1
|
Molpeceres G, Kästner J, Fedoseev G, Qasim D, Schömig R, Linnartz H, Lamberts T. Carbon Atom Reactivity with Amorphous Solid Water: H 2O-Catalyzed Formation of H 2CO. J Phys Chem Lett 2021; 12:10854-10860. [PMID: 34727500 PMCID: PMC8591662 DOI: 10.1021/acs.jpclett.1c02760] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 10/29/2021] [Indexed: 06/01/2023]
Abstract
We report new computational and experimental evidence of an efficient and astrochemically relevant formation route to formaldehyde (H2CO). This simplest carbonylic compound is central to the formation of complex organics in cold interstellar clouds and is generally regarded to be formed by the hydrogenation of solid-state carbon monoxide. We demonstrate H2CO formation via the reaction of carbon atoms with amorphous solid water. Crucial to our proposed mechanism is a concerted proton transfer catalyzed by the water hydrogen bonding network. Consequently, the reactions 3C + H2O → 3HCOH and 1HCOH → 1H2CO can take place with low or without barriers, contrary to the high-barrier traditional internal hydrogen migration. These low barriers (or the absence thereof) explain the very small kinetic isotope effect in our experiments when comparing the formation of H2CO to D2CO. Our results reconcile the disagreement found in the literature on the reaction route C + H2O → H2CO.
Collapse
Affiliation(s)
- Germán Molpeceres
- Institute
for Theoretical Chemistry, University of
Stuttgart, 70569 Stuttgart, Germany
| | - Johannes Kästner
- Institute
for Theoretical Chemistry, University of
Stuttgart, 70569 Stuttgart, Germany
| | - Gleb Fedoseev
- Laboratory
for Astrophysics, Leiden Observatory, Leiden
University, PO Box 9513, 2300 RA Leiden, The Netherlands
- Research
Laboratory for Astrochemistry, Ural Federal
University, Kuibysheva St. 48, 620026 Ekaterinburg, Russia
| | - Danna Qasim
- Laboratory
for Astrophysics, Leiden Observatory, Leiden
University, PO Box 9513, 2300 RA Leiden, The Netherlands
| | - Richard Schömig
- Institute
for Theoretical Chemistry, University of
Stuttgart, 70569 Stuttgart, Germany
| | - Harold Linnartz
- Laboratory
for Astrophysics, Leiden Observatory, Leiden
University, PO Box 9513, 2300 RA Leiden, The Netherlands
| | - Thanja Lamberts
- Laboratory
for Astrophysics, Leiden Observatory, Leiden
University, PO Box 9513, 2300 RA Leiden, The Netherlands
- Leiden
Institute of Chemistry, Gorlaeus Laboratories, Leiden University, PO Box 9502, 2300 RA Leiden, The Netherlands
| |
Collapse
|
2
|
Bernhardt B, Ruth M, Eckhardt AK, Schreiner PR. Ethynylhydroxycarbene (H-C≡C-C̈-OH). J Am Chem Soc 2021; 143:3741-3746. [PMID: 33667077 DOI: 10.1021/jacs.1c00897] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The species on the C3H2O potential energy surface have long been known to play a vital role in extraterrestrial chemistry. Here we report on the hitherto uncharacterized isomer ethynylhydroxycarbene (H-C≡C-C̈-OH, 1) generated by high-vacuum flash pyrolysis of ethynylglyoxylic acid ethyl ester and trapped in solid argon matrices at 3 and 20 K. Upon irradiation at 436 nm trans-1 rearranges to its higher lying cis-conformer. Prolonged irradiation leads to the formation of propynal. When the matrix is kept in the dark, 1 reacts within a half-life of ca. 70 h to propynal in a conformer-specific [1,2]H-tunneling process. Our results are fully consistent with computations at the CCSD(T)/cc-pVTZ and the B3LYP/def2-QZVPP levels of theory.
