Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9605442 | Journal of Photochemistry and Photobiology A: Chemistry | 2005 | 6 Pages |
Abstract
The reactions of HCO and DCO with NO have been measured by the laser photolysis/continuous-wave (CW) laser-induced fluorescence (LIF) method from 296 to 623 K, probing the (BË2Aâ²âXË2Aâ²) HCO (DCO) system. The HCO + NO rate coefficient is (1.81 ± 0.10) Ã 10â11 cm3 moleculeâ1 sâ1 and the DCO + NO rate coefficient is (1.61 ± 0.12) Ã 10â11 cm3 moleculeâ1 sâ1 at 296 K. Both rate coefficients decrease with increasing temperature between 296 and 623 K. The kinetic isotope effect is kH/kD = 1.12 ± 0.09 at 296 K and increases to 1.25 ± 0.15 at 623 K. The normal kinetic isotope effect supports abstraction as the principal mechanism for the reaction, in agreement with recent computational results.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Bioengineering
Authors
John D. DeSain, Leonard E. Jusinski, Craig A. Taatjes,