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Chebbi W, Derbel N, Alijah A, Cours T. UV-spectrum and photodecomposition of peroxynitrous acid in the troposphere. Phys Chem Chem Phys 2023; 26:123-129. [PMID: 38059643 DOI: 10.1039/d3cp04580c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
The UV spectrum of peroxynitrous acid, HOONO, was computed at the B3LYP/AVTZ and MCSCF/AVTZ levels using the fewest switches surface hopping algorithm. Due to large-amplitude vibrational motions of this molecule, the maxima in the simulated spectra are displaced from the positions of vertical excitations. The three lowest excited electronic singlet states, which are all repulsive, can be reached by UV absorption. The photolysis products are determined, and the photolysis rate constant is provided for the first time. We found that near the tropopause the photolysis rate constant J ≈ 6 × 10-4 s-1, exceeds that for thermal decomposition by two orders of magnitude. The photolysis lifetime is about 30 minutes. Thus, photolysis is an important process and should be included in atmospheric models.
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Affiliation(s)
- Wiem Chebbi
- LSAMA, Laboratoire de Spectroscopie Atomique, Moléculaire et Applications, Department of Physics, University Tunis - El Manar, 1060 Tunis, Tunisia
- GSMA, Groupe de Spectrométrie Moléculaire et Atmosphérique, UMR CNRS 7331, University of Reims Champagne-Ardenne, 51100 Reims, France.
| | - Najoua Derbel
- LSAMA, Laboratoire de Spectroscopie Atomique, Moléculaire et Applications, Department of Physics, University Tunis - El Manar, 1060 Tunis, Tunisia
| | - Alexander Alijah
- GSMA, Groupe de Spectrométrie Moléculaire et Atmosphérique, UMR CNRS 7331, University of Reims Champagne-Ardenne, 51100 Reims, France.
| | - Thibaud Cours
- GSMA, Groupe de Spectrométrie Moléculaire et Atmosphérique, UMR CNRS 7331, University of Reims Champagne-Ardenne, 51100 Reims, France.
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2
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Bhasi P, Nhlabatsi ZP, Sitha S. Expanding the applicability of electrostatic potentials to the realm of transition states. Phys Chem Chem Phys 2016; 18:13002-9. [PMID: 27108668 DOI: 10.1039/c6cp01506a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Central to any reaction mechanism study, and sometimes a challenging job, is tracing a transition state in a reaction path. For the first time, electrostatic potentials (ESP) of the reactants were used as guiding tactics to predict whether there is a possibility of any transition state in a reaction surface. The main motive behind this strategy is to see whether the directionality nature of the transition state has something to do with the anisotropic natures of the ESP with their embedded directionalities. Strategically, some atmospherically important, but simple, reactions have been chosen for this study, which heretofore were believed to be barrierless. By carefully analysing the ESP maps of the reactants, regions of possible interactions were located. Using the bilinear interpolation of the 2D grids of the ESP surfaces, search co-ordinates were fine-tuned for a local gradient based approach for the search of a transition state. Out of the three reactions studied in this work, we were able to successfully locate transition states, for the first time, in two cases and the third one still proved to be barrierless. This gives a clear indication that though ESP maps can qualitatively predict the possibility of a transition state; it is not always true that there should definitely be a transition state, as some of the reaction surfaces may genuinely be barrierless. But, nevertheless this strategy definitely has credential to be tested for many more reactions, either new or already established, and may be applied to create the initial search co-ordinates for any well-established transition state search method. Moreover, we have observed that the analysis of the ESP maps of the reactants were very much useful in explaining the nature of interactions existing in those observed transition states and we hope the same can also be extended to any transition state in an electrostatically driven reaction potential energy surface.
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Affiliation(s)
- Priya Bhasi
- Department of Chemistry, University of Johannesburg, PO Box 524, Auckland Park, Johannesburg, 2006, South Africa.
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3
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Troe J. Refined Representation of Falloff Curves for the Reaction HO + NO2 + N2 → (HONO2, HOONO) + N2. J Phys Chem A 2012; 116:6387-93. [DOI: 10.1021/jp212095n] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jürgen Troe
- Institut für Physikalische Chemie der Universität and Max-Planck-Institut für Biophysikalische Chemie, Göttingen Tammannstrasse 6, D-37077 Göttingen,
Germany
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4
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Koppenol WH, Bounds PL, Nauser T, Kissner R, Rüegger H. Peroxynitrous acid: controversy and consensus surrounding an enigmatic oxidant. Dalton Trans 2012; 41:13779-87. [DOI: 10.1039/c2dt31526b] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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5
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Cox RA. Evaluation of laboratory kinetics and photochemical data for atmospheric chemistry applications. Chem Soc Rev 2012; 41:6231-46. [DOI: 10.1039/c2cs35092k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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6
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McCoy AB, Sprague MK, Okumura M. The Role of Torsion/Torsion Coupling in the Vibrational Spectrum of Cis−Cis HOONO. J Phys Chem A 2009; 114:1324-33. [DOI: 10.1021/jp905731h] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Anne B. McCoy
- Department of Chemistry, The Ohio State University, Columbus, Ohio 43210
| | - Matthew K. Sprague
- Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, California 91125
| | - Mitchio Okumura
- Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, California 91125
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7
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Rasmussen CL, Hansen J, Marshall P, Glarborg P. Experimental measurements and kinetic modeling of CO/H2/O2/NOxconversion at high pressure. INT J CHEM KINET 2008. [DOI: 10.1002/kin.20327] [Citation(s) in RCA: 146] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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8
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Stimac PJ, Barker JR. Non-RRKM Dynamics in the CH3O2 + NO Reaction System. J Phys Chem A 2008; 112:2553-62. [DOI: 10.1021/jp710016n] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Philip J. Stimac
- Department of Atmospheric, Oceanic, and Space Sciences, University of Michigan, Ann Arbor, Michigan 48109-2143
| | - John R. Barker
- Department of Atmospheric, Oceanic, and Space Sciences, University of Michigan, Ann Arbor, Michigan 48109-2143
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9
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Konen IM, Li EXJ, Stephenson TA, Lester MI. Second OH overtone excitation and statistical dissociation dynamics of peroxynitrous acid. J Chem Phys 2007; 123:204318. [PMID: 16351267 DOI: 10.1063/1.2126968] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
The second OH overtone transition of the trans-perp conformer of peroxynitrous acid (tp-HOONO) is identified using infrared action spectroscopy. HOONO is produced by the recombination of photolytically generated OH and NO(2) radicals, and then cooled in a pulsed supersonic expansion. The second overtone transition is assigned to tp-HOONO based on its vibrational frequency (10 195.3 cm(-1)) and rotational band contour, which are in accord with theoretical predictions and previous observations of the first overtone transition. The transition dipole moment associated with the overtone transition is rotated considerably from the OH bond axis, as evident from its hybrid band composition, indicating substantial charge redistribution upon OH stretch excitation. The overtone band exhibits homogeneous line broadening that is attributed to intramolecular vibrational redistribution, arising from the coupling of the initially excited OH stretch to other modes that ultimately lead to dissociation. The quantum state distributions of the OH X (2)Pi (nu=0) products following first and second OH overtone excitation of tp-HOONO are found to be statistical by comparison with three commonly used statistical models. The product state distributions are principally determined by the tp-HOONO binding energy of 16.2(1) kcal mol(-1). Only a small fraction of the OH products are produced in nu=1 following the second overtone excitation, consistent with statistical predictions.