Collapse
Affiliation(s)
- Bastian Bernhardt
- Institute of Organic Chemistry, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Marcel Ruth
- Institute of Organic Chemistry, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - André K Eckhardt
- Institute of Organic Chemistry, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Peter R Schreiner
- Institute of Organic Chemistry, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| |
Collapse
|
3
|
Keshavarz F. Chemical Kinetics Approves the Occurrence of C ( 3P j) Reaction with H 2O. J Phys Chem A 2019; 123:5877-5892. [PMID: 31268710 DOI: 10.1021/acs.jpca.9b03492] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Although both atomic carbon and water are omnipresent in human life, there is a debate about the possibility of carbon reaction with water. Some low-temperature spectroscopic investigations have rejected the reaction, whereas some room-temperature experiments and theoretical studies have accepted the possibility of the reaction by reporting rate coefficients ranging from 105 to 109 L mol-1 s-1. This study provides new lines of evidence about the reaction through exploration of the reaction mechanism using the CCSD(T) method and solving the corresponding master equation by following two main approaches. According to the results, the rate coefficient of the reaction is significantly influenced by the tunneling and hindered rotation effects, in addition to the selected total angular momentum (J). Furthermore, the total rate coefficient of the reaction increases dramatically (from 107 to 1011 L mol-1 s-1) with the rise of temperature from 100 to 4000 K, while the total rate coefficient is insensitive to pressure (0.1-10 atm). Despite some differences between the results of the two approaches, the rate coefficients of both methods are consistent with the previously reported rate coefficients. Also, in agreement with the previous studies, the major products are 2HOC + 2H and 2HCO + 2H. In general, the findings approve the occurrence of the title reaction and indicate that the mentioned conflict is due to the sensitivity of the reaction to the investigated temperature and J level. The sensitivity does not permit low-temperature spectroscopic studies to detect any products and varies the measured and calculated rate coefficients.
Collapse
Affiliation(s)
- Fatemeh Keshavarz
- Department of Chemistry, College of Science , Shiraz University , Shiraz 71946-84795 , Iran
| |
Collapse
|
4
|
Hickson KM. Low-Temperature Rate Constants and Product-Branching Ratios for the C( 1D) + H 2O Reaction. J Phys Chem A 2019; 123:5206-5213. [PMID: 31198039 DOI: 10.1021/acs.jpca.9b03037] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The gas-phase reaction between atomic carbon in its first electronically excited 1D state and water has been studied over the 50-296 K temperature range using a supersonic flow apparatus. C(1D) atoms were produced by pulsed ultraviolet multiphoton dissociation of carbon tetrabromide; a process that also generates ground-state atomic carbon C(3P). The reaction was followed by detecting product H-atoms by pulsed vacuum ultraviolet laser-induced fluorescence. Two types of experiment were performed. First, temperature-dependent rate constants were derived by recording H-atom formation curves at various gas-phase water concentrations at each temperature. Secondly, temperature-dependent H-atom yields were extracted by comparing the H-atom fluorescence intensities generated by the target C(1D) + H2O reaction with those of a reference reaction. The second-order rate constants are large and increase to low temperature, whereas the measured H-atom yields are close to the theoretical maximum value of 2 above 100 K. At 50 K, neither rate constants nor H-atom yields could be derived because of H-atom formation by quantum tunneling in the activated C(3P) + H2O reaction. The present results are discussed in the context of earlier work on the C(1D)/C(3P) + H2O reactions.
