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DOE OSTI2020

Materials Data on Ta5Al3C by Materials Project

Ta5Al3C crystallizes in the hexagonal P6_3/mcm space group. The structure is three-dimensional. there are two inequivalent Ta sites. In the first Ta site, Ta is bonded in a 2-coordinate geometry to five equivalent Al and two equivalent C atoms. There are a spread of Ta–Al bond distances ranging from 2.76–3.01 Å. Both Ta–C bond lengths are 2.25 Å. In the second Ta site, Ta is bonded in a 8-coordinate geometry to two equivalent Ta and six equivalent Al atoms. Both Ta–Ta bond lengths are 2.68 Å. All Ta–Al bond lengths are 2.72 Å. Al is bonded in a 9-coordinate geometry to nine Ta atoms. C is bonded to six equivalent Ta atoms to form face-sharing CTa6 octahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ta3Ru by Materials Project

Ta3Ru crystallizes in the orthorhombic Cmmm space group. The structure is three-dimensional. there are two inequivalent Ta sites. In the first Ta site, Ta is bonded in a 2-coordinate geometry to two equivalent Ta and two equivalent Ru atoms. Both Ta–Ta bond lengths are 2.86 Å. Both Ta–Ru bond lengths are 2.67 Å. In the second Ta site, Ta is bonded in a distorted body-centered cubic geometry to eight Ta atoms. All Ta–Ta bond lengths are 2.88 Å. Ru is bonded in a 4-coordinate geometry to four equivalent Ta atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ta5Ga3B by Materials Project

Ta5Ga3B crystallizes in the hexagonal P6_3/mcm space group. The structure is three-dimensional. there are two inequivalent Ta sites. In the first Ta site, Ta is bonded in a 7-coordinate geometry to five equivalent Ga and two equivalent B atoms. There are a spread of Ta–Ga bond distances ranging from 2.72–2.94 Å. Both Ta–B bond lengths are 2.32 Å. In the second Ta site, Ta is bonded in a 6-coordinate geometry to two equivalent Ta and six equivalent Ga atoms. Both Ta–Ta bond lengths are 2.68 Å. All Ta–Ga bond lengths are 2.73 Å. Ga is bonded in a 9-coordinate geometry to nine Ta atoms. B is bonded to six equivalent Ta atoms to form face-sharing BTa6 octahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ba3Ta5O15 by Materials Project

Ba3Ta5O15 crystallizes in the tetragonal P4/mbm space group. The structure is three-dimensional. there are two inequivalent Ba2+ sites. In the first Ba2+ site, Ba2+ is bonded to twelve O2- atoms to form BaO12 cuboctahedra that share faces with two equivalent BaO12 cuboctahedra and faces with eight equivalent TaO6 octahedra. There are eight shorter (2.83 Å) and four longer (2.84 Å) Ba–O bond lengths. In the second Ba2+ site, Ba2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are two shorter (2.87 Å) and four longer (2.89 Å) Ba–O bond lengths. There are two inequivalent Ta+4.80+ sites. In the first Ta+4.80+ site, Ta+4.80+ is bonded to six O2- atoms to form TaO6 octahedra that share corners with six TaO6 octahedra and faces with two equivalent BaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 2–38°. There are a spread of Ta–O bond distances ranging from 1.98–2.07 Å. In the second Ta+4.80+ site, Ta+4.80+ is bonded to six O2- atoms to form corner-sharing TaO6 octahedra. The corner-sharing octahedra tilt angles range from 0–35°. There are four shorter (2.00 Å) and two longer (2.01 Å) Ta–O bond lengths. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a linear geometry to two equivalent Ta+4.80+ atoms. In the second O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Ba2+ and two equivalent Ta+4.80+ atoms. In the third O2- site, O2- is bonded in a distorted linear geometry to one Ba2+ and two equivalent Ta+4.80+ atoms. In the fourth O2- site, O2- is bonded in a distorted linear geometry to two equivalent Ba2+ and two equivalent Ta+4.80+ atoms. In the fifth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two equivalent Ba2+ and two Ta+4.80+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ta5Ge3 by Materials Project

Ta5Ge3 crystallizes in the tetragonal I4/mcm space group. The structure is three-dimensional. there are two inequivalent Ta sites. In the first Ta site, Ta is bonded in a 6-coordinate geometry to six Ge atoms. There are a spread of Ta–Ge bond distances ranging from 2.69–2.98 Å. In the second Ta site, Ta is bonded in a 6-coordinate geometry to two equivalent Ta and four equivalent Ge atoms. Both Ta–Ta bond lengths are 2.60 Å. All Ta–Ge bond lengths are 2.73 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 10-coordinate geometry to ten Ta atoms. In the second Ge site, Ge is bonded in a 10-coordinate geometry to eight equivalent Ta and two equivalent Ge atoms. Both Ge–Ge bond lengths are 2.60 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ta3I7 by Materials Project

Ta3I7 crystallizes in the orthorhombic Cmce space group. The structure is two-dimensional and consists of two Ta3I7 sheets oriented in the (0, 1, 0) direction. there are two inequivalent Ta sites. In the first Ta site, Ta is bonded in a 4-coordinate geometry to four I atoms. All Ta–I bond lengths are 2.84 Å. In the second Ta site, Ta is bonded in a 5-coordinate geometry to five I atoms. There are a spread of Ta–I bond distances ranging from 2.81–3.18 Å. There are five inequivalent I sites. In the first I site, I is bonded in a 2-coordinate geometry to two equivalent Ta atoms. In the second I site, I is bonded in a 2-coordinate geometry to two equivalent Ta atoms. In the third I site, I is bonded in a 2-coordinate geometry to two Ta atoms. In the fourth I site, I is bonded in a distorted bent 120 degrees geometry to two equivalent Ta atoms. In the fifth I site, I is bonded in a 2-coordinate geometry to two Ta atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ta3Br7 by Materials Project

Ta3Br7 crystallizes in the orthorhombic Cmce space group. The structure is two-dimensional and consists of two Ta3Br7 sheets oriented in the (0, 1, 0) direction. there are two inequivalent Ta sites. In the first Ta site, Ta is bonded in a distorted square co-planar geometry to four Br atoms. There are two shorter (2.60 Å) and two longer (2.61 Å) Ta–Br bond lengths. In the second Ta site, Ta is bonded to five Br atoms to form distorted corner-sharing TaBr5 square pyramids. There are a spread of Ta–Br bond distances ranging from 2.61–2.88 Å. There are five inequivalent Br sites. In the first Br site, Br is bonded in a 2-coordinate geometry to two equivalent Ta atoms. In the second Br site, Br is bonded in a 2-coordinate geometry to two equivalent Ta atoms. In the third Br site, Br is bonded in a 2-coordinate geometry to two Ta atoms. In the fourth Br site, Br is bonded in a distorted bent 150 degrees geometry to two equivalent Ta atoms. In the fifth Br site, Br is bonded in a 2-coordinate geometry to two Ta atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ta2I5 by Materials Project

Ta2I5 crystallizes in the triclinic P1 space group. The structure is two-dimensional and consists of one Ta2I5 sheet oriented in the (0, 0, 1) direction. there are two inequivalent Ta sites. In the first Ta site, Ta is bonded in a 5-coordinate geometry to five I atoms. There are a spread of Ta–I bond distances ranging from 2.73–2.99 Å. In the second Ta site, Ta is bonded in a 5-coordinate geometry to five I atoms. There are a spread of Ta–I bond distances ranging from 2.73–3.00 Å. There are five inequivalent I sites. In the first I site, I is bonded in a bent 120 degrees geometry to two Ta atoms. In the second I site, I is bonded in a bent 150 degrees geometry to two Ta atoms. In the third I site, I is bonded in a 2-coordinate geometry to two Ta atoms. In the fourth I site, I is bonded in a 2-coordinate geometry to two Ta atoms. In the fifth I site, I is bonded in a bent 150 degrees geometry to two Ta atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ta9(NiS3)2 by Materials Project

Ta9(NiS3)2 crystallizes in the hexagonal P-62m space group. The structure is three-dimensional. there are two inequivalent Ta sites. In the first Ta site, Ta is bonded to two equivalent Ni and three S atoms to form a mixture of distorted edge and corner-sharing TaNi2S3 trigonal bipyramids. Both Ta–Ni bond lengths are 2.51 Å. There are one shorter (2.40 Å) and two longer (2.53 Å) Ta–S bond lengths. In the second Ta site, Ta is bonded in a 3-coordinate geometry to two equivalent Ni and three S atoms. Both Ta–Ni bond lengths are 2.98 Å. There are two shorter (2.52 Å) and one longer (2.55 Å) Ta–S bond lengths. Ni is bonded in a 6-coordinate geometry to nine Ta atoms. There are two inequivalent S sites. In the first S site, S is bonded in a distorted pentagonal planar geometry to five Ta atoms. In the second S site, S is bonded in a distorted rectangular see-saw-like geometry to four Ta atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ta5Ga3 by Materials Project

Ta5Ga3 crystallizes in the tetragonal I4/mcm space group. The structure is three-dimensional. there are two inequivalent Ta sites. In the first Ta site, Ta is bonded in a 6-coordinate geometry to six Ga atoms. There are a spread of Ta–Ga bond distances ranging from 2.72–2.97 Å. In the second Ta site, Ta is bonded in a 6-coordinate geometry to two equivalent Ta and four equivalent Ga atoms. Both Ta–Ta bond lengths are 2.58 Å. All Ta–Ga bond lengths are 2.73 Å. There are two inequivalent Ga sites. In the first Ga site, Ga is bonded in a 10-coordinate geometry to ten Ta atoms. In the second Ga site, Ga is bonded in a 10-coordinate geometry to eight equivalent Ta and two equivalent Ga atoms. Both Ga–Ga bond lengths are 2.58 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ta5Si3 by Materials Project

Ta5Si3 crystallizes in the tetragonal I4/mcm space group. The structure is three-dimensional. there are two inequivalent Ta sites. In the first Ta site, Ta is bonded in a 6-coordinate geometry to six Si atoms. There are a spread of Ta–Si bond distances ranging from 2.65–2.94 Å. In the second Ta site, Ta is bonded in a 6-coordinate geometry to two equivalent Ta and four equivalent Si atoms. Both Ta–Ta bond lengths are 2.55 Å. All Ta–Si bond lengths are 2.67 Å. There are two inequivalent Si sites. In the first Si site, Si is bonded in a 10-coordinate geometry to ten Ta atoms. In the second Si site, Si is bonded in a 10-coordinate geometry to eight equivalent Ta and two equivalent Si atoms. Both Si–Si bond lengths are 2.55 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on BaTa2O6 by Materials Project

BaTa2O6 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are six inequivalent Ba2+ sites. In the first 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 2.66–3.35 Å. In the second 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 2.70–3.16 Å. In the third Ba2+ site, Ba2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Ba–O bond distances ranging from 2.55–3.27 Å. In the fourth Ba2+ site, Ba2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Ba–O bond distances ranging from 2.57–3.05 Å. In the fifth 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 2.67–3.23 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 2.69–3.11 Å. There are twelve inequivalent Ta5+ sites. In the first Ta5+ site, Ta5+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Ta–O bond distances ranging from 1.83–2.26 Å. In the second Ta5+ site, Ta5+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Ta–O bond distances ranging from 1.77–2.06 Å. In the third Ta5+ site, Ta5+ is bonded to four O2- atoms to form corner-sharing TaO4 tetrahedra. There are a spread of Ta–O bond distances ranging from 1.79–1.92 Å. In the fourth Ta5+ site, Ta5+ is bonded to four O2- atoms to form corner-sharing TaO4 tetrahedra. There are a spread of Ta–O bond distances ranging from 1.82–1.96 Å. In the fifth Ta5+ site, Ta5+ is bonded to four O2- atoms to form corner-sharing TaO4 tetrahedra. There are a spread of Ta–O bond distances ranging from 1.81–1.97 Å. In the sixth Ta5+ site, Ta5+ is bonded to five O2- atoms to form TaO5 trigonal bipyramids that share a cornercorner with one TaO4 tetrahedra and a cornercorner with one TaO5 trigonal bipyramid. There are a spread of Ta–O bond distances ranging from 1.84–2.15 Å. In the seventh Ta5+ site, Ta5+ is bonded to five O2- atoms to form distorted TaO5 trigonal bipyramids that share a cornercorner with one TaO4 tetrahedra and corners with two TaO5 trigonal bipyramids. There are a spread of Ta–O bond distances ranging from 1.82–2.27 Å. In the eighth Ta5+ site, Ta5+ is bonded to five O2- atoms to form TaO5 trigonal bipyramids that share a cornercorner with one TaO4 tetrahedra and a cornercorner with one TaO5 trigonal bipyramid. There are a spread of Ta–O bond distances ranging from 1.82–2.22 Å. In the ninth Ta5+ site, Ta5+ is bonded to five O2- atoms to form distorted TaO5 trigonal bipyramids that share a cornercorner with one TaO4 tetrahedra and a cornercorner with one TaO5 trigonal bipyramid. There are a spread of Ta–O bond distances ranging from 1.80–2.29 Å. In the tenth Ta5+ site, Ta5+ is bonded to four O2- atoms to form TaO4 tetrahedra that share corners with two TaO4 tetrahedra and a cornercorner with one TaO5 trigonal bipyramid. There are a spread of Ta–O bond distances ranging from 1.81–1.97 Å. In the eleventh Ta5+ site, Ta5+ is bonded to four O2- atoms to form TaO4 tetrahedra that share a cornercorner with one TaO4 tetrahedra and a cornercorner with one TaO5 trigonal bipyramid. There are a spread of Ta–O bond distances ranging from 1.82–1.96 Å. In the twelfth Ta5+ site, Ta5+ is bonded to five O2- atoms to form distorted TaO5 trigonal bipyramids that share corners with two TaO4 tetrahedra and a cornercorner with one TaO5 trigonal bipyramid. There are a spread of Ta–O bond distances ranging from 1.80–2.16 Å. There are thirty-six inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to two Ba2+ and two Ta5+ atoms. In the second O2- site, O2- is bonded in a distorted single-bond geometry to two Ba2+ and one Ta5+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to two Ba2+ and one Ta5+ atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+ and one Ta5+ atom. In the fifth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Ba2+ and two Ta5+ atoms. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to two Ba2+ and one Ta5+ atom. In the seventh O2- site, O2- is bonded in a 1-coordinate geometry to two Ba2+ and one Ta5+ atom. In the eighth O2- site, O2- is bonded in a 3-coordinate geometry to two Ba2+ and one Ta5+ atom. In the ninth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to two Ba2+ and one Ta5+ atom. In the tenth O2- site, O2- is bonded in a bent 120 degrees geometry to two Ta5+ atoms. In the eleventh O2- site, O2- is bonded in a 2-coordinate geometry to one Ba2+ and two Ta5+ atoms. In the twelfth O2- site, O2- is bonded in a bent 150 degrees geometry to two Ta5+ atoms. In the thirteenth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Ba2+ and two Ta5+ atoms. In the fourteenth O2- site, O2- is bonded in a 1-coordinate geometry to one Ba2+ and one Ta5+ atom. In the fifteenth O2- site, O2- is bonded in a 2-coordinate geometry to one Ba2+ and two Ta5+ atoms. In the sixteenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Ba2+ and one Ta5+ atom. In the seventeenth O2- site, O2- is bonded in a single-bond geometry to one Ta5+ atom. In the eighteenth O2- site, O2- is bonded in a bent 120 degrees geometry to one Ba2+ and two Ta5+ atoms. In the nineteenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Ta5+ atoms. In the twentieth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ba2+ and two Ta5+ atoms. In the twenty-first O2- site, O2- is bonded in a bent 150 degrees geometry to two Ta5+ atoms. In the twenty-second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ba2+ and one Ta5+ atom. In the twenty-third O2- site, O2- is bonded in a 1-coordinate geometry to two Ba2+ and one Ta5+ atom. In the twenty-fourth O2- site, O2- is bonded in a distorted single-bond geometry to two Ba2+ and one Ta5+ atom. In the twenty-fifth O2- site, O2- is bonded in a distorted single-bond geometry to two Ba2+ and one Ta5+ atom. In the twenty-sixth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Ta5+ atoms. In the twenty-seventh O2- site, O2- is bonded in a 1-coordinate geometry to one Ba2+ and two Ta5+ atoms. In the twenty-eighth O2- site, O2- is bonded in a 3-coordinate geometry to one Ba2+ and two Ta5+ atoms. In the twenty-ninth O2- site, O2- is bonded in a 1-coordinate geometry to one Ba2+ and two Ta5+ atoms. In the thirtieth O2- site, O2- is bonded in a 1-coordinate geometry to two Ba2+ and one Ta5+ atom. In the thirty-first O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+ and one Ta5+ atom. In the thirty-second O2- site, O2- is bonded in a distorted single-bond geometry to two Ba2+ and one Ta5+ atom. In the thirty-third O2- site, O2- is bonded in a distorted single-bond geometry to two Ba2+ and one Ta5+ atom. In the thirty-fourth O2- site, O2- is bonded in a bent 150 degrees geometry to two Ta5+ atoms. In the thirty-fifth O2- site, O2- is bonded in a bent 150 degrees geometry to two Ta5+ atoms. In the thirty-sixth O2- site, O2- is bonded in a 2-coordinate geometry to one Ba2+ and two Ta5+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LiTa3O8 by Materials Project

LiTa3O8 crystallizes in the monoclinic Pm space group. The structure is three-dimensional. there are eight inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded in a 3-coordinate geometry to five O2- atoms. There are a spread of Li–O bond distances ranging from 1.90–2.44 Å. In the second Li1+ site, Li1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Li–O bond distances ranging from 2.17–2.63 Å. In the third Li1+ site, Li1+ is bonded in a 1-coordinate geometry to seven O2- atoms. There are a spread of Li–O bond distances ranging from 1.96–2.70 Å. In the fourth Li1+ site, Li1+ is bonded in a 1-coordinate geometry to seven O2- atoms. There are a spread of Li–O bond distances ranging from 1.95–2.70 Å. In the fifth Li1+ site, Li1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Li–O bond distances ranging from 2.17–2.74 Å. In the sixth Li1+ site, Li1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Li–O bond distances ranging from 1.88–2.37 Å. In the seventh Li1+ site, Li1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Li–O bond distances ranging from 2.15–2.42 Å. In the eighth Li1+ site, Li1+ is bonded in a 1-coordinate geometry to seven O2- atoms. There are a spread of Li–O bond distances ranging from 1.95–2.67 Å. There are twelve inequivalent Ta5+ sites. In the first Ta5+ site, Ta5+ is bonded to six O2- atoms to form TaO6 octahedra that share corners with six TaO6 octahedra and an edgeedge with one TaO7 pentagonal bipyramid. The corner-sharing octahedra tilt angles range from 7–39°. There are a spread of Ta–O bond distances ranging from 1.94–2.11 Å. In the second Ta5+ site, Ta5+ is bonded to six O2- atoms to form TaO6 octahedra that share corners with six TaO6 octahedra and an edgeedge with one TaO7 pentagonal bipyramid. The corner-sharing octahedra tilt angles range from 16–39°. There are a spread of Ta–O bond distances ranging from 1.92–2.15 Å. In the third Ta5+ site, Ta5+ is bonded to seven O2- atoms to form TaO7 pentagonal bipyramids that share corners with two equivalent TaO7 pentagonal bipyramids and edges with five TaO6 octahedra. There are a spread of Ta–O bond distances ranging from 1.94–2.15 Å. In the fourth Ta5+ site, Ta5+ is bonded to six O2- atoms to form TaO6 octahedra that share corners with six TaO6 octahedra and an edgeedge with one TaO7 pentagonal bipyramid. The corner-sharing octahedra tilt angles range from 18–40°. There are a spread of Ta–O bond distances ranging from 1.91–2.07 Å. In the fifth Ta5+ site, Ta5+ is bonded to six O2- atoms to form TaO6 octahedra that share corners with six TaO6 octahedra and an edgeedge with one TaO7 pentagonal bipyramid. The corner-sharing octahedra tilt angles range from 13–40°. There are a spread of Ta–O bond distances ranging from 1.93–2.06 Å. In the sixth Ta5+ site, Ta5+ is bonded to six O2- atoms to form TaO6 octahedra that share corners with six TaO6 octahedra and an edgeedge with one TaO7 pentagonal bipyramid. The corner-sharing octahedra tilt angles range from 0–39°. There are a spread of Ta–O bond distances ranging from 1.97–2.10 Å. In the seventh Ta5+ site, Ta5+ is bonded to six O2- atoms to form TaO6 octahedra that share corners with six TaO6 octahedra and an edgeedge with one TaO7 pentagonal bipyramid. The corner-sharing octahedra tilt angles range from 0–39°. There are a spread of Ta–O bond distances ranging from 1.96–2.12 Å. In the eighth Ta5+ site, Ta5+ is bonded to six O2- atoms to form TaO6 octahedra that share corners with six TaO6 octahedra and an edgeedge with one TaO7 pentagonal bipyramid. The corner-sharing octahedra tilt angles range from 13–40°. There are a spread of Ta–O bond distances ranging from 1.95–2.06 Å. In the ninth Ta5+ site, Ta5+ is bonded to seven O2- atoms to form TaO7 pentagonal bipyramids that share corners with two equivalent TaO7 pentagonal bipyramids and edges with five TaO6 octahedra. There are a spread of Ta–O bond distances ranging from 1.94–2.16 Å. In the tenth Ta5+ site, Ta5+ is bonded to six O2- atoms to form TaO6 octahedra that share corners with six TaO6 octahedra and an edgeedge with one TaO7 pentagonal bipyramid. The corner-sharing octahedra tilt angles range from 18–40°. There are a spread of Ta–O bond distances ranging from 1.94–2.06 Å. In the eleventh Ta5+ site, Ta5+ is bonded to six O2- atoms to form TaO6 octahedra that share corners with six TaO6 octahedra and an edgeedge with one TaO7 pentagonal bipyramid. The corner-sharing octahedra tilt angles range from 15–37°. There are a spread of Ta–O bond distances ranging from 1.93–2.14 Å. In the twelfth Ta5+ site, Ta5+ is bonded to six O2- atoms to form TaO6 octahedra that share corners with six TaO6 octahedra and an edgeedge with one TaO7 pentagonal bipyramid. The corner-sharing octahedra tilt angles range from 7–37°. There are a spread of Ta–O bond distances ranging from 1.94–2.14 Å. There are forty-four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+ and two Ta5+ atoms. In the second O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+ and two Ta5+ atoms. In the third O2- site, O2- is bonded in a T-shaped geometry to one Li1+ and two equivalent Ta5+ atoms. In the fourth O2- site, O2- is bonded in a linear geometry to two equivalent Ta5+ atoms. In the fifth O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+ and two equivalent Ta5+ atoms. In the sixth O2- site, O2- is bonded in a distorted trigonal planar geometry to three Ta5+ atoms. In the seventh O2- site, O2- is bonded in a T-shaped geometry to one Li1+ and two equivalent Ta5+ atoms. In the eighth O2- site, O2- is bonded in a bent 150 degrees geometry to two Ta5+ atoms. In the ninth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three Ta5+ atoms. In the tenth O2- site, O2- is bonded in a 4-coordinate geometry to one Li1+ and three Ta5+ atoms. In the eleventh O2- site, O2- is bonded in a linear geometry to two equivalent Ta5+ atoms. In the twelfth O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+ and two equivalent Ta5+ atoms. In the thirteenth O2- site, O2- is bonded in a linear geometry to two equivalent Ta5+ atoms. In the fourteenth O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+ and two equivalent Ta5+ atoms. In the fifteenth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three Ta5+ atoms. In the sixteenth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Li1+ and two Ta5+ atoms. In the seventeenth O2- site, O2- is bonded in a distorted T-shaped geometry to two Li1+ and two equivalent Ta5+ atoms. In the eighteenth O2- site, O2- is bonded in a 3-coordinate geometry to three Ta5+ atoms. In the nineteenth O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+ and two equivalent Ta5+ atoms. In the twentieth O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+ and two equivalent Ta5+ atoms. In the twenty-first O2- site, O2- is bonded in a distorted see-saw-like geometry to two Li1+ and two equivalent Ta5+ atoms. In the twenty-second O2- site, O2- is bonded in a 4-coordinate geometry to two Li1+ and two Ta5+ atoms. In the twenty-third O2- site, O2- is bonded in a distorted square co-planar geometry to two Li1+ and two Ta5+ atoms. In the twenty-fourth O2- site, O2- is bonded in a 4-coordinate geometry to two Li1+ and two Ta5+ atoms. In the twenty-fifth O2- site, O2- is bonded in a 4-coordinate geometry to two Li1+ and two equivalent Ta5+ atoms. In the twenty-sixth O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+ and two equivalent Ta5+ atoms. In the twenty-seventh O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+ and two equivalent Ta5+ atoms. In the twenty-eighth O2- site, O2- is bonded in a 3-coordinate geometry to three Ta5+ atoms. In the twenty-ninth O2- site, O2- is bonded in a distorted T-shaped geometry to two Li1+ and two equivalent Ta5+ atoms. In the thirtieth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Li1+ and two Ta5+ atoms. In the thirty-first O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three Ta5+ atoms. In the thirty-second O2- site, O2- is bonded in a linear geometry to two equivalent Ta5+ atoms. In the thirty-third O2- site, O2- is bonded in a distorted linear geometry to one Li1+ and two equivalent Ta5+ atoms. In the thirty-fourth O2- site, O2- is bonded in a 4-coordinate geometry to one Li1+ and three Ta5+ atoms. In the thirty-fifth O2- site, O2- is bonded in a linear geometry to two equivalent Ta5+ atoms. In the thirty-sixth O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+ and two equivalent Ta5+ atoms. In the thirty-seventh O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three Ta5+ atoms. In the thirty-eighth O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+ and two Ta5+ atoms. In the thirty-ninth O2- site, O2- is bonded in a 3-coordinate geometry to two Li1+ and two equivalent Ta5+ atoms. In the fortieth O2- site, O2- is bonded in a distorted trigonal planar geometry to three Ta5+ atoms. In the forty-first O2- site, O2- is bonded in a bent 150 degrees geometry to two equivalent Ta5+ atoms. In the forty-second O2- site, O2- is bonded in a T-shaped geometry to one Li1+ and two equivalent Ta5+ atoms. In the forty-third O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+ and two equivalent Ta5+ atoms. In the forty-fourth O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+ and two Ta5+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ta3Ru by Materials Project

Ta3Ru is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. there are two inequivalent Ta sites. In the first Ta site, Ta is bonded to four equivalent Ta and four equivalent Ru atoms to form a mixture of distorted edge, corner, and face-sharing TaTa4Ru4 tetrahedra. All Ta–Ta bond lengths are 2.80 Å. All Ta–Ru bond lengths are 2.80 Å. In the second Ta site, Ta is bonded in a 8-coordinate geometry to eight equivalent Ta and six equivalent Ru atoms. All Ta–Ru bond lengths are 3.24 Å. Ru is bonded in a distorted body-centered cubic geometry to fourteen Ta atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ta7S12 by Materials Project

Ta7S12 crystallizes in the monoclinic C2/m space group. The structure is two-dimensional and consists of one Ta7S12 sheet oriented in the (0, 0, 1) direction. there are three inequivalent Ta+3.43+ sites. In the first Ta+3.43+ site, Ta+3.43+ is bonded to six S2- atoms to form a mixture of distorted face and edge-sharing TaS6 pentagonal pyramids. There are three shorter (2.47 Å) and three longer (2.51 Å) Ta–S bond lengths. In the second Ta+3.43+ site, Ta+3.43+ is bonded to six S2- atoms to form a mixture of distorted edge and corner-sharing TaS6 pentagonal pyramids. The corner-sharing octahedral tilt angles are 45°. There are three shorter (2.48 Å) and three longer (2.50 Å) Ta–S bond lengths. In the third Ta+3.43+ site, Ta+3.43+ is bonded to six equivalent S2- atoms to form a mixture of face and corner-sharing TaS6 octahedra. All Ta–S bond lengths are 2.47 Å. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded to four Ta+3.43+ atoms to form a mixture of distorted edge and corner-sharing STa4 trigonal pyramids. In the second S2- site, S2- is bonded in a 3-coordinate geometry to three Ta+3.43+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TaMnGe by Materials Project

TaMnGe crystallizes in the orthorhombic Ima2 space group. The structure is three-dimensional. there are two inequivalent Ta sites. In the first Ta site, Ta is bonded in a 4-coordinate geometry to two equivalent Mn and four Ge atoms. There are one shorter (2.72 Å) and one longer (2.95 Å) Ta–Mn bond lengths. There are a spread of Ta–Ge bond distances ranging from 2.53–2.63 Å. In the second Ta site, Ta is bonded in a 4-coordinate geometry to two equivalent Mn and four Ge atoms. Both Ta–Mn bond lengths are 2.84 Å. There are two shorter (2.59 Å) and two longer (2.64 Å) Ta–Ge bond lengths. There are three inequivalent Mn sites. In the first Mn site, Mn is bonded in a 11-coordinate geometry to six Ta and five Ge atoms. There are a spread of Mn–Ge bond distances ranging from 2.79–2.97 Å. In the second Mn site, Mn is bonded in a 5-coordinate geometry to five Ge atoms. There are a spread of Mn–Ge bond distances ranging from 2.58–2.75 Å. In the third Mn site, Mn is bonded in a 5-coordinate geometry to five Ge atoms. There are a spread of Mn–Ge bond distances ranging from 2.66–2.89 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to three Ta and six Mn atoms. In the second Ge site, Ge is bonded in a 9-coordinate geometry to six Ta and three Mn atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on La4TaCo33 by Materials Project

