Materials Data on NaBi3(IO2)2 by Materials Project

Abstract

NaBi3(O2I)2 crystallizes in the orthorhombic Amm2 space group. The structure is three-dimensional. Na1+ is bonded in a 4-coordinate geometry to four equivalent O2- and four I1- atoms. All Na–O bond lengths are 2.42 Å. There are two shorter (3.57 Å) and two longer (3.62 Å) Na–I bond lengths. There are three inequivalent Bi3+ sites. In the first Bi3+ site, Bi3+ is bonded in a 4-coordinate geometry to four equivalent O2- and four I1- atoms. All Bi–O bond lengths are 2.26 Å. There are two shorter (3.62 Å) and two longer (3.66 Å) Bi–I bond lengths. In the second Bi3+ site, Bi3+ is bonded in a 4-coordinate geometry to four equivalent O2- and four I1- atoms. All Bi–O bond lengths are 2.29 Å. There are two shorter (3.63 Å) and two longer (3.67 Å) Bi–I bond lengths. In the third Bi3+ site, Bi3+ is bonded in a 4-coordinate geometry to four equivalent O2- and four I1- atoms. All Bi–O bond lengths are 2.29 Å. There are two shorter (3.62 Å) and two longer (3.66 Å) Bi–I bond lengths. O2- is bonded to one Na1+ and three Bi3+ atoms to form a mixture of edge and corner-sharing ONaBi3 tetrahedra. There are two inequivalent I1- sites. In the first I1- site, I1- is bonded in a distorted body-centered cubic geometry to two equivalent Na1+ and six Bi3+ atoms. In the second I1- site, I1- is bonded in a distorted body-centered cubic geometry to two equivalent Na1+ and six Bi3+ atoms.