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Affiliation(s)
- Ian M Konen
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
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10
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Miller Y, Chaban GM, Finlayson-Pitts BJ, Gerber RB. Photochemical processes induced by vibrational overtone excitations: dynamics simulations for cis-HONO, trans-HONO, HNO3, and HNO3-H2O. J Phys Chem A 2007; 110:5342-54. [PMID: 16623461 DOI: 10.1021/jp0559940] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Photochemical processes in HNO3, HNO3-H2O, and cis- and trans-HONO following overtone excitation of the OH stretching mode are studied by classical trajectory simulations. Initial conditions for the trajectories are sampled according to the initially prepared vibrational wave function. Semiempirical potential energy surfaces are used in "on-the-fly" simulations. Several tests indicate at least semiquantitative validity of the potential surfaces employed. A number of interesting new processes and intermediate species are found. The main results include the following: (1) In excitation of HNO3 to the fifth and sixth OH-stretch overtone, hopping of the H atom between the oxygen atoms is found to take place in nearly all trajectories, and can persist for many picoseconds. H-atom hopping events have a higher yield and a faster time scale than the photodissociation of HNO3 into OH and NO2. (2) A fraction of the trajectories for HNO3 show isomerization into HOONO, which in a few cases dissociates into HOO and NO. (3) For high overtone excitation of HONO, isomerization into the weakly bound species HOON is seen in all trajectories, in part of the events as an intermediate step on the way to dissociation into OH + NO. This process has not been reported previously. Well-established processes for HONO, including cis-trans isomerization and H hopping are also observed. (4) Only low overtone levels of HNO3-H2O have sufficiently long liftimes to be spectrocopically relevant. Excitation of these OH stretching overtones is found to result in the dissociation of the cluster H hopping, or dissociation of HNO3 does not take place. The results demonstrate the richness of processes induced by overtone excitation of HNO(x) species, with evidence for new phenomena. Possible relevance of the results to atmospheric processes is discussed.
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Affiliation(s)
- Y Miller
- Department of Physical Chemistry and Fritz Haber Research Center, The Hebrew University, Jerusalem 91904, Israel
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11
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Williams CF, Pogrebnya SK, Clary DC. Quantum study on the branching ratio of the reaction NO2+OH. J Chem Phys 2007; 126:154321. [PMID: 17461640 DOI: 10.1063/1.2714511] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A reduced dimensionality (RD) approximation is developed for the title reaction which treats the angle of approach of the hydroxyl radical to the nitrogen dioxide molecule and the radial distance between the two species explicitly. All other degrees of freedom are treated adiabatically. Electronic structure calculations at the complete active space self-consistent field level are used to fit a potential energy surface (PES) in these two coordinates. Within this RD model the adiabatic capture centrifugal sudden approximation is used to calculate the high pressure limit rate constant. A correction for reflection from the PES due to rotationally nonadiabatic transitions is applied using the wave packet capture approximation. The branching ratio for the title reaction is calculated for the atmospherically significant temperature range of 200-400 K at 20 Torr without distinguishing between the conformers of HOONO. The result is k(HOONO)k(HNO(3) )=0.051 at 20 Torr and 300 K, which is in good agreement with the measured branching ratio between cis-cis-HOONO and nitric acid. This suggests that most of the different conformers of HOONO were converted to the most stable cis-cis conformer on the time scale of the measurements made.
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Affiliation(s)
- Christopher F Williams
- Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QZ, United Kingdom.
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12
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Zhang J, Donahue NM. Constraining the Mechanism and Kinetics of OH + NO2 and HO2 + NO Using the Multiple-Well Master Equation. J Phys Chem A 2006; 110:6898-911. [PMID: 16722705 DOI: 10.1021/jp0556512] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Several recent experimental studies have provided substantial new constraints for the mechanisms on the HNO3 potential energy surface. These include observations of biexponential OH decay over short time scales from OH + NO2, which constrain key properties of the short-lived HOONO intermediate, observations of both conformers of the HOONO intermediate itself, isotopic scrambling data for 18OH + NO2, and observations of HONO2 production from the HO2 + NO reaction. We combine all of these recent data in a master-equation simulation of the system. This simulation is initialized with computational values for both stable species (wells) and transition states, but parameters are then adjusted to fit the observations. All parameters are kept within limits defined by experimental and theoretical uncertainty, and all converge away from their bounds. The primary fitting is carried out on the OH kinetic data-we first fit the biexponential kinetics, then address the isotopic scrambling. Isotopic scrambling is shown to be rapid but not complete at low pressure, while at least two parameter sets are shown to be consistent with the biexponential data. Of these two parameter sets, one is far more consistent with recent observations of trans-HOONO decay, isotopic scrambling, and HONO2 production from HO2 + NO. This we regard as the most probable potential energy surface for the reaction. On this PES, cis-trans isomerization for HOONO is slow but isomerization of trans-HOONO to HONO2 is rapid. This has significant implications for observed HOONO behavior and also HONO2 formation in the atmosphere from both HO2 + NO and OH + NO2.
