AuCuSe4: A mixed polychalcogenide with Se32- and Se2- anions

Y. Park*, M. G. Kanatzidis

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


The polychalcogenide compound AuCuSe4 crystallizes in the monoclinic space group P21/m with a = 4.318(2) Å, b = 7.447(1) Å, c = 8.099(1) Å, β = 93.33(2)°, and Z = 2. The structure of AuCuSe4 is a unique three-dimensional framework assembled from formally Au3+ and Cu+ ions and Se32- and Se2- fragments. Conceptually, the framework is composed of one-dimensional [Au(Se3)Se]nn- chains linked by Cu+ atoms. The Au atoms adopt a square planar geometry while Cu atoms adopt a severely distorted tetrahedral geometry. The Se32- ligand in this structure shows an unprecedented ligation mode using both its terminal and internal selenium atoms. The material is a p-type narrow gap semiconductor with a band gap of ∼0.52 eV.

Original languageEnglish (US)
Pages (from-to)5913-5916
Number of pages4
JournalInorganic chemistry
Issue number23
StatePublished - Nov 5 2001

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry


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