Materials Data on BaFeO3 by Materials Project
BaFeO3 crystallizes in the trigonal R3m space group. The structure is two-dimensional and consists of three BaFeO3 sheets oriented in the (0, 0, 1) direction. there are four inequivalent Ba sites. In the first Ba site, Ba is bonded in a 12-coordinate geometry to twelve O atoms. There are six shorter (3.26 Å) and six longer (3.48 Å) Ba–O bond lengths. In the second Ba site, Ba is bonded in an octahedral geometry to six O atoms. There are three shorter (2.44 Å) and three longer (2.58 Å) Ba–O bond lengths. In the third Ba site, Ba is bonded in a distorted pentagonal pyramidal geometry to six O atoms. There are three shorter (2.54 Å) and three longer (2.72 Å) Ba–O bond lengths. In the fourth Ba site, Ba is bonded in a 9-coordinate geometry to nine O atoms. There are three shorter (2.78 Å) and six longer (3.15 Å) Ba–O bond lengths. There are four inequivalent Fe sites. In the first Fe site, Fe is bonded in a trigonal non-coplanar geometry to three equivalent O atoms. All Fe–O bond lengths are 1.71 Å. In the second Fe site, Fe is bonded in a trigonal planar geometry to three equivalent O atoms. All Fe–O bond lengths are 1.64 Å. In the third Fe site, Fe is bonded in a trigonal planar geometry to three equivalent O atoms. All Fe–O bond lengths are 1.84 Å. In the fourth Fe site, Fe is bonded in a 6-coordinate geometry to six O atoms. There are three shorter (1.85 Å) and three longer (2.28 Å) Fe–O bond lengths. There are four inequivalent O sites. In the first O site, O is bonded in a distorted bent 150 degrees geometry to one Ba and one Fe atom. In the second O site, O is bonded in a 1-coordinate geometry to three Ba and two Fe atoms. In the third O site, O is bonded in a 3-coordinate geometry to four Ba and one Fe atom. In the fourth O site, O is bonded in a 1-coordinate geometry to three Ba and one Fe atom.