1
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Sun YL, Huang WJ, Lee SH. Study on Formation of Interstellar C 7H from Reactions C 4 + C 3H 2 and C 4H + C 3H. J Phys Chem A 2024; 128:456-465. [PMID: 38181389 DOI: 10.1021/acs.jpca.3c07091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2024]
Abstract
We interrogated C7H produced from reactions C4 + C3H2/C4H + C3H → C7H + H using both translational and photoionization spectroscopy. Reactants C3H, C3H2, C4, and C4H were synthesized in two crossed beams of 1% C2H2/He ignited by pulsed high-voltage discharge. The individual contributions of reactions C4 + C3H2 and C4H + C3H to product C7H were evaluated as 17:83 from reactant concentrations in both molecular beams. The translational energy distribution, the angular distribution, and the photoionization efficiency curve of product C7H were unraveled. C7H was identified as the most stable linear isomer by its photoionization efficiency curve that features two ionization thresholds corresponding to separate transitions to singlet and triplet states of l-C7H+. The quantum-chemical calculations indicate that the associations of C4 with C3H2 and C4H with C3H incur no entrance barriers, and the most favorable exit channel leads to product l-C7H + H. It is the first time demonstrating that C7H is producible from reactions 1,3C4 + 1C3H2 and 2C4H + 2C3H on the lowest-lying singlet and triplet potential energy surfaces of 1,3C7H2. This work implies that the reactions of C4 + C3H2 and C4H + C3H might have contributions to interstellar C7H to some extent as compared with the C + C6H2 reaction commonly adopted in an astrochemical model.
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Affiliation(s)
- Yi-Lun Sun
- National Synchrotron Radiation Research Center (NSRRC), 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu 300092, Taiwan
| | - Wen-Jian Huang
- National Synchrotron Radiation Research Center (NSRRC), 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu 300092, Taiwan
| | - Shih-Huang Lee
- National Synchrotron Radiation Research Center (NSRRC), 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu 300092, Taiwan
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2
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Hwang E, Choi J, Hong S. Emerging laser-assisted vacuum processes for ultra-precision, high-yield manufacturing. NANOSCALE 2022; 14:16065-16076. [PMID: 36278425 DOI: 10.1039/d2nr03649e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Laser technology is a cutting-edge process with a unique photothermal response, precise site selectivity, and remote controllability. Laser technology has recently emerged as a novel tool in the semiconductor, display, and thin film industries by providing additional capabilities to existing high-vacuum equipment. The in situ and in operando laser assistance enables using multiple process environments with a level of complexity unachievable with conventional vacuum equipment. This broadens the usable range of process parameters and directly improves material properties, product precision, and device performance. This review paper examines the recent research trends in laser-assisted vacuum processes (LAVPs) as a vital tool for innovation in next-generation manufacturing processing equipment and addresses the unique characteristics and mechanisms of lasers exclusively used in each study. All the findings suggest that the LAVP can lead to methodological breakthroughs in dry etching, 2D material synthesis, and chemical vapor deposition for optoelectronic devices.
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Affiliation(s)
- Eunseung Hwang
- Department of Mechanical Design Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea.
- Department of Mechanical Engineering, BK21 FOUR ERICA-ACE Center, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan 15588, Republic of Korea
| | - Joonmyung Choi
- Department of Mechanical Design Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea.
- Department of Mechanical Engineering, BK21 FOUR ERICA-ACE Center, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan 15588, Republic of Korea
| | - Sukjoon Hong
- Department of Mechanical Design Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea.
