Reaction kinetics of the CN radical with methyl bromide
| Autor: | John F. Hershberger, Michael Hodny |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010304 chemical physics
Absorption spectroscopy Kinetics General Physics and Astronomy 010402 general chemistry Hydrogen atom abstraction Photochemistry 01 natural sciences 0104 chemical sciences Chemical kinetics chemistry.chemical_compound Reaction rate constant chemistry Bromide Ab initio quantum chemistry methods Yield (chemistry) 0103 physical sciences Physical chemistry Physical and Theoretical Chemistry |
| Zdroj: | Chemical Physics Letters. 645:88-91 |
| ISSN: | 0009-2614 |
| Popis: | The kinetics of the CN + CH 3 Br reaction were studied using transient infrared laser absorption spectroscopy to detect CN reactants and HCN products. This reaction has a rate constant of k = (2.20 ± 0.6) × 10 −12 exp (453 ± 98/ T ) cm 3 molecule −1 s −1 over the range 298–523 K. Hydrogen abstraction to produce HCN + CH 2 Br is only a minor reaction product, with a branching fraction of 0.12 ± 0.02. Other product channels, including BrCN + CH 3 , CH 2 CN + HBr, CH 3 CN + Br are likely. An upper limit of 0.01 was established for the HBr yield. These results are in qualitative agreement with recent ab initio calculations. |
| Databáze: | OpenAIRE |
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