Synthesis, structure, and magnetic properties of Ba2Cu2US5

Hui yi Zeng, Jiyong Yao, James A. Ibers*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


The alkaline-earth uranium chalcogenide Ba2Cu2US5 was obtained in a two-step reaction from BaS, Cu2S, and US2. Ba2Cu2US5 crystallizes in a new structure type in space group C2/m of the monoclinic system with two formula units in a cell of dimensions a=13.606(3) Å, b=4.0825(8) Å, c=9.3217(19) Å, and β=116.32(3)° (153 K). The structure consists of 2 [Cu2 US54 -] layers separated by Ba atoms in bicapped trigonal-prismatic coordination. The two-dimensional 2 [Cu2 US54 -] layer is built from US6 octahedra and CuS4 tetrahedra. The connectivity of the MSn polyhedra within the layer in the [001] direction is oct tet tet oct tet tet. A μeff value of 2.69(2) μB/U was obtained from the magnetic susceptibility data. No magnetic transition was observed for Ba2Cu2US5 down to 2 K.

Original languageEnglish (US)
Pages (from-to)552-555
Number of pages4
JournalJournal of Solid State Chemistry
Issue number3
StatePublished - Mar 2008


  • Alkaline-earth
  • Crystal structure
  • Layered structure
  • Magnetism
  • Synthesis
  • Uranium

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry


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