Materials Data on Li3B7O12 by Materials Project
Li3B7O12 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are three inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Li–O bond distances ranging from 1.97–2.36 Å. In the second Li1+ site, Li1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Li–O bond distances ranging from 2.04–2.08 Å. In the third Li1+ site, Li1+ is bonded to four O2- atoms to form distorted LiO4 trigonal pyramids that share corners with four BO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.96–2.03 Å. There are seven inequivalent B3+ sites. In the first B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of B–O bond distances ranging from 1.37–1.40 Å. In the second B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. All B–O bond lengths are 1.38 Å. In the third B3+ site, B3+ is bonded to four O2- atoms to form BO4 tetrahedra that share a cornercorner with one LiO4 trigonal pyramid. There are a spread of B–O bond distances ranging from 1.47–1.49 Å. In the fourth B3+ site, B3+ is bonded to four O2- atoms to form BO4 tetrahedra that share a cornercorner with one BO4 tetrahedra and corners with two equivalent LiO4 trigonal pyramids. There are a spread of B–O bond distances ranging from 1.46–1.50 Å. In the fifth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of B–O bond distances ranging from 1.36–1.40 Å. In the sixth B3+ site, B3+ is bonded to four O2- atoms to form BO4 tetrahedra that share a cornercorner with one BO4 tetrahedra and a cornercorner with one LiO4 trigonal pyramid. There are a spread of B–O bond distances ranging from 1.45–1.52 Å. In the seventh B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of B–O bond distances ranging from 1.36–1.39 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to one Li1+ and two B3+ atoms. In the second O2- site, O2- is bonded in a trigonal planar geometry to one Li1+ and two B3+ atoms. In the third O2- site, O2- is bonded in a trigonal planar geometry to one Li1+ and two B3+ atoms. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to two Li1+ and two B3+ atoms. In the fifth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Li1+ and two B3+ atoms. In the sixth O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+ and two B3+ atoms. In the seventh O2- site, O2- is bonded in a trigonal planar geometry to one Li1+ and two B3+ atoms. In the eighth O2- site, O2- is bonded in a distorted trigonal pyramidal geometry to two Li1+ and two B3+ atoms. In the ninth O2- site, O2- is bonded in a trigonal planar geometry to one Li1+ and two B3+ atoms. In the tenth O2- site, O2- is bonded in a 2-coordinate geometry to one Li1+ and two B3+ atoms. In the eleventh O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+ and two B3+ atoms. In the twelfth O2- site, O2- is bonded in a bent 120 degrees geometry to two B3+ atoms.