- Department of Mechanical Engineering, BK21 FOUR ERICA-ACE Center, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan 15588, Republic of Korea
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3
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The role of predissociation states in the UV photooxidation of acetylene. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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4
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Jiang J, Du Z, Liévin J, Field RW. One-colour (∼220 nm) resonance-enhanced (S 1 − S 0) multi-photon dissociation of acetylene: probe of the C 2 A1 Π u − X1 Σ +g band by frequency-modulation spectroscopy. Mol Phys 2020. [DOI: 10.1080/00268976.2020.1724340] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Jun Jiang
- Center for Accelerator Mass Spectrometry, Lawrence Livermore National Laboratory, Livermore, CA, USA
| | - Zhenhui Du
- State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin, People's Republic of China
| | - Jacques Liévin
- Service de Chimie Quantique et Photophysique, Université Libre de Bruxelles, Bruxelles, Belgium
| | - Robert W. Field
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, USA
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Jiang J, Du Z, Field RW. Determination of the sign of the population difference in a two-level system by frequency-modulation spectroscopy. Mol Phys 2020. [DOI: 10.1080/00268976.2019.1660007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Jun Jiang
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Zhenhui Du
- State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin, People's Republic of China
| | - Robert W. Field
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, USA
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Ashfold MNR, Ingle RA, Karsili TNV, Zhang J. Photoinduced C–H bond fission in prototypical organic molecules and radicals. Phys Chem Chem Phys 2019; 21:13880-13901. [DOI: 10.1039/c8cp07454b] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
We survey and assess current knowledge regarding the primary photochemistry of hydrocarbon molecules and radicals.
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Affiliation(s)
| | | | | | - Jingsong Zhang
- Department of Chemistry
- University of California at Riverside
- Riverside
- USA
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Sun YL, Huang WJ, Lee SH. Formation of C 9H 2 and C 10H 2 from Reactions C 3H + C 6H 2 and C 4H + C 6H 2. J Phys Chem A 2017; 121:9687-9697. [PMID: 29232517 DOI: 10.1021/acs.jpca.7b08902] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The reactions of C3H and C4H radicals with C6H2 were investigated for the first time. Reactants C3H, C4H, and C6H2 were synthesized in two beams of C2H2 diluted with helium by pulsed high-voltage discharge. We measured translational-energy distributions, angular distributions, and photoionization-efficiency spectra of C9H2 and C10H2 produced from the title reactions in a crossed molecular-beam apparatus using synchrotron vacuum-ultraviolet photoionization. The C3H (C4H) + C6H2 reaction releases 42% (33%) of available energy into the translational degrees of freedom of product C9H2 (C10H2) + H and scatters products into a nearly isotropic angular distribution. The photoionization-efficiency spectrum of C9H2 (C10H2) is in good agreement with that of C9H2 (C10H2) produced from the C7H (C8H) + C2H2 reaction. The ionization threshold, after deconvolution, was determined as 8.0 ± 0.1 eV for C9H2 and 8.8 ± 0.1 eV for C10H2. The combination of measurements of product translational-energy release and photoionization-efficiency spectra indicates productions of 3HC9H/c-1HC3(C)C5H/c-1HC7(C)CH + H and 1HC10H + H in the two title reactions, which are supported also by quantum-chemical calculations. Ratios branching to the three isomers of C9H2 remain unknown. This work demonstrates that long carbon-chain molecules (e.g., C9H2 and C10H2) can be synthesized from reactions of CmH (e.g., m = 3 and 4) radicals with polyynes (e.g., HC6H) and gives some valuable implications to planetary, interstellar, and combustion chemistry.
