Photochemistry of C2H2 on NaCl(100)
- 1 January 1993
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Faraday Discussions
- Vol. 96, 95-104
- https://doi.org/10.1039/fd9939600095
Abstract
Recent experiments show that the photochemistry of C2H2 on NaCl(100) is remarkably simple, producing only hydrogen/deuterium exchange: C2H2+ C2D2 2C2HD. A new mechanism of this surface bound reaction is proposed. We suggest that it is the substrate, NaCl, that absorbs the exciting 184.9 nm photons to produce self-trapped excitons (STE). The triplet STE then transfers its energy to adsorbed acetylene which then diffuses along the surface and reacts with its neighbours to achieve the hydrogen/deuterium exchange.Keywords
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