Materials Data on Li4Bi2O5 by Materials Project
Li4Bi2O5 crystallizes in the orthorhombic Pnna space group. The structure is three-dimensional. there are three inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded to four O2- atoms to form distorted edge-sharing LiO4 trigonal pyramids. There are a spread of Li–O bond distances ranging from 1.95–2.35 Å. In the second Li1+ site, Li1+ is bonded in a linear geometry to two equivalent O2- atoms. Both Li–O bond lengths are 1.84 Å. In the third Li1+ site, Li1+ is bonded in a linear geometry to two equivalent O2- atoms. Both Li–O bond lengths are 1.88 Å. Bi3+ is bonded in a distorted rectangular see-saw-like geometry to four O2- atoms. There are a spread of Bi–O bond distances ranging from 2.11–2.33 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to two equivalent Li1+ and two equivalent Bi3+ atoms. In the second O2- site, O2- is bonded in a 4-coordinate geometry to three Li1+ and one Bi3+ atom. In the third O2- site, O2- is bonded to two equivalent Li1+ and two equivalent Bi3+ atoms to form distorted corner-sharing OLi2Bi2 tetrahedra.