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Affiliation(s)
- Yi-Lun Sun
- National Synchrotron Radiation Research Center (NSRRC) , 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu 30076, Taiwan
| | - Wen-Jian Huang
- National Synchrotron Radiation Research Center (NSRRC) , 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu 30076, Taiwan
| | - Shih-Huang Lee
- National Synchrotron Radiation Research Center (NSRRC) , 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu 30076, Taiwan
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Fárník M, Poterya V, Kočišek J, Fedor J, Slavíček P. Short review on the acetylene photochemistry in clusters: photofragment caging and reactivity. Mol Phys 2012. [DOI: 10.1080/00268976.2012.706389] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Michal Fárník
- a J. Heyrovský Institute of Physical Chemistry v.v.i , Academy of Sciences of the Czech Republic , Dolejškova 3, 18223 Prague , Czech Republic
| | - Viktoriya Poterya
- a J. Heyrovský Institute of Physical Chemistry v.v.i , Academy of Sciences of the Czech Republic , Dolejškova 3, 18223 Prague , Czech Republic
| | - Jaroslav Kočišek
- a J. Heyrovský Institute of Physical Chemistry v.v.i , Academy of Sciences of the Czech Republic , Dolejškova 3, 18223 Prague , Czech Republic
- b Faculty of Mathematics and Physics , Charles University Prague , Czech Republic
| | - Juraj Fedor
- a J. Heyrovský Institute of Physical Chemistry v.v.i , Academy of Sciences of the Czech Republic , Dolejškova 3, 18223 Prague , Czech Republic
| | - Petr Slavíček
- c Department of Physical Chemistry , Institute of Chemical Technology Prague , Technická 5, 16628 Prague 6 , Czech Republic
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Jamal A, Mebel AM. An ab initio/RRKM study of the reaction mechanism and product branching ratios of the reactions of ethynyl radical with 1,2-butadiene. Chem Phys Lett 2011. [DOI: 10.1016/j.cplett.2011.10.064] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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11
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Jamal A, Mebel AM. Reactions of C2H with 1- and 2-Butynes: An Ab Initio/RRKM Study of the Reaction Mechanism and Product Branching Ratios. J Phys Chem A 2011; 115:2196-207. [DOI: 10.1021/jp111521j] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Adeel Jamal
- Department of Chemistry and Biochemistry, Florida International University, Florida, 33199, United States
| | - Alexander M. Mebel
- Department of Chemistry and Biochemistry, Florida International University, Florida, 33199, United States
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12
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Landera A, Kaiser RI, Mebel AM. Addition of one and two units of C2H to styrene: A theoretical study of the C10H9 and C12H9 systems and implications toward growth of polycyclic aromatic hydrocarbons at low temperatures. J Chem Phys 2011; 134:024302. [DOI: 10.1063/1.3526957] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Affiliation(s)
- Alexander Landera
- Department of Chemistry and Biochemistry, Florida International University, 11200 SW 8th Street, Miami, Florida 33139, USA
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Mandal D, Mondal B, Das AK. The association reaction between C2H and 1-butyne: a computational chemical kinetics study. Phys Chem Chem Phys 2011; 13:4583-95. [DOI: 10.1039/c0cp02368j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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14
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Zhang Y, Yuan K, Yu S, Parker DH, Yang X. Photodissociation dynamics of acetylene via the C̃ Π1u electronic state. J Chem Phys 2010; 133:014307. [DOI: 10.1063/1.3456738] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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15
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Jones B, Zhang F, Maksyutenko P, Mebel AM, Kaiser RI. Crossed molecular beam study on the formation of phenylacetylene and its relevance to Titan's atmosphere. J Phys Chem A 2010; 114:5256-62. [PMID: 20369875 DOI: 10.1021/jp912054p] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The crossed molecular beam experiment of the deuterated ethynyl radical (C(2)D; X(2)Sigma(+)) with benzene [C(6)H(6)(X(1)A(1g))] and its fully deuterated analog [C(6)D(6)(X(1)A(1g))] was conducted at a collision energy of 58.1 kJ mol(-1). Our experimental data suggest the formation of the phenylacetylene-d(6) via indirect reactive scattering dynamics through a long-lived reaction intermediate; the reaction is initiated by a barrierless addition of the ethynyl-d(1) radical to benzene-d(6). This initial collision complex was found to decompose via a tight exit transition state located about 42 kJ mol(-1) above the separated products; here, the deuterium atom is ejected almost perpendicularly to the rotational plane of the decomposing intermediate and almost parallel to the total angular momentum vector. The overall experimental exoergicity of the reaction is shown to be 121 +/- 10 kJ mol(-1); this compares nicely with the computed reaction energy of -111 kJ mol(-1). Even though the experiment was conducted at a collisional energy higher than equivalent temperatures typically found in the atmosphere of Titan (94 K and higher), the reaction may proceed in Titan's atmosphere as it involves no entrance barrier, all transition states involved are below the energy of the separated reactants, and the reaction is exoergic. Further, the phenylacetylene was found to be the sole reaction product.