Collapse
Affiliation(s)
- Kevin M Hickson
- Université de Bordeaux, Institut des Sciences Moléculaires , F-33400 Talence , France.,CNRS, Institut des Sciences Moléculaires , F-33400 Talence , France
| |
Collapse
|
5
|
Gas-phase sugar formation using hydroxymethylene as the reactive formaldehyde isomer. Nat Chem 2018; 10:1141-1147. [DOI: 10.1038/s41557-018-0128-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Accepted: 07/26/2018] [Indexed: 11/08/2022]
|
6
|
Abu-Saleh AAAA, Almatarneh MH, Poirier RA. Bimolecular reactions of carbenes: Proton transfer mechanism. Chem Phys Lett 2018. [DOI: 10.1016/j.cplett.2018.03.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|
7
|
Eckhardt AK, Schreiner PR. Spectroscopic Evidence for Aminomethylene (H−C̈−NH2
)-The Simplest Amino Carbene. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800679] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- André K. Eckhardt
- Institute of Organic Chemistry; Justus-Liebig University Giessen; Heinrich-Buff-Ring 17 35392 Giessen Germany
| | - Peter R. Schreiner
- Institute of Organic Chemistry; Justus-Liebig University Giessen; Heinrich-Buff-Ring 17 35392 Giessen Germany
| |
Collapse
|
8
|
Eckhardt AK, Schreiner PR. Spectroscopic Evidence for Aminomethylene (H−C̈−NH2
)-The Simplest Amino Carbene. Angew Chem Int Ed Engl 2018; 57:5248-5252. [DOI: 10.1002/anie.201800679] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Indexed: 11/06/2022]
Affiliation(s)
- André K. Eckhardt
- Institute of Organic Chemistry; Justus-Liebig University Giessen; Heinrich-Buff-Ring 17 35392 Giessen Germany
| | - Peter R. Schreiner
- Institute of Organic Chemistry; Justus-Liebig University Giessen; Heinrich-Buff-Ring 17 35392 Giessen Germany
| |
Collapse
|
9
|
|
10
|
Li J, Xie C, Guo H. Kinetics and dynamics of the C(3P) + H2O reaction on a full-dimensional accurate triplet state potential energy surface. Phys Chem Chem Phys 2017; 19:23280-23288. [PMID: 28825759 DOI: 10.1039/c7cp04578f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A full-dimensional accurate PES for the C(3P) + H2O reaction is developed using the PIP-NN method.
Collapse
Affiliation(s)
- Jun Li
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 401331
- China
| | - Changjian Xie
- Department of Chemistry and Chemical Biology
- University of New Mexico
- Albuquerque
- USA
| | - Hua Guo
- Department of Chemistry and Chemical Biology
- University of New Mexico
- Albuquerque
- USA
| |
Collapse
|
11
|
Hickson KM, Loison JC, Nuñez-Reyes D, Méreau R. Quantum Tunneling Enhancement of the C + H2O and C + D2O Reactions at Low Temperature. J Phys Chem Lett 2016; 7:3641-3646. [PMID: 27574866 DOI: 10.1021/acs.jpclett.6b01637] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Recent studies of neutral gas-phase reactions characterized by barriers show that certain complex forming processes involving light atoms are enhanced by quantum mechanical tunneling at low temperature. Here, we performed kinetic experiments on the activated C((3)P) + H2O reaction, observing a surprising reactivity increase below 100 K, an effect that is only partially reproduced when water is replaced by its deuterated analogue. Product measurements of H- and D-atom formation allowed us to quantify the contribution of complex stabilization to the total rate while confirming the lower tunneling efficiency of deuterium. This result, which is validated through statistical calculations of the intermediate complexes and transition states has important consequences for simulated interstellar water abundances and suggests that tunneling mechanisms could be ubiquitous in cold dense clouds.
Collapse
Affiliation(s)
- Kevin M Hickson
- University Bordeaux, ISM, CNRS UMR 5255, F-33400 Talence, France
| | | | | | - Raphaël Méreau
- University Bordeaux, ISM, CNRS UMR 5255, F-33400 Talence, France
| |
Collapse
|
12
|
McBride EJ, Millar TJ, Kohanoff JJ. Irradiation of water ice by C(+) ions in the cosmic environment. J Phys Chem A 2014; 118:6991-8. [PMID: 25090372 DOI: 10.1021/jp502738x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We present a first-principles MD (FPMD) study of the interaction of low-energy, positively charged carbon (C(+)) projectiles with amorphous solid water clusters at 30 K. Reactions involving the carbon ion at an initial energy of 11 and 1.7 eV with a 30-molecule cluster have been investigated. Simulations indicate that the neutral isoformyl radical, COH(•), and carbon monoxide, CO, are the dominant products of these reactions. All of these reactions are accompanied by the transfer of a proton from the reacting water molecule to the ice, where it forms a hydronium ion. We find that COH(•) is formed either via a direct, “knock-out”, mechanism following the impact of the C(+) projectile upon a water molecule or by creation of a COH2(+) intermediate. The direct mechanism is more prominent at higher energies. CO is generally produced following the dissociation of COH(•). More frequent production of the formyl radical, HCO(•), is observed here than in gas-phase calculations. A less commonly occurring product is the dihydroxymethyl, CH(OH)2(•), radical. Although a minor result, its existence gives an indication of the increasing chemical complexity that is possible in such heterogeneous environments.
