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Rotational spectral studies of O(1D) insertion reactions with methane and ethylene: Methanol and vinyl alcohol in a supersonic expansion. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2015.04.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Wang F, Lipciuc ML, Kartakoullis A, Glodic P, Samartzis PC, Yang X, Kitsopoulos TN. Slice imaging of methyl bromide photofragmentation at 193 nm. Phys Chem Chem Phys 2014; 16:599-606. [DOI: 10.1039/c3cp53139b] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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3
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Brouard M, Duxon S, Simons J. Doppler-Resolved Laser Probing of Photon-Initiated Bimolecular Collisions O(1D) + CH4→ OH(v,N) + CH3. Isr J Chem 2013. [DOI: 10.1002/ijch.199400011] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Imaging the O(1D) + CD4 → OD + CD3 reaction dynamics: Probing vibrationally and rotationally excited CD3 products. J Chem Phys 2012; 137:224301. [DOI: 10.1063/1.4767397] [Citation(s) in RCA: 8] [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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Shuai Q, Pan H, Yang J, Zhang D, Jiang B, Dai D, Yang X. Imaging the O((1)D) + CD4 → OD + CD3 Reaction Dynamics: The Threshold of Abstraction Pathway. J Phys Chem Lett 2012; 3:1310-1314. [PMID: 26286775 DOI: 10.1021/jz300453f] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The O((1)D) + CD4 → OD + CD3 reaction was investigated using the crossed molecular beam technique with sliced velocity map imaging at four different collision energies: 1.6, 2.8, 4.6, and 6.8 kcal/mol. The vibrational ground state product CD3 was detected using a (2 + 1) resonance-enhanced multiphoton ionization (REMPI). Remarkably different features were found in the forward and backward scatterings, and gradually changed with the collision energy. These features were attributed to two distinctive reaction mechanisms-insertion and abstraction-that occur on the ground and excited state surfaces, respectively. Contributions from the two mechanisms were extracted from the experiment results, and a positive correlation was found between the abstraction proportion and the collision energy. The threshold for the abstraction pathway was determined and compared with results from calculations.
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Affiliation(s)
- Quan Shuai
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, P. R. China
| | - Huilin Pan
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, P. R. China
| | - Jiayue Yang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, P. R. China
| | - Dong Zhang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, P. R. China
| | - Bo Jiang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, P. R. China
| | - Dongxu Dai
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, P. R. China
| | - Xueming Yang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, P. R. China
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Waring C, King KL, Costen ML, McKendrick KG. Dynamics of the Gas−Liquid Interfacial Reaction of O(1D) with a Liquid Hydrocarbon. J Phys Chem A 2011; 115:7210-9. [DOI: 10.1021/jp200292n] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Carla Waring
- School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K
| | - Kerry L King
- School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K
| | - Matthew L Costen
- School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K
| | - Kenneth G McKendrick
- School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K
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Chen HF, Liang CW, Lin JJ, Lee YP, Ogilvie JF, Xu ZF, Lin MC. Dynamics of reactions O((1)D)+C(6)H(6) and C(6)D(6). J Chem Phys 2008; 129:174303. [PMID: 19045343 DOI: 10.1063/1.2994734] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The reaction between O((1)D) and C(6)H(6) (or C(6)D(6)) was investigated with crossed-molecular-beam reactive scattering and time-resolved Fourier-transform infrared spectroscopy. From the crossed-molecular-beam experiments, four product channels were identified. The major channel is the formation of three fragments CO+C(5)H(5)+H; the channels for formation of C(5)H(6)+CO and C(6)H(5)O+H from O((1)D)+C(6)H(6) and OD+C(6)D(5) from O((1)D)+C(6)D(6) are minor. The angular distributions for the formation of CO and H indicate a mechanism involving a long-lived collision complex. Rotationally resolved infrared emission spectra of CO (1<or=upsilon<or=6) and OH (1<or=upsilon<or=3) were recorded with a step-scan Fourier-transform spectrometer. At the earliest applicable period (0-5 mus), CO shows a rotational distribution corresponding to a temperature of approximately 1480 K for upsilon=1 and 920-700 K for upsilon=2-6, indicating possible involvement of two reaction channels; the vibrational distribution of CO corresponds to a temperature of approximately 5800 K. OH shows a rotational distribution corresponding to a temperature of approximately 650 K for upsilon=1-3 and a vibrational temperature of approximately 4830 K. The branching ratio of [CO]/[OH]=2.1+/-0.4 for O((1)D)+C(6)H(6) and [CO]/[OD]>2.9 for O((1)D)+C(6)D(6) is consistent with the expectation for an abstraction reaction. The mechanism of the reaction may be understood from considering the energetics of the intermediate species and transition states calculated at the G2M(CC5) level of theory for the O((1)D)+C(6)H(6) reaction. The experimentally observed branching ratios and deuterium isotope effect are consistent with those predicted from calculations.
