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The adsorption of C6H5Cl on Si(111)7 × 7 studied by STM
Authors:X. H. Chen   Q. Kong   J. C. Polanyi   D. Rogers  S. So
Affiliation:

Department of Chemistry, University of Toronto, Toronto, Ontario, Canada M5S 1A1

Abstract:The adsorption of chlorobenzene on Si(111)7 × 7 at room temperature was studied by scanning tunneling microscopy (STM). Selective chemisorption was observed at different adatom sites. It was found that the center adatoms were more reactive than the corner adatoms, and the faulted half of the unit cell was more reactive than the unfaulted. The mechanism is discussed in terms of the electronic and atomic structures in Si(111)7 × 7. Both preferences indicate that chlorobenzene was present initially in a mobile precursor state.
Keywords:Chemisorption   Chlorobenzene   Low index single crystal surfaces   Scanning tunneling microscopy   Silicon
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