1
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Chao W, Markus CR, Okumura M, Winiberg FAF, Percival CJ. Chemical Kinetic Study of the Reaction of CH 2OO with CH 3O 2. J Phys Chem Lett 2024; 15:3690-3697. [PMID: 38546268 DOI: 10.1021/acs.jpclett.4c00159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
Criegee intermediates play an important role in the oxidizing capacity of the Earth's troposphere. Although extensive studies have been conducted on Criegee intermediates in the past decade, their kinetics with radical species remain underexplored. We investigated the kinetics of the simplest Criegee intermediate, CH2OO, with the methyl peroxy radical, CH3O2, as a model system to explore the reactivities of Criegee intermediates with peroxy radicals. Using a multipass UV-Vis spectrometer coupled to a pulsed-laser photolysis flow reactor, CH2OO and CH3O2 were generated simultaneously from the photolysis of CH2I2/CH3I/O2/N2 mixtures with CH2OO measured directly near 340 nm. We determined a reaction rate coefficient kCH2OO+CH3O2 = (1.7 ± 0.5) × 10-11 cm3 s-1 at 294 K and 10 Torr, where the influence of iodine adducts is reduced. This rate coefficient is faster than previous theoretical predictions, highlighting the challenges in accurately describing the interaction between zwitterionic and biradical characteristics of Criegee intermediates.
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Affiliation(s)
- Wen Chao
- Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd, Pasadena, California 91125, United States
| | - Charles R Markus
- NASA Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, California 91109-8099, United States
| | - Mitchio Okumura
- Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd, Pasadena, California 91125, United States
| | - Frank A F Winiberg
- NASA Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, California 91109-8099, United States
| | - Carl J Percival
- NASA Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, California 91109-8099, United States
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2
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Xu Y, Wu S, Cui Z, Dai W, Fan Y, Wu W, Chen P, Pan D. Photolysis of CH3I under UV irradiation: effects of solvents, pH, and concentration. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-022-08690-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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3
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Zhang P, He B, Zhao M, Zhang Y. Role of monomolecular water and bimolecular water in IO + CH2O reaction. J Mol Model 2022; 28:308. [DOI: 10.1007/s00894-022-05295-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Accepted: 08/25/2022] [Indexed: 11/29/2022]
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4
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Mondal K, Kumar A, Rajakumar B. Kinetics of IO radicals with ethyl formate and ethyl acetate: a study using cavity ring-down spectroscopy and theoretical methods. Phys Chem Chem Phys 2021; 23:25974-25993. [PMID: 34783802 DOI: 10.1039/d1cp02615a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The gas-phase kinetics of the reactions of IO radicals with ethyl formate (EF) and ethyl acetate (EA) were investigated experimentally using cavity ring-down spectroscopy (CRDS). IO radicals were generated in situ in the CRD reaction zone by photolyzing a mixture of (CH3I + O3 + N2) at 248 nm and thereby probed at 445.04 nm. The rate coefficients for the reactions (IO + EF) and (IO + EA) were measured at a total pressure of 65 Torr of N2 in the temperature range of 258-358 and 260-360 K, respectively. The rate coefficients for the reactions (IO + EF) and (IO + EA) were measured experimentally at room temperature to be kExpt,298KIO+EF = (3.38 ± 0.67) × 10-14 and kExpt,298KIO+EA = (1.56 ± 0.30) × 10-13 cm3 molecule-1 s-1, respectively. The effects of pressure and photolysis laser fluence on the kinetics of test reactions were found to be negligible within the experimental uncertainties for the studied range. To complement our experimental findings, the kinetics of the title reactions were investigated theoretically using canonical variational transition state theory (CVT) with small curvature tunnelling (SCT) at the CCSD(T)//M06-2X/def2-SV(P) level of theory in temperatures between 200 and 400 K. Very good agreement was observed between the experimentally measured and theoretically calculated rate coefficients for both the reactions at 298 K. The thermochemical parameters as well as the branching ratios for the title reactions are also discussed in this study.
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Affiliation(s)
- Koushik Mondal
- Department of Chemistry, Indian Institute of Technology Madras, Chennai-600036, India.
| | - Avinash Kumar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai-600036, India.
| | - B Rajakumar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai-600036, India.
