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DOE OSTI2020

Materials Data on V3Br by Materials Project

V3Br crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent V sites. In the first V site, V is bonded to eight V and four equivalent Br atoms to form distorted VV8Br4 cuboctahedra that share corners with twelve equivalent VV8Br4 cuboctahedra, edges with eight equivalent VV8Br4 cuboctahedra, edges with eight equivalent BrV12 cuboctahedra, faces with four equivalent BrV12 cuboctahedra, and faces with ten equivalent VV8Br4 cuboctahedra. There are four shorter (2.51 Å) and four longer (2.89 Å) V–V bond lengths. All V–Br bond lengths are 2.89 Å. In the second V site, V is bonded in a square co-planar geometry to eight equivalent V and four equivalent Br atoms. All V–Br bond lengths are 2.51 Å. Br is bonded to twelve V atoms to form distorted BrV12 cuboctahedra that share corners with four equivalent BrV12 cuboctahedra, edges with eight equivalent BrV12 cuboctahedra, edges with sixteen equivalent VV8Br4 cuboctahedra, faces with four equivalent BrV12 cuboctahedra, and faces with eight equivalent VV8Br4 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Bi10Te2Br4O17 by Materials Project

Bi10Te2O17Br4 crystallizes in the orthorhombic Fmm2 space group. The structure is two-dimensional and consists of two Bi10Te2O17Br4 sheets oriented in the (0, 0, 1) direction. there are seven inequivalent Bi3+ sites. In the first Bi3+ site, Bi3+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of Bi–O bond distances ranging from 2.42–2.83 Å. In the second Bi3+ site, Bi3+ is bonded in a 4-coordinate geometry to four O2- atoms. All Bi–O bond lengths are 2.25 Å. In the third Bi3+ site, Bi3+ is bonded in a 4-coordinate geometry to four O2- and four equivalent Br1- atoms. All Bi–O bond lengths are 2.27 Å. All Bi–Br bond lengths are 3.40 Å. In the fourth Bi3+ site, Bi3+ is bonded in a 4-coordinate geometry to four O2- and four equivalent Br1- atoms. All Bi–O bond lengths are 2.29 Å. All Bi–Br bond lengths are 3.50 Å. In the fifth Bi3+ site, Bi3+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are four shorter (2.44 Å) and four longer (2.53 Å) Bi–O bond lengths. In the sixth Bi3+ site, Bi3+ is bonded in a 4-coordinate geometry to four O2- and four equivalent Br1- atoms. All Bi–O bond lengths are 2.28 Å. All Bi–Br bond lengths are 3.40 Å. In the seventh Bi3+ site, Bi3+ is bonded in a 4-coordinate geometry to four O2- and four equivalent Br1- atoms. All Bi–O bond lengths are 2.29 Å. All Bi–Br bond lengths are 3.39 Å. There are two inequivalent Te4+ sites. In the first Te4+ site, Te4+ is bonded in a 4-coordinate geometry to four O2- and four equivalent Br1- atoms. There are two shorter (2.04 Å) and two longer (2.05 Å) Te–O bond lengths. All Te–Br bond lengths are 3.51 Å. In the second Te4+ site, Te4+ is bonded in a distorted square pyramidal geometry to five O2- atoms. There are a spread of Te–O bond distances ranging from 1.88–2.19 Å. There are nine inequivalent O2- sites. In the first O2- site, O2- is bonded to four Bi3+ atoms to form a mixture of edge and corner-sharing OBi4 tetrahedra. In the second O2- site, O2- is bonded to four Bi3+ atoms to form a mixture of edge and corner-sharing OBi4 tetrahedra. In the third O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Bi3+ and two Te4+ atoms. In the fourth O2- site, O2- is bonded to four Bi3+ atoms to form a mixture of edge and corner-sharing OBi4 tetrahedra. In the fifth O2- site, O2- is bonded to four Bi3+ atoms to form a mixture of edge and corner-sharing OBi4 tetrahedra. In the sixth O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Bi3+ and two Te4+ atoms. In the seventh O2- site, O2- is bonded in a single-bond geometry to four equivalent Bi3+ and one Te4+ atom. In the eighth O2- site, O2- is bonded to four Bi3+ atoms to form a mixture of edge and corner-sharing OBi4 tetrahedra. In the ninth O2- site, O2- is bonded to four Bi3+ atoms to form a mixture of edge and corner-sharing OBi4 tetrahedra. There are two inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 8-coordinate geometry to four Bi3+ atoms. In the second Br1- site, Br1- is bonded in a 6-coordinate geometry to four Bi3+ and two equivalent Te4+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CuHgSBr by Materials Project

