Journal of Physical Chemistry p. 4933 - 4936 (1983)
Update date:2022-08-16
Topics:
Tabares, F. L.
Urena, A. Gonzalez
Reactive mixtures O(3P) plus pyridine were produced and studied in our fast-flow discharge apparatus.Several chemiluminescent radiations were identified as the electronic transitions CH(A2Δ-X2Π), OH(AΣ+-X2Π), and CN(B2Σ+-X2Σ+) and their band intensities recorded as a function of the pyridine concentration.By using pseudo-first-order conditions we measured the rate constant for the initial reaction via the chemiluminescent detection of oxygen atoms with NO.Over the temperature range of 323-473 K the measured rate constants are well represented by the Arrhenius expression: k/(cm3 mol-1 s-1) = <(2.9 +/- 0.3) X 1012> exp<-(2500 +/- 300)/RT>.A comparison with the analogous O + benzene reaction is made including some comments on the electrophilic attack of both aromatic rings by the oxygen atom.
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