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5
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Hughey KD, Tonkyn RG, Harper WW, Young VL, Myers TL, Johnson TJ. Preliminary studies of UV photolysis of gas-phase CH3I in air: Time-resolved infrared identification of methanol and formaldehyde products. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.138403] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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6
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Lin YH, Li YL, Chao W, Takahashi K, Lin JJM. The role of the iodine-atom adduct in the synthesis and kinetics of methyl vinyl ketone oxide—a resonance-stabilized Criegee intermediate. Phys Chem Chem Phys 2020; 22:13603-13612. [DOI: 10.1039/d0cp02085k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The adduct decomposition is the major pathway that forms CH3(C2H3)COO (MVKO) + I via the reaction of CH3(C2H3)CI + O2 for P > 50 Torr. The related kinetics of the adduct and MVKO + SO2 reactions have been studied over 4–700 Torr and 278–319 K.
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Affiliation(s)
- Yen-Hsiu Lin
- Institute of Atomic and Molecular Sciences
- Academia Sinica
- Taipei 10617
- Taiwan
- Department of Chemistry
| | - Yu-Lin Li
- Institute of Atomic and Molecular Sciences
- Academia Sinica
- Taipei 10617
- Taiwan
- Department of Chemistry
| | - Wen Chao
- Institute of Atomic and Molecular Sciences
- Academia Sinica
- Taipei 10617
- Taiwan
| | - Kaito Takahashi
- Institute of Atomic and Molecular Sciences
- Academia Sinica
- Taipei 10617
- Taiwan
| | - Jim Jr-Min Lin
- Institute of Atomic and Molecular Sciences
- Academia Sinica
- Taipei 10617
- Taiwan
- Department of Chemistry
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7
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8
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Chattopadhyay A, Samanta M, Mondal K, Chakraborty T. Mid-infrared quantum cascade laser spectroscopy probing of the kinetics of an atmospherically significant radical reaction,
$$\hbox {CH}_{3}\hbox {O}_{2}+\hbox {NO}_{2}+\hbox {M}\rightarrow \hbox {CH}_{3}\hbox {O}_{2}\hbox {NO}_{2}+\hbox {M}$$
CH
3
O
2
+
NO
2
+
M
→
CH
3
O
2
NO
2
+
M
, in the gas phase. J CHEM SCI 2018. [DOI: 10.1007/s12039-018-1451-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Zhang Y, Song R, Sun Y, Sun J, Tang Y, Liu YG, Wang R. Mechanistic and kinetic study on the reaction of methylperoxyl radical with atomic hydrogen. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2017.09.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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10
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Zhang Y, Song R, Sun Y, Sun J, Wang R. Mechanistic and kinetic study on the reaction of methylperoxy radical with atomic iodine. J Mol Graph Model 2017; 76:512-520. [PMID: 28735893 DOI: 10.1016/j.jmgm.2017.05.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Revised: 04/26/2017] [Accepted: 05/02/2017] [Indexed: 11/19/2022]
Abstract
Singlet and triplet potential energy surfaces for the CH3O2 with I reaction have been investigated computationally to propose the reaction mechanisms and possible products. Multichannel RRKM theory and transition-state theory have been used to compute the overall and individual rate constants at 200-3000K and 10-14-1014Torr. On the singlet PES, addition-elimination, substitution and H-abstraction mechanisms are located, and the addition-elimination mechanism is dominant. At 70Torr with N2 as bath gas, IM1(CH3OOI) formed by collisional stabilization is dominated at 200-300K, whereas CH2O and HIO are the major products at the temperatures between 350 and 3000K; The title reaction exhibits the typical falloff behavior. The results show that temperature and pressure affect the yield of products. Furthermore, the predicted rate constants at 298K 70Torr of N2 agree well with the available experimental values. On the triplet PES, the most favorable product should be CH3I+O2(3Σ) at atmospheric condition. Other two pathways on the triplet PES will not compete with the pathways on the singlet PES in kinetically and thermodynamically.
