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Selectivity in the fragmentation of 1-bromo-2-iodoethane following iodine 4d core electron excitation

✍ Scribed by R. Thissen; M.-J. Hubin-Franskin; M. Furlan; J.-L. Piette; P. Morin; I. Nenner

Publisher: Elsevier Science
Year: 1992
Tongue: English
Weight: 574 KB
Volume: 199
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(92)80055-g

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✦ Synopsis

The selectivity in the fragmentation of l-bromo-2-iodoethane after 4d iodine electron excitation has been investigated by TOF mass spectrometry, photoion-photoion coincidence and synchrotron radiation. Analysis of the results shows that the excitation of the I 4d5,2,312 electrons into the lowest-energy empty 0' orbital leads to an enhancement of the C-I and C-Br bond breakages when the neutral core hole relaxes both into the mono-and the doubkionization continua. The results are discussed in terms of localization of the positive charges around the C-I bond, which was originally excited through the resonances.

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