CuHgSBr crystallizes in the orthorhombic Pbam space group. The structure is three-dimensional. there are two inequivalent Cu1+ sites. In the first Cu1+ site, Cu1+ is bonded to two equivalent S2- and two Br1- atoms to form CuS2Br2 trigonal pyramids that share corners with two equivalent HgS2Br4 octahedra, corners with two equivalent CuS2Br2 trigonal pyramids, edges with two equivalent HgS2Br4 octahedra, and an edgeedge with one CuS2Br2 trigonal pyramid. The corner-sharing octahedral tilt angles are 57°. Both Cu–S bond lengths are 2.25 Å. There are one shorter (2.44 Å) and one longer (3.15 Å) Cu–Br bond lengths. In the second Cu1+ site, Cu1+ is bonded to two equivalent S2- and two Br1- atoms to form CuS2Br2 trigonal pyramids that share corners with two equivalent HgS2Br4 octahedra, corners with two equivalent CuS2Br2 trigonal pyramids, edges with two equivalent HgS2Br4 octahedra, and an edgeedge with one CuS2Br2 trigonal pyramid. The corner-sharing octahedral tilt angles are 57°. Both Cu–S bond lengths are 2.25 Å. There are one shorter (2.45 Å) and one longer (3.07 Å) Cu–Br bond lengths. There are three inequivalent Hg2+ sites. In the first Hg2+ site, Hg2+ is bonded in a 4-coordinate geometry to two S2- and four Br1- atoms. Both Hg–S bond lengths are 2.44 Å. There are two shorter (3.18 Å) and two longer (3.62 Å) Hg–Br bond lengths. In the second Hg2+ site, Hg2+ is bonded to two equivalent S2- and four equivalent Br1- atoms to form distorted HgS2Br4 octahedra that share corners with four equivalent HgS2Br4 octahedra, corners with four equivalent CuS2Br2 trigonal pyramids, edges with four HgS2Br4 octahedra, and edges with four equivalent CuS2Br2 trigonal pyramids. The corner-sharing octahedral tilt angles are 13°. Both Hg–S bond lengths are 2.44 Å. All Hg–Br bond lengths are 3.28 Å. In the third Hg2+ site, Hg2+ is bonded to two equivalent S2- and four equivalent Br1- atoms to form distorted HgS2Br4 octahedra that share corners with four equivalent HgS2Br4 octahedra, corners with four equivalent CuS2Br2 trigonal pyramids, edges with four HgS2Br4 octahedra, and edges with four equivalent CuS2Br2 trigonal pyramids. The corner-sharing octahedral tilt angles are 13°. Both Hg–S bond lengths are 2.45 Å. All Hg–Br bond lengths are 3.28 Å. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded to two equivalent Cu1+ and two Hg2+ atoms to form corner-sharing SCu2Hg2 trigonal pyramids. In the second S2- site, S2- is bonded to two equivalent Cu1+ and two Hg2+ atoms to form corner-sharing SCu2Hg2 tetrahedra. There are two inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 2-coordinate geometry to two Cu1+ and two equivalent Hg2+ atoms. In the second Br1- site, Br1- is bonded in a 8-coordinate geometry to two Cu1+ and six Hg2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Bi12Br5O16 by Materials Project

Bi12O16Br5 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are six inequivalent Bi+3.08+ sites. In the first Bi+3.08+ site, Bi+3.08+ is bonded in a 4-coordinate geometry to four O2- and four Br1- atoms. There are a spread of Bi–O bond distances ranging from 2.26–2.30 Å. There are two shorter (3.45 Å) and two longer (3.53 Å) Bi–Br bond lengths. In the second Bi+3.08+ site, Bi+3.08+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Bi–O bond distances ranging from 2.27–2.77 Å. In the third Bi+3.08+ site, Bi+3.08+ is bonded in a 4-coordinate geometry to four O2- and four Br1- atoms. There are a spread of Bi–O bond distances ranging from 2.25–2.31 Å. There are two shorter (3.40 Å) and two longer (3.55 Å) Bi–Br bond lengths. In the fourth Bi+3.08+ site, Bi+3.08+ is bonded in a 6-coordinate geometry to four O2- and two equivalent Br1- atoms. There are a spread of Bi–O bond distances ranging from 2.15–2.36 Å. Both Bi–Br