, Univ. Paris-Sud, Université Paris-Saclay, 91405 Orsay Cédex, France
- Synchrotron SOLEIL, L’Orme des Merisiers, BP 48, Saint-Aubin, FR-91192 Gif sur Yvette Cedex, France
| | - Bérenger Gans
- Institut des Sciences Moléculaires d’Orsay (ISMO), CNRS UMR 8214, Univ. Paris-Sud, Université Paris-Saclay, F-91405 Orsay, France
| | - Dolores Gauyacq
- Institut des Sciences Moléculaires d’Orsay (ISMO), CNRS UMR 8214, Univ. Paris-Sud, Université Paris-Saclay, F-91405 Orsay, France
| | - Jacques Liévin
- Service de Chimie Quantique et Photophysique, Université Libre de Bruxelles, CP 160/09, B-1050 Bruxelles, Belgium
| | - Séverine Boyé-Péronne
- Institut des Sciences Moléculaires d’Orsay (ISMO), CNRS UMR 8214, Univ. Paris-Sud, Université Paris-Saclay, F-91405 Orsay, France
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2
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Leach S, Garcia GA, Mahjoub A, Bénilan Y, Fray N, Gazeau MC, Gaie-Levrel F, Champion N, Schwell M. Ionization photophysics and spectroscopy of cyanoacetylene. J Chem Phys 2014; 140:174305. [PMID: 24811639 DOI: 10.1063/1.4871298] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Photoionization of cyanoacetylene was studied using synchrotron radiation over the non-dissociative ionization excitation range 11-15.6 eV, with photoelectron-photoion coincidence techniques. The absolute ionization cross-section and spectroscopic aspects of the parent ion were recorded. The adiabatic ionization energy of cyanoacetylene was measured as 11.573 ± 0.010 eV. A detailed analysis of photoelectron spectra of HC3N involves new aspects and new assignments of the vibrational components to excitation of the A(2)Σ(+) and B(2)Π states of the cation. Some of the structured autoionization features observed in the 11.94 to 15.5 eV region of the total ion yield (TIY) spectrum were assigned to two Rydberg series converging to the B(2)Π state of HC3N(+). A number of the measured TIY features are suggested to be vibrational components of Rydberg series converging to the C(2)Σ(+) state of HC3N(+) at ≈17.6 eV and others to valence shell transitions of cyanoacetylene in the 11.6-15 eV region. The results of quantum chemical calculations of the cation electronic state geometries, vibrational frequencies and energies, as well as of the C-H dissociation potential energy profiles of the ground and electronic excited states of the ion, are compared with experimental observations. Ionization quantum yields are evaluated and discussed and the problem of adequate calibration of photoionization cross-sections is raised.
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Affiliation(s)
- Sydney Leach
- LERMA UMR CNRS 8112, Observatoire de Paris-Meudon, 5 place Jules-Jansen, 92195 Meudon, France
| | - Gustavo A Garcia
- Synchrotron SOLEIL, L'Orme des Merisiers, St. Aubin, B.P. 48, 91192, Gif-sur-Yvette Cedex, France
| | - Ahmed Mahjoub
- LISA UMR CNRS 7583, Université Paris Est Créteil and Université Paris Diderot, Institut Pierre Simon Laplace, 61 Avenue du Général de Gaulle, 94010 Créteil, France
| | - Yves Bénilan
- LISA UMR CNRS 7583, Université Paris Est Créteil and Université Paris Diderot, Institut Pierre Simon Laplace, 61 Avenue du Général de Gaulle, 94010 Créteil, France
| | - Nicolas Fray
- Synchrotron SOLEIL, L'Orme des Merisiers, St. Aubin, B.P. 48, 91192, Gif-sur-Yvette Cedex, France
| | - Marie-Claire Gazeau
- LISA UMR CNRS 7583, Université Paris Est Créteil and Université Paris Diderot, Institut Pierre Simon Laplace, 61 Avenue du Général de Gaulle, 94010 Créteil, France
| | - François Gaie-Levrel
- Synchrotron SOLEIL, L'Orme des Merisiers, St. Aubin, B.P. 48, 91192, Gif-sur-Yvette Cedex, France
| | - Norbert Champion
- LERMA UMR CNRS 8112, Observatoire de Paris-Meudon, 5 place Jules-Jansen, 92195 Meudon, France
| | - Martin Schwell
- LISA UMR CNRS 7583, Université Paris Est Créteil and Université Paris Diderot, Institut Pierre Simon Laplace, 61 Avenue du Général de Gaulle, 94010 Créteil, France
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Zaleśny R, Góra RW, Kozłowska J, Luis JM, Ågren H, Bartkowiak W. Resonant and Nonresonant Hyperpolarizabilities of Spatially Confined Molecules: A Case Study of Cyanoacetylene. J Chem Theory Comput 2013; 9:3463-72. [DOI: 10.1021/ct400410m] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Robert Zaleśny
- Theoretical Chemistry Group, Institute of Physical and Theoretical
Chemistry, Wroclaw University of Technology, Wyb. Wyspiańskiego 27, PL−50370 Wrocław, Poland
| | - Robert W. Góra