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Affiliation(s)
- Jieyuan Zhang
- Department of Chemistry and Chemical Engineering, Carnegie Mellon University, Doherty Hall 1107, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, USA
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13
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Li EXJ, Konen IM, Lester MI, McCoy AB. Spectroscopic Characterization of Peroxynitrous Acid in cis-perp Configurations. J Phys Chem A 2006; 110:5607-12. [PMID: 16640353 DOI: 10.1021/jp056959w] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This paper presents experimental evidence, supported by two-dimensional theoretical calculations, that HOONO can be observed in cis-perp (cp) configurations in a pulsed supersonic expansion. The spectral properties (transition frequency, rotational constants, and transition type) of OH overtone transitions originating from a state with predominately cp character are predicted theoretically and compared with those associated with a weak feature at 6996.2 cm(-1) observed experimentally using infrared action spectroscopy. This spectral feature is attributed to HOONO in cp configurations based on its vibrational frequency, rotational band contour, and resultant OH product state distribution.
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Affiliation(s)
- Eunice X J Li
- Department of Chemistry, University of Pennsylvania, Philadelphia, 19104-6323, USA
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14
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Hippler H, Krasteva N, Nasterlack S, Striebel F. Reaction of OH + NO2: High Pressure Experiments and Falloff Analysis. J Phys Chem A 2006; 110:6781-8. [PMID: 16722694 DOI: 10.1021/jp0562734] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
High pressure experiments on the OH + NO2 reaction are presented for 3 different temperatures. At 300 K, experiments in He (p = 2-500 bar) as well as in Ar (p = 2-4 bar) were performed. The rate constants obtained in Ar agree well with values which have been reported earlier by our group (Forster, R.; Frost, M.; Fulle, D.; Hamann, H. F.; Hippler, H.; Schlepegrell, A.; Troe, J. J. Chem. Phys. 1995, 103, 2949. Fulle, D.; Hamann, H. F.; Hippler, H.; Troe, J. J. Chem. Phys. 1998, 108, 5391). In contrast, the rate coefficients determined in He were found to be 15-25% lower than the values given in our earlier publications. Additionally, results for He as bath gas at elevated temperatures (T = 400 K, p = 3-150 bar; T = 600 K, p = 3-150 bar) are reported. The results obtained at elevated pressures are found to be in good agreement with existing literature data. The observed falloff behavior is analyzed in terms of the Troe formalism taking into account two reaction channels: one yielding HNO3 and one yielding HOONO. It is found that the extracted parameters are in agreement with rate constants for vibrational relaxation and isotopic scrambling as well as with experimentally determined branching ratios. Based on our analysis we determine falloff parameters to calculate the rate constant for atmospheric conditions.
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Affiliation(s)
- Horst Hippler
- Lehrstuhl für Molekulare Physikalische Chemie, Universität Karlsruhe, Kaiserstrasse 12, D-76128 Karlsruhe, Germany.
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15
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Sadanaga Y, Kondo S, Hashimoto K, Kajii Y. Measurement of the rate coefficient for the OH+NO2 reaction under the atmospheric pressure: Its humidity dependence. Chem Phys Lett 2006. [DOI: 10.1016/j.cplett.2005.12.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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16
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Butkovskaya NI, Kukui A, Pouvesle N, Le Bras G. Formation of Nitric Acid in the Gas-Phase HO2 + NO Reaction: Effects of Temperature and Water Vapor. J Phys Chem A 2005; 109:6509-20. [PMID: 16833996 DOI: 10.1021/jp051534v] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A high-pressure turbulent flow reactor coupled with a chemical ionization mass spectrometer was used to investigate the minor channel (1b) producing nitric acid, HNO3, in the HO2 + NO reaction for which only one channel (1a) is known so far: HO2 + NO --> OH + NO2 (1a), HO2 + NO --> HNO3 (1b). The reaction has been investigated in the temperature range 223-298 K at a pressure of 200 Torr of N2 carrier gas. The influence of water vapor has been studied at 298 K. The branching ratio, k1b/k1a, was found to increase from (0.18(+0.04/-0.06))% at 298 K to (0.87(+0.05/-0.08))% at 223 K, corresponding to k1b = (1.6 +/- 0.5) x 10(-14) and (10.4 +/- 1.7) x 10(-14) cm3 molecule(-1) s(-1), respectively at 298 and 223 K. The data could be fitted by the Arrhenius expression k1b = 6.4 x 10(-17) exp((1644 +/- 76)/T) cm3 molecule(-1) s(-1) at T = 223-298 K. The yield of HNO3 was found to increase in the presence of water vapor (by 90% at about 3 Torr of H2O). Implications of the obtained results for atmospheric radicals chemistry and chemical amplifiers used to measure peroxy radicals are discussed. The results show in particular that reaction 1b can be a significant loss process for the HO(x) (OH, HO2) radicals in the upper troposphere.
