1
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Volokhov VM, Zyubina TS, Volokhov AV, Amosova ES, Varlamov DA, Lempert DB, Yanovskii LS. Quantum Chemical Simulation of Hydrocarbon Compounds with High Enthalpy. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2021. [DOI: 10.1134/s1990793121010127] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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2
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Volokhov VM, Zyubina TS, Volokhov AV, Amosova ES, Varlamov DA, Lempert DB, Yanovskii LS. Predictive Modeling of Molecules of High-Energy Heterocyclic Compounds. RUSS J INORG CHEM+ 2021. [DOI: 10.1134/s0036023621010113] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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3
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Zhao L, Doddipatla S, Kaiser RI, Lu W, Kostko O, Ahmed M, Tuli LB, Morozov AN, Howlader AH, Wnuk SF, Mebel AM, Azyazov VN, Mohamed RK, Fischer FR. Gas-phase synthesis of corannulene – a molecular building block of fullerenes. Phys Chem Chem Phys 2021; 23:5740-5749. [DOI: 10.1039/d0cp06537d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Corannulene can be formed through molecular mass growth processes in circumstellar envelopes.
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4
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Zhao L, Prendergast MB, Kaiser RI, Xu B, Lu W, Ablikim U, Ahmed M, Oleinikov AD, Azyazov VN, Mebel AM, Howlader AH, Wnuk SF. Reactivity of the Indenyl Radical (C 9 H 7 ) with Acetylene (C 2 H 2 ) and Vinylacetylene (C 4 H 4 ). Chemphyschem 2019; 20:1437-1447. [PMID: 30938059 DOI: 10.1002/cphc.201900052] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 02/28/2019] [Indexed: 11/09/2022]
Abstract
The reactions of the indenyl radicals with acetylene (C2 H2 ) and vinylacetylene (C4 H4 ) is studied in a hot chemical reactor coupled to synchrotron based vacuum ultraviolet ionization mass spectrometry. These experimental results are combined with theory to reveal that the resonantly stabilized and thermodynamically most stable 1-indenyl radical (C9 H7 . ) is always formed in the pyrolysis of 1-, 2-, 6-, and 7-bromoindenes at 1500 K. The 1-indenyl radical reacts with acetylene yielding 1-ethynylindene plus atomic hydrogen, rather than adding a second acetylene molecule and leading to ring closure and formation of fluorene as observed in other reaction mechanisms such as the hydrogen abstraction acetylene addition or hydrogen abstraction vinylacetylene addition pathways. While this reaction mechanism is analogous to the bimolecular reaction between the phenyl radical (C6 H5 . ) and acetylene forming phenylacetylene (C6 H5 CCH), the 1-indenyl+acetylene→1-ethynylindene+hydrogen reaction is highly endoergic (114 kJ mol-1 ) and slow, contrary to the exoergic (-38 kJ mol-1 ) and faster phenyl+acetylene→phenylacetylene+hydrogen reaction. In a similar manner, no ring closure leading to fluorene formation was observed in the reaction of 1-indenyl radical with vinylacetylene. These experimental results are explained through rate constant calculations based on theoretically derived potential energy surfaces.
