Materials Data on Bi2BO5 by Materials Project
BBi2O5 crystallizes in the orthorhombic Cmc2_1 space group. The structure is three-dimensional. B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.38 Å) and one longer (1.39 Å) B–O bond length. Bi+3.50+ is bonded to seven O2- atoms to form a mixture of distorted corner and edge-sharing BiO7 pentagonal bipyramids. There are a spread of Bi–O bond distances ranging from 2.27–2.52 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one B3+ and two equivalent Bi+3.50+ atoms. In the second O2- site, O2- is bonded to four equivalent Bi+3.50+ atoms to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one B3+ and two equivalent Bi+3.50+ atoms.