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Affiliation(s)
- N I Butkovskaya
- CNRS, Laboratoire de Combustion et Systèmes Réactifs, 1C Av. de la Recherche Scientifique, 45071 Orléans Cedex 2, France
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17
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Abstract
Using higher levels of wave-function-based electronic structure theory than previously applied, as well as density functional theory (B-LYP and B3-LYP functionals), all theoretical models conclude that three ONOOH conformers are stationary point minima, in disagreement with some of the previous studies that we survey. In order of increasing energy, these are the cis-cis, cis-perp, and trans-perp conformers. Basis sets including diffuse functions seem to be needed to obtain a qualitatively correct representation of the internal rotation potential energy surface at higher levels of theory. Internal rotation about the peroxide bond involving the cis-cis, cis-gauche transition structure (TS), cis-perp, and cis-trans TS conformers is studied in detail. To help ascertain the relative stability of the cis-perp conformer, multireference configuration interaction energy calculations are carried out, and rule of thumb estimates of multireference character in the ground-state wave functions of the ONOOH conformers are considered. CCSD(T)/aug-cc-pVTZ physical properties (geometries, rotational constants, electric dipole moments, harmonic vibrational frequencies, and infrared intensities) are compared with the analogous experimental data wherever possible, and also with density functional theory. Where such experimental data are nonexistent, the CCSD(T) and B3-LYP results are useful representations. For example, the electric dipole moment |mu(e)| of the cis-cis conformer is predicted to be 0.97+/-0.03 D. CCSD(T) energies, extrapolated to the aug-cc-pVNZ limit, are employed in isodesmic reaction schemes to derive zero Kelvin heats of formation and bond dissociation energies of the ONOOH stationary point minima. In agreement with recent gas-phase experiments, the peroxide bond dissociation energies of the cis-cis and trans-perp conformers are calculated as 19.3+/-0.4 and 16.0+/-0.4 kcalmol, respectively. The lowest energy cis-cis conformer is less stable than nitric acid by 28.1+/-0.4 kcalmol at 0 K.
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Affiliation(s)
- Mark P McGrath
- Department of Chemistry, University of California, Irvine, CA 92697, USA.
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18
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Goldstein S, Lind J, Merényi G. Chemistry of Peroxynitrites as Compared to Peroxynitrates. Chem Rev 2005; 105:2457-70. [PMID: 15941219 DOI: 10.1021/cr0307087] [Citation(s) in RCA: 241] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sara Goldstein
- Department of Physical Chemistry, The Hebrew University of Jerusalem, Israel.
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19
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Matthews J, Sinha A. State-resolved unimolecular dissociation ofcis-cisHOONO: Product state distributions and action spectrum in the 2νOH band region. J Chem Phys 2005; 122:104313. [PMID: 15836321 DOI: 10.1063/1.1858437] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Nascent OH fragment product state distributions arising from unimolecular dissociation of room temperature HOONO, initiated by excitation in the region of the 2nu(OH) band, are probed using laser-induced fluorescence at sub-Doppler resolution. Phase-space simulations of the measured OH rotational distributions are consistent with the dissociation dynamics being statistical and confirm that all major features in the room temperature action spectrum belong to the cis-cis conformer. The phase-space simulations also allow us to estimate the HO-ONO bond dissociation energy of cis-cis HOONO to be D(0)=19.9+/-0.5 kcal/mol, which when combined with the known heat-of-formation data for the OH and NO(2) fragments gives DeltaH(f) (0)(cis-cis HOONO)=-2.5 kcal/mol. In addition to fragment energy release, spectral features in the cis-cis HOONO action spectrum are examined with respect to their shifts upon (15)N isotope substitution and through ab initio spectral simulation using a two-dimensional dipole surface that takes into account the influence of HOON torsional motion on the OH stretching overtone. The two-dimensional spectral simulations, using CCSD(T)/cc-pVTZ dipole surface, qualitatively reproduces features appearing in the action spectrum and suggest that the strong broad feature occurring approximately 570 cm(-1) to the blue of the cis-cis HOONO 2nu(OH) peak, likely involve excitation of HOON-torsion/OH-stretch combination bands originating from thermally populated excited torsional states. A closer examination of the predictions of the two-dimensional model with experiments also reveals its limitations and suggests that a more elaborate treatment, one which includes several additional modes, will likely be required in order to fully explain the room temperature action spectrum. Ab initio calculations of the HOON torsional potential at the CCSD(T)/cc-pVTZ level of theory are also presented and confirm that cis-perp configuration does not correspond to a bound localized minimum on the HOONO potential energy surface.
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Affiliation(s)
- Jamie Matthews
- Department of Chemistry and Biochemistry, University of California-San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0314, USA
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20
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Konen IM, Pollack IB, Li EXJ, Lester MI, Varner ME, Stanton JF. Infrared overtone spectroscopy and unimolecular decay dynamics of peroxynitrous acid. J Chem Phys 2005; 122:094320. [PMID: 15836141 DOI: 10.1063/1.1854094] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Peroxynitrous acid (HOONO) is generated in a pulsed supersonic expansion through recombination of photolytically generated OH and NO(2) radicals. A rotationally resolved infrared action spectrum of HOONO is obtained in the OH overtone region at 6971.351(4) cm(-1) (origin), providing definitive spectroscopic identification of the trans-perp (tp) conformer of HOONO. Analysis of the rotational band structure yields rotational constants for the near prolate asymmetric top, the ratio of the a-type to c-type components of the transition dipole moment for the hybrid band, and a homogeneous linewidth arising from intramolecular vibrational energy redistribution and/or dissociation. The quantum state distribution of the OH (nu=0,J(OH)) products from dissociation is well characterized by a microcanonical statistical distribution constrained only by the energy available to products, 1304+/-38 cm(-1). This yields a 5667+/-38 cm(-1) [16.2(1) kcal mol(-1)] binding energy for tp-HOONO. An equivalent available energy and corresponding binding energy are obtained from the highest observed OH product state. Complementary high level ab initio calculations are carried out in conjunction with second-order vibrational perturbation theory to predict the spectroscopic observables associated with the OH overtone transition of tp-HOONO including its vibrational frequency, rotational constants, and transition dipole moment. The same approach is used to compute frequencies and intensities of multiple quantum transitions that aid in the assignment of weaker features observed in the OH overtone region, in particular, a combination band of tp-HOONO involving the HOON torsional mode.