- Theoretical Chemistry Group, Institute of Physical and Theoretical
Chemistry, Wroclaw University of Technology, Wyb. Wyspiańskiego 27, PL−50370 Wrocław, Poland
| | - Justyna Kozłowska
- Theoretical Chemistry Group, Institute of Physical and Theoretical
Chemistry, Wroclaw University of Technology, Wyb. Wyspiańskiego 27, PL−50370 Wrocław, Poland
| | - Josep M. Luis
- Institut de Química Computacional
i Catàlisi and Departament de Química, Universitat de Girona, E−17071 Girona, Catalonia,
Spain
| | - Hans Ågren
- Department of Theoretical
Chemistry and Biology, School of Biotechnology, KTH Royal Institute of Technology, SE−10691 Stockholm,
Sweden
| | - Wojciech Bartkowiak
- Theoretical Chemistry Group, Institute of Physical and Theoretical
Chemistry, Wroclaw University of Technology, Wyb. Wyspiańskiego 27, PL−50370 Wrocław, Poland
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Silva R, Gichuhi WK, Kislov VV, Landera A, Mebel AM, Suits AG. UV photodissociation of cyanoacetylene: a combined ion imaging and theoretical investigation. J Phys Chem A 2009; 113:11182-6. [PMID: 19827850 DOI: 10.1021/jp904183a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The photodissociation of cyanoacetylene, one of the key minor constituents in Titan's atmosphere, was studied in a molecular beam under collisionless conditions using direct current slice ion imaging at 121.6, 193.3, and 243.2 nm. The experimental results were augmented by high-level theoretical calculations of stationary points on the ground-state and second excited singlet potential surfaces, and by statistical calculations of the dissociation rates and product branching on the ground-state surface. Results at 121.6 and 243.2 nm are nearly identical, suggesting that the 243.2 nm photodissociation is the result of a two-photon process. The translational energy distributions show only a modest fraction of the available energy in translation and are consistent with barrierless dissociation from the ground state. The results at 193.3 nm are quite distinct, showing up to half of the available energy in translation, implying dissociation with an exit barrier. The 193 nm result is ascribed to dissociation on the S(1) potential energy surface. The theoretical calculations show significant rates for H loss on the ground state at 193 nm and significant branching to CN + CCH at 157 nm and higher.
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Affiliation(s)
- R Silva
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, USA
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Khriachtchev L, Lignell A, Tanskanen H, Lundell J, Kiljunen H, Räsänen M. Insertion of noble gas atoms into cyanoacetylene: an ab initio and matrix isolation study. J Phys Chem A 2007; 110:11876-85. [PMID: 17048820 DOI: 10.1021/jp063731f] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A computational and experimental matrix isolation study of insertion of noble gas atoms into cyanoacetylene (HCCCN) is presented. Twelve novel noble gas insertion compounds are found to be kinetically stable at the MP2 level of theory, including four molecules with argon. The first group of the computationally studied molecules belongs to noble gas hydrides (HNgCCCN and HNgCCNC), and we found their stability for Ng = Ar, Kr, and Xe. The HNgCCCN compounds with Kr and Xe have similar stability to that of previously reported HKrCN and HXeCN. The HArCCCN molecule seems to have a weaker H-Ar bond than in the previously identified HArF molecule. The HNgCCNC molecules are less stable than the HNgCCCN isomers for all noble gas atoms. The second group of the computational insertion compounds, HCCNgCN and HCCNgNC, are of a different type, and they also are kinetically stable for Ng = Ar, Kr, and Xe. Our photolysis and annealing experiments with low-temperature cyanoacetylene/Ng (Ng = Ar, Kr, and Xe) matrixes evidence the formation of two noble gas hydrides for Ng = Kr and Xe, with the strongest IR absorption bands at 1492.1 and 1624.5 cm(-1), and two additional absorption modes for each species are found. The computational spectra of HKrCCCN and HXeCCCN fit most closely the experimental data, which is the basis for our assignment. The obtained species absorb at quite similar frequencies as the known HKrCN and HXeCN molecules, which is in agreement with the theoretical predictions. No strong candidates for an Ar compound are observed in the IR absorption spectra. As an important side product of this work, the data obtained in long-term decay of KrHKr+ cations suggest a tentative assignment for the CCCN radical.
