1
|
Zhao S, Yan S, Liu X, Yang L, Sun S, Zhang J. Effect of water on dynamics of HOCO radical. Chem Phys 2021. [DOI: 10.1016/j.chemphys.2021.111173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
2
|
McCarthy MC, Martinez O, McGuire BA, Crabtree KN, Martin-Drumel MA, Stanton JF. Isotopic studies of trans- and cis-HOCO using rotational spectroscopy: Formation, chemical bonding, and molecular structures. J Chem Phys 2016; 144:124304. [DOI: 10.1063/1.4944070] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Affiliation(s)
- Michael C. McCarthy
- Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138, USA and School of Engineering and Applied Sciences, Harvard University, 29 Oxford Street, Cambridge, Massachusetts 02138, USA
| | - Oscar Martinez
- Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138, USA and School of Engineering and Applied Sciences, Harvard University, 29 Oxford Street, Cambridge, Massachusetts 02138, USA
| | - Brett A. McGuire
- Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138, USA and School of Engineering and Applied Sciences, Harvard University, 29 Oxford Street, Cambridge, Massachusetts 02138, USA
- National Radio Astronomy Observatory, Charlottesville, Virginia 22901, USA
| | - Kyle N. Crabtree
- Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138, USA and School of Engineering and Applied Sciences, Harvard University, 29 Oxford Street, Cambridge, Massachusetts 02138, USA
| | - Marie-Aline Martin-Drumel
- Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138, USA and School of Engineering and Applied Sciences, Harvard University, 29 Oxford Street, Cambridge, Massachusetts 02138, USA
| | - John F. Stanton
- Department of Chemistry and Biochemistry, The University of Texas at Austin, 1 University Station A5300, Austin, Texas 78712-0165, USA
| |
Collapse
|
3
|
Linguerri R, Puzzarini C, Francisco JS. Structure and spectroscopic properties of low-lying states of the HOC(O)O radical. J Chem Phys 2016; 144:084306. [PMID: 26931701 DOI: 10.1063/1.4942196] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The HOC(O)O radical is a product of the reaction of HOCO radicals with oxygen atoms. The present study provides theoretical prediction of critical spectroscopic features of this radical that should aid in its experimental characterization. Energies, structures, rotational constants, and harmonic frequencies are presented for the ground and two low-lying excited electronic states of HOC(O)O. The energies for the Ã(2)A″←X̃(2)A' and B̃(2)A'←X̃(2)A' electronic transitions are reported. The band origin of the B̃←X̃ transition of HOC(O)O is predicted to occur in the near infrared region of the spectrum at around 1.5 eV and it is suggested to be the most promising one for observing this radical spectroscopically. The structural and spectroscopic similarities between HOC(O)O and the isoelectronic radical FC(O)O are discussed. The abundance of experimental data on the FC(O)O radical should guide the spectroscopic characterization of HOC(O)O and serve as a benchmark for the structural and spectroscopic parameters obtained from theory.
Collapse
Affiliation(s)
- Roberto Linguerri
- Laboratorie Modélisation et Simulation Multi Echelle, Université Paris-Est, MSME UMR 8208 CNRS, 5 Blvd. Descartes, 77454 Marne La Vallée France
| | - Cristina Puzzarini
- Dipartimento di Chimica "Giacomo Ciamician," Università degli Studi di Bologna, Via Selmi 2, I-40126 Bologna, Italy
| | - Joseph S Francisco
- Department of Chemistry and Department of Earth, Atmospheric, and Planetary Sciences, Purdue University, West Lafayette, Indiana 47907-2084, USA
| |
Collapse
|
4
|
Rypkema HA, Francisco JS. Atmospheric Oxidation of Peroxyacetic Acid. J Phys Chem A 2013; 117:14151-62. [DOI: 10.1021/jp409773j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Heather A. Rypkema
- Department of Chemistry and Department of Earth, Atmospheric, and Planetary
Sciences, Purdue University, West Lafayette, Indiana 47907, United States
| | - Joseph S. Francisco
- Department of Chemistry and Department of Earth, Atmospheric, and Planetary
Sciences, Purdue University, West Lafayette, Indiana 47907, United States
| |
Collapse
|
5
|
Oyama T, Nakajima M, Sumiyoshi Y, Endo Y. Pure rotational spectroscopy of the H2O−trans-HOCO complex. J Chem Phys 2013; 138:204318. [DOI: 10.1063/1.4807749] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
|
6
|
Oyama T, Sumiyoshi Y, Endo Y. Pure rotational spectra of the CO-trans-HOCO complex. J Chem Phys 2013; 137:154307. [PMID: 23083165 DOI: 10.1063/1.4758528] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Pure rotational spectra of the CO-trans-HOCO complex have been observed by Fourier transform microwave (FTMW) and millimeter-wave FTMW double resonance spectroscopy. The complex was produced in a supersonic jet by discharging a mixture gas of CO and H(2)O diluted in Ar. The molecular constants including the fine and hyperfine coupling constants have been precisely determined. The inter-molecular distance between the CO and trans-HOCO monomers has been determined by fixing the structures of the trans-HOCO and CO monomers, where this complex has the OC···HO configuration with the C···HO angle almost linear. The C···H distance, 2.166 Å, is much shorter than those of the closed shell complexes, CO-CH(3)OH and CO-H(2)O. The Fermi contact constant of the proton for the complex was compared with that of the trans-HOCO monomer, leading to a conclusion that there is almost no induced effect for the spin density on the proton of HOCO by the complex formation.