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Affiliation(s)
- Long Zhao
- Department of Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii, 96822, USA
| | - Matthew B Prendergast
- Department of Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii, 96822, USA
| | - Ralf I Kaiser
- Department of Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii, 96822, USA
| | - Bo Xu
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Wenchao Lu
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Utuq Ablikim
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Musahid Ahmed
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | | | | | - Alexander M Mebel
- Samara National Research University, Samara, 443086, Russia.,Department of Chemistry and Biochemistry, Florida International University, Miami, FL 33199, USA
| | - A Hasan Howlader
- Department of Chemistry and Biochemistry, Florida International University, Miami, FL 33199, USA
| | - Stanislaw F Wnuk
- Department of Chemistry and Biochemistry, Florida International University, Miami, FL 33199, USA
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5
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Zhu C, Frigge R, Turner AM, Abplanalp MJ, Sun BJ, Chen YL, Chang AHH, Kaiser RI. A vacuum ultraviolet photoionization study on the formation of methanimine (CH 2NH) and ethylenediamine (NH 2CH 2CH 2NH 2) in low temperature interstellar model ices exposed to ionizing radiation. Phys Chem Chem Phys 2019; 21:1952-1962. [PMID: 30632569 DOI: 10.1039/c8cp06002a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Methylamine (CH3NH2) and methanimine (CH2NH) represent essential building blocks in the formation of amino acids in interstellar and cometary ices. In our study, by exploiting isomer selective detection of the reaction products via photoionization coupled with reflectron time of flight mass spectrometry (Re-TOF-MS), we elucidate the formation of methanimine and ethylenediamine (NH2CH2CH2NH2) in methylamine ices exposed to energetic electrons as a proxy for secondary electrons generated by energetic cosmic rays penetrating interstellar and cometary ices. Interestingly, the two products methanimine and ethylenediamine are isoelectronic to formaldehyde (H2CO) and ethylene glycol (HOCH2CH2OH), respectively. Their formation has been confirmed in interstellar ice analogs consisting of methanol (CH3OH) which is ioselectronic to methylamine. Both oxygen-bearing species formed in methanol have been detected in the interstellar medium (ISM), while for methanimine and ethylenediamine only methanimine has been identified so far. In comparison with the methanol ice products and our experimental findings, we predict that ethylenediamine should be detectable in these astronomical sources, where methylamine and methanimine are present.
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Affiliation(s)
- Cheng Zhu
- W. M. Keck Research Laboratory in Astrochemistry, University of Hawaii at Manoa, Honolulu, Hawaii 96822, USA.
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6
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Morozov AN, Mebel AM, Kaiser RI. A Theoretical Study of Pyrolysis of exo-Tetrahydrodicyclopentadiene and Its Primary and Secondary Unimolecular Decomposition Products. J Phys Chem A 2018; 122:4920-4934. [DOI: 10.1021/acs.jpca.8b02934] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alexander N. Morozov
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
| | - Alexander M. Mebel
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
| | - Ralf I. Kaiser
- Department of Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii 96822, United States
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7