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Affiliation(s)
- Leonid Khriachtchev
- Department of Chemistry, and VERIFIN, PO Box 55, FIN-00014 University of Helsinki, Finland.
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Yang LM, Ding YH, Wang Q, Sun CC. Monosilicon-substituted cyanoacetylene: a computational study. J Comput Chem 2006; 27:578-95. [PMID: 16470670 DOI: 10.1002/jcc.20365] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A detailed theoretical investigation of the [H,Si,C(2),N] potential energy surfaces including 28 minimum isomers and 65 interconversion transition states is reported at the Gaussian-3//B3LYP/6-31G(d) level. Generally, the triplet species lie energetically higher than the singlet ones. The former three low-lying isomers are linear HCCNSi 1 (0.00 kcal/mol), branched SiC(H)CN 12 (7.09 kcal/mol), and bent HNCCSi 7 (14.22 kcal/mol), which are separated by rather high barriers from each other and are kinetically very stable with the least conversion barriers of 32.6-70.5 kcal/mol. Two energetically high-lying isomers HCNCSi 3 (42.99 kcal/mol) and SiC(H)NC 13 (36.05 kcal/mol) are also kinetically stable with a barrier of 49.19 and 21.42 kcal/mol, respectively. Additionally, five high-lying isomers, that is, three chainlike isomers, HCCSiN 2 (55.17), HCSiNC 6 (47.80), HSiNCC 11 (78.83), and one three-membered ring isomer HN-cSiCC 19 (51.21), and one four-membered ring isomer cSiCN(H)C 27 (50.6 kcal/mol), are predicted to each have lower conversion barriers of 12-18 kcal/mol and can be considered as meta-stable species. All of the predicted 10 isomers could exist as stable or meta-stable intermediates under suitable conditions. Finally, the structural and bonding analysis indicate that the [H,Si,C(2),N] molecule contains various properties that are of chemical interest (e.g., silylene, SiC triple bonding, and conjugate SiN triple bonding and CC triple bonding, charge-transfer specie, planar aromatic specie, cumulate double bonding). This is the first detailed theoretical study on the potential energy surfaces of the series of hydrogenated Si,C,C,N-containing molecules. The knowledge of the present monohydrogenated SiC(2)N isomerism could provide useful information for more highly hydrogenated or larger Si,C(2),N-containing species.
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Affiliation(s)
- Li-Ming Yang
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People's Republic of China
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7
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Parker JK, Payne WA, Cody RJ, Stief LJ. Kinetics of the Reaction of Atomic Hydrogen with Cyanoacetylene from T = 200 to 298 K. J Phys Chem A 2004. [DOI: 10.1021/jp037142a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- James K. Parker
- Laboratory for Extraterrestrial Physics, NASA/Goddard Space Flight Center, Greenbelt, Maryland 20771
| | - Walter A. Payne
- Laboratory for Extraterrestrial Physics, NASA/Goddard Space Flight Center, Greenbelt, Maryland 20771
| | - Regina J. Cody
- Laboratory for Extraterrestrial Physics, NASA/Goddard Space Flight Center, Greenbelt, Maryland 20771
| | - Louis J. Stief
- Laboratory for Extraterrestrial Physics, NASA/Goddard Space Flight Center, Greenbelt, Maryland 20771
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