Abstract
Carbon−carbon bond activation by subsurface hydrogen has been observed for adsorbed cyclopropane at 170 K on the Ni(111) surface. Propane was the dominant product, and no multiple C−C bond activation processes were observed. Cyclopropane desorbs at 124 K from both the clean and the hydrogen-coadsorbed Ni(111) surface. Neither coadsorbed hydrogen nor disproportionation induces propane formation. These observations are consistent with previous results that energetic forms of hydrogen are necessary to activate the C−C bond even in strained cyclopropane under ultrahigh-vacuum conditions.
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