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Yang L, Sonk JA, Barker JR. HO + OClO Reaction System: Featuring a Barrierless Entrance Channel with Two Transition States. J Phys Chem A 2015; 119:5723-31. [DOI: 10.1021/acs.jpca.5b03487] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lei Yang
- Department of Atmospheric,
Oceanic, and Space Sciences, University of Michigan, Ann Arbor, Michigan 48109-2143, United States
| | - Jason A. Sonk
- Department of Atmospheric,
Oceanic, and Space Sciences, University of Michigan, Ann Arbor, Michigan 48109-2143, United States
| | - John R. Barker
- Department of Atmospheric,
Oceanic, and Space Sciences, University of Michigan, Ann Arbor, Michigan 48109-2143, United States
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2
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Raghunath P, Nghia N, Lin MC. Ab Initio Chemical Kinetics of Key Processes in the Hypergolic Ignition of Hydrazine and Nitrogen Tetroxide. ADVANCES IN QUANTUM CHEMISTRY 2014. [DOI: 10.1016/b978-0-12-800345-9.00007-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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3
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Raghunath P, Lin MC. Ab initio chemical kinetics for the ClOO + NO reaction: Effects of temperature and pressure on product branching formation. J Chem Phys 2012; 137:014315. [DOI: 10.1063/1.4731883] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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4
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Zhao M, Zhao YL, Liu PJ, Chang YF, Pan XM, Su ZM, Wang RS. Quantum chemical study on the reaction mechanism of OBrO radical with OH radical. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.20040220623] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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5
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Kosmas AM, Lesar A. Computational study of the perhalogenated methyl nitrates CX3ONO2, CXxY3−xONO2(X, Y = F, Cl). Mol Phys 2008. [DOI: 10.1080/00268970802077843] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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6
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Kosmas AM. Theoretical investigation of halogen-oxygen bonding and its implications in halogen chemistry and reactivity. Bioinorg Chem Appl 2007:46393. [PMID: 17713592 PMCID: PMC1939913 DOI: 10.1155/2007/46393] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2006] [Revised: 01/18/2007] [Accepted: 03/29/2007] [Indexed: 12/03/2022] Open
Abstract
Trends in the properties of normal valent and multivalent halogen-oxygen bonding are examined for the isomers of the halogen polyoxide families of the types (YXO2) and (YXO3), Y = Cl, Br, I, H, CH3, X = Cl, Br, I. A qualitative model is formulated on the relationship between the X−O bond distance variations, the ionic character of the bonding, and the degree of halogen valence. The relative stability and enthalpy of formation of each species are also suggested to correlate with the ionic nature of the X−O bonding and the electrostatic character of the Y, YO fragments. In the model presented, halogen hypervalence is interpreted to be the result of partial p → d promotion of lone-pair valence electrons followed by the formation of two, four, or six additional pd hybrid bonds around the halogen atom.
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Affiliation(s)
- Agnie Mylona Kosmas
- Division of Physical Chemistry, Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece.
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Xu ZF, Lin MC. Computational Studies on the Kinetics and Mechanisms for NH3 Reactions with ClOx (x = 0−4) Radicals. J Phys Chem A 2007; 111:584-90. [PMID: 17249747 DOI: 10.1021/jp065397t] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Kinetics and mechanisms for NH3 reactions with ClOx (x = 0-4) radicals have been investigated at the G2M level of theory in conjunction with statistical theory calculations. The geometric parameters of the species and stationary points involved in the reactions have been optimized at the B3LYP/6-311+G(3df,2p) level of theory. Their energetics have been further refined with the G2M method. The results show that the H-abstraction process is the most favorable channel in each reaction and the barriers predicted in decreasing order are OClO > ClO > Cl > ClO3 > ClO4. All reactions were found to occur by hydrogen-bonding complexes; the rate constants for these complex metathetical processes have been calculated in the temperature range 200-2000 K by the microcanonical VTST and/or RRKM theory (for ClO4 + NH3) with Eckart tunneling and multiple reflection corrections. The predicted rate constants are in good agreement with the available experimental data.
