DOI: 10.17188/1741821
title: Materials Data on Bi2B8O15 by Materials Project

description: Bi2B8O15 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are eight inequivalent B3+ sites. In the first B3+ site, B3+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of B–O bond distances ranging from 1.45–1.51 Å. In the second B3+ site, B3+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of B–O bond distances ranging from 1.46–1.50 Å. In the third 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 fourth 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 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 1.35–1.39 Å. In the sixth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.34 Å) and two longer (1.40 Å) B–O bond length. In the seventh B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.35 Å) and two longer (1.39 Å) B–O bond length. In the eighth 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 two inequivalent Bi3+ sites. In the first Bi3+ site, Bi3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Bi–O bond distances ranging from 2.17–3.10 Å. In the second Bi3+ site, Bi3+ is bonded in a 7-coordinate geometry to five O2- atoms. There are a spread of Bi–O bond distances ranging from 2.17–2.65 Å. There are fifteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two B3+ and one Bi3+ atom. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two B3+ and one Bi3+ atom. In the third O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two B3+ and one Bi3+ atom. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to one B3+ and two equivalent Bi3+ atoms. In the fifth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two B3+ atoms. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to one B3+ and two equivalent Bi3+ atoms. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to one B3+ and two equivalent Bi3+ atoms. In the eighth O2- site, O2- is bonded in a 1-coordinate geometry to one B3+ and two equivalent Bi3+ atoms. In the ninth O2- site, O2- is bonded in a bent 120 degrees geometry to two B3+ atoms. In the tenth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two B3+ and one Bi3+ atom. In the eleventh O2- site, O2- is bonded in a bent 120 degrees geometry to two B3+ atoms. In the twelfth O2- site, O2- is bonded in a bent 120 degrees geometry to two B3+ atoms. In the thirteenth O2- site, O2- is bonded in a bent 120 degrees geometry to two B3+ atoms. In the fourteenth O2- site, O2- is bonded in a bent 120 degrees geometry to two B3+ atoms. In the fifteenth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two B3+ atoms.