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Affiliation(s)
- Brant Jones
- Department of Chemistry, University of Hawai'i at Manoa, Honolulu, Hawaii 96822, USA
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16
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Goulay F, Nemes L, Schrader PE, Michelsen HA. Spontaneous emission from C2(d3Πg) and C3(A1Πu) during laser irradiation of soot particles. Mol Phys 2010. [DOI: 10.1080/00268971003627824] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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17
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Landera A, Mebel AM. Mechanisms of formation of nitrogen-containing polycyclic aromatic compounds in low-temperature environments of planetary atmospheres: A theoretical study. Faraday Discuss 2010; 147:479-94; discussion 527-52. [DOI: 10.1039/c003475d] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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18
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Kaiser RI, Maksyutenko P, Ennis C, Zhang F, Gu X, Krishtal SP, Mebel AM, Kostko O, Ahmed M. Untangling the chemical evolution of Titan's atmosphere and surface–from homogeneous to heterogeneous chemistry. Faraday Discuss 2010; 147:429-78; discussion 527-52. [DOI: 10.1039/c003599h] [Citation(s) in RCA: 109] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Jamal A, Mebel AM. An ab initio/RRKM study of the reaction mechanism and product branching ratios of the reactions of ethynyl radical with allene and methylacetylene. Phys Chem Chem Phys 2010; 12:2606-18. [DOI: 10.1039/b920977h] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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20
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Huang CH, Kaiser RI, Chang AHH. Theoretical Study on the Reaction of Ground State Cyano Radical with Propylene in Titan’s Atmosphere. J Phys Chem A 2009; 113:12675-85. [DOI: 10.1021/jp905081u] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- C. H. Huang
- Department of Chemistry, National Dong Hwa University, Shoufeng, Hualien 974, Taiwan, and Department of Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii 96822
| | - R. I. Kaiser
- Department of Chemistry, National Dong Hwa University, Shoufeng, Hualien 974, Taiwan, and Department of Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii 96822
| | - A. H. H. Chang
- Department of Chemistry, National Dong Hwa University, Shoufeng, Hualien 974, Taiwan, and Department of Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii 96822
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Zhang F, Kim YS, Kaiser RI, Krishtal SP, Mebel AM. Crossed Molecular Beams Study on the Formation of Vinylacetylene in Titan’s Atmosphere. J Phys Chem A 2009; 113:11167-73. [DOI: 10.1021/jp9032595] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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Fárník M, Poterya V, Votava O, Ončák M, Slavíček P, Dauster I, Buck U. Solvent-Induced Photostability of Acetylene Molecules in Clusters Probed by Multiphoton Dissociation. J Phys Chem A 2009; 113:7322-30. [DOI: 10.1021/jp811073j] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | | | | | - Ingo Dauster
- Institut für Physikalische Chemie, Universität Göttingen, Tammannstrasse 6, D-37077 Göttingen, Germany
| | - Udo Buck
- Max-Planck Institut für Dynamik and Selbstorganisation, Bunsenstrasse 10, D-37073 Göttingen, Germany
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Mebel AM, Kislov VV, Kaiser RI. Photoinduced Mechanism of Formation and Growth of Polycyclic Aromatic Hydrocarbons in Low-Temperature Environments via Successive Ethynyl Radical Additions. J Am Chem Soc 2008; 130:13618-29. [DOI: 10.1021/ja804198a] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alexander M. Mebel
- Department of Chemistry and Biochemistry, Florida International University, 11200 SW 8th Street, Miami, Florida 33199, and Department of Chemistry, University of Hawai’i at Manoa, Honolulu, Hawaii 96822-2275
| | - Vadim V. Kislov
- Department of Chemistry and Biochemistry, Florida International University, 11200 SW 8th Street, Miami, Florida 33199, and Department of Chemistry, University of Hawai’i at Manoa, Honolulu, Hawaii 96822-2275
| | - Ralf I. Kaiser
- Department of Chemistry and Biochemistry, Florida International University, 11200 SW 8th Street, Miami, Florida 33199, and Department of Chemistry, University of Hawai’i at Manoa, Honolulu, Hawaii 96822-2275
