193 nm photodissociation of carbonyl cyanide CO(CN)(2) probed by the CN(v,J)fragment

Citation
Q. Li et al., 193 nm photodissociation of carbonyl cyanide CO(CN)(2) probed by the CN(v,J)fragment, CHEM P LETT, 323(1-2), 2000, pp. 105-110
Citations number
26
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
CHEMICAL PHYSICS LETTERS
ISSN journal
00092614 → ACNP
Volume
323
Issue
1-2
Year of publication
2000
Pages
105 - 110
Database
ISI
SICI code
0009-2614(20000609)323:1-2<105:1NPOCC>2.0.ZU;2-U
Abstract
The photodissociation of CO(CN)(2) at 193 nm has been studied by probing th e nascent CN fragments. Two energetically different CN species were identif ied, a rotationally and vibrationally hot one characterized by T-r similar to 2300 K and T-v similar to 3600 K, and a cold one exclusively in v = 0 wi th T-r similar to 410 K. The hot CN together with OCCN stems from the a-cle avage while the cold CN, which accounts for about 18% of all CN fragments, is from the spontaneous secondary decay OCCN --> CN + CO thus confirming th e three-body decay to be a sequential, process. (C) 2000 Elsevier Science B .V. All rights reserved.