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Affiliation(s)
- Hui-Fen Chen
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
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Martin MR, Brown DJA, Chiou AS, Zare RN. Reaction of Cl with CD4 excited to the second C-D stretching overtone. J Chem Phys 2007; 126:044315. [PMID: 17286478 DOI: 10.1063/1.2431368] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The effects of vibrational excitation on the Cl+CD(4) reaction are investigated by preparing three nearly isoenergetic vibrational states: mid R:3000 at 6279.66 cm(-1), |2100> at 6534.20 cm(-1), and |1110> at 6764.24 cm(-1), where |D(1)D(2)D(3)D(4)> identifies the number of vibrational quanta in each C-D oscillator. Vibrational excitation of the perdeuteromethane is via direct infrared pumping. The reaction is initiated by photolysis of molecular chlorine at 355 nm. The nascent methyl radical product distribution is measured by 2+1 resonance-enhanced multiphoton ionization at 330 nm. The resulting CD(3) state distributions reveal a preference to remove all energy available in the most excited C-D oscillator. Although the energetics are nearly identical, the authors observe strong mode specificity in which the CD(3) state distributions markedly differ between the three Cl-atom reactions. Reaction with CD(4) prepared in the |3000> mode leads to CD(3) products populated primarily in the ground state, reaction with CD(4) prepared in the |2100> mode leads primarily to CD(3) with one quantum of stretch excitation, and reaction with CD(4) prepared in the |1110> mode leads primarily to CD(3) with one quantum of C-D stretch excitation in two oscillators. There are some minor deviations from this behavior, most notably that the Cl atom is able to abstract more energy than is available in a single C-D oscillator, as in the case of |2100>, wherein a small population of ground-state CD(3) is observed. These exceptions likely result from the mixings between different second overtone stretch combination bands. They also measure isotropic and anisotropic time-of-flight profiles of CD(3) (nu(1)=1,2) products from the Cl+CD(4) |2100> reaction, providing speed distributions, spatial anisotropies, and differential cross sections that indicate that energy introduced as vibrational energy into the system essentially remains as such throughout the course of the reaction.
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Affiliation(s)
- Marion R Martin
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, USA
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Abstract
In this article, we briefly review the recent experimental studies of the multiple channel dynamics of the O((1)D) reaction with alkane molecules using the significantly improved universal crossed molecular beam technique. In these reactions, the dominant reaction mechanism is found to be an O atom insertion into the C-H bond, while a direct abstraction mechanism is also present in the OH formation channel. While the reaction mechanism is similar for all of these reactions, the product channels are quite different because of the significantly different energetics of these reaction channels. In the O((1)D) reaction with methane, OH formation is the dominant process while H atom formation is also a significant process. In the O((1)D) reaction with ethane, however, the CH(3) + CH(2)OH is the most important process, OH formation is still significant and H atom formation is of minor importance. A new type of O atom insertion mechanism (insertion into a C-C bond) is also inferred from the O((1)D) reaction with cyclopropane. Through these comprehensive studies, complete dynamical pictures of many multiple channel chemical reactions could be obtained. Such detailed studies could provide a unique bridge between dynamics and kinetics research.
