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Lucas M, Qin Y, Yang L, Sun G, Zhang J. Ultraviolet Photodissociation Dynamics of the 1-Methylallyl Radical. J Phys Chem A 2024; 128:5556-5566. [PMID: 38953902 DOI: 10.1021/acs.jpca.4c02535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
The ultraviolet (UV) photodissociation dynamics of the 1-methylallyl (1-MA) radical were studied using the high-n Rydberg atom time-of-flight (HRTOF) technique in the wavelength region of 226-244 nm. The 1-MA radicals were produced by 193 nm photodissociation of the 3-chloro-1-butene and 1-chloro-2-butene precursor. The 1 + 1 REMPI spectrum of 1-MA agrees with the previous UV absorption spectrum in this wavelength region. Quantum chemistry calculations show that the UV absorption is mainly attributed to the 3pz Rydberg state (perpendicular to the allyl plane). The H atom photofragment yield (PFY) spectrum of 1-MA from 3-chloro-1-butene displays a broad peak around 230 nm, while that from 1-chloro-2-butene peaks at ∼236 nm. The translational energy distributions of the H atom loss product channel, P (ET)'s, show a bimodal distribution indicating two dissociation pathways in 1-MA. The major pathway is isotropic in product angular distribution with β ∼ 0 and has a low fraction of average translational energy in the total excess energy, ⟨fT⟩, in the range of 0.13-0.17; this pathway corresponds to unimolecular dissociation of 1-MA after internal conversion to form 1,3-butadiene + H. The minor pathway is anisotropic with β ∼ -0.23 and has a large ⟨fT⟩ of ∼0.62-0.72. This fast pathway suggests a direct dissociation of the methyl H atom on a repulsive excited state surface or the repulsive part of the ground state surface to form 1,3-butadiene + H. The fast/slow pathway branching ratio is in the range of 0.03-0.08.
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Affiliation(s)
- Michael Lucas
- Department of Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii 96822, United States
| | - Yuan Qin
- Department of Chemistry, University of California at Riverside, Riverside, California 92521, United States
| | - Lei Yang
- Department of Chemistry, University of California at Riverside, Riverside, California 92521, United States
| | - Ge Sun
- Department of Chemistry, University of California at Riverside, Riverside, California 92521, United States
| | - Jingsong Zhang
- Department of Chemistry, University of California at Riverside, Riverside, California 92521, United States
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Yu C, Xiao Z, Chu W, Zhang Q, Chen Y, Zhao D. High-Resolution Electronic Spectrum of the 1,4,6-Heptatrienyl Radical in the Gas Phase. J Phys Chem A 2022; 126:8398-8403. [DOI: 10.1021/acs.jpca.2c05596] [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]
Affiliation(s)
- Chunting Yu
- Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
| | - Zengjun Xiao
- Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
| | - Wangyou Chu
- Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
| | - Qiang Zhang
- Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
| | - Yang Chen
- Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
| | - Dongfeng Zhao
- Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
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Loos PF, Scemama A, Boggio-Pasqua M, Jacquemin D. Mountaineering Strategy to Excited States: Highly Accurate Energies and Benchmarks for Exotic Molecules and Radicals. J Chem Theory Comput 2020; 16:3720-3736. [DOI: 10.1021/acs.jctc.0c00227] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Pierre-François Loos
- Laboratoire de Chimie et Physique Quantiques, CNRS, UPS, Université de Toulouse, 31000 Toulouse, France
| | - Anthony Scemama
- Laboratoire de Chimie et Physique Quantiques, CNRS, UPS, Université de Toulouse, 31000 Toulouse, France
| | - Martial Boggio-Pasqua
- Laboratoire de Chimie et Physique Quantiques, CNRS, UPS, Université de Toulouse, 31000 Toulouse, France
| | - Denis Jacquemin
- CEISAM UMR 6230, CNRS, Université de Nantes, F-44000 Nantes, France
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Sun G, Lucas M, Song Y, Zhang J, Brazier C, Houston PL, Bowman JM. H atom Product Channels in the Ultraviolet Photodissociation of the 2-Propenyl Radical. J Phys Chem A 2019; 123:9957-9965. [DOI: 10.1021/acs.jpca.9b07797] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ge Sun