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Affiliation(s)
- Ian M Konen
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, USA
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21
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D'Ottone L, Bauer D, Campuzano-Jost P, Fardy M, Hynes AJ. Kinetic and mechanistic studies of the recombination of OH with NO2: Vibrational deactivation, isotopic scrambling and product isomer branching ratios. Faraday Discuss 2005; 130:111-23; discussion 125-51, 519-24. [PMID: 16161781 DOI: 10.1039/b417458p] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The kinetics and mechanism of the three-body recombination of OH with NO2 were studied using a pulsed laser photolysis pulsed laser induced fluorescence technique. The rate coefficients for deactivation of vibrationally excited OH (v = 1-5) by NO2 were found to be independent of vibrational level with a value of (6.4 +/- 0.3) x 10(-11) cm3 molecule s (-1) at 298 K. The rate coefficient for reaction of 18OH with NO2 was measured and found to be much faster than for unlabeled OH with a "zero pressure" rate of 1 x 10(-11) cm3 molecule(-1) s(-1) at 298 K and 273 K. Observation of temporal profiles of 16OH and 18OH suggest that isotopic scrambling in the initially formed [H18ON16O2] complex is complete on the microsecond time scale of our experiments. The rate coefficient for reaction of unlabeled OH with NO2 was measured at 413 K in 400 Torr of He. Biexponential temporal profiles were obtained and are consistent with a 10 +/- 3% yield of the weakly bound HOONO isomer.
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Affiliation(s)
- Luca D'Ottone
- University of Miami, Rosenstiel School of Marine and Atmospheric Science, Division of Marine and Atmospheric Chemistry, 4600 Rickenbacker Causeway, Miami FL 33149, USA
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22
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Santiano RL, Francisco JS. Protonation study of peroxynitric acid and peroxynitrous acid. J Chem Phys 2004; 121:9498-509. [PMID: 15538871 DOI: 10.1063/1.1784779] [Citation(s) in RCA: 2] [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 equilibrium structures and harmonic vibrational frequencies of peroxynitric acid (HOONO(2)) and seven structures of protonated peroxynitric acid, along with peroxynitrous acid (HOONO) and its 12 protonated peroxynitrous acid structures, have been investigated using several ab initio and density functional methods. The ab initio methods include second-order Moller-Plesset perturbation theory, quadratic configuration interaction, including single and double excitations theory (QCISD), and the QCISD(T) methods, which incorporate a perturbational estimate of the effects of connected triple excitation. The Becke three-parameter hybrid functional combined with Lee, Yang, and Parr correlation function is the density functional method used. The lowest energy form of protonated peroxynitric acid is a complex between H(2)O(2) and NO(+) rather than between H(2)O and NO(2) (+). For peroxynitrous acid, a complex between H(2)O(2) and NO(2) (+) is found to be the lowest energy structure. The ab initio proton affinity (PA) of HOONO and HOONO(2) is predicted to be 182.1 and 175.1 kcal mol(-1), respectively, at the QCISD(T)/6-311++G(3df,3pd) level of theory. The results are contrasted with an earlier study on nitrous acid, and is shown that peroxynitric acid and peroxynitrous acid have a smaller PA than nitrous acid.
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Affiliation(s)
- Randy L Santiano
- Department of Chemistry, and Department of Earth and Atmospheric Sciences, Purdue University, West Lafayette, Indiana 47907-1393, USA
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23
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Fry JL, Nizkorodov SA, Okumura M, Roehl CM, Francisco JS, Wennberg PO. Cis-cis and trans-perp HOONO: Action spectroscopy and isomerization kinetics. J Chem Phys 2004; 121:1432-48. [PMID: 15260688 DOI: 10.1063/1.1760714] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
The weakly bound HOONO product of the OH+NO2+M reaction is studied using the vibrational predissociation that follows excitation of the first OH overtone (2nu1). We observe formation of both cis-cis and trans-perp conformers of HOONO. The trans-perp HOONO 2nu1 band is observed under thermal (223-238 K) conditions at 6971 cm(-1). We assign the previously published (warmer temperature) HOONO spectrum to the 2nu1 band at 6365 cm(-1) and 2nu1-containing combination bands of the cis-cis conformer of HOONO. The band shape of the trans-perp HOONO spectrum is in excellent agreement with the predicted rotational contour based on previous experimental and theoretical results, but the apparent origin of the cis-cis HOONO spectrum at 6365 cm(-1) is featureless and significantly broader, suggesting more rapid intramolecular vibrational redistribution or predissociation in the latter isomer. The thermally less stable trans-perp HOONO isomerizes rapidly to cis-cis HOONO with an experimentally determined lifetime of 39 ms at 233 K at 13 hPa (in a buffer gas of predominantly Ar). The temperature dependence of the trans-perp HOONO lifetime in the range 223-238 K yields an isomerization barrier of 33+/-12 kJ/mol. New ab initio calculations of the structure and vibrational mode frequencies of the transition state perp-perp HOONO are performed using the coupled cluster singles and doubles with perturbative triples [CCSD(T)] model, using a correlation consistent polarized triple zeta basis set (cc-pVTZ). The energetics of cis-cis, trans-perp, and perp-perp HOONO are also calculated at this level [CCSD(T)/cc-pVTZ] and with a quadruple zeta basis set using the structure determined at the triple zeta basis set [CCSD(T)/cc-pVQZ//CCSD(T)/cc-pVTZ]. These calculations predict that the anti form of perp-perp HOONO has an energy of DeltaE0=42.4 kJ/mol above trans-perp HOONO, corresponding to an activation enthalpy of DeltaH298 (double dagger 0)=41.1 kJ/mol. These results are in good agreement with statistical simulations based on a model developed by Golden, Barker, and Lohr. The simulated isomerization rates match the observed decay rates when modeled with a trans-perp to cis-cis HOONO isomerization barrier of 40.8 kJ/mol and a strong collision model. The quantum yield of cis-cis HOONO dissociation to OH and NO2 is also calculated as a function of photon excitation energy in the range 3500-7500 cm(-1), assuming D0=83 kJ/mol. The quantum yield is predicted to vary from 0.15 to 1 over the observed spectrum at 298 K, leading to band intensities in the action spectrum that are highly temperature dependent; however, the observed relative band strengths in the cis-cis HOONO spectrum do not change substantially with temperature over the range 193-273 K. Semiempirical calculations of the oscillator strengths for 2nu1(cis-cis HOONO) and 2nu1(trans-perp HOONO) are performed using (1) a one-dimensional anharmonic model and (2) a Morse oscillator model for the OH stretch, and ab initio dipole moment functions calculated using Becke, Lee, Yang, and Parr density functional theory (B3LYP), Møller-Plesset pertubation theory truncated at the second and third order (MP2 and MP3), and quadratic configuration interaction theory using single and double excitations (QCISD). The QCISD level calculated ratio of 2nu1 oscillator strengths of trans-perp to cis-cis HOONO is 3.7:1. The observed intensities indicate that the concentration of trans-perp HOONO early in the OH+NO2 reaction is significantly greater than predicted by a Boltzmann distribution, consistent with statistical predictions of high initial yields of trans-perp HOONO from the OH+NO2+M reaction. In the atmosphere, trans-perp HOONO will isomerize nearly instantaneously to cis-cis HOONO. Loss of HOONO via photodissociation in the near-IR limits the lifetime of cis-cis HOONO during daylight to less than 45 h, other loss mechanisms will reduce the lifetime further.