bond lengths are 3.30 Å. In the fifth Bi+3.08+ site, Bi+3.08+ is bonded in a 4-coordinate geometry to four O2- and two equivalent Br1- atoms. There are two shorter (2.28 Å) and two longer (2.30 Å) Bi–O bond lengths. Both Bi–Br bond lengths are 3.31 Å. In the sixth Bi+3.08+ site, Bi+3.08+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are a spread of Bi–O bond distances ranging from 2.38–2.63 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded to four Bi+3.08+ atoms to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the second O2- site, O2- is bonded to four Bi+3.08+ atoms to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the third O2- site, O2- is bonded to four Bi+3.08+ atoms to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the fourth O2- site, O2- is bonded to four Bi+3.08+ atoms to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the fifth O2- site, O2- is bonded to four Bi+3.08+ atoms to form a mixture of distorted corner and edge-sharing OBi4 tetrahedra. In the sixth O2- site, O2- is bonded to four Bi+3.08+ atoms to form a mixture of distorted corner and edge-sharing OBi4 tetrahedra. In the seventh O2- site, O2- is bonded in a distorted trigonal planar geometry to three Bi+3.08+ and one Br1- atom. The O–Br bond length is 3.23 Å. In the eighth O2- site, O2- is bonded to four Bi+3.08+ atoms to form a mixture of distorted corner and edge-sharing OBi4 tetrahedra. There are three inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 5-coordinate geometry to four Bi+3.08+ and one O2- atom. In the second Br1- site, Br1- is bonded in a distorted body-centered cubic geometry to eight Bi+3.08+ atoms. In the third Br1- site, Br1- is bonded in a 4-coordinate geometry to four Bi+3.08+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Mn3Br by Materials Project

Mn3Br is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Mn sites. In the first Mn site, Mn is bonded to eight Mn and four equivalent Br atoms to form distorted MnMn8Br4 cuboctahedra that share corners with twelve equivalent MnMn8Br4 cuboctahedra, edges with eight equivalent MnMn8Br4 cuboctahedra, edges with eight equivalent BrMn12 cuboctahedra, faces with four equivalent BrMn12 cuboctahedra, and faces with ten equivalent MnMn8Br4 cuboctahedra. There are four shorter (2.79 Å) and four longer (2.96 Å) Mn–Mn bond lengths. All Mn–Br bond lengths are 2.96 Å. In the second Mn site, Mn is bonded in a square co-planar geometry to eight equivalent Mn and four equivalent Br atoms. All Mn–Br bond lengths are 2.79 Å. Br is bonded to twelve Mn atoms to form BrMn12 cuboctahedra that share corners with four equivalent BrMn12 cuboctahedra, edges with eight equivalent BrMn12 cuboctahedra, edges with sixteen equivalent MnMn8Br4 cuboctahedra, faces with four equivalent BrMn12 cuboctahedra, and faces with eight equivalent MnMn8Br4 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cu4Br3Cl by Materials Project

Cu4Br3Cl is Caswellsilverite-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are five inequivalent Cu1+ sites. In the first Cu1+ site, Cu1+ is bonded to four Br1- and two equivalent Cl1- atoms to form CuBr4Cl2 octahedra that share corners with six CuBr4Cl2 octahedra and edges with twelve CuBr5Cl octahedra. The corner-sharing octahedral tilt angles are 0°. All Cu–Br bond lengths are 2.66 Å. Both Cu–Cl bond lengths are 2.66 Å. In the second Cu1+ site, Cu1+ is bonded to five Br1- and one Cl1- atom to form CuBr5Cl octahedra that share corners with six equivalent CuBr5Cl octahedra and edges with twelve CuBr4Cl2 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. There are four shorter (2.66 Å) and one longer (2.70 Å) Cu–Br bond lengths. The Cu–Cl bond length is 2.62 Å. In the third Cu1+ site, Cu1+ is bonded to four Br1- and two equivalent Cl1- atoms to form a mixture of corner and edge-sharing CuBr4Cl2 octahedra. The corner-sharing octahedral tilt angles are 0°. All Cu–Br bond lengths are 2.66 Å. Both Cu–Cl bond lengths are 2.66 Å. In the fourth Cu1+ site, Cu1+ is bonded to four Br1- and two equivalent