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Affiliation(s)
- Yunju Zhang
- Key Laboratory of Photoinduced Functional Materials, Mianyang Normal University, Mianyang 621000, PR China.
| | - Ruojing Song
- Key Laboratory of Photoinduced Functional Materials, Mianyang Normal University, Mianyang 621000, PR China
| | - Yuxi Sun
- Key Laboratory of Photoinduced Functional Materials, Mianyang Normal University, Mianyang 621000, PR China
| | - Jingyu Sun
- Hubei Collaborative Innovation Center for Rare Metal Chemistry, Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical engineering, Hubei Normal University, Cihu Road 11, Huangshi, Hubei 435002, PR China
| | - Rongshun Wang
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Renmin Road 5268, Changchun, Jilin 130024, PR China
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11
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Assaf E, Song B, Tomas A, Schoemaecker C, Fittschen C. Rate Constant of the Reaction between CH 3O 2 Radicals and OH Radicals Revisited. J Phys Chem A 2016; 120:8923-8932. [PMID: 27790905 DOI: 10.1021/acs.jpca.6b07704] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The reaction between CH3O2 and OH radicals has been studied in a laser photolysis cell using the reaction of F atoms with CH4 and H2O for the simultaneous generation of both radicals, with F atoms generated through 248 nm photolysis of XeF2. An experimental setup combining cw-Cavity Ring Down Spectroscopy (cw-CRDS) and high repetition rate laser-induced fluorescence (LIF) to a laser photolysis cell has been used. The absolute concentration of CH3O2 was measured by cw-CRDS, while the relative concentration of OH(v = 0) radicals was determined by LIF. To remove dubiety from the quantification of CH3O2 by cw-CRDS in the near-infrared, its absorption cross section has been determined at 7489.16 cm-1 using two different methods. A rate constant of k1 = (1.60 ± 0.4) × 10-10 cm3 s-1 has been determined at 295 K, nearly a factor of 2 lower than an earlier determination from our group ((2.8 ± 1.4) × 10-10 cm3 s-1) using CH3I photolysis as a precursor. Quenching of electronically excited I atoms (from CH3I photolysis) in collision with OH(v = 0) is suspected to be responsible for a bias in the earlier, fast rate constant.
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Affiliation(s)
- Emmanuel Assaf
- Université Lille , CNRS, UMR 8522-PC2A-Physicochimie des Processus de Combustion et de l'Atmosphère, F-59000 Lille, France
| | - Bo Song
- Université Lille , CNRS, UMR 8522-PC2A-Physicochimie des Processus de Combustion et de l'Atmosphère, F-59000 Lille, France
| | - Alexandre Tomas
- Mines Douai , Département Sciences de l'Atmosphère et Génie de l'Environnement (SAGE), F-59508 Douai, France.,Université Lille Nord de France , F-59000 Lille, France
| | - Coralie Schoemaecker
- Université Lille , CNRS, UMR 8522-PC2A-Physicochimie des Processus de Combustion et de l'Atmosphère, F-59000 Lille, France
| | - Christa Fittschen
- Université Lille , CNRS, UMR 8522-PC2A-Physicochimie des Processus de Combustion et de l'Atmosphère, F-59000 Lille, France
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12
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Khanniche S, Louis F, Cantrel L, Černušák I. A theoretical study of the microhydration of iodic acid (HOIO2). COMPUT THEOR CHEM 2016. [DOI: 10.1016/j.comptc.2016.09.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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13
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Wang J, Tang Y, Lu C, Zhang W, Sun J, Wang R. Computational study on mechanisms and pathways of the atmospheric C2H5O2 + IO reaction. COMPUT THEOR CHEM 2016. [DOI: 10.1016/j.comptc.2016.06.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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14
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Khanniche S, Louis F, Cantrel L, Černušák I. A Density Functional Theory and ab Initio Investigation of the Oxidation Reaction of CO by IO Radicals. J Phys Chem A 2016; 120:1737-49. [PMID: 26908233 DOI: 10.1021/acs.jpca.6b00047] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
To get an insight into the possible reactivity between iodine oxides and CO, a first step was to study the thermochemical properties and kinetic parameters of the reaction between IO and CO using theoretical chemistry tools. All stationary points involved were optimized using the Becke's three-parameter hybrid exchange functional coupled with the Lee-Yang-Parr nonlocal correlation functional (B3LYP) and the Møller-Plesset second-order perturbation theory (MP2). Single-point energy calculations were performed using the coupled cluster theory with the iterative inclusion of singles and doubles and the perturbative estimation for triple excitations (CCSD(T)) and the aug-cc-pVnZ (n = T, Q, and 5) basis sets on geometries previously optimized at the aug-cc-pVTZ level. The energetics was then recalculated using the one-component DK-CCSD(T) approach with the relativistic ANO basis sets. The spin-orbit coupling for the iodine containing species was calculated a posteriori using the restricted active space state interaction method in conjunction with the multiconfigurational perturbation theory (CASPT2/RASSI) employing the complete active space (CASSCF) wave function as the reference. The CCSD(T) energies were also corrected for BSSE for molecular complexes and refined with the extrapolation to CBS limit while the DK-CCSD(T) values were refined with the extrapolation to FCI. The exploration of the potential energy surface revealed a two-steps mechanism with a trans and a cis pathway. The rate constants for the direct and complex mechanism were computed as a function of temperature (250-2500 K) using the canonical transition state theory. The three-parameter Arrhenius expressions obtained for the direct and indirect mechanism at the DK-CCSD(T)-cf level of theory is 1.49 × 10(-17) × T(1.77) exp(-47.4 (kJ mol(-1))/RT).
