Precursor mediated cycloaddition reaction of ethylene to the Si(100)c(4 × 2) surface

Masashi Nagao, Hirobumi Umeyama, Kozo Mukai, Yoshiyuki Yamashita, Jun Yoshinobu, Kazuto Akagi, Shinji Tsuneyuki

Research output: Contribution to journalArticlepeer-review

52 Citations (Scopus)


We report the direct observation of a precursor state for the cycloaddition reaction (the di-σ bond formation) of ethylene on Si(100)c(4 × 2) using high-resolution electron energy loss spectroscopy at low temperature, and the meta-stable precursor state is identified as a weakly bonded π-complex type. The activation energy from the π-complex precursor to the di-σ bonded species is experimentally estimated to be 0.2 eV. First-principles calculations support the π-complex precursor mediated cycloaddition reaction of ethylene on Si(100)c(4 × 2).

Original languageEnglish
Pages (from-to)9922-9923
Number of pages2
JournalJournal of the American Chemical Society
Issue number32
Publication statusPublished - 2004 Aug 18
Externally publishedYes

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry


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