Logo Logo
Hilfe
Hilfe
Switch Language to English

Poesl, Christine und Schnick, Wolfgang ORCID logoORCID: https://orcid.org/0000-0003-4571-8035 (2016): Ca2Mg5GeN6 - A Layered Nitridomagnesogermanate. In: Zeitschrift für Anorganische und Allgemeine Chemie, Bd. 642, Nr. 16: S. 882-886

Volltext auf 'Open Access LMU' nicht verfügbar.

Abstract

The nitridomagnesogermanate Ca2Mg5GeN6 was synthesized at 780 degrees C using a sodium flux in sealed tantalum ampules. Pure metals were used as starting materials and sodium azide NaN3 was added as nitrogen source. Ca2Mg5GeN6 was obtained as a byproduct in the form of colorless platelet-like crystals. Solution and refinement of the crystal structure [space group P6(3)/mmc (no. 194), Z = 1, a = 3.453(2), c = 17.506(13) angstrom and V = 180.8(2) angstrom(3)] were performed on the basis of single-crystal X-ray diffraction data. Ca2Mg5GeN6 represents the first layered nitridogermanate. Its structure is made up of corner-sharing (Mg/Ge)N-4 tetrahedra and corner-sharing trigonal planar (Mg/Ge)N-3 units with mixed occupancy of Mg and Ge. Ca2+ ions are located in between the sheets. The crystal structure is closely related to that of the nitridomagnesoaluminate CaMg2AlN3 as well as to the carbides ScAl3C3 and UAl3C3.

Dokument bearbeiten Dokument bearbeiten