A structural model for silicotungstate (α-SiW12O404-) monolayers on silver (111)

Maohui Ge, Andrew A. Gewirth, Walter G. Klemperer, Craig G. Wall

Research output: Contribution to journalArticlepeer-review


Self-assembled monolayers of α-SiW12C404- anions on Ag(111) surfaces adopt an ordered structure in which approximately square domains of anions separated by 10.2 ± 0.5 Å are misoriented by about 30° relative to each other. An anion-substrate bonding model is proposed where α-SiW12O404- anions act as tetradentate ligands bridging four silver surface atoms arranged at the vertices of 2 × √3 rectangle. The anions occupy translationally-equivalent brinding sites on a (4 1 1 4) Ag(111) superlattice whose primitive unit cell is almost square, with a′ = b = √13 a = 10.42 Å and α = 92.2°.

Original languageEnglish (US)
Pages (from-to)2175-2178
Number of pages4
JournalPure and Applied Chemistry
Issue number10
StatePublished - Oct 1997
Externally publishedYes

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering


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