Intrinsic Reactivity of Magnesium Surfaces toward Methyl Bromide

Ralph G Nuzzo, Lawrence H. Dubois

Research output: Contribution to journalArticlepeer-review

Abstract

The chemisorption and subsequent decomposition of methyl bromide on a Mg(0001) single-crystal surface is found to lead cleanly to the formation of a surface bromide and gas-phase hydrocarbon products including ethane. Stable surface alkyls are not observed even at temperatures as low as -150°C. Co-adsorbed dimethyl ether does not perturb this reactivity pattern. The formation of either a thin surface bromide or a surface oxide passivates this material to further reaction under UHV conditions. The implications of these results with respect to the mechanisms of carbon-halogen bond cleavage on magnesium and the formation of Grignard reagents are discussed.

Original languageEnglish (US)
Pages (from-to)2881-2886
Number of pages6
JournalJournal of the American Chemical Society
Volume108
Issue number11
DOIs
StatePublished - Jan 1 1986
Externally publishedYes

ASJC Scopus subject areas

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

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