Cl1- atoms to form CuBr4Cl2 octahedra that share corners with six CuBr4Cl2 octahedra and edges with twelve CuBr5Cl octahedra. The corner-sharing octahedral tilt angles are 0°. All Cu–Br bond lengths are 2.66 Å. Both Cu–Cl bond lengths are 2.66 Å. In the fifth Cu1+ site, Cu1+ is bonded to four Br1- and two equivalent Cl1- atoms to form CuBr4Cl2 octahedra that share corners with six CuBr4Cl2 octahedra and edges with twelve CuBr5Cl octahedra. The corner-sharing octahedral tilt angles are 0°. All Cu–Br bond lengths are 2.66 Å. Both Cu–Cl bond lengths are 2.66 Å. There are two inequivalent Br1- sites. In the first Br1- site, Br1- is bonded to six Cu1+ atoms to form BrCu6 octahedra that share corners with six equivalent BrCu6 octahedra, edges with four ClCu6 octahedra, and edges with eight BrCu6 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. In the second Br1- site, Br1- is bonded to six Cu1+ atoms to form BrCu6 octahedra that share corners with two equivalent ClCu6 octahedra, corners with four equivalent BrCu6 octahedra, edges with four equivalent ClCu6 octahedra, and edges with eight equivalent BrCu6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded to six Cu1+ atoms to form ClCu6 octahedra that share corners with two equivalent BrCu6 octahedra, corners with four equivalent ClCu6 octahedra, and edges with twelve BrCu6 octahedra. The corner-sharing octahedral tilt angles are 0°. In the second Cl1- site, Cl1- is bonded to six Cu1+ atoms to form ClCu6 octahedra that share corners with two equivalent BrCu6 octahedra, corners with four equivalent ClCu6 octahedra, and edges with twelve BrCu6 octahedra. The corner-sharing octahedral tilt angles are 0°. Both Cl–Cu bond lengths are 2.62 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CdBrO by Materials Project

CdOBr crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Cd is bonded in a 6-coordinate geometry to three equivalent O and three equivalent Br atoms. There are a spread of Cd–O bond distances ranging from 2.21–2.30 Å. There are two shorter (2.92 Å) and one longer (3.02 Å) Cd–Br bond lengths. O is bonded to three equivalent Cd and one Br atom to form a mixture of distorted corner and edge-sharing OCd3Br tetrahedra. The O–Br bond length is 2.51 Å. Br is bonded in a distorted rectangular see-saw-like geometry to three equivalent Cd and one O atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cs3Nb6SBr17 by Materials Project

Cs3Nb6SBr17 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are two inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 12-coordinate geometry to twelve Br1- atoms. There are a spread of Cs–Br bond distances ranging from 3.56–4.34 Å. In the second Cs1+ site, Cs1+ is bonded in a distorted q6 geometry to ten Br1- atoms. There are a spread of Cs–Br bond distances ranging from 3.68–3.98 Å. There are three inequivalent Nb+2.67+ sites. In the first Nb+2.67+ site, Nb+2.67+ is bonded to one S2- and five Br1- atoms to form a mixture of face, edge, and corner-sharing NbSBr5 octahedra. The corner-sharing octahedra tilt angles range from 41–49°. The Nb–S bond length is 2.38 Å. There are a spread of Nb–Br bond distances ranging from 2.62–2.92 Å. In the second Nb+2.67+ site, Nb+2.67+ is bonded to one S2- and five Br1- atoms to form a mixture of face, edge, and corner-sharing NbSBr5 octahedra. The corner-sharing octahedra tilt angles range from 42–44°. The Nb–S bond length is 2.39 Å. There are a spread of Nb–Br bond distances ranging from 2.61–2.78 Å. In the third Nb+2.67+ site, Nb+2.67+ is bonded to one S2- and five Br1- atoms to form a mixture of face, edge, and corner-sharing NbSBr5 octahedra. The corner-sharing octahedra tilt angles range from 42–43°. The Nb–S bond length is 2.40 Å. There are a spread of Nb–Br bond distances ranging from 2.62–2.73 Å. S2- is bonded in a distorted pentagonal pyramidal geometry to six Nb+2.67+ atoms. There are nine inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 3-coordinate geometry to two equivalent Cs1+ and one Nb+2.67+ atom. In the second