Surface-aligned photoreaction of DBr with C2H4 on Pt(111)

The photoreaction of DBr with C2H4 on Pt(111) was reported. Coadsorbed DBr and C2H4 are photoactive, producing adsorbed ethane and bromoethane which desorb subsequent temperature-programmed desorption. The formation of bromoethane involves a concerted reaction involving surface-aligned and oriented reactant pairs. When C2H4 and DBr are both in the first layer, the pi-bonded form of ethylene reacts more readily than the di-sigma-bonded form.