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Gu X, Zhang F, Kaiser RI. Reaction dynamics on the formation of 1- and 3-cyanopropylene in the crossed beams reaction of ground-state cyano radicals (CN) with propylene (C3H6) and its deuterated isotopologues. J Phys Chem A 2008; 112:9607-13. [PMID: 18681396 DOI: 10.1021/jp8039059] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Crossed molecular beams experiments were utilized to explore the chemical reaction dynamics of ground-state cyano radicals, CN(X(2)Sigma(+)), with propylene (CH3CHCH2) together with two d3-isotopologues (CD3CHCH2, CH3CDCD2) as potential pathways to form organic nitriles under single collision conditions in the atmosphere of Saturn's moon Titan and in the interstellar medium. On the basis of the center-of-mass translational and angular distributions, the reaction dynamics were deduced to be indirect and commenced via an addition of the electrophilic cyano radical with its radical center to the alpha-carbon atom of the propylene molecule yielding a doublet radical intermediate: CH3CHCH2CN. Crossed beam experiments with propylene-1,1,2-d3 (CH3CDCD2) and propylene-3,3,3-d3 (CD3CHCH2) indicated that the reaction intermediates CH3CDCD2CN (from propylene-1,1,2-d3) and CD3CHCH2CN (from propylene-3,3,3-d3) eject both atomic hydrogen through tight exit transition states located about 40-50 kJ mol(-1) above the separated products: 3-butenenitrile [H2CCDCD2CN] (25%), and cis/trans-2-butenenitrile [CD3CHCHCN] (75%), respectively, plus atomic hydrogen. Applications of our results to the chemical processing of cold molecular clouds like TMC-1 and OMC-1 are also presented.
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Affiliation(s)
- Xibin Gu
- Department of Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii 96822, USA
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25
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Wu YJ, Cheng BM. Infrared absorption spectra of ethynyl radicals isolated in solid Ne: Identification of the fundamental C–H stretching mode. Chem Phys Lett 2008. [DOI: 10.1016/j.cplett.2008.07.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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26
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Landera A, Krishtal SP, Kislov VV, Mebel AM, Kaiser RI. Theoretical study of the C6H3 potential energy surface and rate constants and product branching ratios of the C2H(Σ+2)+C4H2(Σg+1) and C4H(Σ+2)+C2H2(Σg+1) reactions. J Chem Phys 2008; 128:214301. [DOI: 10.1063/1.2929821] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [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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Landera A, Mebel AM, Kaiser RI. Theoretical study of the reaction mechanism of ethynyl radical with benzene and related reactions on the C8H7 potential energy surface. Chem Phys Lett 2008. [DOI: 10.1016/j.cplett.2008.05.043] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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28
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Poterya V, Votava O, Fárník M, Ončák M, Slavíček P, Buck U, Friedrich B. Generation and orientation of organoxenon molecule H–Xe–CCH in the gas phase. J Chem Phys 2008; 128:104313. [DOI: 10.1063/1.2837656] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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30
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Affiliation(s)
- Steven L. Richardson
- a Center for the Study of Terrestrial and Extraterrestrial Atmospheres and Department of Electrical Engineering , School of Engineering, Howard University , 2300 Sixth Street. N. W., Washington, DC , 20059 , USA
| | - Joseph S. Francisco
- b Jet Propulsion Laboratory , California Institute of Technology , Pasadena , CA , 91109 , USA
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Apaydin G, Fink WH, Jackson WM. Photodissociation of CCH: Classical trajectory calculations involving seven electronic states. J Chem Phys 2004; 121:9368-77. [PMID: 15538856 DOI: 10.1063/1.1793912] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
The photodissociation dynamics of ethynyl radical, C(2)H, involving seven electronic states is studied by classical trajectory calculations. Initial values of the trajectories are selected based on relative absorption intensities calculated by Mebel et al. The energies and the derivatives are interpolated by three-dimensional cubic spline interpolator using an extended data pool. Mean square errors and standard deviations in interpolation of energies for 450 data points are found to be in the range 3.1 x 10(-6)-1.4 x 10(-5) and 1.7 x 10(-3)-3.8 x 10(-3) hartrees, respectively. The photofragments of C(2) and H are produced mainly in the X (1)Sigma(g) (+), a (3)Pi(u), b (3)Sigma(g) (-), c (3)Sigma(u) (+), A (1)Pi(u), B (1)Delta(g) electronic states of C(2) as product. The avoided crossings do not appear to be in the main dissociation pathways. The internal distributions are in good accord with the experimental results where comparison is possible, suggesting that the fragmentation mechanism of C(2)H(2) into C(2) and H is a two step process involving C(2)H radical as an intermediate with a life time long enough to allow complete collection of the phase space in the experiments.
