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Aschmann SM, Arey J, Atkinson R. Study of the Atmospheric Chemistry of 2-Formylcinnamaldehyde. J Phys Chem A 2013; 117:7876-86. [DOI: 10.1021/jp404994w] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Sara M. Aschmann
- Air Pollution Research Center, University of California Riverside, California 92521, United States
| | - Janet Arey
- Air Pollution Research Center, University of California Riverside, California 92521, United States
| | - Roger Atkinson
- Air Pollution Research Center, University of California Riverside, California 92521, United States
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Sandhiya L, Kolandaivel P, Senthilkumar K. Reaction mechanism and kinetics of the atmospheric oxidation of 1,4-thioxane by NO3 — A theoretical study. CAN J CHEM 2012. [DOI: 10.1139/v2012-010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Volatile organic compounds (VOCs) are emitted as pollutants into the atmosphere from many natural and artificial sources. The oxidation of VOCs by atmospheric species plays a key role in the degradation of VOCs. In the present investigation, the atmospheric degradation of a cyclic organosulfur compound, 1,4-thioxane, by an NO3• radical is studied. Pathways for the reaction of 1,4-thioxane with the NO3• radical were modeled through electronic structure calculations using density functional theory methods B3LYP, M06-2X, and MP2 with the 6–31G(d,p) basis set. The NO3•-initiated reaction of 1,4-thioxane was found to proceed in three ways: by single-hydrogen atom abstraction, by direct transfer of the O atom of NO3• to the S atom moiety of 1,4-thioxane, or by two-hydrogen atom transfer reactions leading to the formation of a peroxy radical intermediate, which further undergoes secondary reactions with other atmospheric species. Structures, energies, and vibrational frequencies obtained from M06-2X/6–31G(d,p) electronic structure calculations were subsequently used to perform canonical variational transition-state theory calculations to determine the rate constants over the temperature range of 278–350 K and to study the lifetime of 1,4-thioxane in the atmosphere. The rate constant calculated for the reaction of 1,4-thioxane with the NO3• radical is in good agreement with the available experimental data.
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Affiliation(s)
- L. Sandhiya
- Department of Physics, Bharathiar University, Coimbatore - 641 046, India
| | - P. Kolandaivel
- Department of Physics, Bharathiar University, Coimbatore - 641 046, India
| | - K. Senthilkumar
- Department of Physics, Bharathiar University, Coimbatore - 641 046, India
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Theoretical studies on the reaction mechanism and kinetics of the atmospheric reactions of 1,4-thioxane with OH radical. Struct Chem 2012. [DOI: 10.1007/s11224-012-9955-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Sandhiya L, Kolandaivel P, Senthilkumar K. Mechanism and kinetics of the reaction of 1,4-thioxane with O3 in the atmosphere – A theoretical study. Chem Phys Lett 2012. [DOI: 10.1016/j.cplett.2011.12.070] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Mason SA, Arey J, Atkinson R. Rate Constants for the Gas-Phase Reactions of NO3 Radicals and O3 with C6−C14 1-Alkenes and 2-Methyl-1-alkenes at 296 ± 2 K. J Phys Chem A 2009; 113:5649-56. [DOI: 10.1021/jp9014614] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Sherri A. Mason
- Air Pollution Research Center, University of California, Riverside, California 92521
| | - Janet Arey
- Air Pollution Research Center, University of California, Riverside, California 92521
| | - Roger Atkinson
- Air Pollution Research Center, University of California, Riverside, California 92521
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