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State-selected dissociation of cis-HONO(Ã 1A″): Effect of intramolecular hydrogen bonding

✍ Scribed by J.H. Shan; S.J. Wategaonkar; R. Vasudev

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
384 KB
Volume
160
Category
Article
ISSN
0009-2614

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✦ Synopsis

The influence of intramolecular hydrogen bonding on the photodissociation of cis-HONO is probed via measurements on the OH fragment ejected by specific -N-O stretching (vz) vibrational levels of the x state. Due to hydrogen bonding between the H atom and the terminal oxygen, the v1 motion is coupled to the in-plane HON bend uj. Since the latter evolves into fragment rotation, the rotational energy and anisotropy of the OH product increases with the number of v2 quanta. By contrast, u2 in tram HONO is a relatively isolated -N=O vibration and thus does not influence the OH photofragment's properties.

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