- Department of Chemistry, University of California at Riverside, Riverside, California 92521, United States
| | - Michael Lucas
- Department of Chemistry, University of California at Riverside, Riverside, California 92521, United States
| | - Yu Song
- Department of Chemistry, University of California at Riverside, Riverside, California 92521, United States
| | - Jingsong Zhang
- Department of Chemistry, University of California at Riverside, Riverside, California 92521, United States
| | - Christopher Brazier
- Department of Chemistry and Biochemistry, California State University, Long Beach, Long Beach, California 90840, United States
| | - Paul L. Houston
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States and
- Department of Chemistry & Chemical Biology, Cornell University, Ithaca, New York 14850, United States
| | - Joel M. Bowman
- Department of Chemistry and Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322, United States
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Röder A, Petersen J, Issler K, Fischer I, Mitrić R, Poisson L. Exploring the Excited-State Dynamics of Hydrocarbon Radicals, Biradicals, and Carbenes Using Time-Resolved Photoelectron Spectroscopy and Field-Induced Surface Hopping Simulations. J Phys Chem A 2019; 123:10643-10662. [DOI: 10.1021/acs.jpca.9b06346] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anja Röder
- Institute of Physical and Theoretical Chemistry, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
- LIDYL, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif-sur-Yvette, France
| | - Jens Petersen
- Institute of Physical and Theoretical Chemistry, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Kevin Issler
- Institute of Physical and Theoretical Chemistry, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Ingo Fischer
- Institute of Physical and Theoretical Chemistry, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Roland Mitrić
- Institute of Physical and Theoretical Chemistry, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Lionel Poisson
- LIDYL, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif-sur-Yvette, France
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Bhattacherjee A, Attar AR, Leone SR. Transition state region in the A-Band photodissociation of allyl iodide—A femtosecond extreme ultraviolet transient absorption study. J Chem Phys 2016; 144:124311. [DOI: 10.1063/1.4944930] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Aditi Bhattacherjee
- Department of Chemistry, University of California, Berkeley, California 94720, USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Andrew R. Attar
- Department of Chemistry, University of California, Berkeley, California 94720, USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Stephen R. Leone
- Department of Chemistry, University of California, Berkeley, California 94720, USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Physics, University of California, Berkeley, California 94720, USA
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Lucas M, Song Y, Zhang J, Brazier C, Houston PL, Bowman JM. Ultraviolet Photodissociation Dynamics of the 1-Propenyl Radical. J Phys Chem A 2016; 120:5248-56. [DOI: 10.1021/acs.jpca.6b01056] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michael Lucas
- Department of Chemistry, University of California at Riverside, Riverside, California 92521, United States
| | - Yu Song
- Department of Chemistry, University of California at Riverside, Riverside, California 92521, United States
| | - Jingsong Zhang
- Department of Chemistry and Air Pollution
Research Center, University of California at Riverside, Riverside, California 92521, United States
| | - Christopher Brazier
- Department of Chemistry and Biochemistry, California State University, Long Beach Long Beach, California 90840, United States
| | - Paul L. Houston
- School
of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332
- Department of Chemical Biology, Cornell University, Ithaca, New York 14850, United States
| | - Joel M. Bowman
- Department of Chemistry and Cherry
L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322, United States
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9
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Racine J, Hagebaum-Reignier D, Carissan Y, Humbel S. Recasting wave functions into valence bond structures: A simple projection method to describe excited states. J Comput Chem 2016; 37:771-9. [DOI: 10.1002/jcc.24267] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Revised: 11/09/2015] [Accepted: 11/11/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Julien Racine
