Materials Data on La2MgGeO6 by Materials Project

Abstract

La2MgGeO6 is Orthorhombic Perovskite-derived structured and crystallizes in the trigonal R-3 space group. The structure is three-dimensional. Mg2+ is bonded to six equivalent O2- atoms to form MgO6 octahedra that share corners with six equivalent GeO6 octahedra. The corner-sharing octahedral tilt angles are 21°. All Mg–O bond lengths are 2.07 Å. La3+ is bonded in a 3-coordinate geometry to nine equivalent O2- atoms. There are a spread of La–O bond distances ranging from 2.42–2.82 Å. Ge4+ is bonded to six equivalent O2- atoms to form GeO6 octahedra that share corners with six equivalent MgO6 octahedra. The corner-sharing octahedral tilt angles are 21°. All Ge–O bond lengths are 1.92 Å. O2- is bonded in a 5-coordinate geometry to one Mg2+, three equivalent La3+, and one Ge4+ atom.