Collapse
Affiliation(s)
- E J McBride
- Atomistic Simulation Centre, ¶Astrophysics Research Centre, and †School of Mathematics and Physics, Queen's University Belfast , Belfast BT7 1NN, Northern Ireland, United Kingdom
| | | | | |
Collapse
|
13
|
Rodrigo CP, Sutradhar S, Reisler H. Imaging Studies of Excited and Dissociative States of Hydroxymethylene Produced in the Photodissociation of the Hydroxymethyl Radical. J Phys Chem A 2014; 118:11916-25. [DOI: 10.1021/jp505108k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Chirantha P. Rodrigo
- Department
of Chemistry, University of Southern California, Los Angeles, California 90089-0482, United States
| | - Subhasish Sutradhar
- Department
of Chemistry, University of Southern California, Los Angeles, California 90089-0482, United States
| | - Hanna Reisler
- Department
of Chemistry, University of Southern California, Los Angeles, California 90089-0482, United States
| |
Collapse
|
14
|
McKee ML, Reisenauer HP, Schreiner PR. Combined ab Initio Molecular Dynamics and Experimental Studies of Carbon Atom Addition to Benzene. J Phys Chem A 2014; 118:2801-9. [DOI: 10.1021/jp501107b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Hans Peter Reisenauer
- Institute
of Organic Chemistry, Justus-Liebig University, Heinrich-Buff-Ring 58, 35392 Giessen, Germany
| | - Peter R. Schreiner
- Institute
of Organic Chemistry, Justus-Liebig University, Heinrich-Buff-Ring 58, 35392 Giessen, Germany
| |
Collapse
|
15
|
Shannon RJ, Cossou C, Loison JC, Caubet P, Balucani N, Seakins PW, Wakelam V, Hickson KM. The fast C(3P) + CH3OH reaction as an efficient loss process for gas-phase interstellar methanol. RSC Adv 2014. [DOI: 10.1039/c4ra03036b] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The reaction between ground state atomic carbon and methanol is shown to be an efficient destruction mechanism for interstellar methanol.
Collapse
Affiliation(s)
| | - Christophe Cossou
- Université de Bordeaux
- Laboratoire d'Astrophysique de Bordeaux
- UMR 5804
- F-33270 Floirac, France
- CNRS
| | - Jean-Christophe Loison
- Université de Bordeaux
- Institut des Sciences Moléculaires
- UMR 5255
- F-33400 Talence, France
- CNRS
| | - Philippe Caubet
- Université de Bordeaux
- Institut des Sciences Moléculaires
- UMR 5255
- F-33400 Talence, France
- CNRS
| | - Nadia Balucani
- Dipartimento di Chimica
- Biologia e Biotecnologie
- Universita' degli Studi di Perugia
- 06123 Perugia, Italy
| | - Paul W. Seakins
- School of Chemistry
- University of Leeds
- Leeds, UK
- National Centre for Atmospheric Science
- University of Leeds
| | - Valentine Wakelam
- Université de Bordeaux
- Laboratoire d'Astrophysique de Bordeaux
- UMR 5804
- F-33270 Floirac, France
- CNRS
| | - Kevin M. Hickson
- Université de Bordeaux
- Institut des Sciences Moléculaires
- UMR 5255
- F-33400 Talence, France
- CNRS
| |
Collapse
|
16
|
McBride EJ, Millar TJ, Kohanoff JJ. Organic synthesis in the interstellar medium by low-energy carbon irradiation. J Phys Chem A 2013; 117:9666-72. [PMID: 23662836 DOI: 10.1021/jp312342v] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We present a first principles molecular dynamics (FPMD) study of the interaction of low-energy neutral carbon projectiles with amorphous solid water clusters at 30 K. Reactions involving the carbon atom at an initial energy of 11 and 1.7 eV with 30-molecule clusters have been investigated. Simulations indicate that the formation of hydroxymethylene, an intermediate in formaldehyde production, dominates at the higher energy. The reaction proceeds by fragmenting a water molecule, binding the carbon to the OH radical, and saturating the C valence with a hydrogen atom that can arise from the originally dissociated water molecule, or through a chain of proton transfer events. We identified several possible pathways for the formation of HCOH. When the initial collision occurs at the periphery of the cluster, we observe the formation of CO and the evaporation of water molecules. At the lower energy water fragmentation is not favorable, thus leading to the formation of weakly bound carbon-water complexes.
