Materials Data on B5Pb2IO9 by Materials Project
B5Pb2O9I crystallizes in the orthorhombic Pnn2 space group. The structure is three-dimensional. there are five 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 corner-sharing BO4 tetrahedra. There are a spread of B–O bond distances ranging from 1.48–1.50 Å. In the fourth B3+ site, B3+ is bonded to four O2- atoms to form corner-sharing BO4 tetrahedra. There are a spread of B–O bond distances ranging from 1.45–1.53 Å. In the fifth B3+ site, B3+ is bonded to four O2- atoms to form corner-sharing BO4 tetrahedra. There are a spread of B–O bond distances ranging from 1.47–1.50 Å. There are two inequivalent Pb2+ sites. In the first Pb2+ site, Pb2+ is bonded in a 6-coordinate geometry to six O2- and two I1- atoms. There are a spread of Pb–O bond distances ranging from 2.54–2.88 Å. There are one shorter (3.18 Å) and one longer (3.32 Å) Pb–I bond lengths. In the second Pb2+ site, Pb2+ is bonded in a 9-coordinate geometry to seven O2- and two I1- atoms. There are a spread of Pb–O bond distances ranging from 2.59–3.05 Å. There are one shorter (3.16 Å) and one longer (3.18 Å) Pb–I bond lengths. There are nine inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two B3+ and one Pb2+ atom. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two B3+, one Pb2+, and one I1- atom. The O–I bond length is 3.75 Å. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to two B3+, one Pb2+, and two I1- atoms. There are one shorter (3.31 Å) and one longer (3.52 Å) O–I bond lengths. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to two B3+ and two Pb2+ atoms. In the fifth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two B3+ and two Pb2+ atoms. In the sixth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two B3+ and one Pb2+ atom. In the seventh O2- site, O2- is bonded in a bent 120 degrees geometry to two B3+ and two Pb2+ atoms. In the eighth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two B3+ and one Pb2+ atom. In the ninth O2- site, O2- is bonded in a bent 120 degrees geometry to two B3+ and two Pb2+ atoms. There are two inequivalent I1- sites. In the first I1- site, I1- is bonded in a 6-coordinate geometry to four Pb2+ and two equivalent O2- atoms. In the second I1- site, I1- is bonded in a 8-coordinate geometry to four Pb2+ and four O2- atoms.