Reaction of excited iodine atoms with methyl iodide: rate constant determinations
Journal Article
·
· Int. J. Chem. Kinet.; (United States)
The rate constant for the reaction I(/sup 2/P/sub 1/2/) + CH/sub 3/I ..sigma.. I/sub 2/ + CH/sub 3/ has been reevaluated taking into account both collisional deactivation of excited iodine atoms and loss of I/sub 2/ by I/sub 2/ + CH/sub 3/ ..sigma.. I + CH/sub 3/I. The reevaluation is based upon data obtained from the flash photolysis of CH/sub 3/I using time-resolved mass spectrometry to measure the rate of I/sub 2/ formation. Computer simulations of the complete kinetic system and a closed-form solution of a simplified set of the differential equations yielded a value of 6(+/- 4) x 10/sup 6/ 1./mole-sec for the excited iodine atom reaction in the temperature region of 316 to 447 K. A slight temperature dependence was observed.
- Research Organization:
- Sandia Lab., Albuquerque, NM
- OSTI ID:
- 6898582
- Journal Information:
- Int. J. Chem. Kinet.; (United States), Journal Name: Int. J. Chem. Kinet.; (United States) Vol. 6; ISSN IJCKB
- Country of Publication:
- United States
- Language:
- English
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Sun Dec 31 23:00:00 EST 1978
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OSTI ID:5895990
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RATE CONSTANTS FOR COMBINATION OF IODINE ATOMS IN INERT SOLVENTS
Journal Article
·
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· Journal of the American Chemical Society (U.S.)
·
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COMPUTERIZED SIMULATION
DECOMPOSITION
ELEMENTS
ENERGY-LEVEL TRANSITIONS
EXCITATION
HALOGENATED ALIPHATIC HYDROCARBONS
HALOGENS
IODINATED ALIPHATIC HYDROCARBONS
IODINE
KINETICS
MASS SPECTROSCOPY
METHYL IODIDE
NONMETALS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC IODINE COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
REACTION KINETICS
SIMULATION
SPECTROSCOPY
TEMPERATURE DEPENDENCE
400500* -- Photochemistry
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COMPUTERIZED SIMULATION
DECOMPOSITION
ELEMENTS
ENERGY-LEVEL TRANSITIONS
EXCITATION
HALOGENATED ALIPHATIC HYDROCARBONS
HALOGENS
IODINATED ALIPHATIC HYDROCARBONS
IODINE
KINETICS
MASS SPECTROSCOPY
METHYL IODIDE
NONMETALS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC IODINE COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
REACTION KINETICS
SIMULATION
SPECTROSCOPY
TEMPERATURE DEPENDENCE