Br1- site, Br1- is bonded in a 4-coordinate geometry to two equivalent Cs1+ and two Nb+2.67+ atoms. In the third Br1- site, Br1- is bonded in a 2-coordinate geometry to two equivalent Cs1+ and two Nb+2.67+ atoms. In the fourth Br1- site, Br1- is bonded in a 3-coordinate geometry to one Cs1+ and two Nb+2.67+ atoms. In the fifth Br1- site, Br1- is bonded in a 2-coordinate geometry to one Cs1+ and two Nb+2.67+ atoms. In the sixth Br1- site, Br1- is bonded in a 2-coordinate geometry to three Cs1+ and two equivalent Nb+2.67+ atoms. In the seventh Br1- site, Br1- is bonded in a 1-coordinate geometry to four Cs1+ and one Nb+2.67+ atom. In the eighth Br1- site, Br1- is bonded in a distorted bent 120 degrees geometry to two equivalent Cs1+ and two equivalent Nb+2.67+ atoms. In the ninth Br1- site, Br1- is bonded in a 3-coordinate geometry to one Cs1+ and two Nb+2.67+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ta2Se8Br by Materials Project

Ta2Se8Br crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are four inequivalent Ta+4.50+ sites. In the first Ta+4.50+ site, Ta+4.50+ is bonded to eight Se1- atoms to form face-sharing TaSe8 hexagonal bipyramids. There are a spread of Ta–Se bond distances ranging from 2.57–2.80 Å. In the second Ta+4.50+ site, Ta+4.50+ is bonded to seven Se1- and one Br1- atom to form distorted face-sharing TaSe7Br hexagonal bipyramids. There are a spread of Ta–Se bond distances ranging from 2.61–2.74 Å. The Ta–Br bond length is 2.66 Å. In the third Ta+4.50+ site, Ta+4.50+ is bonded to eight Se1- atoms to form face-sharing TaSe8 hexagonal bipyramids. There are a spread of Ta–Se bond distances ranging from 2.59–2.77 Å. In the fourth Ta+4.50+ site, Ta+4.50+ is bonded to eight Se1- atoms to form face-sharing TaSe8 hexagonal bipyramids. There are a spread of Ta–Se bond distances ranging from 2.60–2.74 Å. There are sixteen inequivalent Se1- sites. In the first Se1- site, Se1- is bonded in a 2-coordinate geometry to two Ta+4.50+ atoms. In the second Se1- site, Se1- is bonded in a 2-coordinate geometry to two Ta+4.50+ atoms. In the third Se1- site, Se1- is bonded in a 2-coordinate geometry to two Ta+4.50+ atoms. In the fourth Se1- site, Se1- is bonded in a 1-coordinate geometry to one Ta+4.50+ atom. In the fifth Se1- site, Se1- is bonded in a 2-coordinate geometry to two Ta+4.50+ and one Se1- atom. The Se–Se bond length is 2.39 Å. In the sixth Se1- site, Se1- is bonded in a 2-coordinate geometry to two Ta+4.50+ and one Se1- atom. The Se–Se bond length is 2.40 Å. In the seventh Se1- site, Se1- is bonded in a 2-coordinate geometry to two Ta+4.50+ atoms. In the eighth Se1- site, Se1- is bonded in a 1-coordinate geometry to two Ta+4.50+, one Se1-, and one Br1- atom. The Se–Br bond length is 3.16 Å. In the ninth Se1- site, Se1- is bonded in a 2-coordinate geometry to two Ta+4.50+ atoms. In the tenth Se1- site, Se1- is bonded in a 3-coordinate geometry to two Ta+4.50+ and one Br1- atom. The Se–Br bond length is 3.12 Å. In the eleventh Se1- site, Se1- is bonded in a 2-coordinate geometry to two Ta+4.50+, one Se1-, and one Br1- atom. The Se–Se bond length is 2.41 Å. The Se–Br bond length is 3.10 Å. In the twelfth Se1- site, Se1- is bonded in a 2-coordinate geometry to two Ta+4.50+ atoms. In the thirteenth Se1- site, Se1- is bonded in a 1-coordinate geometry to two Ta+4.50+, one Se1-, and one Br1- atom. The Se–Br bond length is 3.13 Å. In the fourteenth Se1- site, Se1- is bonded in a 2-coordinate geometry to two Ta+4.50+ and one Se1- atom. In the fifteenth Se1- site, Se1- is bonded in a 2-coordinate geometry to two Ta+4.50+ atoms. In the sixteenth Se1- site, Se1- is bonded in a 2-coordinate geometry to two Ta+4.50+ atoms. There are two inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 1-coordinate geometry to one Ta+4.50+ atom. In the second Br1- site, Br1- is bonded in a 4-coordinate geometry to four Se1- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K3Nb6SBr17 by Materials Project

K3Nb6SBr17 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 10-coordinate geometry to ten Br1- atoms. There are a spread of K–Br bond distances ranging from 3.31–4.00 Å. In the second K1+ site, K1+ is bonded in a 10-coordinate geometry to ten Br1- atoms. There are a spread of K–Br bond distances ranging from 3.47–3.93 Å. There are three inequivalent Nb+2.67+ sites. In the first Nb+2.67+ site, Nb+2.67+ is bonded to one S2- and five Br1- atoms to form a mixture of face, edge, and corner-sharing NbSBr5 octahedra. The corner-sharing octahedra tilt angles range from 40–50°. The Nb–S bond length is 2.38 Å. There are a spread of Nb–Br bond distances ranging from 2.62–2.84 Å. In the second Nb+2.67+ site, Nb+2.67+ is bonded to one S2- and five Br1- atoms to form a mixture of face, edge, and corner-sharing NbSBr5 octahedra. The corner-sharing octahedra tilt angles range from 42–44°. The Nb–S bond length is 2.38 Å. There are a spread of Nb–Br bond distances ranging from 2.60–2.76 Å. In the third Nb+2.67+ site, Nb+2.67+ is bonded to one S2- and five Br1- atoms to form a mixture of face, edge, and corner-sharing NbSBr5 octahedra. The corner-sharing octahedra tilt angles range from 42–43°. The Nb–S bond length is 2.39 Å. There are a spread of Nb–Br bond distances ranging from 2.62–2.73 Å. S2- is bonded in a distorted pentagonal pyramidal geometry to six Nb+2.67+ atoms. There are nine inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a distorted trigonal non-coplanar geometry to two equivalent K1+ and one Nb+2.67+ atom. In the second Br1- site, Br1- is bonded in a 4-coordinate geometry to two equivalent K1+ and two Nb+2.67+ atoms. In the third Br1- site, Br1- is bonded in a 2-coordinate geometry to one K1+ and two Nb+2.67+ atoms. In the fourth Br1- site, Br1- is bonded in a 3-coordinate geometry to one K1+ and two Nb+2.67+ atoms. In the fifth Br1- site, Br1- is bonded in a 2-coordinate geometry to one K1+ and two Nb+2.67+ atoms. In the sixth Br1- site, Br1- is bonded in a 2-coordinate geometry to three K1+ and two equivalent Nb+2.67+ atoms. In the seventh Br1- site, Br1- is bonded in a 5-coordinate geometry to four K1+ and one Nb+2.67+ atom. In the eighth Br1- site, Br1- is bonded in a bent 120 degrees geometry to two equivalent Nb+2.67+ atoms. In the ninth Br1- site, Br1- is bonded in a 3-coordinate geometry to one K1+ and two Nb+2.67+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe7Sb10(Br4O9)2 by Materials Project

Fe7Sb10(O9Br4)2 crystallizes in the triclinic P-1 space group. The structure is two-dimensional and consists of one Fe7Sb10(O9Br4)2 sheet oriented in the (1, 0, 1) direction. there are four inequivalent Fe+2.86+ sites. In the first Fe+2.86+ site, Fe+2.86+ is bonded in a distorted octahedral geometry to three O2- and three Br1- atoms. There are two shorter (2.13 Å) and one longer (2.24 Å) Fe–O bond lengths. There are a spread of Fe–Br bond distances ranging from 2.65–2.87 Å. In the second Fe+2.86+ site, Fe+2.86+ is bonded in a 6-coordinate geometry to four O2- and two Br1- atoms. There are a spread of Fe–O bond distances ranging from 2.06–2.24 Å. There are one shorter (2.67 Å) and one longer (3.10 Å) Fe–Br bond lengths. In the third Fe+2.86+ site, Fe+2.86+ is bonded in a 4-coordinate geometry to four O2- and two Br1- atoms. There are a spread of Fe–O bond distances ranging from 2.06–2.22 Å. There are one shorter (2.87 Å) and one longer (2.92 Å) Fe–Br bond lengths. In the fourth Fe+2.86+ site, Fe+2.86+ is bonded in a distorted linear geometry to two equivalent O2- and four Br1- atoms. Both Fe–O bond lengths are 1.95 Å. There are two shorter (2.75 Å) and two longer (2.92 Å) Fe–Br bond lengths. There are five inequivalent Sb+2.40+ sites. In the first Sb+2.40+ site, Sb+2.40+ is bonded in a 3-coordinate geometry to three O2- atoms. There are a spread of Sb–O bond distances ranging from 1.97–2.08 Å. In the second Sb+2.40+ site, Sb+2.40+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Sb–O bond distances ranging from 2.05–2.20 Å. In the third Sb+2.40+ site, Sb+2.40+ is bonded in a 3-coordinate geometry to three O2- and one Br1- atom. There are a spread of Sb–O bond distances ranging from 2.01–2.09 Å. The Sb–Br bond length is 3.15 Å. In the fourth Sb+2.40+ site, Sb+2.40+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Sb–O bond distances ranging from 2.04–2.25 Å. In the fifth Sb+2.40+ site, Sb+2.40+ is bonded in a distorted T-shaped geometry to three O2- atoms. There are a spread of Sb–O bond distances ranging from 2.01–2.03 Å. There are nine inequivalent O2- sites. In the first O2- site, O2- is bonded to three Fe+2.86+ and one Sb+2.40+ atom to form a mixture of corner and edge-sharing OFe3Sb tetrahedra. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to one Fe+2.86+ and two equivalent Sb+2.40+ atoms. In the third O2- site, O2- is bonded to three Fe+2.86+ and one Sb+2.40+ atom to form a mixture of corner and edge-sharing OFe3Sb tetrahedra. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Fe+2.86+ and two Sb+2.40+ atoms. In the fifth O2- site, O2- is bonded in a trigonal planar geometry to one Fe+2.86+ and two Sb+2.40+ atoms. In the sixth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Fe+2.86+ and two Sb+2.40+ atoms. In the seventh O2- site, O2- is bonded in a 3-coordinate geometry to three Sb+2.40+ atoms. In the eighth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Sb+2.40+ atoms. In the ninth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Fe+2.86+ and two Sb+2.40+ atoms. There are four inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a distorted L-shaped geometry to two Fe+2.86+ atoms. In the second Br1- site, Br1- is bonded in a 1-coordinate geometry to two Fe+2.86+ and one Sb+2.40+ atom. In the third Br1- site, Br1- is bonded in a distorted L-shaped geometry to two Fe+2.86+ atoms. In the fourth Br1- site, Br1- is bonded in a 3-coordinate geometry to three Fe+2.86+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Rb3Bi2Br9 by Materials Project

Rb3Bi2Br9 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are three inequivalent Rb1+ sites. In the first Rb1+ site, Rb1+ is bonded in a 8-coordinate geometry to eight Br1- atoms. There are a spread of Rb–Br bond distances ranging from 3.55–4.03 Å. In the second Rb1+ site, Rb1+ is bonded in a 8-coordinate geometry to eight Br1- atoms. There are a spread of Rb–Br bond distances ranging from 3.55–4.03 Å. In the third Rb1+ site, Rb1+ is bonded in a 9-coordinate geometry to nine Br1- atoms. There are a spread of Rb–Br bond distances ranging from 3.55–4.13 Å. There are two inequivalent Bi3+ sites. In the first Bi3+ site, Bi3+ is bonded to six Br1- atoms to form corner-sharing BiBr6 octahedra. The corner-sharing octahedra tilt angles range from 28–32°. There are a spread of Bi–Br bond distances ranging from 2.76–3.09 Å. In the second Bi3+ site, Bi3+ is bonded to six Br1- atoms to form corner-sharing BiBr6 octahedra. The corner-sharing octahedra tilt angles range from 28–32°. There are a spread of Bi–Br bond distances ranging from 2.76–3.06 Å. There are nine inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 3-coordinate geometry to two equivalent Rb1+ and one Bi3+ atom. In the second Br1- site, Br1- is bonded in a 3-coordinate geometry to three Rb1+ and one Bi3+ atom. In the third Br1- site, Br1- is bonded in a 4-coordinate geometry to three Rb1+ and one Bi3+ atom. In the fourth Br1- site, Br1- is bonded in a 4-coordinate geometry to three Rb1+ and one Bi3+ atom. In the fifth Br1- site, Br1- is bonded in a 4-coordinate geometry to three Rb1+ and one Bi3+ atom. In the sixth Br1- site, Br1- is bonded in a distorted tetrahedral geometry to two Rb1+ and two Bi3+ atoms. In the seventh Br1- site, Br1- is bonded in a distorted rectangular see-saw-like geometry to three equivalent Rb1+ and one Bi3+ atom. In the eighth Br1- site, Br1- is bonded in a 5-coordinate geometry to three Rb1+ and two Bi3+ atoms. In the ninth Br1- site, Br1- is bonded in a 5-coordinate geometry to three Rb1+ and two Bi3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Pb12BrCl7O8 by Materials Project

