Materials Data on KGe2N3 by Materials Project

Abstract

KGe2N3 crystallizes in the orthorhombic Cmc2_1 space group. The structure is three-dimensional. K1+ is bonded in a 5-coordinate geometry to five N3- atoms. There are a spread of K–N bond distances ranging from 2.71–2.86 Å. Ge4+ is bonded to four N3- atoms to form corner-sharing GeN4 tetrahedra. There are a spread of Ge–N bond distances ranging from 1.80–1.92 Å. There are two inequivalent N3- sites. In the first N3- site, N3- is bonded in a 2-coordinate geometry to three equivalent K1+ and two equivalent Ge4+ atoms. In the second N3- site, N3- is bonded in a 3-coordinate geometry to one K1+ and three equivalent Ge4+ atoms.