The chloromethoxy radical: kinetics of the reaction with O 2 and the unimolecular elimination of HCl at 306 K
The gas-phase kinetics of the CH 2ClO radical, formed by flash photolysis of Cl 2 in CH 3Cl/O 2/N 2 mixtures, was investigated at 306 K and at total pressures from 5 to 35 Torr by time-resolved mass spectrometry. Reaction of CH 2ClO with O 2 to form HC(O)Cl and HO 2, and unimolecular dissociation to...
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Published in | Chemical physics letters Vol. 305; no. 1; pp. 44 - 50 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
14.05.1999
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Online Access | Get full text |
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Summary: | The gas-phase kinetics of the CH
2ClO radical, formed by flash photolysis of Cl
2 in CH
3Cl/O
2/N
2 mixtures, was investigated at 306 K and at total pressures from 5 to 35 Torr by time-resolved mass spectrometry. Reaction of CH
2ClO with O
2 to form HC(O)Cl and HO
2, and unimolecular dissociation to HCl and HCO were both observed. The absolute rate coefficient for reaction of CH
2ClO with O
2 is (2.8±1.2)×10
−13 cm
3 molecule
−1 s
−1. The unimolecular dissociation is well into the fall-off, the rate coefficient increasing from 6×10
2 s
−1 to 4×10
3 s
−1 between 5 and 35 Torr. |
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ISSN: | 0009-2614 1873-4448 |
DOI: | 10.1016/S0009-2614(99)00350-4 |