Thermal reactions of 2-iodoethanol on Cu(1 0 0)

Abstract

Temperature-programmed reaction/desorption, X-ray photoelectron spectroscopy, and reflection–absorption infrared spectroscopy have been employed to investigate the reactions of ICH 2CH 2OH on Cu(1 0 0) under ultrahigh-vacuum conditions. ICH 2CH 2OH can dissociate on Cu(1 0 0) at 100 K, forming a –CH 2CH 2OH surface intermediate. Density functional theory calculations predict that the –CH 2CH 2OH is most probably adsorbed on atop site. –CH 2CH 2OH on Cu(1 0 0) further decomposes to yield C 2H 4 below 270 K. No evidence shows the formation of –CH 2CH 2O– intermediate in the reactions of ICH 2CH 2OH on Cu(1 0 0) in contrast to the decomposition of BrCH 2CH 2OH on Cu(1 0 0) and ICH 2CH 2OH on Ag(1 1 1) and Ag(1 1 0), exhibiting the effects of carbon–halogen bonds and metal surfaces.