A barium germanium nitride, Ba3Ge2N2, containing 1| Ge2- and GeN4-2 anions

Hisanori Yamane, Francis J. Disalvo

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34 Citations (Scopus)

Abstract

Single crystals of a ternary nitride, Ba3Ge2N2, were synthesized by the reaction of Ba and Ge with N from NaN3 in a Na melt by slow cooling from 750°C. The structure, as determined by single crystal X-ray diffraction, is monoclinic, space group P21/m with Z = 2, and has lattice parameters a = 9.6196(6), b = 4.0466(2), c = 10.1337 Å, β = 113.553(4)°. The structure consists of angular nitridometallate anions of [GeN2]4- and prisms of [Ba3Ge]4+ condensed in one dimension to form zigzag Zintl anions 1| Ge2-. The Ge-N bond length in the [GeN2]4- anions (1.88 Å) is similar to those found in linear MNz-2 anions, while the Ge-Ge bond in the Ge2- chains (2.50 Å) is only slightly larger than in elemental Ge (2.45 Å).

Original languageEnglish
Pages (from-to)69-74
Number of pages6
JournalJournal of Alloys and Compounds
Volume241
Issue number1-2
DOIs
Publication statusPublished - 1996 Aug 1

Keywords

  • Barium
  • Crystal structure
  • Germanium
  • Ternary nitride
  • Zintl anions

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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