Collapse
Affiliation(s)
- Takahiro Oyama
- Department of Basic Science, Graduate School of Art and Sciences, The University of Tokyo, Komaba, Meguro-ku, Tokyo 153-8902, Japan
| | | | | |
Collapse
|
7
|
Vereecken L, Francisco JS. Theoretical studies of atmospheric reaction mechanisms in the troposphere. Chem Soc Rev 2012; 41:6259-93. [DOI: 10.1039/c2cs35070j] [Citation(s) in RCA: 311] [Impact Index Per Article: 25.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
8
|
Fortenberry RC, Huang X, Francisco JS, Crawford TD, Lee TJ. The trans-HOCO radical: Quartic force fields, vibrational frequencies, and spectroscopic constants. J Chem Phys 2011; 135:134301. [DOI: 10.1063/1.3643336] [Citation(s) in RCA: 102] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
9
|
Oyama T, Funato W, Sumiyoshi Y, Endo Y. Observation of the pure rotational spectra of trans- and cis-HOCO. J Chem Phys 2011; 134:174303. [DOI: 10.1063/1.3578179] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
10
|
Abstract
Free radicals are important species in atmospheric chemistry, combustion, plasma environments, interstellar clouds, and biochemistry. Therefore, researchers would like to understand the formation mechanism, structure, stability, reactivity, spectroscopy, and dynamics of these chemical species. However, due to the presence of one or more unpaired electrons, radicals are often very reactive and have short lifetimes, which makes it difficult to conduct experiments. The HOCO radical appears in the atmosphere as well as in combustion environments and plays an important role in the conversion of CO to CO(2). Through the interplay between theoretical and experimental investigations, researchers have only recently understood the chemical role of the HOCO radical. In this Account, we systematically describe the current state of knowledge of the HOCO radical based on recent theoretical and experimental studies. This radical's two stable conformers, trans- and cis-HOCO, have been identified by high-level ab initio calculations and experimental spectroscopy. trans-HOCO is more stable by approximately 1.8 kcal/mol. The heat of formation of HOCO (298 K) was determined to be -43.0 ± 0.5 kcal/mol, giving a potential well depth of 30.1 ± 0.5 kcal/mol relative to the asymptote of the reactants OH + CO. The HOCO radical is very reactive. In most reactions between the HOCO radical and atoms, the HOCO radical acts as a hydrogen donor to reaction partners. Generally, the hydrogen is transferred through the formation of an association intermediate, which then proceeds through a molecular elimination step to produce the reaction products. The reaction rates of HOCO with some small radicals fall in the range of 10(-11)-10(-10) cm(3) molecule(-1) s(-1). These results clearly illustrate important features in the reactivity of the HOCO radical with other molecules.
Collapse
Affiliation(s)
- Joseph S. Francisco
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - James T. Muckerman
- Department of Chemistry, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Hua-Gen Yu
- Department of Chemistry, Brookhaven National Laboratory, Upton, New York 11973, United States
| |
Collapse
|
11
|
Yu HG, Francisco JS. Ab Initio and RRKM Study of the Reaction of ClO with HOCO Radicals. J Phys Chem A 2009; 113:12932-41. [DOI: 10.1021/jp9040088] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hua-Gen Yu
- Department of Chemistry, Brookhaven National Laboratory, Upton, New York 11973 and Department of Chemistry, Purdue University, West Lafayette, Indiana 47907
| | - Joseph S. Francisco
- Department of Chemistry, Brookhaven National Laboratory, Upton, New York 11973 and Department of Chemistry, Purdue University, West Lafayette, Indiana 47907
| |
Collapse
|
12
|
Yu HG, Poggi G, Francisco JS, Muckerman JT. Energetics and molecular dynamics of the reaction of HOCO with HO2 radicals. J Chem Phys 2008; 129:214307. [DOI: 10.1063/1.3028052] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
13
|
Yu HG, Francisco JS, Muckerman JT. Ab initioand direct dynamics study of the reaction of Cl atoms with HOCO. J Chem Phys 2008; 129:064301. [DOI: 10.1063/1.2965523] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
14
|
Yu HG, Muckerman JT, Francisco JS. Quantum force molecular dynamics study of the reaction of O atoms with HOCO. J Chem Phys 2007; 127:094302. [PMID: 17824734 DOI: 10.1063/1.2770463] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The reaction of HOCO with O atoms has been studied using a direct ab initio dynamics approach based on the scaling all correlation UCCD/D95(d,p) method. Ab initio calculations point to two possible reaction mechanisms for the O+HOCO-->OH+CO2 reaction. They are a direct hydrogen abstraction and an oxygen addition reaction through a short-lived HOC(O)O intermediate. The dynamics results show that only the addition mechanism is important under the conditions considered here. The lifetime of the HOC(O)O complex is predicted to be 172+/-15 fs. This is typical of a direct and fast radical-radical reaction. At room temperature, the calculated thermal rate coefficient is 1.44 x 10(-11) cm(3) mol(-1) s(-1) and its temperature dependence is rather weak. The two kinds of reactive trajectories are illustrated in detail.
Collapse
Affiliation(s)
- Hua-Gen Yu
- Department of Chemistry, Brookhaven National Laboratory, Upton, New York 11973-5000, USA.
| | | | | |
Collapse
|
15
|
Yu HG. Ab initio molecular dynamics simulation of photodetachment reaction of cyclopentoxide. Chem Phys Lett 2007. [DOI: 10.1016/j.cplett.2007.04.079] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|