ABSOLUTE RATE COEFFICIENTS FOR THE REACTION BETWEEN NITRATE RADICALS AND SOME CYCLIC ALKENES
Journal of the Chemical Society-Faraday Transactions, 89 (16):
2977--2982 (January 1993)Abstract
Absolute rate coefficients for the reaction between NO3 and cyclopentene, cyclohexene and 1-methylcyclohexene have been determined to be (5.9 +/- 1.1) X 10(-13) (295 K), (6.3 +/- 1.3) x 10(-13) (294 K) and (1.5 +/- 0.5) x 10(-11) (293 K) (units of cm3 Molecule-1 s-1), respectively, using the fast-flow-discharge technique. The activation energies for the NO3+ cyclohexene and 1-methylcyclohexene reactions were 1 +/- 4 and 0 +/- 5 kJ mol-1. The simple cyclic alkenes react slightly faster than (Z)-but-2-ene which contains a similar active structural element. The rate coefficient for reaction with 1-methylcyclohexene is close to that for DELTA3-carene or 2-carene but significantly greater than that for alpha-pinene.