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Affiliation(s)
- Juliane L Fry
- Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, California 91125, USA.
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24
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Matthews J, Sinha A, Francisco JS. Relative vibrational overtone intensity of cis–cis and trans–perp peroxynitrous acid. J Chem Phys 2004; 120:10543-53. [PMID: 15268081 DOI: 10.1063/1.1738105] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The vibrational overtone spectrum of HOONO is examined in the region of the 2 nu(OH) and 3 nu(OH) bands using action spectroscopy in conjunction with ab initio intensity calculations. The present measurements indicate that the oscillator strength associated with the higher energy trans-perp conformer of HOONO is stronger relative to the lower energy cis-cis conformer for both these vibrational overtone levels. Ab initio intensity calculations carried out at the QCISD level of theory suggest that this disparity in oscillator strength apparently arises from differences in the second derivative of the transition dipole moment function of the two isomers. The calculations indicate that the oscillator strength for the trans-perp isomer is approximately 5.4 times larger than that of the cis-cis isomer for the 2 nu(OH) band and approximately 2 times larger for 3 nu(OH) band. The band positions and intensities predicted by the calculations are used to aid in the assignment of features in the experimental action spectra associated with the OH stretching overtones of HOONO. The observed relative intensities in the experimental action spectra when normalized to the calculated oscillator strengths appears to suggest that the concentration of the higher energy trans-perp isomer is comparable to the concentration of the cis-cis isomer in these room temperature experiments.
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Affiliation(s)
- Jamie Matthews
- Department of Chemistry and Biochemistry, University of California-San Diego, La Jolla, California 92093-0314, USA
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25
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Abstract
The pure rotational spectrum of cis-cis peroxynitrous acid, HOONO, has been observed. Over 220 transitions, sampling states up to J'=67 and Ka'=31, have been fitted with an rms uncertainty of 48.4 kHz. The experimentally determined rotational constants agree well with ab initio values for the cis-cis conformer, a five-membered ring formed by intramolecular hydrogen bonding. The small, positive inertial defect Delta=0.075667(60) amu A2 and lack of any observable torsional splittings in the spectrum indicate that cis-cis HOONO exists in a well-defined planar structure at room temperature.
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Affiliation(s)
- Brian J Drouin
- California Institute of Technology, Jet Propulsion Laboratory, Pasadena, California 91109, USA
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26
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Zhu RS, Lin MC. Ab initio study of the HO2+NO reaction: Prediction of the total rate constant and product branching ratios for the forward and reverse processes. J Chem Phys 2003. [DOI: 10.1063/1.1619373] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
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27
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Cohen RC, Murphy JG. Photochemistry of NO2 in Earth's Stratosphere: Constraints from Observations. Chem Rev 2003; 103:4985-98. [PMID: 14664640 DOI: 10.1021/cr020647x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ronald C Cohen
- Department of Chemistry, University of California, Berkeley, CA 94720-1460, USA
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28
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Pollack IB, Konen IM, Li EXJ, Lester MI. Spectroscopic characterization of HOONO and its binding energy via infrared action spectroscopy. J Chem Phys 2003. [DOI: 10.1063/1.1624246] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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29
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Golden DM, Barker JR, Lohr LL. Master Equation Models for the Pressure- and Temperature-Dependent Reactions HO + NO2 → HONO2 and HO + NO2 → HOONO. J Phys Chem A 2003. [DOI: 10.1021/jp0353183] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- David M. Golden
- Department of Mechanical Engineering, Stanford University, Stanford, California 94305, Department of Atmospheric, Oceanic and Space Sciences, University of Michigan, Ann Arbor, Michigan 48109-2143, and Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055
| | - John R. Barker
- Department of Mechanical Engineering, Stanford University, Stanford, California 94305, Department of Atmospheric, Oceanic and Space Sciences, University of Michigan, Ann Arbor, Michigan 48109-2143, and Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055
| | - Lawrence L. Lohr
- Department of Mechanical Engineering, Stanford University, Stanford, California 94305, Department of Atmospheric, Oceanic and Space Sciences, University of Michigan, Ann Arbor, Michigan 48109-2143, and Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055
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30
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Cox RA. Chemical Kinetics and Atmospheric Chemistry: Role of Data Evaluation. Chem Rev 2003; 103:4533-48. [PMID: 14664621 DOI: 10.1021/cr020648p] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Richard Anthony Cox
- Center for Atmospheric Science, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, U.K
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31
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Barker JR, Golden DM. Master Equation Analysis of Pressure-Dependent Atmospheric Reactions. Chem Rev 2003; 103:4577-92. [PMID: 14664624 DOI: 10.1021/cr020655d] [Citation(s) in RCA: 87] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- John R Barker
- Department of Atmospheric, Oceanic and Space Sciences and Department of Chemistry, University of Michigan, Ann Arbor, MI 48109-2143, USA.