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Belisario-Lara D, Mebel AM, Kaiser RI. Computational Study on the Unimolecular Decomposition of JP-8 Jet Fuel Surrogates III: Butylbenzene Isomers ( n-, s-, and t-C 14H 10). J Phys Chem A 2018; 122:3980-4001. [PMID: 29608299 DOI: 10.1021/acs.jpca.8b01836] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Ab initio G3(CCSD,MP2)//B3LYP/6-311G(d,p) calculations of potential energy surfaces have been carried out to unravel the mechanism of the initial stages of pyrolysis of three C10H14 isomers: n-, s-, and t-butylbenzenes. The computed energy and molecular parameters have been utilized in RRKM-master equation calculations to predict temperature- and pressure-dependent rate constants and product branching ratios for the primary unimolecular decomposition of these molecules and for the secondary decomposition of their radical fragments. The results showed that the primary dissociation of n-butylbenzene produces mostly benzyl (C7H7) + propyl (C3H7) and 1-phenyl-2-ethyl (C6H5C2H4) + ethyl (C2H5), with their relative yields strongly dependent on temperature and pressure, together with a minor amount of 1-phenyl-prop-3-yl (C9H11) + methyl (CH3). Secondary decomposition reactions that are anticipated to occur on a nanosecond scale under typical combustion conditions split propyl (C3H7) into ethylene (C2H4) + methyl (CH3), ethyl (C2H5) into ethylene (C2H4) + hydrogen (H), 1-phenyl-2-ethyl (C6H5C2H4) into mostly styrene (C8H8) + hydrogen (H) and to a lesser extent phenyl (C6H5) + ethylene (C2H4), and 1-phenyl-prop-3-yl (C9H11) into predominantly benzyl (C7H7) + ethylene (C2H4). The primary decomposition of s-butylbenzene is predicted to produce 1-phenyl-1-ethyl (C6H5CHCH3) + ethyl (C2H5) and a minor amount of 1-phenyl-prop-1-yl (C9H11) + methyl (CH3), and then 1-phenyl-1-ethyl (C6H5CHCH3) and 1-phenyl-prop-1-yl (C9H11) rapidly dissociate to styrene (C8H8) + hydrogen (H) and styrene (C8H8) + methyl (CH3), respectively. t-Butylbenzene decomposes nearly exclusively to 2-phenyl-prop-2-yl (C9H11) + methyl (CH3), and further, 2-phenyl-prop-2-yl (C9H11) rapidly eliminates a hydrogen atom to form 2-phenylpropene (C9H10). If hydrogen atoms or other reactive radicals are available to make a direct hydrogen-atom abstraction from butylbenzenes possible, the C10H13 radicals (1-phenyl-but-1-yl, 2-phenyl-but-2-yl, and t-phenyl-isobutyl) can be formed as the primary products from n-, s-, and t-butylbenzene, respectively. The secondary decomposition of 1-phenyl-but-1-yl leads to styrene (C8H8) + ethyl (C2H5), whereas 2-phenyl-but-2-yl and t-phenyl-isobutyl dissociate to 2-phenylpropene (C9H10) + methyl (CH3). Thus, the three butylbenzene isomers produce distinct but overlapping nascent pyrolysis fragments, which likely affect the successive oxidation mechanism and combustion kinetics of these JP-8 fuel components. Temperature- and pressure-dependent rate constants generated for the initial stages of pyrolysis of butylbenzenes are recommended for kinetic modeling.
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Affiliation(s)
- Daniel Belisario-Lara
- Department of Chemistry and Biochemistry , Florida International University , Miami , Florida 33199 , United States
| | - Alexander M Mebel
- Department of Chemistry and Biochemistry , Florida International University , Miami , Florida 33199 , United States
| | - Ralf I Kaiser
- Department of Chemistry , University of Hawaii at Manoa , Honolulu , Hawaii 96822 , United States
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8
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Garcia GA, Gans B, Krüger J, Holzmeier F, Röder A, Lopes A, Fittschen C, Alcaraz C, Loison JC. Valence shell threshold photoelectron spectroscopy of C3Hx (x = 0–3). Phys Chem Chem Phys 2018. [DOI: 10.1039/c8cp00510a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present the photoelectron spectra of C3Hx (x = 0–3) formed in a microwave discharge flow-tube reactor by consecutive H abstractions from C3H4 (C3Hx + F → C3Hx−1 + HF (x = 1–4)), but also from F + CH4 schemes by secondary reactions.