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Affiliation(s)
- Sarah Khanniche
- University Lille, CNRS, UMR 8522-PC2A, PhysicoChimie des Processus de Combustion et de l'Atmosphère, F-59000 Lille, France.,Laboratoire de Recherche Commun IRSN-CNRS-Lille1 "Cinétique Chimique, Combustion, Réactivité″ (C3R), Cadarache, St Paul Lez Durance, 13115, France
| | - Florent Louis
- University Lille, CNRS, UMR 8522-PC2A, PhysicoChimie des Processus de Combustion et de l'Atmosphère, F-59000 Lille, France.,Laboratoire de Recherche Commun IRSN-CNRS-Lille1 "Cinétique Chimique, Combustion, Réactivité″ (C3R), Cadarache, St Paul Lez Durance, 13115, France
| | - Laurent Cantrel
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSN-RES, Cadarache, St Paul Lez Durance, 13115, France.,Laboratoire de Recherche Commun IRSN-CNRS-Lille1 "Cinétique Chimique, Combustion, Réactivité″ (C3R), Cadarache, St Paul Lez Durance, 13115, France
| | - Ivan Černušák
- Department of Physical and Theoretical Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava , Mlynská dolina CH1, 84215 Bratislava, Slovakia
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15
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Tang Y, Zhang W, Song Z, Wang X, Sun J, Wang R. Theoretical study on mechanisms and pathways of the atmospheric CF3O2+BrO reaction. J Fluor Chem 2015. [DOI: 10.1016/j.jfluchem.2015.09.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Morajkar P, Bossolasco A, Schoemaecker C, Fittschen C. Photolysis of CH3CHO at 248 nm: Evidence of triple fragmentation from primary quantum yield of CH3 and HCO radicals and H atoms. J Chem Phys 2014; 140:214308. [DOI: 10.1063/1.4878668] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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17
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18
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Groß CBM, Dillon TJ, Crowley JN. Pressure dependent OH yields in the reactions of CH3CO and HOCH2CO with O2. Phys Chem Chem Phys 2014; 16:10990-8. [DOI: 10.1039/c4cp01108b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Xiang T, Si H. A computational investigation of product channels in the CH3O2+F reaction. COMPUT THEOR CHEM 2014. [DOI: 10.1016/j.comptc.2013.11.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Faragó EP, Viskolcz B, Schoemaecker C, Fittschen C. Absorption Spectrum and Absolute Absorption Cross Sections of CH3O2 Radicals and CH3I Molecules in the Wavelength Range 7473–7497 cm–1. J Phys Chem A 2013; 117:12802-11. [DOI: 10.1021/jp408686s] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eszter P. Faragó
- PysicoChimie
des Processus de Combustion et de l’Atmosphère PC2A, CNRS - University Lille 1, Cité Scientifique, Bât. C11, 59655 Villeneuve d’Ascq, France
- Department
of Chemical Informatics, Faculty of Education, University of Szeged, Boldogasszony sgt. 6, Szeged, Hungary 6725
| | - Bela Viskolcz
- Department
of Chemical Informatics, Faculty of Education, University of Szeged, Boldogasszony sgt. 6, Szeged, Hungary 6725
| | - Coralie Schoemaecker
- PysicoChimie
des Processus de Combustion et de l’Atmosphère PC2A, CNRS - University Lille 1, Cité Scientifique, Bât. C11, 59655 Villeneuve d’Ascq, France
| | - Christa Fittschen
- PysicoChimie
des Processus de Combustion et de l’Atmosphère PC2A, CNRS - University Lille 1, Cité Scientifique, Bât. C11, 59655 Villeneuve d’Ascq, France
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21
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Li H, Tang Y, Wang R. Atmospheric chemistry of CF3O2: a theoretical study on mechanisms and pathways of the CF3O2 + IO reaction. Phys Chem Chem Phys 2013; 15:5936-44. [PMID: 23493819 DOI: 10.1039/c3cp43797c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The mechanisms and reaction pathways for the CF3O2 + IO reaction have been investigated by quantum chemistry methods. It has been found that the title reaction takes place on both the singlet and triplet potential energy surfaces (PES). On the singlet PES, the most important products include CF3OOOI, CF3OOIO, CF3OIO2, and CF2O + FIO2, while other products such as CF2O + FOIO, CF2O + FOOI, CF3OOI + O((3)P), CF3OI + O2 ((1)Δ and (3)Σ), and CF3O + OIO are negligible due to high barriers or unstable formations. On the triplet PES, CF3O + OIO is the dominant product with a lower barrier. As for FIO2 and it isomers, the most stable one is FIO2. TDDFT (Time Dependent Density Functional Theory) calculation indicates that CF3OOOI, CF3OOIO and CF3OIO2 undergo photolysis easily under sunlight. Moreover, a minor contribution relative to hydrogen is found in the CX3O2 + IO (X = H and F) reactions.
