The University of Southampton
University of Southampton Institutional Repository

Photolysis of hobr and dobr at 266-nm - oh and od product-state distributions

Shaw, N., Bell, A.J., Crawford, M.J. and Frey, J.G. (1994) Photolysis of hobr and dobr at 266-nm - oh and od product-state distributions Journal of the Chemical Society - Faraday Transactions, 90, (6), pp. 817-823. (doi:10.1039/FT9949000817).

Record type: Article


The OH and OD rotational and vibrational product-state distributions have been recorded following the 266 nm photolysis of HOBr and DOBr, respectively, in a molecular beam. The photodissociation dynamics are similar to those observed for HOCl. The OH and OD distributions are rotationally cold and, for almost all of the states investigated, Gaussian in shape. Preferential population of the OH (or OD) 2PI3/2 spin- orbit state was observed, together with a strong preference for the PI(A') LAMBDA-doublet levels. The alignment, beta0(2)(02), tends towards the limiting value of -0.5 at the highest N levels that could be observed. In contrast to the photolysis of HOCl, about 10% of the OH fragment was observed in the first excited vibrational state, with a similar rotational distribution to the OH(v = 0) products. The OD product distributions from DOBr were found to be sensitive to the molecular-beam expansion conditions with a bimodal distribution obtained for the colder expansions. The photodissociation is consistent with excitation of a non-bonding electron to a sigma antibonding orbital which promotes rapid and direct bond fission via an upper state of A' symmetry.

Full text not available from this repository.

More information

Published date: 1994


Local EPrints ID: 15924
PURE UUID: 1bb7d3d9-8a5d-46a4-a4f9-d2b61c8c7782

Catalogue record

Date deposited: 17 Jun 2005
Last modified: 17 Jul 2017 16:44

Export record



Author: N. Shaw
Author: A.J. Bell
Author: M.J. Crawford
Author: J.G. Frey

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton:

ePrints Soton supports OAI 2.0 with a base URL of

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.