Collapse
Affiliation(s)
- E J McBride
- Atomistic Simulation Centre and ‡Astrophysics Research Centre, Queen's University Belfast , Belfast BT7 1NN, Northern Ireland, U.K
| | | | | |
Collapse
|
17
|
Gerbig D, Ley D. Computational methods for contemporary carbene chemistry. WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE 2012. [DOI: 10.1002/wcms.1124] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
|
18
|
Dede Y, Ozkan I. Intermolecular acetaldehyde and dimethoxymethane formation mechanisms via ethenol and methoxymethylene precursors in reactions of atomic carbon with methanol: a computational study. Phys Chem Chem Phys 2012; 14:2326-32. [DOI: 10.1039/c2cp23127a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
19
|
Wang T, Bowie JH. Hydrogen tunnelling influences the isomerisation of some small radicals of interstellar importance. A theoretical investigation. Org Biomol Chem 2012; 10:3219-28. [DOI: 10.1039/c2ob07102a] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
20
|
Peters PS, Duflot D, Faure A, Kahane C, Ceccarelli C, Wiesenfeld L, Toubin C. Theoretical Investigation of the Isomerization of trans-HCOH to H2CO: An Example of a Water-Catalyzed Reaction. J Phys Chem A 2011; 115:8983-9. [DOI: 10.1021/jp202052h] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Phillip S. Peters
- Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM), UMR CNRS 8523, Université Lille 1, Villeneuve d’Ascq Cedex 59655, France
- Université Joseph Fourier-Grenoble 1/CNRS-INSU, Institut de Planétologie et d’Astrophysique de Grenoble (IPAG) UMR 5274, Grenoble F-38041, France
| | - Denis Duflot
- Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM), UMR CNRS 8523, Université Lille 1, Villeneuve d’Ascq Cedex 59655, France
| | - Alexandre Faure
- Université Joseph Fourier-Grenoble 1/CNRS-INSU, Institut de Planétologie et d’Astrophysique de Grenoble (IPAG) UMR 5274, Grenoble F-38041, France
| | - Claudine Kahane
- Université Joseph Fourier-Grenoble 1/CNRS-INSU, Institut de Planétologie et d’Astrophysique de Grenoble (IPAG) UMR 5274, Grenoble F-38041, France
| | - Cecilia Ceccarelli
- Université Joseph Fourier-Grenoble 1/CNRS-INSU, Institut de Planétologie et d’Astrophysique de Grenoble (IPAG) UMR 5274, Grenoble F-38041, France
| | - Laurent Wiesenfeld
- Université Joseph Fourier-Grenoble 1/CNRS-INSU, Institut de Planétologie et d’Astrophysique de Grenoble (IPAG) UMR 5274, Grenoble F-38041, France
| | - Céline Toubin
- Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM), UMR CNRS 8523, Université Lille 1, Villeneuve d’Ascq Cedex 59655, France
| |
Collapse
|
21
|
Sarka J, Császár AG, Schreiner PR. Do the mercaptocarbene (H–C–S–H) and selenocarbene (H–C–Se–H) congeners of hydroxycarbene (H–C–O–H) undergo 1,2-H-tunneling? ACTA ACUST UNITED AC 2011. [DOI: 10.1135/cccc2011053] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The principal purpose of this investigation is the determination of the tunneling half-lives of the trans-HCSH → H2CS and the trans-HCSeH → H2CSe unimolecular isomerization reactions at temperatures close to 0 K. To aid these determinations, accurate electronic structure computations were performed, with electron correlation treatments as extensive as CCSDT(Q) and basis sets as large as aug-cc-pCV5Z, for the isomers of [H,H,C,S] and [H,H,C,Se] on their lowest singlet surfaces and for the appropriate transition states yielding structural data for key stationary points characterizing the isomerization reactions. The computational results were subjected to a focal-point analysis (FPA) that yields accurate relative energies with uncertainty estimates. The tunneling half-lives were determined by a simple Eckart-barrier approach and via the more sophisticated though still one-dimensional Wentzel–Kramers–Brillouin (WKB) approximation. Only stationary-point information is needed for the former while an intrinsic reaction path (IRP) is necessary for the latter approach. Both protocols suggest that, unlike for the parent hydroxymethylene (HCOH), at the low temperatures of matrix isolation experiments no tunneling will be observable for the trans-HCSH and trans-HCSeH systems.