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32
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Troe J. Toward a Quantitative Analysis of Association Reactions in the Atmosphere. Chem Rev 2003; 103:4565-76. [PMID: 14664623 DOI: 10.1021/cr020514b] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Jürgen Troe
- Institut für Physikalische Chemie, Universität Göttingen, Tammannstrasse 6, D-37077 Göttingen, Germany
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33
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Barker JR, Lohr LL, Shroll RM, Reading S. Modeling the Organic Nitrate Yields in the Reaction of Alkyl Peroxy Radicals with Nitric Oxide. 2. Reaction Simulations. J Phys Chem A 2003. [DOI: 10.1021/jp034638j] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- John R. Barker
- Department of Atmospheric, Oceanic, and Space Sciences, University of Michigan, Ann Arbor, Michigan 48109-2143, and Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055
| | - Lawrence L. Lohr
- Department of Atmospheric, Oceanic, and Space Sciences, University of Michigan, Ann Arbor, Michigan 48109-2143, and Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055
| | - Robert M. Shroll
- Department of Atmospheric, Oceanic, and Space Sciences, University of Michigan, Ann Arbor, Michigan 48109-2143, and Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055
| | - Susan Reading
- Department of Atmospheric, Oceanic, and Space Sciences, University of Michigan, Ann Arbor, Michigan 48109-2143, and Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055
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34
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Affiliation(s)
- Ian W M Smith
- School of Chemical Sciences, The University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom.
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35
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Bean BD, Mollner AK, Nizkorodov SA, Nair G, Okumura M, Sander SP, Peterson KA, Francisco JS. Cavity Ringdown Spectroscopy of cis-cis HOONO and the HOONO/HONO2 Branching Ratio in the Reaction OH + NO2 + M. J Phys Chem A 2003. [DOI: 10.1021/jp034407c] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Brian D. Bean
- Arthur Amos Noyes Laboratory of Chemical Physics, MC 127-72, California Institute of Technology, Pasadena, California 91125
| | - Andrew K. Mollner
- Arthur Amos Noyes Laboratory of Chemical Physics, MC 127-72, California Institute of Technology, Pasadena, California 91125
| | - Sergey A. Nizkorodov
- Arthur Amos Noyes Laboratory of Chemical Physics, MC 127-72, California Institute of Technology, Pasadena, California 91125
| | - Gautham Nair
- Arthur Amos Noyes Laboratory of Chemical Physics, MC 127-72, California Institute of Technology, Pasadena, California 91125
| | - Mitchio Okumura
- Arthur Amos Noyes Laboratory of Chemical Physics, MC 127-72, California Institute of Technology, Pasadena, California 91125
| | - Stanley P. Sander
- NASA Jet Propulsion Laboratory, MC 183-901, California Institute of Technology, Pasadena, California 91109
| | - Kirk A. Peterson
- Department of Chemistry, Washington State University, Pullman, Washington 99164-4630
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36
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37
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D'Ottone L, Campuzano-Jost P, Bauer D, Hynes AJ. A Pulsed Laser Photolysis−Pulsed Laser Induced Fluorescence Study of the Kinetics of the Gas-Phase Reaction of OH with NO2. J Phys Chem A 2001. [DOI: 10.1021/jp012250n] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- L. D'Ottone
- Division of Marine and Atmospheric Chemistry, Rosenstiel School of Marine and Atmospheric Science, University of Miami, 4600 Rickenbacker Causeway, Miami, Florida 33149
| | - P. Campuzano-Jost
- Division of Marine and Atmospheric Chemistry, Rosenstiel School of Marine and Atmospheric Science, University of Miami, 4600 Rickenbacker Causeway, Miami, Florida 33149
| | - D. Bauer
- Division of Marine and Atmospheric Chemistry, Rosenstiel School of Marine and Atmospheric Science, University of Miami, 4600 Rickenbacker Causeway, Miami, Florida 33149
| | - A. J. Hynes
- Division of Marine and Atmospheric Chemistry, Rosenstiel School of Marine and Atmospheric Science, University of Miami, 4600 Rickenbacker Causeway, Miami, Florida 33149
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38
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Dransfield TJ, Donahue NM, Anderson JG. High-Pressure Flow Reactor Product Study of the Reactions of HOx+ NO2: The Role of Vibrationally Excited Intermediates†. J Phys Chem A 2001. [DOI: 10.1021/jp002391+] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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39
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Perkins KK, Hanisco TF, Cohen RC, Koch LC, Stimpfle RM, Voss PB, Bonne GP, Lanzendorf EJ, Anderson JG, Wennberg PO, Gao RS, Del Negro LA, Salawitch RJ, McElroy CT, Hintsa EJ, Loewenstein M, Bui TP. The NOx−HNO3 System in the Lower Stratosphere: Insights from In Situ Measurements and Implications of the JHNO3−[OH] Relationship. J Phys Chem A 2001. [DOI: 10.1021/jp002519n] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- K. K. Perkins
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138; Departments of Chemistry and of Geology and Geophysics, University of California, Berkeley, California 94720; Divisions of Engineering and of Geological and Planetary Science, California Institute of Technology, Pasadena, California 91125; NOAA Aeronomy Laboratory, Boulder, Colorado 80303; NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109; Meteorological Service
| | - T. F. Hanisco
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138; Departments of Chemistry and of Geology and Geophysics, University of California, Berkeley, California 94720; Divisions of Engineering and of Geological and Planetary Science, California Institute of Technology, Pasadena, California 91125; NOAA Aeronomy Laboratory, Boulder, Colorado 80303; NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109; Meteorological Service
| | - R. C. Cohen
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138; Departments of Chemistry and of Geology and Geophysics, University of California, Berkeley, California 94720; Divisions of Engineering and of Geological and Planetary Science, California Institute of Technology, Pasadena, California 91125; NOAA Aeronomy Laboratory, Boulder, Colorado 80303; NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109; Meteorological Service
| | - L. C. Koch
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138; Departments of Chemistry and of Geology and Geophysics, University of California, Berkeley, California 94720; Divisions of Engineering and of Geological and Planetary Science, California Institute of Technology, Pasadena, California 91125; NOAA Aeronomy Laboratory, Boulder, Colorado 80303; NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109; Meteorological Service
| | - R. M. Stimpfle
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138; Departments of Chemistry and of Geology and Geophysics, University of California, Berkeley, California 94720; Divisions of Engineering and of Geological and Planetary Science, California Institute of Technology, Pasadena, California 91125; NOAA Aeronomy Laboratory, Boulder, Colorado 80303; NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109; Meteorological Service
| | - P. B. Voss
