Materials Data on BeGeN2 by Materials Project
BeGeN2 is Lavarevi\'{c}ite-like structured and crystallizes in the orthorhombic Pna2_1 space group. The structure is three-dimensional. Be2+ is bonded to four N3- atoms to form BeN4 tetrahedra that share corners with four equivalent BeN4 tetrahedra and corners with eight equivalent GeN4 tetrahedra. There are a spread of Be–N bond distances ranging from 1.77–1.80 Å. Ge4+ is bonded to four N3- atoms to form GeN4 tetrahedra that share corners with four equivalent GeN4 tetrahedra and corners with eight equivalent BeN4 tetrahedra. There are a spread of Ge–N bond distances ranging from 1.86–1.89 Å. There are two inequivalent N3- sites. In the first N3- site, N3- is bonded to two equivalent Be2+ and two equivalent Ge4+ atoms to form corner-sharing NBe2Ge2 tetrahedra. In the second N3- site, N3- is bonded to two equivalent Be2+ and two equivalent Ge4+ atoms to form corner-sharing NBe2Ge2 tetrahedra.