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Goettl SJ, Doddipatla S, Yang Z, He C, Kaiser RI, Silva MX, Galvão BRL, Millar TJ. Chemical dynamics study on the gas-phase reaction of the D1-silylidyne radical (SiD; X 2Π) with deuterium sulfide (D 2S) and hydrogen sulfide (H 2S). Phys Chem Chem Phys 2021; 23:13647-13661. [PMID: 34120159 DOI: 10.1039/d1cp01629f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reactions of the D1-silylidyne radical (SiD; X2Π) with deuterium sulfide (D2S; X1A1) and hydrogen sulfide (H2S; X1A1) were conducted utilizing a crossed molecular beams machine under single collision conditions. The experimental work was carried out in conjunction with electronic structure calculations. The elementary reaction commences with a barrierless addition of the D1-silylidyne radical to one of the non-bonding electron pairs of the sulfur atom of hydrogen (deuterium) sulfide followed by possible bond rotation isomerization and multiple atomic hydrogen (deuterium) migrations. Unimolecular decomposition of the reaction intermediates lead eventually to the D1-thiosilaformyl radical (DSiS) (p1) and D2-silanethione (D2SiS) (p3) via molecular and atomic deuterium loss channels (SiD-D2S system) along with the D1-thiosilaformyl radical (DSiS) (p1) and D1-silanethione (HDSiS) (p3) through molecular and atomic hydrogen ejection (SiD-H2S system) via indirect scattering dynamics in barrierless and overall exoergic reactions. Our study provides a look into the complex dynamics of the silicon and sulfur chemistries involving multiple deuterium/hydrogen shifts and tight exit transition states, as well as insight into silicon- and sulfur-containing molecule formation pathways in deep space. Although neither of the non-deuterated species - the thiosilaformyl radical (HSiS) and silanethione (H2SiS) - have been observed in the interstellar medium (ISM) thus far, astrochemical models presented here predict relative abundances in the Orion Kleinmann-Low nebula to be sufficiently high enough for detection.
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Affiliation(s)
- Shane J Goettl
- Department of Chemistry, University of Hawai'i at Manoa, Honolulu, Hawaii 96822, USA.
| | - Srinivas Doddipatla
- Department of Chemistry, University of Hawai'i at Manoa, Honolulu, Hawaii 96822, USA.
| | - Zhenghai Yang
- Department of Chemistry, University of Hawai'i at Manoa, Honolulu, Hawaii 96822, USA.
| | - Chao He
- Department of Chemistry, University of Hawai'i at Manoa, Honolulu, Hawaii 96822, USA.
| | - Ralf I Kaiser
- Department of Chemistry, University of Hawai'i at Manoa, Honolulu, Hawaii 96822, USA.
| | - Mateus X Silva
- Centro Federal de Educação Tecnológica de Minas Gerais, CEFET-MG, Av. Amazonas 5253, 30421-169 Belo Horizonte, Minas Gerais, Brazil.
| | - Breno R L Galvão
- Centro Federal de Educação Tecnológica de Minas Gerais, CEFET-MG, Av. Amazonas 5253, 30421-169 Belo Horizonte, Minas Gerais, Brazil.
| | - Tom J Millar
- School of Maths and Physics, Queen's University Belfast, University Road, Belfast BT7 1NN, Northern Ireland, UK.
