Kinetic mechanisms in nitrogen-chlorine radical systems. Part 1.—The formation and detection of the NCl2and N3free radicals using time-resolved absorption spectrophotometry
- 1 January 1969
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Transactions of the Faraday Society
- Vol. 65, 2994-3004
- https://doi.org/10.1039/tf9696502994
Abstract
The ultra-violet, infra-red and mass spectra of gaseous NCl3, N3Cl and N3Br are reported. The use of an ultra-violet absorption spectrophotometric system for the measurement of small optical densities in a low-pressure discharge-flow apparatus is described. The radicals NCl2(from the reaction Cl + NCl3) and N3(from the reaction Cl + N3Cl) were detected by means of their ultra-violet absorption spectra, using this system. The rate of removal of NCl2 radicals at 298 K and from 1–3 torr total pressure was second-order in [NCl2] and independent of total pressure, and a mean value for the second-order rate constant, k2=(5.5 ± 0.4)× 1011 cm3 mol–1 s–1, was found under these conditions.Keywords
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