- Aix Marseille Université, CNRS, Centrale Marseille; iSm2 UMR 7313 Marseille 13397 France
| | | | - Yannick Carissan
- Aix Marseille Université, CNRS, Centrale Marseille; iSm2 UMR 7313 Marseille 13397 France
| | - Stéphane Humbel
- Aix Marseille Université, CNRS, Centrale Marseille; iSm2 UMR 7313 Marseille 13397 France
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Song Y, Lucas M, Alcaraz M, Zhang J, Brazier C. Ultraviolet Photodissociation Dynamics of the Allyl Radical via the B̃2A1(3s), C̃2B2(3py), and Ẽ2B1(3px) Electronic Excited States. J Phys Chem A 2015; 119:12318-28. [DOI: 10.1021/acs.jpca.5b06684] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yu Song
- Department
of Chemistry, University of California at Riverside, Riverside, California 92521, United States
| | - Michael Lucas
- Department
of Chemistry, University of California at Riverside, Riverside, California 92521, United States
| | - Maria Alcaraz
- Department
of Chemistry, University of California at Riverside, Riverside, California 92521, United States
| | - Jingsong Zhang
- Department
of Chemistry, University of California at Riverside, Riverside, California 92521, United States
| | - Christopher Brazier
- Department of Chemistry and
Biochemistry, California State University, Long Beach, Long Beach, California 90840, United States
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11
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Kramer ZC, Carpenter BK, Ezra GS, Wiggins S. Reaction Path Bifurcation in an Electrocyclic Reaction: Ring-Opening of the Cyclopropyl Radical. J Phys Chem A 2015; 119:6611-30. [DOI: 10.1021/acs.jpca.5b02834] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zeb C. Kramer
- Department
of Chemistry and Chemical Biology, Cornell University, Baker Laboratory, Ithaca, New York 14853 United States
| | - Barry K. Carpenter
- School
of Chemistry, University of Cardiff, Cardiff CF10 3AT, United Kingdom
| | - Gregory S. Ezra
- Department
of Chemistry and Chemical Biology, Cornell University, Baker Laboratory, Ithaca, New York 14853 United States
| | - Stephen Wiggins
- School
of Mathematics, University of Bristol, Bristol BS8 1TW, United Kingdom
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12
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Tabor DP, Harding ME, Ichino T, Stanton JF. High-Accuracy Extrapolated Ab Initio Thermochemistry of the Vinyl, Allyl, and Vinoxy Radicals. J Phys Chem A 2012; 116:7668-76. [DOI: 10.1021/jp302527n] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Daniel P. Tabor
- Institute for Theoretical Chemistry, Department of
Chemistry and Biochemistry, The University of Texas at Austin, 105 E. 24th St., A5300, Austin, Texas 78712-0165,
United States
| | - Michael E. Harding
- Institute for Theoretical Chemistry, Department of
Chemistry and Biochemistry, The University of Texas at Austin, 105 E. 24th St., A5300, Austin, Texas 78712-0165,
United States
| | - Takatoshi Ichino
- Institute for Theoretical Chemistry, Department of
Chemistry and Biochemistry, The University of Texas at Austin, 105 E. 24th St., A5300, Austin, Texas 78712-0165,
United States
| | - John F. Stanton
- Institute for Theoretical Chemistry, Department of
Chemistry and Biochemistry, The University of Texas at Austin, 105 E. 24th St., A5300, Austin, Texas 78712-0165,
United States
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14
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Matsugi A, Suma K, Miyoshi A. Kinetics and Mechanisms of the Allyl + Allyl and Allyl + Propargyl Recombination Reactions. J Phys Chem A 2011; 115:7610-24. [DOI: 10.1021/jp203520j] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Akira Matsugi
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Kohsuke Suma
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Akira Miyoshi
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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Chen C, Braams B, Lee DY, Bowman JM, Houston PL, Stranges D. The Dynamics of Allyl Radical Dissociation. J Phys Chem A 2011; 115:6797-804. [DOI: 10.1021/jp109344g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chao Chen
- Department of Chemistry Emory University Atlanta, Georgia 30322, United States
| | - Bastiaan Braams
