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Materials Data on BaCoO3 by Materials Project

BaCoO3 crystallizes in the trigonal P-3m1 space group. The structure is three-dimensional. Ba2+ is bonded to twelve equivalent O2- atoms to form BaO12 cuboctahedra that share corners with six equivalent BaO12 cuboctahedra, corners with six CoO6 octahedra, faces with eight equivalent BaO12 cuboctahedra, and faces with six CoO6 octahedra. The corner-sharing octahedral tilt angles are 13°. There are a spread of Ba–O bond distances ranging from 2.87–3.02 Å. There are two inequivalent Co4+ sites. In the first Co4+ site, Co4+ is bonded to six equivalent O2- atoms to form CoO6 octahedra that share corners with six equivalent BaO12 cuboctahedra, faces with six equivalent BaO12 cuboctahedra, and faces with two equivalent CoO6 octahedra. All Co–O bond lengths are 1.89 Å. In the second Co4+ site, Co4+ is bonded to six equivalent O2- atoms to form CoO6 octahedra that share corners with six equivalent BaO12 cuboctahedra, faces with six equivalent BaO12 cuboctahedra, and faces with two equivalent CoO6 octahedra. All Co–O bond lengths are 1.89 Å. O2- is bonded in a 2-coordinate geometry to four equivalent Ba2+ and two Co4+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on BaCoO2 by Materials Project

BaCoO2 crystallizes in the trigonal P3_121 space group. The structure is three-dimensional. Ba2+ is bonded in a 8-coordinate geometry to eight equivalent O2- atoms. There are a spread of Ba–O bond distances ranging from 2.70–3.31 Å. Co2+ is bonded to four equivalent O2- atoms to form corner-sharing CoO4 tetrahedra. There is two shorter (1.95 Å) and two longer (2.04 Å) Co–O bond length. O2- is bonded in a 2-coordinate geometry to four equivalent Ba2+ and two equivalent Co2+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on Ba2Co9O14 by Materials Project

Ba2Co9O14 crystallizes in the trigonal R-3m space group. The structure is three-dimensional. Ba2+ is bonded in a 12-coordinate geometry to twelve O2- atoms. There are a spread of Ba–O bond distances ranging from 2.89–3.34 Å. There are five inequivalent Co+2.67+ sites. In the first Co+2.67+ site, Co+2.67+ is bonded to four O2- atoms to form corner-sharing CoO4 tetrahedra. The corner-sharing octahedra tilt angles range from 22–59°. All Co–O bond lengths are 1.95 Å. In the second Co+2.67+ site, Co+2.67+ is bonded to six O2- atoms to form CoO6 octahedra that share corners with three equivalent CoO6 octahedra, corners with three equivalent CoO4 tetrahedra, edges with three equivalent CoO6 octahedra, and a faceface with one CoO6 octahedra. The corner-sharing octahedral tilt angles are 8°. There is three shorter (1.93 Å) and three longer (1.97 Å) Co–O bond length. In the third Co+2.67+ site, Co+2.67+ is bonded to six equivalent O2- atoms to form CoO6 octahedra that share corners with six equivalent CoO4 tetrahedra and faces with two equivalent CoO6 octahedra. All Co–O bond lengths are 1.96 Å. In the fourth Co+2.67+ site, Co+2.67+ is bonded to six O2- atoms to form CoO6 octahedra that share corners with two equivalent CoO4 tetrahedra and edges with eight CoO6 octahedra. All Co–O bond lengths are 1.93 Å. In the fifth Co+2.67+ site, Co+2.67+ is bonded to six equivalent O2- atoms to form a mixture of corner and edge-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 8°. All Co–O bond lengths are 2.09 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to three equivalent Ba2+ and three Co+2.67+ atoms. In the second O2- site, O2- is bonded to four Co+2.67+ atoms to form distorted corner-sharing OCo4 trigonal pyramids. In the third O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to one Ba2+ and four Co+2.67+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on Ba8Co7O19 by Materials Project