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Affiliation(s)
| | | | - Julia Krüger
- Synchrotron SOLEIL
- L'Orme des Merisiers
- Gif sur Yvette
- France
| | - Fabian Holzmeier
- Synchrotron SOLEIL
- L'Orme des Merisiers
- Gif sur Yvette
- France
- Laboratoire de Chimie Physique d'Orsay
| | - Anja Röder
- Synchrotron SOLEIL
- L'Orme des Merisiers
- Gif sur Yvette
- France
| | - Allan Lopes
- CNRS – Université Paris-Sud et Paris-Saclay
- Laboratoire de Chimie Physique
- UMR 8000
- Centre Universitaire Paris-Sud
- 91405 Orsay
| | | | - Christian Alcaraz
- CNRS – Université Paris-Sud et Paris-Saclay
- Laboratoire de Chimie Physique
- UMR 8000
- Centre Universitaire Paris-Sud
- 91405 Orsay
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9
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Tarczay G, Förstel M, Góbi S, Maksyutenko P, Kaiser RI. Synthesis of the Smallest Member of the Silylketene Family: H 3 SiC(H)=C=O. Chemphyschem 2017; 18:882-889. [PMID: 28129476 DOI: 10.1002/cphc.201601422] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Indexed: 11/08/2022]
Abstract
Exploiting photoionization reflectron time-of-flight mass spectrometry (PI-ReTOF-MS) combined with electronic structure calculations, it is shown that the hitherto elusive silylketene molecule (H3 SiC(H)=C=O)-the isovalent counterpart of the well-known methylketene molecule-is forming via interaction of energetic electrons with low-temperature silane-carbon monoxide ices. In combination with the infrared spectroscopically detected triplet dicarbon monoxide reactant, electronic structure calculations suggest that dicarbon monoxide reacts with silane via a de facto insertion of the terminal carbon atom into a silicon-hydrogen single bond. This is followed by non-adiabatic reaction dynamics triggered by the heavy silicon atom intersystem crossing from the triplet to the singlet manifold, eventually leading to the formation of silylketene. The non-equilibrium nature of the elementary reactions within the exposed ices results in an exciting and novel chemistry which cannot be explored via traditional preparative chemistry. Since the replacement of hydrogen in silane can introduce side groups such as silyl or alkyl, the reaction of triplet dicarbon monoxide with silane represents the parent system for a previously disregarded reaction class revealing an elegant path to access the largely reactive group of silylketenes.
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Affiliation(s)
- György Tarczay
- Department of Chemistry and W. M. Keck Research Laboratory in Astrochemistry, University of Hawaii at Manoa, Honolulu, Hawaii, 96822, USA.,Permanent Address: Laboratory of Molecular Spectroscopy, Institute of Chemistry, Eötvös University, PO Box 32, H-1518, Budapest 112, Hungary
| | - Marko Förstel
- Department of Chemistry and W. M. Keck Research Laboratory in Astrochemistry, University of Hawaii at Manoa, Honolulu, Hawaii, 96822, USA.,Present address: Berlin Institute of Technology, IOAP, Hardenbergstrasse 36, 10623, Berlin, Germany
| | - Sándor Góbi
- Department of Chemistry and W. M. Keck Research Laboratory in Astrochemistry, University of Hawaii at Manoa, Honolulu, Hawaii, 96822, USA
| | - Pavlo Maksyutenko
- Department of Chemistry and W. M. Keck Research Laboratory in Astrochemistry, University of Hawaii at Manoa, Honolulu, Hawaii, 96822, USA
| | - Ralf I Kaiser
- Department of Chemistry and W. M. Keck Research Laboratory in Astrochemistry, University of Hawaii at Manoa, Honolulu, Hawaii, 96822, USA
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10
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Zhao L, Yang T, Kaiser RI, Troy TP, Ahmed M, Belisario-Lara D, Ribeiro JM, Mebel AM. Combined Experimental and Computational Study on the Unimolecular Decomposition of JP-8 Jet Fuel Surrogates. I. n-Decane (n-C10H22). J Phys Chem A 2017; 121:1261-1280. [DOI: 10.1021/acs.jpca.6b11472] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Long Zhao
- Department of Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii 96822, United States
| | - Tao Yang
- Department of Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii 96822, United States
| | - Ralf I. Kaiser
- Department of Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii 96822, United States
| | - Tyler P. Troy
- Chemical Sciences
Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Musahid Ahmed
- Chemical Sciences
Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Daniel Belisario-Lara
- Department of Chemistry and
Biochemistry, Florida International University, Miami, Florida 33199, United States
| | - Joao Marcelo Ribeiro
- Department of Chemistry and
Biochemistry, Florida International University, Miami, Florida 33199, United States
| | - Alexander M. Mebel
- Department of Chemistry and
Biochemistry, Florida International University, Miami, Florida 33199, United States