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Affiliation(s)
- Hongwei Li
- School of Environmental and Municipal Engineering, Qingdao Technological University, Fushun Road 11, Qingdao, Shandong, 266033 PR China
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22
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Gómez Martín JC, Gálvez O, Baeza-Romero MT, Ingham T, Plane JMC, Blitz MA. On the mechanism of iodine oxide particle formation. Phys Chem Chem Phys 2013; 15:15612-22. [DOI: 10.1039/c3cp51217g] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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23
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Orlando JJ, Tyndall GS. Laboratory studies of organic peroxy radical chemistry: an overview with emphasis on recent issues of atmospheric significance. Chem Soc Rev 2012; 41:6294-317. [PMID: 22847633 DOI: 10.1039/c2cs35166h] [Citation(s) in RCA: 244] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- John J Orlando
- National Center for Atmospheric Research, Earth System Laboratory, Atmospheric Chemistry Division, Boulder, USA.
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24
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Leather KE, Bacak A, Wamsley R, Archibald AT, Husk A, Shallcross DE, Percival CJ. Temperature and pressure dependence of the rate coefficient for the reaction between ClO and CH3O2 in the gas-phase. Phys Chem Chem Phys 2012; 14:3425-34. [DOI: 10.1039/c2cp22834c] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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25
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Saiz-Lopez A, Plane JMC, Baker AR, Carpenter LJ, von Glasow R, Gómez Martín JC, McFiggans G, Saunders RW. Atmospheric Chemistry of Iodine. Chem Rev 2011; 112:1773-804. [DOI: 10.1021/cr200029u] [Citation(s) in RCA: 383] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Alfonso Saiz-Lopez
- Laboratory for Atmospheric and Climate Science (CIAC), CSIC, Toledo, Spain
| | - John M. C. Plane
- School of Chemistry, University of Leeds, Leeds, LS2 9JT, United Kingdom
| | - Alex R. Baker
- School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, United Kingdom
| | - Lucy J. Carpenter
- Department of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom
| | - Roland von Glasow
- School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, United Kingdom
| | | | - Gordon McFiggans
- School of Earth, Atmospheric & Environmental Sciences, University of Manchester, Manchester, M13 9PL, United Kingdom
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26
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Gravestock TJ, Blitz MA, Bloss WJ, Heard DE. A Multidimensional Study of the Reaction CH
2
I+O
2
: Products and Atmospheric Implications. Chemphyschem 2010; 11:3928-41. [DOI: 10.1002/cphc.201000575] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Tom J. Gravestock
- School of Chemistry, University of Leeds, Leeds, LS2 9JT (UK), Fax: (+44) 113‐343‐6401
- Current Address: Brighton College, Eastern Road, Brighton, BN2 0AL (UK)
| | - Mark A. Blitz
- School of Chemistry, University of Leeds, Leeds, LS2 9JT (UK), Fax: (+44) 113‐343‐6401
- National Centre for Atmospheric Science, University of Leeds, Leeds, LS2 9JT (UK)
| | - William J. Bloss
- School of Geography, Earth & Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT (UK)
| | - Dwayne E. Heard
- School of Chemistry, University of Leeds, Leeds, LS2 9JT (UK), Fax: (+44) 113‐343‐6401
- National Centre for Atmospheric Science, University of Leeds, Leeds, LS2 9JT (UK)
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27
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Dillon TJ, Tucceri ME, Crowley JN. Rate Coefficients for the Reaction of Iodine Oxide with Methyl Peroxy Radicals. Chemphyschem 2010; 11:4011-8. [DOI: 10.1002/cphc.201000466] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Terry J. Dillon
- Max‐Planck‐Institut für Chemie, Division of Atmospheric Chemistry, 55020 Mainz (Germany), Fax: (+49) 6131‐305‐388