Ba8Co7O19 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are sixteen inequivalent Ba2+ sites. In the first Ba2+ site, Ba2+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of Ba–O bond distances ranging from 2.79–3.15 Å. In the second Ba2+ site, Ba2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Ba–O bond distances ranging from 2.79–2.99 Å. In the third Ba2+ site, Ba2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Ba–O bond distances ranging from 2.59–3.28 Å. In the fourth Ba2+ site, Ba2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Ba–O bond distances ranging from 2.52–3.19 Å. In the fifth Ba2+ site, Ba2+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of Ba–O bond distances ranging from 2.76–3.30 Å. In the sixth Ba2+ site, Ba2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ba–O bond distances ranging from 2.63–2.97 Å. In the seventh Ba2+ site, Ba2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ba–O bond distances ranging from 2.59–3.13 Å. In the eighth Ba2+ site, Ba2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ba–O bond distances ranging from 2.59–3.13 Å. In the ninth Ba2+ site, Ba2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Ba–O bond distances ranging from 2.68–3.22 Å. In the tenth Ba2+ site, Ba2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Ba–O bond distances ranging from 2.57–2.97 Å. In the eleventh Ba2+ site, Ba2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ba–O bond distances ranging from 2.58–3.18 Å. In the twelfth Ba2+ site, Ba2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ba–O bond distances ranging from 2.62–2.94 Å. In the thirteenth Ba2+ site, Ba2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ba–O bond distances ranging from 2.62–3.03 Å. In the fourteenth Ba2+ site, Ba2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ba–O bond distances ranging from 2.61–3.05 Å. In the fifteenth Ba2+ site, Ba2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Ba–O bond distances ranging from 2.76–3.09 Å. In the sixteenth Ba2+ site, Ba2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Ba–O bond distances ranging from 2.70–3.21 Å. There are fourteen inequivalent Co+3.14+ sites. In the first Co+3.14+ site, Co+3.14+ is bonded to five O2- atoms to form distorted edge-sharing CoO5 trigonal bipyramids. There are a spread of Co–O bond distances ranging from 1.75–2.03 Å. In the second Co+3.14+ site, Co+3.14+ is bonded to six O2- atoms to form face-sharing CoO6 octahedra. There are a spread of Co–O bond distances ranging from 1.88–2.20 Å. In the third Co+3.14+ site, Co+3.14+ is bonded to five O2- atoms to form a mixture of distorted face and edge-sharing CoO5 trigonal bipyramids. There are a spread of Co–O bond distances ranging from 1.84–2.23 Å. In the fourth Co+3.14+ site, Co+3.14+ is bonded to five O2- atoms to form a mixture of face and edge-sharing CoO5 trigonal bipyramids. There are a spread of Co–O bond distances ranging from 1.83–2.15 Å. In the fifth Co+3.14+ site, Co+3.14+ is bonded to five O2- atoms to form CoO5 trigonal bipyramids that share an edgeedge with one CoO5 trigonal bipyramid and a faceface with one CoO6 octahedra. There are a spread of Co–O bond distances ranging from 1.88–2.10 Å. In the sixth Co+3.14+ site, Co+3.14+ is bonded to five O2- atoms to form distorted edge-sharing CoO5 trigonal bipyramids. There are a spread of Co–O bond distances ranging from 1.79–2.15 Å. In the seventh Co+3.14+ site, Co+3.14+ is bonded to five O2- atoms to form a mixture of face and edge-sharing CoO5 trigonal bipyramids. There are a spread of Co–O bond distances ranging from 1.83–2.17 Å. In the eighth Co+3.14+ site, Co+3.14+ is bonded to five O2- atoms to form distorted CoO5 trigonal bipyramids that share an edgeedge with one CoO5 trigonal bipyramid and a faceface with one CoO6 octahedra. There are a spread of Co–O bond distances ranging from 1.86–2.17 Å. In the ninth Co+3.14+ site, Co+3.14+ is bonded to five O2- atoms to form CoO5 trigonal bipyramids that share an edgeedge with one CoO5 trigonal bipyramid and a faceface with one CoO6 octahedra. There are a spread of Co–O bond distances ranging from 1.86–2.05 Å. In the tenth Co+3.14+ site, Co+3.14+ is bonded to five O2- atoms to form a mixture of face and edge-sharing CoO5 trigonal bipyramids. There are a spread of Co–O bond distances ranging from 1.86–2.16 Å. In the eleventh Co+3.14+ site, Co+3.14+ is bonded to six O2- atoms to form face-sharing CoO6 octahedra. There are a spread of Co–O bond distances ranging from 1.83–2.19 Å. In the twelfth Co+3.14+ site, Co+3.14+ is bonded in a distorted see-saw-like geometry to four O2- atoms. There are a spread