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Affiliation(s)
- Z F Xu
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, USA
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Gierczak T, Burkholder JB, Ravishankara AR. Rate coefficients for the reaction of OH with OClO between 242 and 392 K. INT J CHEM KINET 2006. [DOI: 10.1002/kin.20158] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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9
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Plane JMC, Joseph DM, Allan BJ, Ashworth SH, Francisco JS. An Experimental and Theoretical Study of the Reactions OIO + NO and OIO + OH. J Phys Chem A 2005; 110:93-100. [PMID: 16392844 DOI: 10.1021/jp055364y] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The kinetics of the reaction OIO+NO were studied by pulsed laser photolysis/time-resolved cavity ring-down spectroscopy, yielding k(235-320 K)=7.6(+4.0)(-3.1) x 10(-13) exp[(607+/-128)/T] cm3 molecule-1 s-1. Quantum calculations on the OIO+NO potential-energy surface show that the reactants form a weakly bound OIONO intermediate, which then dissociates to the products IO+NO2. Rice-Ramsberger-Kassel-Markus (RRKM) calculations on this surface are in good accord with the experimental result. The most stable potential product, IONO2, cannot form because of the significant rearrangement of OIONO that would be required. The reaction OIO+OH was then investigated by quantum calculations of the relevant stationary points on its potential-energy surface. The very stable HOIO2 molecule can form by direct recombination, but the bimolecular reaction channels to HO2+IO and HOI+O2 are closed because of significant energy barriers. RRKM calculations of the HOIO2 recombination rate coefficient yield krec,0=1.5x10(-27) (T/300 K)(-3.93) cm6 molecule-2 s-1, krec,infinity=5.5x10(-10) exp(46/T) cm3 molecule-1 s-1, and Fc=0.30. The rate coefficients of both reactions are fast enough around 290 K and 1 atm pressure for these reactions to play a potentially important role in the gas phase and aerosol chemistry in the marine boundary layer of the atmosphere.
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Affiliation(s)
- J M C Plane
- School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UK.
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Drougas E, Jalbout AF, Kosmas AM. Quantum Mechanical Studies of CH3ClO3 Isomers and the CH3O2+ClO Reaction Pathways. J Phys Chem A 2003. [DOI: 10.1021/jp030757n] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Evangelos Drougas
- Department of Chemistry, University of Ioannina, Greece 451 10, Department of Physics, Dillard University, New Orleans, Louisiana 70112, and Department of Chemistry, The University of New Orleans, New Orleans, Louisiana 70148
| | - Abraham F. Jalbout
- Department of Chemistry, University of Ioannina, Greece 451 10, Department of Physics, Dillard University, New Orleans, Louisiana 70112, and Department of Chemistry, The University of New Orleans, New Orleans, Louisiana 70148
| | - Agnie M. Kosmas
- Department of Chemistry, University of Ioannina, Greece 451 10, Department of Physics, Dillard University, New Orleans, Louisiana 70112, and Department of Chemistry, The University of New Orleans, New Orleans, Louisiana 70148
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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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12
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Zhu RS, Lin MC. Ab initio studies of ClOx reactions. VIII. Isomerization and decomposition of ClO2 radicals and related bimolecular processes. J Chem Phys 2003. [DOI: 10.1063/1.1585027] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
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13
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Zhu RS, Lin MC. Ab initiostudies of ClOx reactions. VII. Isomers of Cl2O3 and their roles in the ClO+OClO reaction. J Chem Phys 2003. [DOI: 10.1063/1.1565315] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
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14
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Zhu RS, Lin MC. Ab Initio Studies of ClOx Radical Reactions: V. Evidence for a New Path in the Cl + ClOOCl Reaction. J Phys Chem A 2003. [DOI: 10.1021/jp0218894] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- R. S. Zhu
- Department of Chemistry, Emory University, Atlanta, Georgia 30322
| | - M. C. Lin
- Department of Chemistry, Emory University, Atlanta, Georgia 30322
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Xu ZF, Zhu RS, Lin MC. Ab Initio Studies of ClOx Reactions: VI. Theoretical Prediction of Total Rate Constant and Product Branching Probabilities for the HO2 + ClO Reaction. J Phys Chem A 2003. [DOI: 10.1021/jp0221237] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Z. F. Xu
- Department of Chemistry, Emory University, Atlanta, Georgia 30322
| | - R. S. Zhu
- Department of Chemistry, Emory University, Atlanta, Georgia 30322
| | - M. C. Lin
- Department of Chemistry, Emory University, Atlanta, Georgia 30322
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