| | - María E. Tucceri
- Max‐Planck‐Institut für Chemie, Division of Atmospheric Chemistry, 55020 Mainz (Germany), Fax: (+49) 6131‐305‐388
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CCT—La Plata‐CONICET, Casilla de correo 16, sucursal 4, 1900, La Plata, (Argentina)
| | - John N. Crowley
- Max‐Planck‐Institut für Chemie, Division of Atmospheric Chemistry, 55020 Mainz (Germany), Fax: (+49) 6131‐305‐388
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Enami S, Sakamoto Y, Yamanaka T, Hashimoto S, Kawasaki M, Tonokura K, Tachikawa H. Reaction Mechanisms of IO Radical Formation from the Reaction of CH3I with Cl Atom in the Presence of O2. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2008. [DOI: 10.1246/bcsj.81.1250] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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GE MF, MA CP. Structures, Vibrational Spectra, and Relative Energetics of CH 3COIO 3Isomers. CHINESE J CHEM 2008. [DOI: 10.1002/cjoc.200890209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Dillon TJ, Tucceri ME, Sander R, Crowley JN. LIF studies of iodine oxide chemistry : Part 3. Reactions IO + NO3 → OIO + NO2, I + NO3 → IO + NO2, and CH2I + O2 → (products): implications for the chemistry of the marine atmosphere at night. Phys Chem Chem Phys 2008; 10:1540-54. [DOI: 10.1039/b717386e] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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31
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Vaughan S, Gherman T, Ruth AA, Orphal J. Incoherent broad-band cavity-enhanced absorption spectroscopy of the marine boundary layer species I2, IO and OIO. Phys Chem Chem Phys 2008; 10:4471-7. [PMID: 18654688 DOI: 10.1039/b802618a] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Stewart Vaughan
- Department of Physics, University College Cork, Cork, Ireland
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32
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Huang DR, Chu LK, Lee YP. Infrared absorption of gaseous CH3OO detected with a step-scan Fourier-transform spectrometer. J Chem Phys 2007; 127:234318. [DOI: 10.1063/1.2807241] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Formation of the iodine monoxide radical from gas-phase reactions of iodoalkyl radicals with molecular oxygen. Chem Phys Lett 2007. [DOI: 10.1016/j.cplett.2007.08.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Dillon TJ, Horowitz A, Crowley JN. Absolute rate coefficients for the reactions of O(1D) with a series of n-alkanes. Chem Phys Lett 2007. [DOI: 10.1016/j.cplett.2007.06.044] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Drougas E, Kosmas AM. Ab Initio Characterization of (CH3IO3) Isomers and the CH3O2 + IO Reaction Pathways. J Phys Chem A 2007; 111:3402-8. [PMID: 17419596 DOI: 10.1021/jp068348p] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The geometries, harmonic vibrational frequencies, relative energetics, and enthalpies of formation of (CH(3)IO(3)) isomers and the reaction CH(3)O(2) + IO have been investigated using quantum mechanical methods. Optimization has been performed at the MP2 level of theory, using all electron and effective core potential, ECP, computational techniques. The relative energetics has been studied by single-point calculations at the CCSD(T) level. Methyl iodate, CH(3)OIO(2), is found to be the lowest-energy isomer showing particular stabilization. The two nascent association minima, CH(3)OOOI and CH(3)OOIO, show similar stabilities, and they are considerably higher located than CH(3)OIO(2). Interisomerization barriers have been determined, along with the transition states involved in various pathways of the reaction CH(3)O(2) + IO.
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Affiliation(s)
- Evangelos Drougas
- Division of Physical Chemistry, Department of Chemistry, University of Ioannina, Greece 45110
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