of Co–O bond distances ranging from 1.85–2.01 Å. In the thirteenth Co+3.14+ site, Co+3.14+ is bonded to six O2- atoms to form distorted face-sharing CoO6 octahedra. There are a spread of Co–O bond distances ranging from 1.75–2.24 Å. In the fourteenth Co+3.14+ site, Co+3.14+ is bonded to five O2- atoms to form distorted CoO5 trigonal bipyramids that share an edgeedge with one CoO5 trigonal bipyramid and a faceface with one CoO6 octahedra. There are a spread of Co–O bond distances ranging from 1.88–2.34 Å. There are thirty-eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to four Ba2+ and one Co+3.14+ atom. In the second O2- site, O2- is bonded in a 5-coordinate geometry to three Ba2+ and two Co+3.14+ atoms. In the third O2- site, O2- is bonded in a 2-coordinate geometry to three Ba2+ and two Co+3.14+ atoms. In the fourth O2- site, O2- is bonded in a 6-coordinate geometry to four Ba2+ and two Co+3.14+ atoms. In the fifth O2- site, O2- is bonded in a 1-coordinate geometry to four Ba2+ and two Co+3.14+ atoms. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to three Ba2+ and two Co+3.14+ atoms. In the seventh O2- site, O2- is bonded in a 2-coordinate geometry to four Ba2+ and two Co+3.14+ atoms. In the eighth O2- site, O2- is bonded in a 2-coordinate geometry to three Ba2+ and two Co+3.14+ atoms. In the ninth O2- site, O2- is bonded in a 2-coordinate geometry to four Ba2+ and two Co+3.14+ atoms. In the tenth O2- site, O2- is bonded in a 6-coordinate geometry to four Ba2+ and two Co+3.14+ atoms. In the eleventh O2- site, O2- is bonded in a 5-coordinate geometry to three Ba2+ and two Co+3.14+ atoms. In the twelfth O2- site, O2- is bonded in a 6-coordinate geometry to four Ba2+ and two Co+3.14+ atoms. In the thirteenth O2- site, O2- is bonded in a 5-coordinate geometry to three Ba2+ and two Co+3.14+ atoms. In the fourteenth O2- site, O2- is bonded in a 2-coordinate geometry to four Ba2+ and two Co+3.14+ atoms. In the fifteenth O2- site, O2- is bonded in a 2-coordinate geometry to four Ba2+ and two Co+3.14+ atoms. In the sixteenth O2- site, O2- is bonded in a 6-coordinate geometry to four Ba2+ and two Co+3.14+ atoms. In the seventeenth O2- site, O2- is bonded in a distorted trigonal bipyramidal geometry to three Ba2+ and two Co+3.14+ atoms. In the eighteenth O2- site, O2- is bonded in a 6-coordinate geometry to four Ba2+ and two Co+3.14+ atoms. In the nineteenth O2- site, O2- is bonded in a 6-coordinate geometry to four Ba2+ and two Co+3.14+ atoms. In the twentieth O2- site, O2- is bonded in a 6-coordinate geometry to four Ba2+ and two Co+3.14+ atoms. In the twenty-first O2- site, O2- is bonded in a 5-coordinate geometry to three Ba2+ and two Co+3.14+ atoms. In the twenty-second O2- site, O2- is bonded in a distorted single-bond geometry to four Ba2+ and one Co+3.14+ atom. In the twenty-third O2- site, O2- is bonded in a 5-coordinate geometry to three Ba2+ and two Co+3.14+ atoms. In the twenty-fourth O2- site, O2- is bonded in a 6-coordinate geometry to four Ba2+ and two Co+3.14+ atoms. In the twenty-fifth O2- site, O2- is bonded in a distorted single-bond geometry to four Ba2+ and one Co+3.14+ atom. In the twenty-sixth O2- site, O2- is bonded in a 2-coordinate geometry to four Ba2+ and two Co+3.14+ atoms. In the twenty-seventh O2- site, O2- is bonded in a 1-coordinate geometry to three Ba2+ and two Co+3.14+ atoms. In the twenty-eighth O2- site, O2- is bonded in a 6-coordinate geometry to four Ba2+ and two Co+3.14+ atoms. In the twenty-ninth O2- site, O2- is bonded in a 6-coordinate geometry to four Ba2+ and two Co+3.14+ atoms. In the thirtieth O2- site, O2- is bonded in a 5-coordinate geometry to three Ba2+ and two Co+3.14+ atoms. In the thirty-first O2- site, O2- is bonded in a 1-coordinate geometry to three Ba2+ and two Co+3.14+ atoms. In the thirty-second O2- site, O2- is bonded in a 5-coordinate geometry to three Ba2+ and two Co+3.14+ atoms. In the thirty-third O2- site, O2- is bonded in a 5-coordinate geometry to three Ba2+ and two Co+3.14+ atoms. In the thirty-fourth O2- site, O2- is bonded in a 1-coordinate geometry to four Ba2+ and two Co+3.14+ atoms. In the thirty-fifth O2- site, O2- is bonded in a 2-coordinate geometry to four Ba2+ and two Co+3.14+ atoms. In the thirty-sixth O2- site, O2- is bonded in a 6-coordinate geometry to four Ba2+ and two Co+3.14+ atoms. In the thirty-seventh O2- site, O2- is bonded in a distorted single-bond geometry to four Ba2+ and one Co+3.14+ atom. In the thirty-eighth O2- site, O2- is bonded in a 5-coordinate geometry to three Ba2+ and two Co+3.14+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on Ba(CoO2)4 by Materials Project

Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

36 MATERIALS SCIENCE↗

Materials Data on BaCo4O7 by Materials Project

BaCo4O7 crystallizes in the hexagonal P6_3mc space group. The structure is three-dimensional. Ba2+ is bonded to twelve O2- atoms to form distorted BaO12 cuboctahedra that share corners with twelve equivalent BaO12 cuboctahedra and edges with twelve CoO4 tetrahedra. There are a spread of Ba–O bond distances ranging from 2.95–3.31 Å. There are two inequivalent Co3+ sites. In the first Co3+ site, Co3+ is bonded to four O2- atoms to form CoO4 tetrahedra that share corners with six CoO4 tetrahedra and edges with three equivalent BaO12 cuboctahedra. There are a spread of Co–O bond distances ranging from 1.78–2.01 Å. In the second Co3+ site, Co3+ is bonded to four O2- atoms to form CoO4 tetrahedra that share corners with six equivalent CoO4 tetrahedra and edges with three equivalent BaO12 cuboctahedra. There is three shorter (1.82 Å) and one longer (1.90 Å) Co–O bond length. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 120 degrees geometry to two equivalent Ba2+ and two Co3+ atoms. In the second O2- site, O2- is bonded in a tetrahedral geometry to four Co3+ atoms. In the third O2- site, O2- is bonded in a distorted water-like geometry to two equivalent Ba2+ and two equivalent Co3+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on Ba2Co2O5 by Materials Project

