RAIRS of small alkynes on Pd(100)
Abstract
The C bond parallel to the surface, through a di-σ+di-π interaction, and the H atoms tilted away from the surface. Propyne exhibits similar behaviour: at 80 K a physisorbed multilayer forms which converts to a chemisorbed monolayer on heating to 100 K. Again
ia the C
C bond with the H and CH3 groups tilted away from surface parallel. A disordered multilayer forms above the chemisorbed layer. Small doses were found to chemisorb directly at 80 K.
ia the C
C bond at 80 K, and further addition of