First Direct Observation of Equilibrium Involving Cl Atoms: Cl + C₂H₄ ⇔ ClCH₂CH₂ by VUV Monitoring.

ABSTRACT: The kinetics between Cl and ethylene, R1, have been determined between 298 and 822 K in time-resolved experiments, where the Cl atoms were monitored for the first time via laser-induced fluorescence at 118.877 nm. A key advantage of this method of Cl detection is that there is limited absorption of 118 nm radiation by oxygen, and we report the first Cl reactivity measurements. The kinetics of Cl + C₂H₄ at room temperature are simple association, k_1a([M]), and have been used in a master equation analysis (via the MESMER application) to show consistency with most of the literature. Between 393 and 490 K, the kinetics exhibited equilibrium behavior: Cl + C₂H₄ ⇔ Cl-C₂H₄ (k_1a([M])

SUBMITTER: Blitz MA 

PROVIDER: S-EPMC12557372 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature