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DOE OSTI2020

Materials Data on Ta4GaSe8 by Materials Project

GaTa4Se8 crystallizes in the cubic F-43m space group. The structure is three-dimensional. Ta+3.25+ is bonded to six Se2- atoms to form distorted TaSe6 pentagonal pyramids that share corners with three equivalent GaSe4 tetrahedra and edges with six equivalent TaSe6 pentagonal pyramids. There are three shorter (2.55 Å) and three longer (2.80 Å) Ta–Se bond lengths. Ga3+ is bonded to four equivalent Se2- atoms to form GaSe4 tetrahedra that share corners with twelve equivalent TaSe6 pentagonal pyramids. All Ga–Se bond lengths are 2.47 Å. There are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 3-coordinate geometry to three equivalent Ta+3.25+ atoms. In the second Se2- site, Se2- is bonded to three equivalent Ta+3.25+ and one Ga3+ atom to form a mixture of edge and corner-sharing SeTa3Ga tetrahedra.

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Materials Data on K3TaO8 by Materials Project

K3TaO8 crystallizes in the tetragonal I-42m space group. The structure is three-dimensional. there are two inequivalent K sites. In the first K site, K is bonded in a 4-coordinate geometry to four equivalent O atoms. All K–O bond lengths are 2.72 Å. In the second K site, K is bonded to eight O atoms to form KO8 hexagonal bipyramids that share corners with four equivalent TaO8 hexagonal bipyramids, corners with four equivalent OK3TaO trigonal bipyramids, and edges with two equivalent TaO8 hexagonal bipyramids. There are four shorter (2.82 Å) and four longer (2.88 Å) K–O bond lengths. Ta is bonded to eight O atoms to form distorted TaO8 hexagonal bipyramids that share corners with four equivalent KO8 hexagonal bipyramids, corners with four equivalent OK3TaO trigonal bipyramids, and edges with two equivalent KO8 hexagonal bipyramids. There are four shorter (2.03 Å) and four longer (2.08 Å) Ta–O bond lengths. There are two inequivalent O sites. In the first O site, O is bonded to three K, one Ta, and one O atom to form distorted OK3TaO trigonal bipyramids that share a cornercorner with one KO8 hexagonal bipyramid, a cornercorner with one TaO8 hexagonal bipyramid, corners with ten equivalent OK3TaO trigonal bipyramids, and an edgeedge with one OK3TaO trigonal bipyramid. The O–O bond length is 1.51 Å. In the second O site, O is bonded in a 7-coordinate geometry to one K, one Ta, and one O atom.

36 MATERIALS SCIENCE↗
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Materials Data on Cs8Ta6O19 by Materials Project

Cs8Ta6O19 crystallizes in the tetragonal I4/m space group. The structure is three-dimensional. Cs1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Cs–O bond distances ranging from 2.93–3.42 Å. There are four inequivalent Ta5+ sites. In the first Ta5+ site, Ta5+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Ta–O bond distances ranging from 1.83–2.39 Å. In the second Ta5+ site, Ta5+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Ta–O bond distances ranging from 1.83–2.39 Å. In the third Ta5+ site, Ta5+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Ta–O bond distances ranging from 1.83–2.39 Å. In the fourth Ta5+ site, Ta5+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Ta–O bond distances ranging from 1.84–2.36 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to four equivalent Cs1+ and one Ta5+ atom. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two equivalent Cs1+ and two Ta5+ atoms. In the third O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two equivalent Cs1+ and two Ta5+ atoms. In the fourth O2- site, O2- is bonded in an octahedral geometry to six Ta5+ atoms. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to four equivalent Cs1+ and one Ta5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Rb3TaO8 by Materials Project

Rb3TaO8 crystallizes in the tetragonal I-42m space group. The structure is three-dimensional. there are two inequivalent Rb sites. In the first Rb site, Rb is bonded to eight O atoms to form RbO8 hexagonal bipyramids that share corners with four equivalent TaO8 hexagonal bipyramids, corners with four equivalent ORb3TaO trigonal bipyramids, and edges with two equivalent TaO8 hexagonal bipyramids. There are four shorter (2.98 Å) and four longer (3.01 Å) Rb–O bond lengths. In the second Rb site, Rb is bonded in a 4-coordinate geometry to twelve O atoms. There are a spread of Rb–O bond distances ranging from 2.86–3.41 Å. Ta is bonded to eight O atoms to form distorted TaO8 hexagonal bipyramids that share corners with four equivalent RbO8 hexagonal bipyramids, corners with four equivalent ORb3TaO trigonal bipyramids, and edges with two equivalent RbO8 hexagonal bipyramids. There are four shorter (2.03 Å) and four longer (2.08 Å) Ta–O bond lengths. There are two inequivalent O sites. In the first O site, O is bonded in a 1-coordinate geometry to five Rb, one Ta, and one O atom. The O–O bond length is 1.51 Å. In the second O site, O is bonded to three Rb, one Ta, and one O atom to form distorted ORb3TaO trigonal bipyramids that share a cornercorner with one RbO8 hexagonal bipyramid, a cornercorner with one TaO8 hexagonal bipyramid, corners with ten equivalent ORb3TaO trigonal bipyramids, and an edgeedge with one ORb3TaO trigonal bipyramid.

36 MATERIALS SCIENCE↗
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Materials Data on Ta3(BiS3)2 by Materials Project

Ta3(BiS3)2 crystallizes in the hexagonal P6_3/mcm space group. The structure is three-dimensional. Ta+3.33+ is bonded to six S2- atoms to form distorted edge-sharing TaS6 pentagonal pyramids. There are two shorter (2.47 Å) and four longer (2.48 Å) Ta–S bond lengths. Bi1+ is bonded in a linear geometry to two equivalent S2- atoms. Both Bi–S bond lengths are 2.86 Å. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a 3-coordinate geometry to three equivalent Ta+3.33+ atoms. In the second S2- site, S2- is bonded in a distorted rectangular see-saw-like geometry to three equivalent Ta+3.33+ and one Bi1+ atom.

36 MATERIALS SCIENCE↗
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Materials Data on LiTa3O8 by Materials Project

LiTa3O8 crystallizes in the orthorhombic Pmmn space group. The structure is three-dimensional. there are two inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded in a 3-coordinate geometry to four O2- atoms. There are a spread of Li–O bond distances ranging from 1.98–2.51 Å. In the second 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 2.20–2.54 Å. There are four 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 0–37°. There are a spread of Ta–O bond distances ranging from 1.95–2.11 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 7–40°. There are a spread of Ta–O bond distances ranging from 1.94–2.05 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 1.93–2.14 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 19–40°. There are four shorter (1.96 Å) and two longer (2.06 Å) Ta–O bond lengths. There are fourteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+ and two equivalent Ta5+ atoms. In the second O2- site, O2- is bonded in a 3-coordinate geometry to three Ta5+ atoms. In the third O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Li1+ and two equivalent Ta5+ atoms. In the fourth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three Ta5+ atoms. In the fifth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Li1+ and two Ta5+ atoms. In the sixth O2- site, O2- is bonded in a 3-coordinate geometry to three Ta5+ atoms. In the seventh O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Li1+ and two Ta5+ atoms. In the eighth O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+ and two equivalent Ta5+ atoms. In the ninth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two equivalent Ta5+ atoms. In the tenth O2- site, O2- is bonded in a bent 150 degrees geometry to two equivalent 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 linear geometry to two equivalent Ta5+ atoms. In the thirteenth O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+ and two equivalent Ta5+ atoms. In the fourteenth O2- site, O2- is bonded in a distorted square co-planar geometry to two equivalent Li1+ and two equivalent Ta5+ atoms.

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Materials Data on Cs3TaO8 by Materials Project

Cs3TaO8 crystallizes in the tetragonal I-42m space group. The structure is three-dimensional. there are two inequivalent Cs sites. In the first Cs site, Cs is bonded to eight O atoms to form CsO8 hexagonal bipyramids that share corners with four equivalent TaO8 hexagonal bipyramids, corners with four equivalent OCs3TaO trigonal bipyramids, and edges with two equivalent TaO8 hexagonal bipyramids. There are four shorter (3.07 Å) and four longer (3.26 Å) Cs–O bond lengths. In the second Cs site, Cs is bonded in a 4-coordinate geometry to twelve O atoms. There are a spread of Cs–O bond distances ranging from 3.03–3.56 Å. Ta is bonded to eight O atoms to form distorted TaO8 hexagonal bipyramids that share corners with four equivalent CsO8 hexagonal bipyramids, corners with four equivalent OCs3TaO trigonal bipyramids, and edges with two equivalent CsO8 hexagonal bipyramids. There are four shorter (2.03 Å) and four longer (2.08 Å) Ta–O bond lengths. There are two inequivalent O sites. In the first O site, O is bonded to three Cs, one Ta, and one O atom to form distorted OCs3TaO trigonal bipyramids that share a cornercorner with one CsO8 hexagonal bipyramid, a cornercorner with one TaO8 hexagonal bipyramid, corners with ten equivalent OCs3TaO trigonal bipyramids, and an edgeedge with one OCs3TaO trigonal bipyramid. The O–O bond length is 1.51 Å. In the second O site, O is bonded in a 1-coordinate geometry to five Cs, one Ta, and one O atom.

36 MATERIALS SCIENCE↗
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Materials Data on Cs3Ta5O14 by Materials Project

Cs3Ta5O14 crystallizes in the orthorhombic Pbam space group. The structure is three-dimensional. there are three inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Cs–O bond distances ranging from 3.27–3.42 Å. In the second Cs1+ site, Cs1+ is bonded in a 1-coordinate geometry to nine O2- atoms. There are a spread of Cs–O bond distances ranging from 2.86–3.55 Å. In the third Cs1+ site, Cs1+ is bonded in a 1-coordinate geometry to seven O2- atoms. There are a spread of Cs–O bond distances ranging from 2.79–3.44 Å. There are four inequivalent Ta5+ sites. In the first Ta5+ site, Ta5+ is bonded to six O2- atoms to form TaO6 octahedra that share corners with five TaO6 octahedra and a cornercorner with one TaO5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 28–43°. There are a spread of Ta–O bond distances ranging from 1.90–2.20 Å. In the second Ta5+ site, Ta5+ is bonded to six O2- atoms to form TaO6 octahedra that share corners with two equivalent TaO6 octahedra, corners with three equivalent TaO5 trigonal bipyramids, and an edgeedge with one TaO6 octahedra. The corner-sharing octahedral tilt angles are 35°. There are a spread of Ta–O bond distances ranging from 1.94–2.27 Å. In the third Ta5+ site, Ta5+ is bonded to six O2- atoms to form corner-sharing TaO6 octahedra. The corner-sharing octahedra tilt angles range from 35–43°. There are a spread of Ta–O bond distances ranging from 1.96–2.07 Å. In the fourth Ta5+ site, Ta5+ is bonded to five O2- atoms to form TaO5 trigonal bipyramids that share corners with five TaO6 octahedra and an edgeedge with one TaO5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 40–57°. There are a spread of Ta–O bond distances ranging from 1.85–2.16 Å. There are ten inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Cs1+ and two Ta5+ atoms. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to three Ta5+ atoms. In the third O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Cs1+ and two equivalent Ta5+ atoms. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to one Cs1+ and two equivalent Ta5+ atoms. In the fifth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Cs1+ and two Ta5+ atoms. In the sixth O2- site, O2- is bonded in a bent 150 degrees geometry to one Cs1+ and two equivalent Ta5+ atoms. In the seventh O2- site, O2- is bonded in a 2-coordinate geometry to two Cs1+ and two Ta5+ atoms. In the eighth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Cs1+ and two Ta5+ atoms. In the ninth O2- site, O2- is bonded in a distorted water-like geometry to two equivalent Cs1+ and two equivalent Ta5+ atoms. In the tenth O2- site, O2- is bonded in a 2-coordinate geometry to two Cs1+ and two Ta5+ atoms.

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Materials Data on TaNi3 by Materials Project

Ni3Ta is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ta is bonded to twelve Ni atoms to form TaNi12 cuboctahedra that share corners with four equivalent TaNi12 cuboctahedra, corners with eight equivalent NiTa4Ni8 cuboctahedra, edges with eight equivalent TaNi12 cuboctahedra, edges with sixteen equivalent NiTa4Ni8 cuboctahedra, faces with four equivalent TaNi12 cuboctahedra, and faces with fourteen NiTa4Ni8 cuboctahedra. There are four shorter (2.57 Å) and eight longer (2.61 Å) Ta–Ni bond lengths. There are two inequivalent Ni sites. In the first Ni site, Ni is bonded to four equivalent Ta and eight equivalent Ni atoms to form distorted NiTa4Ni8 cuboctahedra that share corners with four equivalent NiTa4Ni8 cuboctahedra, corners with eight equivalent TaNi12 cuboctahedra, edges with twenty-four NiTa4Ni8 cuboctahedra, faces with six equivalent TaNi12 cuboctahedra, and faces with twelve NiTa4Ni8 cuboctahedra. All Ni–Ni bond lengths are 2.61 Å. In the second Ni site, Ni is bonded to four equivalent Ta and eight Ni atoms to form distorted NiTa4Ni8 cuboctahedra that share corners with twelve equivalent NiTa4Ni8 cuboctahedra, edges with eight equivalent TaNi12 cuboctahedra, edges with sixteen NiTa4Ni8 cuboctahedra, faces with four equivalent TaNi12 cuboctahedra, and faces with fourteen NiTa4Ni8 cuboctahedra. All Ni–Ni bond lengths are 2.57 Å.

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Materials Data on TaNO by Materials Project

TaON crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are two inequivalent Ta5+ sites. In the first Ta5+ site, Ta5+ is bonded to four N3- and two O2- atoms to form a mixture of distorted edge and corner-sharing TaN4O2 octahedra. The corner-sharing octahedra tilt angles range from 5–38°. There are a spread of Ta–N bond distances ranging from 1.93–2.22 Å. There are one shorter (1.93 Å) and one longer (2.36 Å) Ta–O bond lengths. In the second Ta5+ site, Ta5+ is bonded to three N3- and three O2- atoms to form a mixture of distorted edge and corner-sharing TaN3O3 octahedra. The corner-sharing octahedra tilt angles range from 5–25°. There are one shorter (1.97 Å) and two longer (2.21 Å) Ta–N bond lengths. There is one shorter (1.94 Å) and two longer (1.99 Å) Ta–O bond length. There are two inequivalent N3- sites. In the first N3- site, N3- is bonded in a 3-coordinate geometry to three Ta5+ atoms. In the second N3- site, N3- is bonded to four Ta5+ atoms to form a mixture of distorted edge and corner-sharing NTa4 trigonal pyramids. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a linear geometry to two Ta5+ atoms. In the second O2- site, O2- is bonded in a 3-coordinate geometry to three Ta5+ atoms.

36 MATERIALS SCIENCE↗
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Materials Data on K2Ta2(OF2)3 by Materials Project

K2Ta2O3F6 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 9-coordinate geometry to nine F1- atoms. There are a spread of K–F bond distances ranging from 2.92–3.10 Å. In the second K1+ site, K1+ is bonded in a 9-coordinate geometry to nine F1- atoms. There are a spread of K–F bond distances ranging from 2.75–2.99 Å. There are two inequivalent Ta5+ sites. In the first Ta5+ site, Ta5+ is bonded to three O2- and three F1- atoms to form corner-sharing TaO3F3 octahedra. The corner-sharing octahedra tilt angles range from 8–28°. There is two shorter (1.92 Å) and one longer (1.93 Å) Ta–O bond length. There are one shorter (2.00 Å) and two longer (2.01 Å) Ta–F bond lengths. In the second Ta5+ site, Ta5+ is bonded to three O2- and three F1- atoms to form corner-sharing TaO3F3 octahedra. The corner-sharing octahedra tilt angles range from 8–28°. All Ta–O bond lengths are 1.93 Å. There are two shorter (1.99 Å) and one longer (2.01 Å) Ta–F bond lengths. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a linear geometry to two Ta5+ atoms. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to two Ta5+ atoms. There are four inequivalent F1- sites. In the first F1- site, F1- is bonded in a 1-coordinate geometry to three K1+ and one Ta5+ atom. In the second F1- site, F1- is bonded in a distorted single-bond geometry to three K1+ and one Ta5+ atom. In the third F1- site, F1- is bonded in a 1-coordinate geometry to three K1+ and one Ta5+ atom. In the fourth F1- site, F1- is bonded in a distorted single-bond geometry to three K1+ and one Ta5+ atom.

36 MATERIALS SCIENCE↗
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Materials Data on TaTlO3 by Materials Project

TlTaO3 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are four inequivalent Ta5+ sites. In the first Ta5+ site, Ta5+ is bonded to six O2- atoms to form corner-sharing TaO6 octahedra. The corner-sharing octahedra tilt angles range from 37–38°. All Ta–O bond lengths are 2.01 Å. In the second Ta5+ site, Ta5+ is bonded to six O2- atoms to form corner-sharing TaO6 octahedra. The corner-sharing octahedra tilt angles range from 37–38°. There are four shorter (2.01 Å) and two longer (2.02 Å) Ta–O bond lengths. In the third Ta5+ site, Ta5+ is bonded to six O2- atoms to form corner-sharing TaO6 octahedra. The corner-sharing octahedra tilt angles range from 37–38°. There are two shorter (2.00 Å) and four longer (2.01 Å) Ta–O bond lengths. In the fourth Ta5+ site, Ta5+ is bonded to six O2- atoms to form corner-sharing TaO6 octahedra. The corner-sharing octahedra tilt angles range from 37–38°. All Ta–O bond lengths are 2.01 Å. There are three inequivalent Tl1+ sites. In the first Tl1+ site, Tl1+ is bonded in a hexagonal planar geometry to six O2- atoms. There are a spread of Tl–O bond distances ranging from 2.74–2.90 Å. In the second Tl1+ site, Tl1+ is bonded in a hexagonal planar geometry to six O2- atoms. There are four shorter (2.79 Å) and two longer (2.81 Å) Tl–O bond lengths. In the third Tl1+ site, Tl1+ is bonded in a hexagonal planar geometry to six O2- atoms. There are a spread of Tl–O bond distances ranging from 2.76–2.85 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to two Ta5+ and two equivalent Tl1+ atoms. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Ta5+ and two Tl1+ atoms. In the third O2- site, O2- is bonded in a 2-coordinate geometry to two Ta5+ and two Tl1+ atoms. In the fourth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Ta5+ and two Tl1+ atoms. In the fifth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Ta5+ and two Tl1+ atoms. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to two Ta5+ and two Tl1+ atoms.

36 MATERIALS SCIENCE↗
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Materials Data on CsTaSe3 by Materials Project

CsTaSe3 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are four inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded to twelve Se2- atoms to form CsSe12 cuboctahedra that share corners with six CsSe12 cuboctahedra, corners with six TaSe6 octahedra, faces with eight CsSe12 cuboctahedra, and faces with six TaSe6 octahedra. The corner-sharing octahedra tilt angles range from 13–21°. There are a spread of Cs–Se bond distances ranging from 3.85–3.92 Å. In the second Cs1+ site, Cs1+ is bonded to twelve Se2- atoms to form CsSe12 cuboctahedra that share corners with six CsSe12 cuboctahedra, corners with six TaSe6 octahedra, faces with eight CsSe12 cuboctahedra, and faces with six TaSe6 octahedra. The corner-sharing octahedra tilt angles range from 11–22°. There are a spread of Cs–Se bond distances ranging from 3.85–3.93 Å. In the third Cs1+ site, Cs1+ is bonded to twelve Se2- atoms to form CsSe12 cuboctahedra that share corners with six CsSe12 cuboctahedra, corners with six TaSe6 octahedra, faces with eight CsSe12 cuboctahedra, and faces with six TaSe6 octahedra. The corner-sharing octahedra tilt angles range from 11–21°. There are a spread of Cs–Se bond distances ranging from 3.84–3.94 Å. In the fourth Cs1+ site, Cs1+ is bonded to twelve Se2- atoms to form CsSe12 cuboctahedra that share corners with six CsSe12 cuboctahedra, corners with six TaSe6 octahedra, faces with eight CsSe12 cuboctahedra, and faces with six TaSe6 octahedra. The corner-sharing octahedra tilt angles range from 12–21°. There are a spread of Cs–Se bond distances ranging from 3.85–3.94 Å. There are four inequivalent Ta5+ sites. In the first Ta5+ site, Ta5+ is bonded to six Se2- atoms to form TaSe6 octahedra that share corners with six CsSe12 cuboctahedra, faces with six CsSe12 cuboctahedra, and faces with two equivalent TaSe6 octahedra. There are a spread of Ta–Se bond distances ranging from 2.47–2.79 Å. In the second Ta5+ site, Ta5+ is bonded to six Se2- atoms to form TaSe6 octahedra that share corners with six CsSe12 cuboctahedra, faces with six CsSe12 cuboctahedra, and faces with two equivalent TaSe6 octahedra. There are a spread of Ta–Se bond distances ranging from 2.47–2.77 Å. In the third Ta5+ site, Ta5+ is bonded to six Se2- atoms to form TaSe6 octahedra that share corners with six CsSe12 cuboctahedra, faces with six CsSe12 cuboctahedra, and faces with two equivalent TaSe6 octahedra. There are a spread of Ta–Se bond distances ranging from 2.47–2.79 Å. In the fourth Ta5+ site, Ta5+ is bonded to six Se2- atoms to form TaSe6 octahedra that share corners with six CsSe12 cuboctahedra, faces with six CsSe12 cuboctahedra, and faces with two equivalent TaSe6 octahedra. There are a spread of Ta–Se bond distances ranging from 2.47–2.79 Å. There are twelve inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 6-coordinate geometry to four Cs1+ and two Ta5+ atoms. In the second Se2- site, Se2- is bonded in a 6-coordinate geometry to four Cs1+ and two Ta5+ atoms. In the third Se2- site, Se2- is bonded in a 6-coordinate geometry to four Cs1+ and two Ta5+ atoms. In the fourth Se2- site, Se2- is bonded in a 6-coordinate geometry to four Cs1+ and two Ta5+ atoms. In the fifth Se2- site, Se2- is bonded in a 6-coordinate geometry to four Cs1+ and two Ta5+ atoms. In the sixth Se2- site, Se2- is bonded in a 6-coordinate geometry to four Cs1+ and two Ta5+ atoms. In the seventh Se2- site, Se2- is bonded in a 6-coordinate geometry to four Cs1+ and two Ta5+ atoms. In the eighth Se2- site, Se2- is bonded in a 6-coordinate geometry to four Cs1+ and two Ta5+ atoms. In the ninth Se2- site, Se2- is bonded in a 6-coordinate geometry to four Cs1+ and two Ta5+ atoms. In the tenth Se2- site, Se2- is bonded in a 6-coordinate geometry to four Cs1+ and two Ta5+ atoms. In the eleventh Se2- site, Se2- is bonded in a 6-coordinate geometry to four Cs1+ and two Ta5+ atoms. In the twelfth Se2- site, Se2- is bonded in a 6-coordinate geometry to four Cs1+ and two Ta5+ atoms.

36 MATERIALS SCIENCE↗
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Materials Data on La2ThTa(ClO2)3 by Materials Project

ThLa2Ta(O2Cl)3 crystallizes in the monoclinic Pm space group. The structure is three-dimensional. there are four inequivalent Th4+ sites. In the first Th4+ site, Th4+ is bonded in a 10-coordinate geometry to six O2- and four Cl1- atoms. There are a spread of Th–O bond distances ranging from 2.29–2.71 Å. There are a spread of Th–Cl bond distances ranging from 3.04–3.14 Å. In the second Th4+ site, Th4+ is bonded in a 10-coordinate geometry to six O2- and four Cl1- atoms. There are a spread of Th–O bond distances ranging from 2.30–2.69 Å. There are a spread of Th–Cl bond distances ranging from 3.04–3.10 Å. In the third Th4+ site, Th4+ is bonded in a 10-coordinate geometry to six O2- and four Cl1- atoms. There are a spread of Th–O bond distances ranging from 2.30–2.68 Å. There are a spread of Th–Cl bond distances ranging from 3.04–3.12 Å. In the fourth Th4+ site, Th4+ is bonded in a 10-coordinate geometry to six O2- and four Cl1- atoms. There are a spread of Th–O bond distances ranging from 2.30–2.63 Å. There are a spread of Th–Cl bond distances ranging from 3.04–3.13 Å. There are eight inequivalent La3+ sites. In the first La3+ site, La3+ is bonded in a 10-coordinate geometry to six O2- and four Cl1- atoms. There are a spread of La–O bond distances ranging from 2.42–2.74 Å. There are a spread of La–Cl bond distances ranging from 3.05–3.12 Å. In the second La3+ site, La3+ is bonded in a 10-coordinate geometry to six O2- and four Cl1- atoms. There are a spread of La–O bond distances ranging from 2.44–2.74 Å. There are a spread of La–Cl bond distances ranging from 3.04–3.11 Å. In the third La3+ site, La3+ is bonded in a 10-coordinate geometry to six O2- and four Cl1- atoms. There are a spread of La–O bond distances ranging from 2.45–2.78 Å. There are two shorter (3.06 Å) and two longer (3.12 Å) La–Cl bond lengths. In the fourth La3+ site, La3+ is bonded in a 10-coordinate geometry to six O2- and four Cl1- atoms. There are a spread of La–O bond distances ranging from 2.41–2.72 Å. There are a spread of La–Cl bond distances ranging from 3.02–3.12 Å. In the fifth La3+ site, La3+ is bonded in a 10-coordinate geometry to six O2- and four Cl1- atoms. There are a spread of La–O bond distances ranging from 2.45–2.67 Å. There are a spread of La–Cl bond distances ranging from 3.02–3.09 Å. In the sixth La3+ site, La3+ is bonded in a 10-coordinate geometry to six O2- and four Cl1- atoms. There are a spread of La–O bond distances ranging from 2.42–2.74 Å. There are a spread of La–Cl bond distances ranging from 3.02–3.12 Å. In the seventh La3+ site, La3+ is bonded in a 10-coordinate geometry to six O2- and four Cl1- atoms. There are a spread of La–O bond distances ranging from 2.43–2.69 Å. There are a spread of La–Cl bond distances ranging from 3.00–3.10 Å. In the eighth La3+ site, La3+ is bonded in a 10-coordinate geometry to six O2- and four Cl1- atoms. There are a spread of La–O bond distances ranging from 2.44–2.71 Å. There are a spread of La–Cl bond distances ranging from 3.04–3.09 Å. There are four inequivalent Ta5+ sites. In the first Ta5+ site, Ta5+ is bonded in a distorted pentagonal pyramidal geometry to six O2- atoms. There are two shorter (1.99 Å) and four longer (2.02 Å) Ta–O bond lengths. In the second Ta5+ site, Ta5+ is bonded in a distorted pentagonal pyramidal geometry to six O2- atoms. There are a spread of Ta–O bond distances ranging from 1.98–2.03 Å. In the third Ta5+ site, Ta5+ is bonded in a distorted pentagonal pyramidal geometry to six O2- atoms. There are a spread of Ta–O bond distances ranging from 1.98–2.03 Å. In the fourth Ta5+ site, Ta5+ is bonded in a distorted pentagonal pyramidal geometry to six O2- atoms. There are two shorter (2.00 Å) and four longer (2.02 Å) Ta–O bond lengths. There are eighteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two Th4+, one La3+, one Ta5+, and one Cl1- atom. The O–Cl bond length is 3.07 Å. In the second O2- site, O2- is bonded in a 4-coordinate geometry to one Th4+, two La3+, and one Ta5+ atom. In the third O2- site, O2- is bonded in a 4-coordinate geometry to one Th4+, two La3+, and one Ta5+ atom. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to one Th4+, two La3+, and one Ta5+ atom. In the fifth O2- site, O2- is bonded to three La3+ and one Ta5+ atom to form distorted edge-sharing OLa3Ta tetrahedra. In the sixth O2- site, O2- is bonded in a 4-coordinate geometry to one Th4+, two La3+, and one Ta5+ atom. In the seventh O2- site, O2- is bonded to three La3+ and one Ta5+ atom to form distorted edge-sharing OLa3Ta tetrahedra. In the eighth O2- site, O2- is bonded in a 4-coordinate geometry to one Th4+, two La3+, and one Ta5+ atom. In the ninth O2- site, O2- is bonded in a 4-coordinate geometry to two Th4+, one La3+, one Ta5+, and one Cl1- atom. The O–Cl bond length is 3.02 Å. In the tenth O2- site, O2- is bonded in a 4-coordinate geometry to one Th4+, two La3+, and one Ta5+ atom. In the eleventh O2- site, O2- is bonded in a 4-coordinate geometry to one Th4+, two La3+, and one Ta5+ atom. In the twelfth O2- site, O2- is bonded in a 4-coordinate geometry to one Th4+, two La3+, and one Ta5+ atom. In the thirteenth O2- site, O2- is bonded in a 4-coordinate geometry to one Th4+, two La3+, one Ta5+, and one Cl1- atom. The O–Cl bond length is 3.10 Å. In the fourteenth O2- site, O2- is bonded in a 4-coordinate geometry to one Th4+, two La3+, one Ta5+, and one Cl1- atom. The O–Cl bond length is 3.13 Å. In the fifteenth O2- site, O2- is bonded in a 4-coordinate geometry to two Th4+, one La3+, and one Ta5+ atom. In the sixteenth O2- site, O2- is bonded in a 4-coordinate geometry to one Th4+, two La3+, and one Ta5+ atom. In the seventeenth O2- site, O2- is bonded in a 4-coordinate geometry to one Th4+, two La3+, and one Ta5+ atom. In the eighteenth O2- site, O2- is bonded in a 4-coordinate geometry to three La3+ and one Ta5+ atom. There are twelve inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a 4-coordinate geometry to three Th4+, one La3+, and four O2- atoms. In the second Cl1- site, Cl1- is bonded in a 4-coordinate geometry to two Th4+ and two La3+ atoms. In the third Cl1- site, Cl1- is bonded in a 4-coordinate geometry to four La3+ atoms. In the fourth Cl1- site, Cl1- is bonded in a 4-coordinate geometry to two Th4+ and two La3+ atoms. In the fifth Cl1- site, Cl1- is bonded in a 4-coordinate geometry to two Th4+ and two La3+ atoms. In the sixth Cl1- site, Cl1- is bonded in a 4-coordinate geometry to three Th4+, one La3+, and four O2- atoms. In the seventh Cl1- site, Cl1- is bonded in a 4-coordinate geometry to one Th4+ and three La3+ atoms. In the eighth Cl1- site, Cl1- is bonded in a 4-coordinate geometry to four La3+ atoms. In the ninth Cl1- site, Cl1- is bonded in a 4-coordinate geometry to two Th4+ and two La3+ atoms. In the tenth Cl1- site, Cl1- is bonded in a 4-coordinate geometry to four La3+ atoms. In the eleventh Cl1- site, Cl1- is bonded in a 4-coordinate geometry to one Th4+ and three La3+ atoms. In the twelfth Cl1- site, Cl1- is bonded in a 4-coordinate geometry to four La3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SrTaNO2 by Materials Project

SrTaO2N is Orthorhombic Perovskite-derived structured and crystallizes in the monoclinic Pm space group. The structure is three-dimensional. there are four inequivalent Sr2+ sites. In the first Sr2+ site, Sr2+ is bonded to four N3- and eight O2- atoms to form distorted SrN4O8 cuboctahedra that share corners with four equivalent SrN4O8 cuboctahedra and faces with eight TaN2O4 octahedra. There are a spread of Sr–N bond distances ranging from 2.73–3.07 Å. There are a spread of Sr–O bond distances ranging from 2.63–3.11 Å. In the second Sr2+ site, Sr2+ is bonded in a 12-coordinate geometry to four N3- and six O2- atoms. There are a spread of Sr–N bond distances ranging from 2.76–2.98 Å. There are a spread of Sr–O bond distances ranging from 2.60–2.91 Å. In the third Sr2+ site, Sr2+ is bonded in a 12-coordinate geometry to four N3- and eight O2- atoms. There are a spread of Sr–N bond distances ranging from 2.74–2.93 Å. There are a spread of Sr–O bond distances ranging from 2.54–3.21 Å. In the fourth Sr2+ site, Sr2+ is bonded in a 12-coordinate geometry to four N3- and eight O2- atoms. There are a spread of Sr–N bond distances ranging from 2.67–3.07 Å. There are a spread of Sr–O bond distances ranging from 2.62–3.19 Å. There are two inequivalent Ta5+ sites. In the first Ta5+ site, Ta5+ is bonded to two N3- and four O2- atoms to form TaN2O4 octahedra that share corners with six TaN2O4 octahedra and faces with two equivalent SrN4O8 cuboctahedra. The corner-sharing octahedra tilt angles range from 9–20°. There is one shorter (1.97 Å) and one longer (1.99 Å) Ta–N bond length. There are a spread of Ta–O bond distances ranging from 2.01–2.15 Å. In the second Ta5+ site, Ta5+ is bonded to two N3- and four O2- atoms to form TaN2O4 octahedra that share corners with six TaN2O4 octahedra and faces with two equivalent SrN4O8 cuboctahedra. The corner-sharing octahedra tilt angles range from 10–18°. There are one shorter (1.99 Å) and one longer (2.01 Å) Ta–N bond lengths. There are a spread of Ta–O bond distances ranging from 2.01–2.13 Å. There are three inequivalent N3- sites. In the first N3- site, N3- is bonded in a 2-coordinate geometry to four Sr2+ and two equivalent Ta5+ atoms. In the second N3- site, N3- is bonded in a 2-coordinate geometry to four Sr2+ and two Ta5+ atoms. In the third N3- site, N3- is bonded in a 2-coordinate geometry to four Sr2+ and two equivalent Ta5+ atoms. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to four Sr2+ and two equivalent Ta5+ atoms. In the second O2- site, O2- is bonded in a 2-coordinate geometry to four Sr2+ and two Ta5+ atoms. In the third O2- site, O2- is bonded in a 2-coordinate geometry to four Sr2+ and two Ta5+ atoms. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to four Sr2+ and two equivalent Ta5+ atoms. In the fifth O2- site, O2- is bonded in a 5-coordinate geometry to three Sr2+ and two Ta5+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SrTaNO2 by Materials Project