Ba2Co2O5 crystallizes in the orthorhombic Ima2 space group. The structure is three-dimensional. Ba2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Ba–O bond distances ranging from 2.69–3.07 Å. There are two inequivalent Co3+ sites. In the first Co3+ site, Co3+ is bonded in a distorted square co-planar geometry to four equivalent O2- atoms. All Co–O bond lengths are 2.01 Å. In the second Co3+ site, Co3+ is bonded to four O2- atoms to form corner-sharing CoO4 tetrahedra. There are a spread of Co–O bond distances ranging from 1.78–1.92 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded to four equivalent Ba2+ and two equivalent Co3+ atoms to form a mixture of distorted face, edge, and corner-sharing OBa4Co2 octahedra. The corner-sharing octahedral tilt angles are 1°. In the second O2- site, O2- is bonded in a 1-coordinate geometry to four equivalent Ba2+ and one Co3+ atom. In the third O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Ba2+ and two equivalent Co3+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on BaCoO3 by Materials Project

BaCoO3 is (Cubic) Perovskite structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Ba2+ is bonded to twelve equivalent O2- atoms to form BaO12 cuboctahedra that share corners with twelve equivalent BaO12 cuboctahedra, faces with six equivalent BaO12 cuboctahedra, and faces with eight equivalent CoO6 octahedra. All Ba–O bond lengths are 2.82 Å. Co4+ is bonded to six equivalent O2- atoms to form CoO6 octahedra that share corners with six equivalent CoO6 octahedra and faces with eight equivalent BaO12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Co–O bond lengths are 1.99 Å. O2- is bonded in a distorted linear geometry to four equivalent Ba2+ and two equivalent Co4+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on BaCoO2 by Materials Project

BaCoO2 crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Ba2+ is bonded in a distorted body-centered cubic geometry to eight equivalent O2- atoms. All Ba–O bond lengths are 2.80 Å. Co2+ is bonded in a square co-planar geometry to four equivalent O2- atoms. All Co–O bond lengths are 1.99 Å. O2- is bonded to four equivalent Ba2+ and two equivalent Co2+ atoms to form a mixture of distorted face, edge, and corner-sharing OBa4Co2 octahedra. The corner-sharing octahedra tilt angles range from 0–60°.

