Synthesis and Characterization of Multinary Selenides A4B10Se19 (A=Sn, Pb; B=Sb, Bi)

Guan Ruei Chen, Mei Ting Shih, Kuei Bo Chen, Chi Shen Lee*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Multinary selenides A4B10Se19 (A=Sn/Pb; B=Sb/Bi), including Sn4Bi10Se19, Pb4Sb6.71Bi3.29Se19, and Pb4Sb3.43Bi6.57Se19, were prepared by solid-state reactions. These compounds adopt the Felbertalite structure type that crystallizes in the monoclinic space group C2/m (No. 12). Single-crystal and powder X-ray diffraction measurements studied the crystal structure and site preference of metal sites. They exhibit stacking of stepped layers (Formula presented.) (NaCl111-type) and ribbon-shape (Formula presented.) (NaCl100-type) units that are connected via shared Se2− ions. Electronic structure calculations indicated semiconducting properties and were verified by temperature-dependent conductivity and Seebeck coefficient measurements. The thermoelectric properties show a maximum power factor of 1.06 μW ⋅ m−1 ⋅ K−2 at 550 K for Pb4Sb6Bi4Se19.

Original languageEnglish
JournalZeitschrift fur Anorganische und Allgemeine Chemie
StateAccepted/In press - 2023


  • crystal structure
  • electronic structure
  • homologous series
  • main-group metal
  • multinary selenide


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