Interaction of bromocyclopropane with Cu(110)

The adsorption of bromocyclopropane on a Cu(110) single crystal surface was investigated using HREELS and TPD measurements over the temperature range 90-500 K. Molecular desorption of multilayer and monolayer bromocyclopropane was detected at 160 and 208 K, respectively. Changes in the relative intensities of the HREELS peaks provide some evidence that a small fraction of the monolayer dissociates on the Cu(110) surface at or below 210 K. A comparison of spectra obtained at 250 K with previous results for electron irradiated cyclopropane suggests the formation of a small coverage of cyclopropyl groups. A weak TPD peak at 363 K is tentatively attributed to propene formation via cyclopropyl decomposition. DFT-LSD calculated data are used in the assignment of the HREELS loss peaks. © 1998 Elsevier Science B.V. All rights reserved.