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11
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Zhao L, Yang T, Kaiser RI, Troy TP, Ahmed M, Ribeiro JM, Belisario-Lara D, Mebel AM. Combined Experimental and Computational Study on the Unimolecular Decomposition of JP-8 Jet Fuel Surrogates. II: n-Dodecane (n-C12H26). J Phys Chem A 2017; 121:1281-1297. [DOI: 10.1021/acs.jpca.6b11817] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Long Zhao
- Department of Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii 96822, United States
| | - Tao Yang
- Department of Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii 96822, United States
| | - Ralf I. Kaiser
- Department of Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii 96822, United States
| | - Tyler P. Troy
- Chemical Sciences
Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Musahid Ahmed
- Chemical Sciences
Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Joao Marcelo Ribeiro
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
| | - Daniel Belisario-Lara
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
| | - Alexander M. Mebel
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
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12
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Zhao L, Yang T, Kaiser RI, Troy TP, Xu B, Ahmed M, Alarcon J, Belisario-Lara D, Mebel AM, Zhang Y, Cao C, Zou J. A vacuum ultraviolet photoionization study on high-temperature decomposition of JP-10 (exo-tetrahydrodicyclopentadiene). Phys Chem Chem Phys 2017; 19:15780-15807. [DOI: 10.1039/c7cp01571b] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
High-temperature pyrolysis of JP-10 in flow reactors were performed both experimentally and theoretically. Dozens of products were detected and the decomposition pathways of JP-10 were discussed.
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Affiliation(s)
- Long Zhao
- Department of Chemistry
- University of Hawaii at Manoa
- Honolulu
- USA
| | - Tao Yang
- Department of Chemistry
- University of Hawaii at Manoa
- Honolulu
- USA
| | - Ralf I. Kaiser
- Department of Chemistry
- University of Hawaii at Manoa
- Honolulu
- USA
| | - Tyler P. Troy
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
| | - Bo Xu
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
| | - Musahid Ahmed
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
| | - Juan Alarcon
- Department of Chemistry and Biochemistry
- Florida International University
- Miami
- USA
| | | | - Alexander M. Mebel
- Department of Chemistry and Biochemistry
- Florida International University
- Miami
- USA
| | - Yan Zhang
- National Synchrotron Radiation Laboratory
- University of Science and Technology of China
- Hefei
- P. R. China
| | - Chuangchuang Cao
- National Synchrotron Radiation Laboratory
- University of Science and Technology of China
- Hefei
- P. R. China
| | - Jiabiao Zou
- Key Laboratory for Power Machinery and Engineering of MOE
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
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13
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Chen J, Cao M, Wei B, Ding M, Shan X, Liu F, Sheng L. Vacuum ultraviolet photoionization mass spectrometric study of cyclohexene. JOURNAL OF MASS SPECTROMETRY : JMS 2016; 51:169-181. [PMID: 26889934 DOI: 10.1002/jms.3743] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Revised: 12/03/2015] [Accepted: 12/16/2015] [Indexed: 06/05/2023]
Abstract
In this work, photoionization and dissociation of cyclohexene have been studied by means of coupling a reflectron time-of-flight mass spectrometer with the tunable vacuum ultraviolet (VUV) synchrotron radiation. The adiabatic ionization energy of cyclohexene as well as the appearance energies of its fragment ions C6 H9 (+) , C6 H7 (+) , C5 H7 (+) , C5 H5 (+) , C4 H6 (+) , C4 H5 (+) , C3 H5 (+) and C3 H3 (+) were derived from the onset of the photoionization efficiency (PIE) curves. The optimized structures for the transition states and intermediates on the ground state potential energy surfaces related to photodissociation of cyclohexene were characterized at the ωB97X-D/6-31+g(d,p) level. The coupled cluster method, CCSD(T)/cc-pVTZ, was employed to calculate the corresponding energies with the zero-point energy corrections by the ωB97X-D/6-31+g(d,p) approach. Combining experimental and theoretical results, possible formation pathways of the fragment ions were proposed and discussed in detail. The retro-Cope rearrangement was found to play a crucial role in the formation of C4 H6 (+) , C4 H5 (+) and C3 H5 (+) . Intramolecular hydrogen migrations were observed as dominant processes in most of the fragmentation pathways of cyclohexene. The present research provides a clear picture of the photoionization and dissociation processes of cyclohexene in the 8- to 15.5-eV photon energy region.