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138; Departments of Chemistry and of Geology and Geophysics, University of California, Berkeley, California 94720; Divisions of Engineering and of Geological and Planetary Science, California Institute of Technology, Pasadena, California 91125; NOAA Aeronomy Laboratory, Boulder, Colorado 80303; NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109; Meteorological Service
| | - G. P. Bonne
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138; Departments of Chemistry and of Geology and Geophysics, University of California, Berkeley, California 94720; Divisions of Engineering and of Geological and Planetary Science, California Institute of Technology, Pasadena, California 91125; NOAA Aeronomy Laboratory, Boulder, Colorado 80303; NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109; Meteorological Service
| | - E. J. Lanzendorf
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138; Departments of Chemistry and of Geology and Geophysics, University of California, Berkeley, California 94720; Divisions of Engineering and of Geological and Planetary Science, California Institute of Technology, Pasadena, California 91125; NOAA Aeronomy Laboratory, Boulder, Colorado 80303; NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109; Meteorological Service
| | - J. G. Anderson
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138; Departments of Chemistry and of Geology and Geophysics, University of California, Berkeley, California 94720; Divisions of Engineering and of Geological and Planetary Science, California Institute of Technology, Pasadena, California 91125; NOAA Aeronomy Laboratory, Boulder, Colorado 80303; NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109; Meteorological Service
| | - P. O. Wennberg
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138; Departments of Chemistry and of Geology and Geophysics, University of California, Berkeley, California 94720; Divisions of Engineering and of Geological and Planetary Science, California Institute of Technology, Pasadena, California 91125; NOAA Aeronomy Laboratory, Boulder, Colorado 80303; NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109; Meteorological Service
| | - R. S. Gao
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138; Departments of Chemistry and of Geology and Geophysics, University of California, Berkeley, California 94720; Divisions of Engineering and of Geological and Planetary Science, California Institute of Technology, Pasadena, California 91125; NOAA Aeronomy Laboratory, Boulder, Colorado 80303; NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109; Meteorological Service
| | - L. A. Del Negro
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138; Departments of Chemistry and of Geology and Geophysics, University of California, Berkeley, California 94720; Divisions of Engineering and of Geological and Planetary Science, California Institute of Technology, Pasadena, California 91125; NOAA Aeronomy Laboratory, Boulder, Colorado 80303; NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109; Meteorological Service
| | - R. J. Salawitch
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138; Departments of Chemistry and of Geology and Geophysics, University of California, Berkeley, California 94720; Divisions of Engineering and of Geological and Planetary Science, California Institute of Technology, Pasadena, California 91125; NOAA Aeronomy Laboratory, Boulder, Colorado 80303; NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109; Meteorological Service
| | - C. T. McElroy
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138; Departments of Chemistry and of Geology and Geophysics, University of California, Berkeley, California 94720; Divisions of Engineering and of Geological and Planetary Science, California Institute of Technology, Pasadena, California 91125; NOAA Aeronomy Laboratory, Boulder, Colorado 80303; NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109; Meteorological Service
| | - E. J. Hintsa
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138; Departments of Chemistry and of Geology and Geophysics, University of California, Berkeley, California 94720; Divisions of Engineering and of Geological and Planetary Science, California Institute of Technology, Pasadena, California 91125; NOAA Aeronomy Laboratory, Boulder, Colorado 80303; NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109; Meteorological Service
| | - M. Loewenstein
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138; Departments of Chemistry and of Geology and Geophysics, University of California, Berkeley, California 94720; Divisions of Engineering and of Geological and Planetary Science, California Institute of Technology, Pasadena, California 91125; NOAA Aeronomy Laboratory, Boulder, Colorado 80303; NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109; Meteorological Service
| | - T. P. Bui
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138; Departments of Chemistry and of Geology and Geophysics, University of California, Berkeley, California 94720; Divisions of Engineering and of Geological and Planetary Science, California Institute of Technology, Pasadena, California 91125; NOAA Aeronomy Laboratory, Boulder, Colorado 80303; NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109; Meteorological Service
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40
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Troe J. Analysis of the temperature and pressure dependence of the reaction HO + NO2 + M ? HONO2 + M. INT J CHEM KINET 2001. [DOI: 10.1002/kin.10019] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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41
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Donahue NM, Mohrschladt R, Dransfield TJ, Anderson JG, Dubey MK. Constraining the Mechanism of OH + NO2 Using Isotopically Labeled Reactants: Experimental Evidence for HOONO Formation. J Phys Chem A 2000. [DOI: 10.1021/jp0035582] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Neil M. Donahue
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138
| | - Ralf Mohrschladt
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138
| | - Timothy J. Dransfield
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138
| | - James G. Anderson
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138
| | - Manvendra K. Dubey
- Atmospheric and Climate Sciences, Los Alamos National Labortaory, Los Alamos, New Mexico 87545
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42
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Smith GP, Dubey MK, Kinnison DE, Connell PS. Assessing Effects of Rate Parameter Changes on Ozone Models Using Sensitivity Analysis. J Phys Chem A 2000. [DOI: 10.1021/jp002329c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gregory P. Smith
- Molecular Physics Laboratory, SRI International, Menlo Park, California 94025
| | - Manvendra K. Dubey
- Atmospheric and Climate Sciences, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
| | | | - Peter S. Connell
- Lawrence Livermore National Laboratory, Livermore, California 94550
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43
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Li Y, Francisco JS. High levelab initiomolecular orbital theory study of the structure, vibrational spectrum, stability, and low-lying excited states of HOONO. J Chem Phys 2000. [DOI: 10.1063/1.1316010] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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