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Affiliation(s)
- Gökşin Apaydin
- Department of Chemistry, University of California, Davis, California 95616, USA
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Chikan V, Nizamov B, Leone SR. Product State Distributions of Vibrationally Excited CO(v) for the CH(X2Π) and CH(A2Δ) Channels of the C2H + O(3P) Reaction. J Phys Chem A 2004. [DOI: 10.1021/jp040317b] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Viktor Chikan
- Departments of Chemistry and Physics, and Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720-1460
| | - Boris Nizamov
- Departments of Chemistry and Physics, and Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720-1460
| | - Stephen R. Leone
- Departments of Chemistry and Physics, and Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720-1460
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33
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Yamakita N, Iwamoto S, Tsuchiya S. Predissociation of Excited Acetylene in the ÃAu State around the Adiabatic Dissociation Threshold as Studied by LIF and H-Atom Action Spectroscopy. J Phys Chem A 2003. [DOI: 10.1021/jp0217785] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Nami Yamakita
- Department of Chemical and Biological Sciences, Faculty of Science, Japan Women's University, Mejirodai, Bunkyo-ku, Tokyo 112-8681, Japan
| | - Sayoko Iwamoto
- Department of Chemical and Biological Sciences, Faculty of Science, Japan Women's University, Mejirodai, Bunkyo-ku, Tokyo 112-8681, Japan
| | - Soji Tsuchiya
- Department of Chemical and Biological Sciences, Faculty of Science, Japan Women's University, Mejirodai, Bunkyo-ku, Tokyo 112-8681, Japan
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Affiliation(s)
- Kent M. Ervin
- Department of Chemistry and Chemical Physics Program, University of Nevada, Reno, Nevada 89557, and Chemistry Department, Ithaca College, Ithaca, New York 14850
| | - Vincent F. DeTuri
- Department of Chemistry and Chemical Physics Program, University of Nevada, Reno, Nevada 89557, and Chemistry Department, Ithaca College, Ithaca, New York 14850
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35
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Mebel A, Kaiser R. An ab initio study on the formation of interstellar tricarbon isomers l-C3(X1Σg+) and c-C3(X3A2′). Chem Phys Lett 2002. [DOI: 10.1016/s0009-2614(02)00781-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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36
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Boyé S, Campos A, Douin S, Fellows C, Gauyacq D, Shafizadeh N, Halvick P, Boggio-Pasqua M. Visible emission from the vibrationally hot C2H radical following vacuum-ultraviolet photolysis of acetylene: Experiment and theory. J Chem Phys 2002. [DOI: 10.1063/1.1471239] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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Läuter A, Lee K, Jung K, Vatsa R, Mittal J, Volpp HR. Absolute primary H atom quantum yield measurements in the 193.3 and 121.6 nm photodissociation of acetylene. Chem Phys Lett 2002. [DOI: 10.1016/s0009-2614(02)00625-5] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Bar I, Rosenwaks S. Controlling bond cleavage and probing intramolecular dynamics via photodissociation of rovibrationally excited molecules. INT REV PHYS CHEM 2001. [DOI: 10.1080/01442350110076484] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Affiliation(s)
- H Sato
- Laser Photochemistry Research Group, Department of Chemistry for Materials, Faculty of Engineering, Mi'e University, 1515 Kamihamacho, Tsu 514-8507, Japan.