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Affiliation(s)
- Jun Chen
- National Synchrotron Radiation Laboratory, School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, 230029, China
| | - Maoqi Cao
- Department of Chemistry, Qian Nan Normal College for Nationalities, Duyun, 558000, Guizhou, China
| | - Bin Wei
- National Synchrotron Radiation Laboratory, School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, 230029, China
| | - Mengmeng Ding
- National Synchrotron Radiation Laboratory, School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, 230029, China
| | - Xiaobin Shan
- National Synchrotron Radiation Laboratory, School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, 230029, China
| | - Fuyi Liu
- National Synchrotron Radiation Laboratory, School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, 230029, China
| | - Liusi Sheng
- National Synchrotron Radiation Laboratory, School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, 230029, China
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14
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Sánchez JP, Aguirre NF, Díaz-Tendero S, Martín F, Alcamí M. Structure, Ionization, and Fragmentation of Neutral and Positively Charged Hydrogenated Carbon Clusters: CnHmq+ (n = 1–5, m = 1–4, q = 0–3). J Phys Chem A 2016; 120:588-605. [DOI: 10.1021/acs.jpca.5b10143] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | - Fernando Martín
- Instituto
Madrileño de Estudios Avanzados en Nanociencias (IMDEA-Nanociencia), Cantoblanco, 28049 Madrid, Spain
| | - Manuel Alcamí
- Instituto
Madrileño de Estudios Avanzados en Nanociencias (IMDEA-Nanociencia), Cantoblanco, 28049 Madrid, Spain
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15
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Holzmeier F, Fischer I, Kiendl B, Krueger A, Bodi A, Hemberger P. On the absolute photoionization cross section and dissociative photoionization of cyclopropenylidene. Phys Chem Chem Phys 2016; 18:9240-7. [DOI: 10.1039/c6cp01068g] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the determination of the absolute photoionization cross section of cyclopropenylidene, c-C3H2, and the heat of formation of the C3H radical and ion derived by the dissociative ionization of the carbene.
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Affiliation(s)
- Fabian Holzmeier
- Institute of Physical and Theoretical Chemistry
- University of Würzburg
- D-97074 Würzburg
- Germany
| | - Ingo Fischer
- Institute of Physical and Theoretical Chemistry
- University of Würzburg
- D-97074 Würzburg
- Germany
| | - Benjamin Kiendl
- Institute of Organic Chemistry
- University of Würzburg
- D-97074 Würzburg
- Germany
| | - Anke Krueger
- Institute of Organic Chemistry
- University of Würzburg
- D-97074 Würzburg
- Germany
| | - Andras Bodi
- Paul Scherrer Institut
- CH-5232 Villigen PSI
- Switzerland
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16
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Mebel AM, Kaiser RI. Formation of resonantly stabilised free radicals via the reactions of atomic carbon, dicarbon, and tricarbon with unsaturated hydrocarbons: theory and crossed molecular beams experiments. INT REV PHYS CHEM 2015. [DOI: 10.1080/0144235x.2015.1075280] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Alexander M. Mebel
- Department of Chemistry and Biochemistry, Florida International University, Miami, FL 33199, USA
| | - Ralf I. Kaiser
- Department of Chemistry, University of Hawaii at Manoa, Honolulu, HI 96822, USA
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17
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Leone SR, Ahmed M, Wilson KR. Chemical dynamics, molecular energetics, and kinetics at the synchrotron. Phys Chem Chem Phys 2010; 12:6564-78. [PMID: 20419177 DOI: 10.1039/c001707h] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Scientists at the Chemical Dynamics Beamline of the Advanced Light Source in Berkeley are continuously reinventing synchrotron investigations of physical chemistry and chemical physics with vacuum ultraviolet light. One of the unique aspects of a synchrotron for chemical physics research is the widely tunable vacuum ultraviolet light that permits threshold ionization of large molecules with minimal fragmentation. This provides novel opportunities to assess molecular energetics and reaction mechanisms, even beyond simple gas phase molecules. In this perspective, significant new directions utilizing the capabilities at the Chemical Dynamics Beamline are presented, along with an outlook for future synchrotron and free electron laser science in chemical dynamics. Among the established and emerging fields of investigations are cluster and biological molecule spectroscopy and structure, combustion flame chemistry mechanisms, radical kinetics and product isomer dynamics, aerosol heterogeneous chemistry, planetary and interstellar chemistry, and secondary neutral ion-beam desorption imaging of biological matter and materials chemistry.