SrTaO2N crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional. there are two inequivalent Sr2+ sites. In the first Sr2+ site, Sr2+ is bonded in a 12-coordinate geometry to four N3- and eight O2- atoms. There are a spread of Sr–N bond distances ranging from 2.77–3.12 Å. There are a spread of Sr–O bond distances ranging from 2.70–3.23 Å. In the second Sr2+ site, Sr2+ is bonded to four N3- and eight O2- atoms to form distorted SrN4O8 cuboctahedra that share corners with four equivalent SrN4O8 cuboctahedra, faces with two equivalent SrN4O8 cuboctahedra, and faces with eight TaN2O4 octahedra. There are a spread of Sr–N bond distances ranging from 2.69–2.96 Å. There are a spread of Sr–O bond distances ranging from 2.60–3.11 Å. There are two inequivalent Ta5+ sites. In the first Ta5+ site, Ta5+ is bonded to two N3- and four O2- atoms to form TaN2O4 octahedra that share corners with six TaN2O4 octahedra and faces with four equivalent SrN4O8 cuboctahedra. The corner-sharing octahedra tilt angles range from 6–18°. There is one shorter (1.96 Å) and one longer (2.01 Å) Ta–N bond length. There are a spread of Ta–O bond distances ranging from 2.02–2.17 Å. In the second Ta5+ site, Ta5+ is bonded to two N3- and four O2- atoms to form TaN2O4 octahedra that share corners with six TaN2O4 octahedra and faces with four equivalent SrN4O8 cuboctahedra. The corner-sharing octahedra tilt angles range from 6–18°. There is one shorter (1.96 Å) and one longer (2.01 Å) Ta–N bond length. There are a spread of Ta–O bond distances ranging from 2.02–2.17 Å. There are two inequivalent N3- sites. In the first N3- site, N3- is bonded in a distorted linear geometry to four Sr2+ and two Ta5+ atoms. In the second N3- site, N3- is bonded in a 2-coordinate geometry to four Sr2+ and two Ta5+ atoms. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to four Sr2+ and two Ta5+ atoms. In the second O2- site, O2- is bonded in a 2-coordinate geometry to four Sr2+ and two equivalent Ta5+ atoms. In the third O2- site, O2- is bonded in a 2-coordinate geometry to four Sr2+ and two equivalent Ta5+ atoms. In the fourth O2- site, O2- is bonded in a 5-coordinate geometry to four Sr2+ and two Ta5+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SrTaNO2 by Materials Project

SrTaO2N is Orthorhombic Perovskite-derived structured and crystallizes in the monoclinic Pc space group. The structure is three-dimensional. there are two inequivalent Sr2+ sites. In the first Sr2+ site, Sr2+ is bonded in a 12-coordinate geometry to four N3- and eight O2- atoms. There are a spread of Sr–N bond distances ranging from 2.72–3.10 Å. There are a spread of Sr–O bond distances ranging from 2.56–3.19 Å. In the second Sr2+ site, Sr2+ is bonded in a 12-coordinate geometry to four N3- and eight O2- atoms. There are a spread of Sr–N bond distances ranging from 2.72–3.02 Å. There are a spread of Sr–O bond distances ranging from 2.56–3.28 Å. There are two inequivalent Ta5+ sites. In the first Ta5+ site, Ta5+ is bonded to two N3- and four O2- atoms to form corner-sharing TaN2O4 octahedra. The corner-sharing octahedra tilt angles range from 10–20°. There is one shorter (1.94 Å) and one longer (2.02 Å) Ta–N bond length. There are a spread of Ta–O bond distances ranging from 2.02–2.20 Å. In the second Ta5+ site, Ta5+ is bonded to two N3- and four O2- atoms to form corner-sharing TaN2O4 octahedra. The corner-sharing octahedra tilt angles range from 10–20°. There is one shorter (1.94 Å) and one longer (2.03 Å) Ta–N bond length. There are a spread of Ta–O bond distances ranging from 2.01–2.17 Å. There are two inequivalent N3- sites. In the first N3- site, N3- is bonded in a 2-coordinate geometry to four Sr2+ and two Ta5+ atoms. In the second N3- site, N3- is bonded in a 2-coordinate geometry to four Sr2+ and two Ta5+ atoms. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to four Sr2+ and two Ta5+ atoms. In the second O2- site, O2- is bonded in a 5-coordinate geometry to four Sr2+ and two Ta5+ atoms. In the third O2- site, O2- is bonded in a 2-coordinate geometry to four Sr2+ and two Ta5+ atoms. In the fourth O2- site, O2- is bonded in a 5-coordinate geometry to four Sr2+ and two Ta5+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ta3(OF)5 by Materials Project

Ta3(OF)5 crystallizes in the orthorhombic Immm space group. The structure is two-dimensional and consists of two Ta3(OF)5 sheets oriented in the (0, 0, 1) direction. there are two inequivalent Ta5+ sites. In the first Ta5+ site, Ta5+ is bonded to four O2- and two equivalent F1- atoms to form corner-sharing TaO4F2 octahedra. The corner-sharing octahedral tilt angles are 0°. There is two shorter (1.94 Å) and two longer (2.01 Å) Ta–O bond length. Both Ta–F bond lengths are 1.97 Å. In the second Ta5+ site, Ta5+ is bonded to three O2- and three F1- atoms to form corner-sharing TaO3F3 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. There is one shorter (1.94 Å) and two longer (1.97 Å) Ta–O bond length. There is one shorter (1.91 Å) and two longer (2.01 Å) Ta–F bond length. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a linear geometry to two equivalent Ta5+ atoms. In the second O2- site, O2- is bonded in a linear geometry to two equivalent Ta5+ atoms. In the third O2- site, O2- is bonded in a linear geometry to two Ta5+ atoms. There are three inequivalent F1- sites. In the first F1- site, F1- is bonded in a linear geometry to two equivalent Ta5+ atoms. In the second F1- site, F1- is bonded in a single-bond geometry to one Ta5+ atom. In the third F1- site, F1- is bonded in a linear geometry to two equivalent Ta5+ atoms.

36 MATERIALS SCIENCE↗