Materials Data on Li2GeO3 by Materials Project

Abstract

Li2GeO3 is Enargite-like structured and crystallizes in the orthorhombic Cmc2_1 space group. The structure is three-dimensional. Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with five equivalent GeO4 tetrahedra and corners with seven equivalent LiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.96–2.16 Å. Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with two equivalent GeO4 tetrahedra and corners with ten equivalent LiO4 tetrahedra. There is two shorter (1.73 Å) and two longer (1.85 Å) Ge–O bond length. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to two equivalent Li1+ and two equivalent Ge4+ atoms to form corner-sharing OLi2Ge2 tetrahedra. In the second O2- site, O2- is bonded to three equivalent Li1+ and one Ge4+ atom to form corner-sharing OLi3Ge tetrahedra.