- Department of Chemistry Emory University Atlanta, Georgia 30322, United States
| | - David Y. Lee
- School of Chemistry and Biochemistry Georgia Institute of Technology Atlanta, Georgia 30332, United States
| | - Joel M. Bowman
- Department of Chemistry Emory University Atlanta, Georgia 30322, United States
| | - Paul L. Houston
- School of Chemistry and Biochemistry Georgia Institute of Technology Atlanta, Georgia 30332, United States
| | - Domenico Stranges
- Dipartimento di Chimica Università “La Sapienza” P.le A. Moro 5 Rome I-00185, Italy
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Gasser M, Frey JA, Hostettler JM, Bach A. Probing for non-statistical effects in dissociation of the 1-methylallyl radical. Chem Commun (Camb) 2011; 47:301-3. [DOI: 10.1039/c0cc01899f] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Gasser M, Frey JA, Hostettler JM, Bach A, Chen P. Vibronic Structure of the 3s and 3p Rydberg States of the Allyl Radical. J Phys Chem A 2009; 114:4704-11. [DOI: 10.1021/jp907524s] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michael Gasser
- Laboratorium für Organische Chemie, ETH Zürich, CH-8093 Zürich, Switzerland
| | - Jann A. Frey
- Laboratorium für Organische Chemie, ETH Zürich, CH-8093 Zürich, Switzerland
| | | | - Andreas Bach
- Laboratorium für Organische Chemie, ETH Zürich, CH-8093 Zürich, Switzerland
| | - Peter Chen
- Laboratorium für Organische Chemie, ETH Zürich, CH-8093 Zürich, Switzerland
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Gasser M, Schulenburg AM, Dietiker PM, Bach A, Merkt F, Chen P. Single-photon and resonance-enhanced multiphoton threshold ionization of the allyl radical. J Chem Phys 2009; 131:014304. [DOI: 10.1063/1.3157185] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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Hostettler JM, Castiglioni L, Bach A, Chen P. Photochemical deactivation pathways of the Ã-state allyl radical. Phys Chem Chem Phys 2009; 11:8262-5. [DOI: 10.1039/b909830e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Gasser M, Bach A, Chen P. Photodissociation dynamics of the 2-methylallyl radical. Phys Chem Chem Phys 2008; 10:1133-8. [DOI: 10.1039/b715252c] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Guo Y, Mebel AM, Zhang F, Gu X, Kaiser RI. Crossed molecular beam studies of the reactions of allyl radicals, C3H5(X2A2), with methylacetylene (CH3CCH(X1A1)), allene (H2CCCH2(X1A1)), and their isotopomers. J Phys Chem A 2007; 111:4914-21. [PMID: 17516638 DOI: 10.1021/jp0714466] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The chemical dynamics of the reaction of allyl radicals, C(3)H(5)(X(2)A(2)), with two C(3)H(4) isomers, methylacetylene (CH(3)CCH(X(1)A(1))) and allene (H(2)CCCH(2)(X(1)A(1))) together with their (partially) deuterated counterparts, were unraveled under single-collision conditions at collision energies of about 125 kJ mol(-1) utilizing a crossed molecular beam setup. The experiments indicate that the reactions are indirect via complex formation and proceed via an addition of the allyl radical with its terminal carbon atom to the terminal carbon atom of the allene and of methylacetylene (alpha-carbon atom) to form the intermediates H(2)CCHCH(2)CH(2)CCH(2) and H(2)CCHCH(2)CHCCH(3), respectively. The lifetimes of these intermediates are similar to their rotational periods but too short for a complete energy randomization to occur. Experiments with D4-allene and D4-methylacetylene verify explicitly that the allyl group stays intact: no hydrogen emission was observed but only the release of deuterium atoms from the perdeuterated reactants. Further isotopic substitution experiments with D3-methylacetylene combined with the nonstatistical nature of the reaction suggest that the intermediates decompose via hydrogen atom elimination to 1,3,5-hexatriene, H(2)CCHCH(2)CHCCH(2), and 1-hexen-4-yne, H(2)CCHCH(2)CCCH(3), respectively, via tight exit transition states located about 10-15 kJ mol(-1) above the separated products. The overall reactions were found to be endoergic by 98 +/- 4 kJ mol(-1) and have characteristic threshold energies to reaction between 105 and 110 kJ mol(-1). Implications of these findings to combustion and interstellar chemistry are discussed.
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Affiliation(s)
- Y Guo
- Department of Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii 96822, USA
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