Collapse
|
22
|
Gronert S, Keeffe JR, More O’Ferrall RA. Stabilities of Carbenes: Independent Measures for Singlets and Triplets. J Am Chem Soc 2011; 133:3381-9. [DOI: 10.1021/ja1071493] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Scott Gronert
- Department of Chemistry, Virginia Commonwealth University, 1001 W. Main Street, Richmond, Virginia 23284, United States
| | - James R. Keeffe
- Department of Chemistry and Biochemistry, San Francisco State University, 1600 Holloway Avenue, San Francisco, California 94132, United States
| | - Rory A. More O’Ferrall
- School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| |
Collapse
|
23
|
Wang T, Bowie JH. Radical routes to interstellar glycolaldehyde. The possibility of stereoselectivity in gas-phase polymerization reactions involving CH2O and ˙CH2OH. Org Biomol Chem 2010; 8:4757-66. [DOI: 10.1039/c0ob00125b] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
24
|
Koziol L, Mozhayskiy VA, Braams BJ, Bowman JM, Krylov AI. Ab Initio Calculation of the Photoelectron Spectra of the Hydroxycarbene Diradicals. J Phys Chem A 2009; 113:7802-9. [DOI: 10.1021/jp903476w] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lucas Koziol
- Department of Chemistry, University of Southern California, Los Angeles, California 90089-0482, C. L. Emerson Center for Scientific Computation, Department of Chemistry, Emory University, Atlanta, Georgia 30322
| | - Vadim A. Mozhayskiy
- Department of Chemistry, University of Southern California, Los Angeles, California 90089-0482, C. L. Emerson Center for Scientific Computation, Department of Chemistry, Emory University, Atlanta, Georgia 30322
| | - Bastiaan J. Braams
- Department of Chemistry, University of Southern California, Los Angeles, California 90089-0482, C. L. Emerson Center for Scientific Computation, Department of Chemistry, Emory University, Atlanta, Georgia 30322
| | - Joel M. Bowman
- Department of Chemistry, University of Southern California, Los Angeles, California 90089-0482, C. L. Emerson Center for Scientific Computation, Department of Chemistry, Emory University, Atlanta, Georgia 30322
| | - Anna I. Krylov
- Department of Chemistry, University of Southern California, Los Angeles, California 90089-0482, C. L. Emerson Center for Scientific Computation, Department of Chemistry, Emory University, Atlanta, Georgia 30322
| |
Collapse
|
25
|
Schreiner PR, Reisenauer HP, Pickard IV FC, Simmonett AC, Allen WD, Mátyus E, Császár AG. Capture of hydroxymethylene and its fast disappearance through tunnelling. Nature 2008; 453:906-9. [DOI: 10.1038/nature07010] [Citation(s) in RCA: 236] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2007] [Accepted: 04/16/2008] [Indexed: 11/09/2022]
|
26
|
Koziol L, Wang Y, Braams BJ, Bowman JM, Krylov AI. The theoretical prediction of infrared spectra of trans- and cis-hydroxycarbene calculated using full dimensional ab initio potential energy and dipole moment surfaces. J Chem Phys 2008; 128:204310. [DOI: 10.1063/1.2925452] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
27
|
Langer P, Amiri S, Bodtke A, Saleh NNR, Weisz K, Görls H, Schreiner PR. 3,5,7,9-Substituted Hexaazaacridines: Toward Structures with Nearly Degenerate Singlet−Triplet Energy Separations. J Org Chem 2008; 73:5048-63. [DOI: 10.1021/jo8005123] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Peter Langer
- Institut für Chemie, Universität Rostock, Albert-Einstein-Str. 3a, D-18059 Rostock, Germany, Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Str. 29a, D-18059 Rostock, Germany, Institut für Organische Chemie, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 58, D-35392 Giessen, Germany, Institut für Pharmazie, Universität Greifswald, Friedrich-Ludwig-Jahn-Str. 17, D-17487 Greifswald, Germany, Institut für Biochemie, Universität Greifswald, Felix-Hausdorff-Str. 18, D
| | - Shadi Amiri