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Affiliation(s)
- Stephen R Leone
- Department of Chemistry, University of California, Berkeley, CA 94720, USA.
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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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Kostko O, Ahmed M, Metz RB. Vacuum-Ultraviolet Photoionization Measurement and ab Initio Calculation of the Ionization Energy of Gas-Phase SiO2. J Phys Chem A 2009; 113:1225-30. [PMID: 19170561 DOI: 10.1021/jp8091495] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Oleg Kostko
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720
| | - Musahid Ahmed
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720
| | - Ricardo B. Metz
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003
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Goulay F, Trevitt AJ, Meloni G, Selby TM, Osborn DL, Taatjes CA, Vereecken L, Leone SR. Cyclic Versus Linear Isomers Produced by Reaction of the Methylidyne Radical (CH) with Small Unsaturated Hydrocarbons. J Am Chem Soc 2009; 131:993-1005. [DOI: 10.1021/ja804200v] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fabien Goulay
- Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, Departments of Chemistry and Physics, University of California, Berkeley, California 94720, Combustion Research Facility, Mail Stop 9055, Sandia National Laboratories, Livermore, California 94551-0969, and Department of Chemistry, K. U. Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Adam J. Trevitt
- Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, Departments of Chemistry and Physics, University of California, Berkeley, California 94720, Combustion Research Facility, Mail Stop 9055, Sandia National Laboratories, Livermore, California 94551-0969, and Department of Chemistry, K. U. Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Giovanni Meloni
- Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, Departments of Chemistry and Physics, University of California, Berkeley, California 94720, Combustion Research Facility, Mail Stop 9055, Sandia National Laboratories, Livermore, California 94551-0969, and Department of Chemistry, K. U. Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Talitha M. Selby
- Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, Departments of Chemistry and Physics, University of California, Berkeley, California 94720, Combustion Research Facility, Mail Stop 9055, Sandia National Laboratories, Livermore, California 94551-0969, and Department of Chemistry, K. U. Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - David L. Osborn
- Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, Departments of Chemistry and Physics, University of California, Berkeley, California 94720, Combustion Research Facility, Mail Stop 9055, Sandia National Laboratories, Livermore, California 94551-0969, and Department of Chemistry, K. U. Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Craig A. Taatjes
- Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, Departments of Chemistry and Physics, University of California, Berkeley, California 94720, Combustion Research Facility, Mail Stop 9055, Sandia National Laboratories, Livermore, California 94551-0969, and Department of Chemistry, K. U. Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Luc Vereecken
- Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, Departments of Chemistry and Physics, University of California, Berkeley, California 94720, Combustion Research Facility, Mail Stop 9055, Sandia National Laboratories, Livermore, California 94551-0969, and Department of Chemistry, K. U. Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Stephen R. Leone
- Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, Departments of Chemistry and Physics, University of California, Berkeley, California 94720, Combustion Research Facility, Mail Stop 9055, Sandia National Laboratories, Livermore, California 94551-0969, and Department of Chemistry, K. U. Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
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Wang J, Struckmeier U, Yang B, Cool TA, Osswald P, Kohse-Höinghaus K, Kasper T, Hansen N, Westmoreland PR. Isomer-Specific Influences on the Composition of Reaction Intermediates in Dimethyl Ether/Propene and Ethanol/Propene Flame. J Phys Chem A 2008; 112:9255-65. [DOI: 10.1021/jp8011188] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Juan Wang