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Lupieri P, Ippoliti E, Altoè P, Garavelli M, Mwalaba M, Carloni P. Spectroscopic Properties of Formaldehyde in Aqueous Solution: Insights from Car−Parrinello and TDDFT/CASPT2 Calculations. J Chem Theory Comput 2010; 6:3403-9. [DOI: 10.1021/ct100384f] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Paola Lupieri
- German Research School for Simulation Sciences GmbH, 52425 Jülich and RWTH Aachen, Germany, SISSA, via Bonomea 265, 34136 Trieste, Italy, Department of Chemistry “G. Ciamician”, University of Bologna, via Selmi 2, I-40126 Bologna, Italy, International Centre for Theoretical Physics (ICTP), Strada Costiera 11, 34151 Trieste, Italy, and Democritos Modeling Center for Research in Atomistic Simulation, via Bonomea 265, 34136 Trieste, Italy
| | - Emiliano Ippoliti
- German Research School for Simulation Sciences GmbH, 52425 Jülich and RWTH Aachen, Germany, SISSA, via Bonomea 265, 34136 Trieste, Italy, Department of Chemistry “G. Ciamician”, University of Bologna, via Selmi 2, I-40126 Bologna, Italy, International Centre for Theoretical Physics (ICTP), Strada Costiera 11, 34151 Trieste, Italy, and Democritos Modeling Center for Research in Atomistic Simulation, via Bonomea 265, 34136 Trieste, Italy
| | - Piero Altoè
- German Research School for Simulation Sciences GmbH, 52425 Jülich and RWTH Aachen, Germany, SISSA, via Bonomea 265, 34136 Trieste, Italy, Department of Chemistry “G. Ciamician”, University of Bologna, via Selmi 2, I-40126 Bologna, Italy, International Centre for Theoretical Physics (ICTP), Strada Costiera 11, 34151 Trieste, Italy, and Democritos Modeling Center for Research in Atomistic Simulation, via Bonomea 265, 34136 Trieste, Italy
| | - Marco Garavelli
- German Research School for Simulation Sciences GmbH, 52425 Jülich and RWTH Aachen, Germany, SISSA, via Bonomea 265, 34136 Trieste, Italy, Department of Chemistry “G. Ciamician”, University of Bologna, via Selmi 2, I-40126 Bologna, Italy, International Centre for Theoretical Physics (ICTP), Strada Costiera 11, 34151 Trieste, Italy, and Democritos Modeling Center for Research in Atomistic Simulation, via Bonomea 265, 34136 Trieste, Italy
| | - M. Mwalaba
- German Research School for Simulation Sciences GmbH, 52425 Jülich and RWTH Aachen, Germany, SISSA, via Bonomea 265, 34136 Trieste, Italy, Department of Chemistry “G. Ciamician”, University of Bologna, via Selmi 2, I-40126 Bologna, Italy, International Centre for Theoretical Physics (ICTP), Strada Costiera 11, 34151 Trieste, Italy, and Democritos Modeling Center for Research in Atomistic Simulation, via Bonomea 265, 34136 Trieste, Italy
| | - Paolo Carloni
- German Research School for Simulation Sciences GmbH, 52425 Jülich and RWTH Aachen, Germany, SISSA, via Bonomea 265, 34136 Trieste, Italy, Department of Chemistry “G. Ciamician”, University of Bologna, via Selmi 2, I-40126 Bologna, Italy, International Centre for Theoretical Physics (ICTP), Strada Costiera 11, 34151 Trieste, Italy, and Democritos Modeling Center for Research in Atomistic Simulation, via Bonomea 265, 34136 Trieste, Italy
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Zhou M, Ma R, Yuan D, Chen M. Reaction of Chloromethyl Radical with Dioxygen: Formation of the Chloromethylperoxy Radical and Its Photodissociation in Solid Argon. J Phys Chem A 2009; 113:2826-30. [DOI: 10.1021/jp809683n] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Mingfei Zhou
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Advanced Materials Laboratory, Fudan University, Shanghai 200433, P. R. China
| | - Renhu Ma
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Advanced Materials Laboratory, Fudan University, Shanghai 200433, P. R. China
| | - Dongmei Yuan
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Advanced Materials Laboratory, Fudan University, Shanghai 200433, P. R. China
| | - Mohua Chen
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Advanced Materials Laboratory, Fudan University, Shanghai 200433, P. R. China
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Zhou H, Gong Y, Zhou M. Infrared Spectra of Chlorinated Ethylene Cations: C2Cl4+, C2HCl3+, 1,1-C2H2Cl2+, and trans-C2H2Cl2+ in Solid Argon. J Phys Chem A 2007; 111:603-9. [PMID: 17249749 DOI: 10.1021/jp066618y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Infrared spectra of chlorinated ethylene cations: C2Cl4+, C2HCl3+, 1,1-C2H2Cl2+, and trans-C2H2Cl2+ isolated in solid argon are presented. These cations were produced by co-deposition of chlorinated ethylene/Ar mixtures with high-frequency-discharged Ar at 4 K. Photosensitive absorptions are assigned to different vibrational modes of the cations on the basis of observed chlorine isotopic shifts and quantum chemical frequency calculations. With the removal of one electron from the HOMO of chlorinated ethylene neutrals that is C=C bonding and C-Cl antibonding in character, the observed C-Cl stretching vibrational frequencies of the cations are blue-shifted relative to those of the chlorinated ethylene neutrals. The results also show that the cations can be regarded as "isolated" with the vibrational frequencies only slightly shifted when compared to the available gas-phase values.
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Affiliation(s)
- Han Zhou
- Department of Chemistry & Laser Chemistry Institute, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, Shanghai 200433, P. R. China
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