DOI: 10.17188/1733719
title: Materials Data on Li2Ge7O15 by Materials Project

description: Li2Ge7O15 crystallizes in the orthorhombic Pca2_1 space group. The structure is three-dimensional. there are two inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded to six O2- atoms to form distorted LiO6 octahedra that share corners with eight GeO4 tetrahedra and edges with two equivalent GeO6 octahedra. There are a spread of Li–O bond distances ranging from 1.98–2.57 Å. In the second Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with ten GeO4 tetrahedra and an edgeedge with one GeO6 octahedra. There are a spread of Li–O bond distances ranging from 1.98–2.42 Å. There are seven inequivalent Ge4+ sites. In the first Ge4+ site, Ge4+ is bonded to six O2- atoms to form GeO6 octahedra that share corners with six GeO4 tetrahedra and edges with three LiO6 octahedra. There are a spread of Ge–O bond distances ranging from 1.89–1.93 Å. In the second Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share a cornercorner with one GeO6 octahedra, corners with three LiO6 octahedra, and corners with three GeO4 tetrahedra. The corner-sharing octahedra tilt angles range from 49–72°. There are a spread of Ge–O bond distances ranging from 1.74–1.81 Å. In the third Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share a cornercorner with one GeO6 octahedra, corners with three LiO6 octahedra, and corners with three GeO4 tetrahedra. The corner-sharing octahedra tilt angles range from 50–68°. There are a spread of Ge–O bond distances ranging from 1.74–1.79 Å. In the fourth Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share a cornercorner with one GeO6 octahedra, corners with three LiO6 octahedra, and corners with three GeO4 tetrahedra. The corner-sharing octahedra tilt angles range from 48–66°. There are a spread of Ge–O bond distances ranging from 1.74–1.80 Å. In the fifth Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share a cornercorner with one GeO6 octahedra, corners with three LiO6 octahedra, and corners with three GeO4 tetrahedra. The corner-sharing octahedra tilt angles range from 47–70°. There are a spread of Ge–O bond distances ranging from 1.74–1.80 Å. In the sixth Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share a cornercorner with one GeO6 octahedra, corners with three LiO6 octahedra, and corners with three GeO4 tetrahedra. The corner-sharing octahedra tilt angles range from 44–66°. There are a spread of Ge–O bond distances ranging from 1.75–1.80 Å. In the seventh Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share a cornercorner with one GeO6 octahedra, corners with three LiO6 octahedra, and corners with three GeO4 tetrahedra. The corner-sharing octahedra tilt angles range from 44–66°. There are a spread of Ge–O bond distances ranging from 1.74–1.80 Å. There are fifteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 120 degrees geometry to two Ge4+ atoms. In the second O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+ and two Ge4+ atoms. In the third O2- site, O2- is bonded in a trigonal planar geometry to one Li1+ and two Ge4+ atoms. In the fourth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Li1+ and two Ge4+ atoms. In the fifth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Li1+ and two Ge4+ atoms. In the sixth O2- site, O2- is bonded in a bent 120 degrees geometry to two Ge4+ atoms. In the seventh O2- site, O2- is bonded in a distorted trigonal planar geometry to one Li1+ and two Ge4+ atoms. In the eighth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Li1+ and two Ge4+ atoms. In the ninth O2- site, O2- is bonded in a trigonal planar geometry to one Li1+ and two Ge4+ atoms. In the tenth O2- site, O2- is bonded in a trigonal planar geometry to one Li1+ and two Ge4+ atoms. In the eleventh O2- site, O2- is bonded in a trigonal planar geometry to one Li1+ and two Ge4+ atoms. In the twelfth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Li1+ and two Ge4+ atoms. In the thirteenth O2- site, O2- is bonded in a bent 120 degrees geometry to two Ge4+ atoms. In the fourteenth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Li1+ and two Ge4+ atoms. In the fifteenth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Li1+ and two Ge4+ atoms.