36 MATERIALS SCIENCE↗

Materials Data on Ba12(CoO3)11 by Materials Project

Ba12(CoO3)11 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are seven inequivalent Ba2+ sites. In the first Ba2+ site, Ba2+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of Ba–O bond distances ranging from 2.63–3.07 Å. In the second Ba2+ site, Ba2+ is bonded in a 11-coordinate geometry to eleven O2- atoms. There are a spread of Ba–O bond distances ranging from 2.63–3.19 Å. In the third Ba2+ site, Ba2+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of Ba–O bond distances ranging from 2.77–2.98 Å. In the fourth Ba2+ site, Ba2+ is bonded in a 10-coordinate geometry to eight O2- atoms. There are a spread of Ba–O bond distances ranging from 2.58–2.93 Å. In the fifth Ba2+ site, Ba2+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of Ba–O bond distances ranging from 2.62–3.22 Å. In the sixth Ba2+ site, Ba2+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of Ba–O bond distances ranging from 2.57–3.33 Å. In the seventh Ba2+ site, Ba2+ is bonded in a 12-coordinate geometry to ten O2- atoms. There are a spread of Ba–O bond distances ranging from 2.77–3.05 Å. There are six inequivalent Co+3.82+ sites. In the first Co+3.82+ site, Co+3.82+ is bonded in a 6-coordinate geometry to six O2- atoms. There are two shorter (2.00 Å) and four longer (2.16 Å) Co–O bond lengths. In the second Co+3.82+ site, Co+3.82+ is bonded to six O2- atoms to form face-sharing CoO6 octahedra. There are a spread of Co–O bond distances ranging from 1.84–1.97 Å. In the third Co+3.82+ site, Co+3.82+ is bonded to six O2- atoms to form face-sharing CoO6 octahedra. There are a spread of Co–O bond distances ranging from 1.84–1.93 Å. In the fourth Co+3.82+ site, Co+3.82+ is bonded to six O2- atoms to form face-sharing CoO6 octahedra. There is one shorter (1.89 Å) and five longer (1.90 Å) Co–O bond length. In the fifth Co+3.82+ site, Co+3.82+ is bonded to six O2- atoms to form face-sharing CoO6 octahedra. There are a spread of Co–O bond distances ranging from 1.88–1.92 Å. In the sixth Co+3.82+ site, Co+3.82+ is bonded to six O2- atoms to form face-sharing CoO6 octahedra. There are a spread of Co–O bond distances ranging from 1.88–1.92 Å. There are seventeen inequivalent O2- sites. In the first O2- site, O2- is bonded in a 6-coordinate geometry to four Ba2+ and two Co+3.82+ atoms. In the second O2- site, O2- is bonded in a 1-coordinate geometry to three Ba2+ and two Co+3.82+ atoms. In the third O2- site, O2- is bonded in a 3-coordinate geometry to three Ba2+ and two Co+3.82+ atoms. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to four Ba2+ and two Co+3.82+ atoms. In the fifth O2- site, O2- is bonded in a 6-coordinate geometry to four Ba2+ and two Co+3.82+ atoms. In the sixth O2- site, O2- is bonded in a 6-coordinate geometry to four Ba2+ and two Co+3.82+ atoms. In the seventh O2- site, O2- is bonded in a 5-coordinate geometry to three Ba2+ and two Co+3.82+ atoms. In the eighth O2- site, O2- is bonded in a 3-coordinate geometry to four Ba2+ and two Co+3.82+ atoms. In the ninth O2- site, O2- is bonded in a 6-coordinate geometry to four Ba2+ and two Co+3.82+ atoms. In the tenth O2- site, O2- is bonded in a 2-coordinate geometry to four Ba2+ and two equivalent Co+3.82+ atoms. In the eleventh O2- site, O2- is bonded in a 3-coordinate geometry to three Ba2+ and two Co+3.82+ atoms. In the twelfth O2- site, O2- is bonded in a 6-coordinate geometry to four Ba2+ and two Co+3.82+ atoms. In the thirteenth O2- site, O2- is bonded in a 6-coordinate geometry to four Ba2+ and two equivalent Co+3.82+ atoms. In the fourteenth O2- site, O2- is bonded in a 2-coordinate geometry to four Ba2+ and two Co+3.82+ atoms. In the fifteenth O2- site, O2- is bonded in a 5-coordinate geometry to three Ba2+ and two Co+3.82+ atoms. In the sixteenth O2- site, O2- is bonded in a 1-coordinate geometry to three Ba2+ and two Co+3.82+ atoms. In the seventeenth O2- site, O2- is bonded in a 6-coordinate geometry to four Ba2+ and two Co+3.82+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on Ba8(CoO3)7 by Materials Project

Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

36 MATERIALS SCIENCE↗

Materials Data on Ba8Co7O19 by Materials Project

Ba8Co7O19 crystallizes in the orthorhombic Fdd2 space group. The structure is three-dimensional. there are five inequivalent Ba2+ sites. In the first Ba2+ site, Ba2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ba–O bond distances ranging from 2.67–2.89 Å. In the second Ba2+ site, Ba2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ba–O bond distances ranging from 2.63–3.17 Å. In the third Ba2+ site, Ba2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Ba–O bond distances ranging from 2.60–3.40 Å. In the fourth Ba2+ site, Ba2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Ba–O bond distances ranging from 2.72–3.17 Å. In the fifth Ba2+ site, Ba2+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of Ba–O bond distances ranging from 2.76–3.09 Å. There are four inequivalent Co+3.14+ sites. In the first Co+3.14+ site, Co+3.14+ is bonded in a distorted see-saw-like geometry to four O2- atoms. There is two shorter (1.90 Å) and two longer (1.92 Å) Co–O bond length. In the second Co+3.14+ site, Co+3.14+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Co–O bond distances ranging from 1.81–2.55 Å. In the third Co+3.14+ site, Co+3.14+ is bonded to five O2- atoms to form distorted edge-sharing CoO5 trigonal bipyramids. There are a spread of Co–O bond distances ranging from 1.80–2.12 Å. In the fourth Co+3.14+ site, Co+3.14+ is bonded to five O2- atoms to form a mixture of edge and face-sharing CoO5 trigonal bipyramids. There are a spread of Co–O bond distances ranging from 1.84–1.98 Å. There are ten inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to four Ba2+ and two Co+3.14+ atoms. In the second O2- site, O2- is bonded in a 6-coordinate geometry to four Ba2+ and two equivalent Co+3.14+ atoms. In the third O2- site, O2- is bonded in a distorted single-bond geometry to four Ba2+ and one Co+3.14+ atom. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to four Ba2+ and two Co+3.14+ atoms. In the fifth O2- site, O2- is bonded in a 4-coordinate geometry to four Ba2+ and two equivalent Co+3.14+ atoms. In the sixth O2- site, O2- is bonded in a 5-coordinate geometry to three Ba2+ and two Co+3.14+ atoms. In the seventh O2- site, O2- is bonded in a 5-coordinate geometry to three Ba2+ and two Co+3.14+ atoms. In the eighth O2- site, O2- is bonded in a 6-coordinate geometry to four Ba2+ and two Co+3.14+ atoms. In the ninth O2- site, O2- is bonded to three Ba2+ and two Co+3.14+ atoms to form distorted corner-sharing OBa3Co2 trigonal bipyramids. In the tenth O2- site, O2- is bonded in a 2-coordinate geometry to four Ba2+ and two Co+3.14+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on BaCoO2 by Materials Project

BaCoO2 is Cuprite-derived structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional and consists of eight barium molecules and one Lix0CoO2 framework. In the Lix0CoO2 framework, Co2+ is bonded to four equivalent O2- atoms to form corner-sharing CoO4 tetrahedra. All Co–O bond lengths are 1.87 Å. O2- is bonded in a linear geometry to two equivalent Co2+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on Ba2CoO4 by Materials Project

Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

36 MATERIALS SCIENCE↗

Materials Data on Ba2CoO4 by Materials Project

Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

36 MATERIALS SCIENCE↗

Materials Data on BaCoO3 by Materials Project

Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

36 MATERIALS SCIENCE↗

Materials Data on Ba3Co10O17 by Materials Project

Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

36 MATERIALS SCIENCE↗

Materials Data on Ba3CoO5 by Materials Project

Ba3CoO5 crystallizes in the tetragonal I4/mcm space group. The structure is three-dimensional. there are two inequivalent Ba2+ sites. In the first Ba2+ site, Ba2+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are two shorter (2.93 Å) and eight longer (3.07 Å) Ba–O bond lengths. In the second Ba2+ site, Ba2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ba–O bond distances ranging from 2.69–2.95 Å. Co4+ is bonded in a tetrahedral geometry to four equivalent O2- atoms. All Co–O bond lengths are 1.80 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to five Ba2+ and one Co4+ atom. In the second O2- site, O2- is bonded to six Ba2+ atoms to form corner-sharing OBa6 octahedra. The corner-sharing octahedra tilt angles range from 0–34°.

36 MATERIALS SCIENCE↗