Reaction of NO3 Radicals with 1,3‐Cyclohexadiene, α‐Terpinene, and α‐Phellandrene: Kinetics and Products
- 1 April 1996
- journal article
- research article
- Published by Wiley in Berichte der Bunsengesellschaft für physikalische Chemie
- Vol. 100 (4) , 462-469
- https://doi.org/10.1002/bbpc.19961000410
Abstract
The gas‐phase reaction of NO3 radicals with 1,3‐cyclohexadiene, α‐terpinene, and α‐phellandrene has been studied in a flow system at 298 K in the pressure range 8<P(mbar)2 rate constants for the primary attack of NO3 were determined with the relative rate method to be (1.08±0.02) 10−11, (1.03±0.06) 10−10, and (5.98±0.20) 10−11, respectively (unit: cm3 molecule−1 s−1).As buffer gas in the product studies served N2 or He as well as O2/N2 mixtures. In the case of 1,3‐cyclohexadiene the formation of the corresponding oxirane (7‐oxa‐bicyclo[4.1.0]hept‐2‐ene) up to a yield of 90% at P5·1015 molecule cm−3 an absorption band was detected in addition assigned to a carbonylic group. There were no indications for a reaction of O2 with the adduct radical (NO3/diene).Keywords
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