- Institut für Chemie, Universität Rostock, Albert-Einstein-Str. 3a, D-18059 Rostock, Germany, Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Str. 29a, D-18059 Rostock, Germany, Institut für Organische Chemie, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 58, D-35392 Giessen, Germany, Institut für Pharmazie, Universität Greifswald, Friedrich-Ludwig-Jahn-Str. 17, D-17487 Greifswald, Germany, Institut für Biochemie, Universität Greifswald, Felix-Hausdorff-Str. 18, D
| | - Anja Bodtke
- Institut für Chemie, Universität Rostock, Albert-Einstein-Str. 3a, D-18059 Rostock, Germany, Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Str. 29a, D-18059 Rostock, Germany, Institut für Organische Chemie, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 58, D-35392 Giessen, Germany, Institut für Pharmazie, Universität Greifswald, Friedrich-Ludwig-Jahn-Str. 17, D-17487 Greifswald, Germany, Institut für Biochemie, Universität Greifswald, Felix-Hausdorff-Str. 18, D
| | - Nehad N. R. Saleh
- Institut für Chemie, Universität Rostock, Albert-Einstein-Str. 3a, D-18059 Rostock, Germany, Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Str. 29a, D-18059 Rostock, Germany, Institut für Organische Chemie, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 58, D-35392 Giessen, Germany, Institut für Pharmazie, Universität Greifswald, Friedrich-Ludwig-Jahn-Str. 17, D-17487 Greifswald, Germany, Institut für Biochemie, Universität Greifswald, Felix-Hausdorff-Str. 18, D
| | - Klaus Weisz
- Institut für Chemie, Universität Rostock, Albert-Einstein-Str. 3a, D-18059 Rostock, Germany, Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Str. 29a, D-18059 Rostock, Germany, Institut für Organische Chemie, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 58, D-35392 Giessen, Germany, Institut für Pharmazie, Universität Greifswald, Friedrich-Ludwig-Jahn-Str. 17, D-17487 Greifswald, Germany, Institut für Biochemie, Universität Greifswald, Felix-Hausdorff-Str. 18, D
| | - Helmar Görls
- Institut für Chemie, Universität Rostock, Albert-Einstein-Str. 3a, D-18059 Rostock, Germany, Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Str. 29a, D-18059 Rostock, Germany, Institut für Organische Chemie, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 58, D-35392 Giessen, Germany, Institut für Pharmazie, Universität Greifswald, Friedrich-Ludwig-Jahn-Str. 17, D-17487 Greifswald, Germany, Institut für Biochemie, Universität Greifswald, Felix-Hausdorff-Str. 18, D
| | - Peter R. Schreiner
- Institut für Chemie, Universität Rostock, Albert-Einstein-Str. 3a, D-18059 Rostock, Germany, Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Str. 29a, D-18059 Rostock, Germany, Institut für Organische Chemie, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 58, D-35392 Giessen, Germany, Institut für Pharmazie, Universität Greifswald, Friedrich-Ludwig-Jahn-Str. 17, D-17487 Greifswald, Germany, Institut für Biochemie, Universität Greifswald, Felix-Hausdorff-Str. 18, D
| |
Collapse
|
28
|
Abstract
To probe whether tetrahedrane should be isolable the thermodynamics and kinetics of C4H4 singlet and triplet structures were studied extensively at the CCSD(T)/cc-pVTZ//CCSD(T)/cc-pVDZ, CCSD(T)/cc-pVDZ, CCSD(T)/cc-pVDZ//B3 LYP/6-311G**, and B3 LYP/6-311G** levels of theory. The reaction of cyclopropene with atomic carbon, which was previously suggested to involve tetrahedrane as a reactive intermediate, was re-examined experimentally with low-temperature matrix-isolation techniques. While experimental and theoretical results exclude the intermediacy of tetrahedrane in the above reaction, it is predicted to be an isolable molecule. Among the many C4H4 species, we pay special attention to the electronic effects on the ground state multiplicity of the respective carbenes.
Collapse
Affiliation(s)
- Adelina Nemirowski
- Institut für Organische Chemie, Justus-Liebig-Universität, Heinrich-Buff-Ring 58, 35392 Giessen, Germany
| | | | | |
Collapse
|