Materials Data on CeB7IO15 by Materials Project

Abstract

CeB7O15I crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Ce4+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Ce–O bond distances ranging from 1.98–2.83 Å. There are seven 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 1.37–1.39 Å. In the second 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 1.44–1.54 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 1.44–1.53 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 1.44–1.51 Å. In the fifth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.37 Å) and two longer (1.38 Å) B–O bond length. In the sixth 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 1.36–1.38 Å. In the seventh B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.37 Å) and one longer (1.38 Å) B–O bond length. There are fifteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two B3+ atoms. In the second O2- site, O2- is bonded in a bent 120 degrees geometry to one Ce4+ and two B3+ atoms. In the third O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ce4+ and two B3+ atoms. In the fourth O2- site, O2- is bonded in a trigonal planar geometry to three B3+ atoms. In the fifth O2- site, O2- is bonded in a bent 120 degrees geometry to one Ce4+ and two B3+ atoms. In the sixth O2- site, O2- is bonded in a bent 120 degrees geometry to two B3+ atoms. In the seventh O2- site, O2- is bonded in a bent 120 degrees geometry to two B3+ atoms. In the eighth O2- site, O2- is bonded in a bent 120 degrees geometry to two B3+ atoms. In the ninth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ce4+ and two B3+ atoms. In the tenth O2- site, O2- is bonded in a distorted single-bond geometry to one Ce4+ and one I5+ atom. The O–I bond length is 1.88 Å. In the eleventh O2- site, O2- is bonded in a bent 120 degrees geometry to one Ce4+ and two B3+ atoms. In the twelfth O2- site, O2- is bonded in a single-bond geometry to one Ce4+ atom. In the thirteenth O2- site, O2- is bonded in a bent 120 degrees geometry to one Ce4+ and two B3+ atoms. In the fourteenth O2- site, O2- is bonded in a single-bond geometry to one Ce4+ atom. In the fifteenth O2- site, O2- is bonded in a single-bond geometry to one B3+ atom. I5+ is bonded in a single-bond geometry to one O2- atom.