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40
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Mebel AM, Yahalom A, Englman R, Baer M. The study of conical intersections between consecutive pairs of the five lowest 2A′ states of the C2H molecule. J Chem Phys 2001. [DOI: 10.1063/1.1389842] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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41
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Mebel AM, Hayashi M, Jackson WM, Wrobel J, Green M, Xu D, Lin SH. Branching ratios of C2 products in the photodissociation of C2H at 193 nm. J Chem Phys 2001. [DOI: 10.1063/1.1370942] [Citation(s) in RCA: 20] [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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42
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Mebel AM, Baer M, Rozenbaum VM, Lin SH. Ab initio study of nonadiabatic coupling matrix elements between excited 22A′ and 32A′ electronic states of C2H. Chem Phys Lett 2001. [DOI: 10.1016/s0009-2614(01)00110-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Chiang WY, Hsu YC. Fluorescence lifetimes and predissociation processes in the B̃ 2A′ state of CCH. J Chem Phys 2000. [DOI: 10.1063/1.481339] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Schmid RP, Ganot Y, Bar I, Rosenwaks S. Combination bands versus overtone stretch excitation and rotational effects in vibrationally mediated photodissociation of acetylene. J Chem Phys 1998. [DOI: 10.1063/1.477567] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Mebel AM, Jackson WM, Chang AHH, Lin SH. Photodissociation Dynamics of Propyne and Allene: A View from ab Initio Calculations of the C3Hn (n = 1−4) Species and the Isomerization Mechanism for C3H2. J Am Chem Soc 1998. [DOI: 10.1021/ja9727169] [Citation(s) in RCA: 117] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A. M. Mebel
- Contribution from the Institute of Atomic and Molecular Sciences, Academia Sinica, P.O. Box 23-166, Taipei 10764, Taiwan, ROC, Department of Chemistry, University of California, Davis, California 95616, Department of Chemistry, National Taiwan University, Taipei 106, Taiwan, ROC, and Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85284-1604
| | - W. M. Jackson
- Contribution from the Institute of Atomic and Molecular Sciences, Academia Sinica, P.O. Box 23-166, Taipei 10764, Taiwan, ROC, Department of Chemistry, University of California, Davis, California 95616, Department of Chemistry, National Taiwan University, Taipei 106, Taiwan, ROC, and Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85284-1604
| | - A. H. H. Chang
- Contribution from the Institute of Atomic and Molecular Sciences, Academia Sinica, P.O. Box 23-166, Taipei 10764, Taiwan, ROC, Department of Chemistry, University of California, Davis, California 95616, Department of Chemistry, National Taiwan University, Taipei 106, Taiwan, ROC, and Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85284-1604
| | - S. H. Lin
- Contribution from the Institute of Atomic and Molecular Sciences, Academia Sinica, P.O. Box 23-166, Taipei 10764, Taiwan, ROC, Department of Chemistry, University of California, Davis, California 95616, Department of Chemistry, National Taiwan University, Taipei 106, Taiwan, ROC, and Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85284-1604
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Cui Q, Morokuma K. Ab initio molecular orbital studies on the structure, energies, and photodissociation of the electronic excited states of C2H. J Chem Phys 1998. [DOI: 10.1063/1.475424] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Mordaunt DH, Ashfold MNR, Dixon RN, Löffler P, Schnieder L, Welge KH. Near threshold photodissociation of acetylene. J Chem Phys 1998. [DOI: 10.1063/1.475415] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Sorkhabi O, Blunt VM, Lin H, Xu D, Wrobel J, Price R, Jackson WM. Photodissociation of C2H at 193 nm: Branching ratios for the formation of C2 in the X 1Σg+, A 1Πu, and B′ 1Σg+ states. J Chem Phys 1997. [DOI: 10.1063/1.475281] [Citation(s) in RCA: 24] [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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