La4TaCo33 crystallizes in the monoclinic Cm space group. The structure is three-dimensional. there are four inequivalent La sites. In the first La site, La is bonded in a 9-coordinate geometry to one Ta and eighteen Co atoms. The La–Ta bond length is 3.20 Å. There are a spread of La–Co bond distances ranging from 3.00–3.38 Å. In the second La site, La is bonded in a 10-coordinate geometry to nineteen Co atoms. There are a spread of La–Co bond distances ranging from 3.03–3.27 Å. In the third La site, La is bonded in a 10-coordinate geometry to nineteen Co atoms. There are a spread of La–Co bond distances ranging from 3.01–3.27 Å. In the fourth La site, La is bonded in a 10-coordinate geometry to nineteen Co atoms. There are a spread of La–Co bond distances ranging from 3.00–3.26 Å. Ta is bonded in a 1-coordinate geometry to one La and thirteen Co atoms. There are a spread of Ta–Co bond distances ranging from 2.39–2.71 Å. There are twenty-one inequivalent Co sites. In the first Co site, Co is bonded in a 12-coordinate geometry to two La and ten Co atoms. There are a spread of Co–Co bond distances ranging from 2.38–2.65 Å. In the second Co site, Co is bonded in a 12-coordinate geometry to two La, one Ta, and nine Co atoms. There are a spread of Co–Co bond distances ranging from 2.38–2.73 Å. In the third Co site, Co is bonded to two La and ten Co atoms to form distorted CoLa2Co10 cuboctahedra that share corners with fourteen CoLa3TaCo8 cuboctahedra, edges with two CoLa3TaCo8 cuboctahedra, and faces with fourteen CoLa3Co9 cuboctahedra. There are a spread of Co–Co bond distances ranging from 2.39–2.67 Å. In the fourth Co site, Co is bonded to two La, one Ta, and nine Co atoms to form distorted CoLa2TaCo9 cuboctahedra that share corners with twelve CoLa3Co9 cuboctahedra, edges with four CoLa3Co9 cuboctahedra, and faces with twelve CoLa3TaCo8 cuboctahedra. There are a spread of Co–Co bond distances ranging from 2.40–2.69 Å. In the fifth Co site, Co is bonded in a 12-coordinate geometry to two La, one Ta, and nine Co atoms. There are a spread of Co–Co bond distances ranging from 2.38–2.76 Å. In the sixth Co site, Co is bonded in a 12-coordinate geometry to two La and ten Co atoms. There are a spread of Co–Co bond distances ranging from 2.39–2.66 Å. In the seventh Co site, Co is bonded in a 12-coordinate geometry to two La, one Ta, and nine Co atoms. There are a spread of Co–Co bond distances ranging from 2.39–2.56 Å. In the eighth Co site, Co is bonded to two La and ten Co atoms to form CoLa2Co10 cuboctahedra that share corners with fourteen CoLa3TaCo8 cuboctahedra, edges with eight CoLa3Co9 cuboctahedra, and faces with ten CoLa3TaCo8 cuboctahedra. There are a spread of Co–Co bond distances ranging from 2.41–2.58 Å. In the ninth Co site, Co is bonded in a 12-coordinate geometry to two La, one Ta, and nine Co atoms. There are a spread of Co–Co bond distances ranging from 2.39–2.54 Å. In the tenth Co site, Co is bonded to two La and ten Co atoms to form CoLa2Co10 cuboctahedra that share corners with sixteen CoLa3TaCo8 cuboctahedra, edges with seven CoLa3Co9 cuboctahedra, and faces with twelve CoLa3Co9 cuboctahedra. There are a spread of Co–Co bond distances ranging from 2.41–2.59 Å. In the eleventh Co site, Co is bonded to three La and nine Co atoms to form CoLa3Co9 cuboctahedra that share corners with sixteen CoLa3TaCo8 cuboctahedra, edges with eight CoLa3Co9 cuboctahedra, and faces with nine CoLa3TaCo8 cuboctahedra. There are two shorter (2.50 Å) and one longer (2.60 Å) Co–Co bond lengths. In the twelfth Co site, Co is bonded to three La and nine Co atoms to form CoLa3Co9 cuboctahedra that share corners with seventeen CoLa3Co9 cuboctahedra, edges with nine CoLa3TaCo8 cuboctahedra, and faces with twelve CoLa3Co9 cuboctahedra. There are two shorter (2.49 Å) and one longer (2.59 Å) Co–Co bond lengths. In the thirteenth Co site, Co is bonded to three La and nine Co atoms to form CoLa3Co9 cuboctahedra that share corners with fourteen CoLa3Co9 cuboctahedra, edges with six CoLa3TaCo8 cuboctahedra, and faces with thirteen CoLa3Co9 cuboctahedra. There are a spread of Co–Co bond distances ranging from 2.50–2.58 Å. In the fourteenth Co site, Co is bonded to three La and nine Co atoms to form CoLa3Co9 cuboctahedra that share corners with fifteen CoLa3Co9 cuboctahedra, edges with seven CoLa3Co9 cuboctahedra, and faces with twelve CoLa3TaCo8 cuboctahedra. There are a spread of Co–Co bond distances ranging from 2.49–2.56 Å. In the fifteenth Co site, Co is bonded to three La and nine Co atoms to form a mixture of edge, corner, and face-sharing CoLa3Co9 cuboctahedra. The Co–Co bond length is 2.60 Å. In the sixteenth Co site, Co is bonded to three La, one Ta, and eight Co atoms to form distorted CoLa3TaCo8 cuboctahedra that share corners with seventeen CoLa3Co9 cuboctahedra, edges with five CoLa3TaCo8 cuboctahedra, and faces with twelve CoLa3TaCo8 cuboctahedra. In the seventeenth Co site, Co is bonded to three La, one Ta, and eight Co atoms to form distorted CoLa3TaCo8 cuboctahedra that share corners with fifteen CoLa3TaCo8 cuboctahedra, edges with seven CoLa3Co9 cuboctahedra, and faces with ten CoLa3TaCo8 cuboctahedra. In the eighteenth Co site, Co is bonded to three La and nine Co atoms to form a mixture of edge, corner, and face-sharing CoLa3Co9 cuboctahedra. The Co–Co bond length is 2.58 Å. In the nineteenth Co site, Co is bonded in a 2-coordinate geometry to one La and thirteen Co atoms. The Co–Co bond length is 2.33 Å. In the twentieth Co site, Co is bonded in a 2-coordinate geometry to one La and thirteen Co atoms. In the twenty-first Co site, Co is bonded in a 1-coordinate geometry to one La, one Ta, and twelve Co atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ta3Re by Materials Project

Ta3Re is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. there are two inequivalent Ta sites. In the first Ta site, Ta is bonded to four equivalent Ta and four equivalent Re atoms to form a mixture of distorted corner, edge, and face-sharing TaTa4Re4 tetrahedra. All Ta–Ta bond lengths are 2.82 Å. All Ta–Re bond lengths are 2.82 Å. In the second Ta site, Ta is bonded in a 8-coordinate geometry to eight equivalent Ta and six equivalent Re atoms. All Ta–Re bond lengths are 3.25 Å. Re is bonded in a distorted body-centered cubic geometry to fourteen Ta atoms.

36 MATERIALS SCIENCE↗