Materials Data on BiAsPbO5 by Materials Project
PbBiOAsO4 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. Pb2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Pb–O bond distances ranging from 2.51–3.05 Å. Bi3+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Bi–O bond distances ranging from 2.20–2.47 Å. As5+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of As–O bond distances ranging from 1.71–1.74 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted linear geometry to two equivalent Pb2+, one Bi3+, and one As5+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Pb2+, one Bi3+, and one As5+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one Pb2+ and one As5+ atom. In the fourth O2- site, O2- is bonded to two equivalent Pb2+ and two equivalent Bi3+ atoms to form distorted edge-sharing OBi2Pb2 tetrahedra.