language: en

[Articles]

DOI: 10.1002/zaac.200700520

[Darstellung und Kristallstruktur der Phasen Li 26 Na 58 Ba 38 E x (E  N, H; x  0  1)]

Preparation and Crystal Structures of Li 26 Na 58 Ba 38 E x Phases (E  N, H; x  0  1)

Volodymyr Smetana, Volodymyr Babizhetskyy, Grigori V. Vajenine und Arndt Simon*
Stuttgart / Germany,
Max-Planck-Institut für Festkörperforschung und Institut für Anorganische Chemie der Universität Stuttgart

[Bei der Redaktion eingegangen am 7. November 2007.]

Abstract. Li 26 Na 58 Ba 38 E x (E  N, H; x  01) were prepared as a majority phase by the reactions of the metals with Ba(N 3 ) 2 or BaH 2 at 250 °C for five days. According to single crystal and powder X-ray diffraction investigation, all compounds are cubic, space group F4 ¯ 3m with the unit cell parameter a ranging from 27.335(2) (x  0) to 27.554(3) (x  1, E  N, H) A ånd Z  4. This compound series can be described as a filled variant of Li 13 Na 29 Ba 19 , in which nitrogen or hydrogen atoms are found in the centre of Li 26 clusters in tetrahedral environment. Li 26 Na 58 Ba 38 E x represents a new group of metal-rich compounds extending the growing family of subnitrides.

Keywords: Subnitrides; Barium; Lithium; Crystal structure; Inter- metallic compounds Einleitung