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Affiliation(s)
- Xueming Yang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, P. R. China
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Yu HG, Muckerman JT. MRCI Calculations of the Lowest Potential Energy Surface for CH3OH and Direct ab Initio Dynamics Simulations of the O(1D) + CH4 Reaction. J Phys Chem A 2004. [DOI: 10.1021/jp049642p] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hua-Gen Yu
- Department of Chemistry, Brookhaven National Laboratory, Upton, New York 11973-5000
| | - James T. Muckerman
- Department of Chemistry, Brookhaven National Laboratory, Upton, New York 11973-5000
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Wang CC, Shu J, Lin JJ, Lee YT, Yang X, Nguyen TL, Mebel AM. Experimental and theoretical investigations of the O([sup 1]D) reaction with cyclopropane. J Chem Phys 2002. [DOI: 10.1063/1.1466468] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Shu J, Lin JJ, Wang CC, Lee YT, Yang X, Nguyen TL, Mebel AM. O(1D) reaction with cyclopropane: Evidence of O atom insertion into the C–C bond. J Chem Phys 2001. [DOI: 10.1063/1.1383792] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Miller CC, van Zee RD, Stephenson JC. Mechanism of the reaction, CH4+O(1D2)→CH3+OH, studied by ultrafast and state-resolved photolysis/probe spectroscopy of the CH4⋅O3 van der Waals complex. J Chem Phys 2001. [DOI: 10.1063/1.1331615] [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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Lin JJ, Shu J, Lee YT, Yang X. Multiple dynamical pathways in the O([sup 1]D)+CH[sub 4] reaction: A comprehensive crossed beam study. J Chem Phys 2000. [DOI: 10.1063/1.1289462] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Lin JJ, Harich S, Lee YT, Yang X. Dynamics of the O(1D)+CH4 reaction: Atomic hydrogen channel vs molecular hydrogen channel. J Chem Phys 1999. [DOI: 10.1063/1.479024] [Citation(s) in RCA: 45] [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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Lin JJ, Lee YT, Yang X. Crossed molecular beam studies of the O(1D)+CH4 reaction: Evidences for the CH2OH+H channel. J Chem Phys 1998. [DOI: 10.1063/1.476887] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Wada SI, Obi K. Photochemical Reaction Dynamics of O(1D) with Saturated Hydrocarbons, CH4, C2H6, and C3H8, under Bulk Conditions and in van der Waals Complexes. J Phys Chem A 1998. [DOI: 10.1021/jp973344t] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Sweeney GM, Watson A, McKendrick KG. Rotational and spin-orbit effects in the dynamics of O(3Pj)+hydrocarbon reactions. I. Experimental results. J Chem Phys 1997. [DOI: 10.1063/1.474021] [Citation(s) in RCA: 78] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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Xin Q, Zhu X. Superthermal vibrational state distribution of CD3 thermally desorbed from GaAs(100). J Chem Phys 1996. [DOI: 10.1063/1.471607] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Johnson RD, Hudgens JW. Structural and Thermochemical Properties of Hydroxymethyl (CH2OH) Radicals and Cations Derived from Observations of B̃2A‘(3p) ← X̃2A‘‘ Electronic Spectra and fromab InitioCalculations. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp961399+] [Citation(s) in RCA: 91] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Schott R, Schlütter J, Olzmann M, Kleinermanns K. CH3 state distributions form the reactions of O(1D) with saturated and chlorinated hydrocarbons. J Chem Phys 1995. [DOI: 10.1063/1.468828] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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van Zee RD, Stephenson JC. Lifetime of the CH3OH* intermediate in the reaction CH4+O(1D2)→CH3OH*→CH3+OH. J Chem Phys 1995. [DOI: 10.1063/1.469132] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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van Zee RD, Stephenson JC, Casassa MP. OH (ν, J) distributions from the reaction between CH4 and O (1D2), initiated in CH4·O3 clusters. Chem Phys Lett 1994. [DOI: 10.1016/0009-2614(94)00445-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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