Low-temperature polyol synthesis of AuCuSn2 and AuNiSn 2: Using solution chemistry to access ternary intermetallic compounds as nanocrystals

Brian M. Leonard, Nattamai S.P. Bhuvanesh, Raymond E. Schaak

Research output: Contribution to journalArticlepeer-review

85 Scopus citations

Abstract

Ternary intermetallic compounds, which possess a wide variety of important properties with both academic and technological relevance, are typically synthesized using traditional high-temperature methods. Here, we demonstrate that the polyol method, which is used extensively to synthesize nanocrystals and nanocrystalline powders of metals and simple binary compounds, serves as an effective low-temperature exploratory medium for synthesizing new ordered ternary intermetallics as nanocrystals. Accordingly, we describe the synthesis and structural characterization of AuCuSn2 and AuNiSn2, which adopt an ordered NiAs-type superstructure that is not observed using equilibrium synthetic methods. AuCuSn2 forms in solution of 120 °C as well-formed nanocrystals, and the ordered phase is stable up to 450 °C. AuNiSn2 behaves similarly to AuCuSn2.

Original languageEnglish (US)
Pages (from-to)7326-7327
Number of pages2
JournalJournal of the American Chemical Society
Volume127
Issue number20
DOIs
StatePublished - May 25 2005

All Science Journal Classification (ASJC) codes

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

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