- School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, Department of Chemistry, Bielefeld University, Universitätsstrasse 25, D-33615 Bielefeld, Germany, Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, and Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003
| | - Ulf Struckmeier
- School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, Department of Chemistry, Bielefeld University, Universitätsstrasse 25, D-33615 Bielefeld, Germany, Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, and Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003
| | - Bin Yang
- School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, Department of Chemistry, Bielefeld University, Universitätsstrasse 25, D-33615 Bielefeld, Germany, Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, and Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003
| | - Terrill A. Cool
- School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, Department of Chemistry, Bielefeld University, Universitätsstrasse 25, D-33615 Bielefeld, Germany, Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, and Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003
| | - Patrick Osswald
- School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, Department of Chemistry, Bielefeld University, Universitätsstrasse 25, D-33615 Bielefeld, Germany, Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, and Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003
| | - Katharina Kohse-Höinghaus
- School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, Department of Chemistry, Bielefeld University, Universitätsstrasse 25, D-33615 Bielefeld, Germany, Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, and Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003
| | - Tina Kasper
- School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, Department of Chemistry, Bielefeld University, Universitätsstrasse 25, D-33615 Bielefeld, Germany, Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, and Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003
| | - Nils Hansen
- School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, Department of Chemistry, Bielefeld University, Universitätsstrasse 25, D-33615 Bielefeld, Germany, Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, and Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003
| | - Phillip R. Westmoreland
- School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, Department of Chemistry, Bielefeld University, Universitätsstrasse 25, D-33615 Bielefeld, Germany, Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, and Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003
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Gu X, Kaiser RI, Mebel AM. Chemistry of energetically activated cumulenes - from allene (H2CCCH2) to hexapentaene (H2CCCCCCH2). Chemphyschem 2008; 9:350-69. [PMID: 18275046 DOI: 10.1002/cphc.200700609] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
During the last decade, experimental and theoretical studies on the unimolecular decomposition of cumulenes (H(2)C(n)H(2)) from propadiene (H(2)CCCH(2)) to hexapentaene (H(2)CCCCCCH(2)) have received considerable attention due to the importance of these carbon-bearing molecules in combustion flames, chemical vapor deposition processes, atmospheric chemistry, and the chemistry of the interstellar medium. Cumulenes and their substituted counterparts also have significant technical potential as elements for molecular machines (nanomechanics), molecular wires (nano-electronics), nonlinear optics, and molecular sensors. In this review, we present a systematic overview of the stability, formation, and unimolecular decomposition of chemically, photo-chemically, and thermally activated small to medium-sized cumulenes in extreme environments. By concentrating on reactions under gas phase thermal conditions (pyrolysis) and on molecular beam experiments conducted under single-collision conditions (crossed beam and photodissociation studies), a comprehensive picture on the unimolecular decomposition dynamics of cumulenes transpires.
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Affiliation(s)
- Xibin Gu
- Department of Chemistry, University of Hawai'i at Manoa, Honolulu, HI 96822, USA
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Zhang F, Gu X, Kaiser RI, Bettinger H. A reinvestigation of the gas phase reaction of boron atoms, 11B(2Pj)/10B(2Pj) with acetylene, C2H2(X1Σg+). Chem Phys Lett 2008. [DOI: 10.1016/j.cplett.2007.10.067] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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