The synthesis and crystal structure of NpSe 3

Brian J. Bellott*, Richard G. Haire, James A Ibers

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Neptunium triselenide, NpSe 3, was synthesized in high yield by the reaction of the elements in a Sb 2Se 3 flux at 1223 K. Its structure has been determined by single-crystal X-ray diffraction methods. Thecompound crystallizes with two formula units in space group C 2 2h-P2 1/mof the monoclinic system in the TiS 3 structure type with cell constants at 100 K of a = 5.592(3) Å, b = 4.002(2) Å, c = 9.422(5) Å,β = 97.40(1) °. The asymmetric unit comprises one neptunium and three selenium atoms, each with site symmetry m. Np-Se interatomic distances range from 2.859(2) to 2.927(3) Å; the Se-Se bond length of 2.340(3) Å is typical of a single bond. The compound may thus be charge-balanced and formulated as Np 4+Se 2-Se 2 2-.

Original languageEnglish (US)
Pages (from-to)1777-1779
Number of pages3
JournalZeitschrift fur Anorganische und Allgemeine Chemie
Issue number11
StatePublished - Sep 1 2012


  • Neptunium triselenide
  • Single crystal structure analysis
  • Synthesis
  • X-ray diffraction

ASJC Scopus subject areas

  • Inorganic Chemistry

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