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1 December 2004 The Phase-dependent Photochemical Reaction Dynamics of Halooxides and Nitrosyl Halides
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Abstract

Recent progress in understanding the phase-dependent reactivity of halooxides and nitrosyl halides is outlined. Halooxide reactivity is represented by the photochemistry of chlorine dioxide (OClO) and dichlorine monoxide (ClOCl). The gas phase photochemical dynamics of OClO are contrasted with the dynamics in condensed environments. The role of excited-state symmetry in defining the reaction dynamics and the observation of photoisomerization resulting in the production of ClOO are discussed. The current understanding of the excited-state reaction dynamics of ClOCl and evidence for photoisomerization of this species resulting in the production of ClClO are outlined. Finally, the photochemical reaction dynamics of the nitrosyl halide ClNO are presented. The main difference between the gas and condensed phase reaction dynamics of this species is that whereas photodissociation to form Cl and NO dominates the gas phase reaction dynamics, photoisomerization resulting in ClON production occurs to an appreciable extent in condensed environments. The observation of photoisomerization for OClO, ClOCl and ClNO suggests that this process is a general feature of the condensed phase reaction dynamics for smaller halooxides and nitrosyl halides. Finally, future areas for study in both halooxide and nitrosyl halide photoreactivity are outlined.

Catherine C. Cooksey and Philip J. Reid "The Phase-dependent Photochemical Reaction Dynamics of Halooxides and Nitrosyl Halides," Photochemistry and Photobiology 80(3), 386-400, (1 December 2004). https://doi.org/10.1562/0031-8655(2004)080<0386:TPPRDO>2.0.CO;2
Received: 16 August 2004; Accepted: 1 August 2004; Published: 1 December 2004
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