Pb12O8BrCl7 crystallizes in the monoclinic Pm space group. The structure is three-dimensional. there are twelve inequivalent Pb2+ sites. In the first Pb2+ site, Pb2+ is bonded in a 2-coordinate geometry to two equivalent O2-, one Br1-, and four Cl1- atoms. Both Pb–O bond lengths are 2.30 Å. The Pb–Br bond length is 3.63 Å. There are a spread of Pb–Cl bond distances ranging from 2.98–3.32 Å. In the second Pb2+ site, Pb2+ is bonded in a 2-coordinate geometry to two equivalent O2- and four Cl1- atoms. Both Pb–O bond lengths are 2.30 Å. There are a spread of Pb–Cl bond distances ranging from 3.00–3.33 Å. In the third Pb2+ site, Pb2+ is bonded in a 2-coordinate geometry to two equivalent O2-, two equivalent Br1-, and two Cl1- atoms. Both Pb–O bond lengths are 2.31 Å. Both Pb–Br bond lengths are 3.37 Å. There are one shorter (3.02 Å) and one longer (3.20 Å) Pb–Cl bond lengths. In the fourth Pb2+ site, Pb2+ is bonded in a 2-coordinate geometry to two equivalent O2- and four Cl1- atoms. Both Pb–O bond lengths are 2.30 Å. There are a spread of Pb–Cl bond distances ranging from 3.00–3.32 Å. In the fifth Pb2+ site, Pb2+ is bonded in a distorted L-shaped geometry to two equivalent O2-, one Br1-, and three Cl1- atoms. Both Pb–O bond lengths are 2.25 Å. The Pb–Br bond length is 3.12 Å. There are one shorter (3.13 Å) and two longer (3.63 Å) Pb–Cl bond lengths. In the sixth Pb2+ site, Pb2+ is bonded in a 2-coordinate geometry to two equivalent O2- and four Cl1- atoms. Both Pb–O bond lengths are 2.25 Å. There are a spread of Pb–Cl bond distances ranging from 2.94–3.61 Å. In the seventh Pb2+ site, Pb2+ is bonded in a 2-coordinate geometry to two equivalent O2- and four Cl1- atoms. Both Pb–O bond lengths are 2.25 Å. There are a spread of Pb–Cl bond distances ranging from 2.95–3.61 Å. In the eighth Pb2+ site, Pb2+ is bonded in a 2-coordinate geometry to two equivalent O2- and four Cl1- atoms. Both Pb–O bond lengths are 2.25 Å. There are a spread of Pb–Cl bond distances ranging from 2.95–3.61 Å. In the ninth Pb2+ site, Pb2+ is bonded in a 7-coordinate geometry to four O2- and three Cl1- atoms. There are two shorter (2.38 Å) and two longer (2.48 Å) Pb–O bond lengths. There are two shorter (3.44 Å) and one longer (3.45 Å) Pb–Cl bond lengths. In the tenth Pb2+ site, Pb2+ is bonded in a 4-coordinate geometry to four O2-, one Br1-, and two equivalent Cl1- atoms. There are two shorter (2.38 Å) and two longer (2.48 Å) Pb–O bond lengths. The Pb–Br bond length is 3.49 Å. Both Pb–Cl bond lengths are 3.44 Å. In the eleventh Pb2+ site, Pb2+ is bonded in a 7-coordinate geometry to four O2- and three Cl1- atoms. There are two shorter (2.38 Å) and two longer (2.48 Å) Pb–O bond lengths. There are two shorter (3.43 Å) and one longer (3.45 Å) Pb–Cl bond lengths. In the twelfth Pb2+ site, Pb2+ is bonded in a 7-coordinate geometry to four O2- and three Cl1- atoms. There are two shorter (2.38 Å) and two longer (2.48 Å) Pb–O bond lengths. There are two shorter (3.43 Å) and one longer (3.44 Å) Pb–Cl bond lengths. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded to four Pb2+ atoms to form a mixture of distorted edge and corner-sharing OPb4 tetrahedra. In the second O2- site, O2- is bonded to four Pb2+ atoms to form a mixture of distorted edge and corner-sharing OPb4 tetrahedra. In the third O2- site, O2- is bonded to four Pb2+ atoms to form a mixture of distorted edge and corner-sharing OPb4 tetrahedra. In the fourth O2- site, O2- is bonded to four Pb2+ atoms to form a mixture of distorted edge and corner-sharing OPb4 tetrahedra. Br1- is bonded in a 5-coordinate geometry to five Pb2+ and one Cl1- atom. The Br–Cl bond length is 3.81 Å. There are seven inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a 8-coordinate geometry to seven Pb2+ and one Br1- atom. In the second Cl1- site, Cl1- is bonded in a 7-coordinate geometry to seven Pb2+ atoms. In the third Cl1- site, Cl1- is bonded in a 7-coordinate geometry to seven Pb2+ atoms. In the fourth Cl1- site, Cl1- is bonded in a 7-coordinate geometry to seven Pb2+ atoms. In the fifth Cl1- site, Cl1- is bonded in a 1-coordinate geometry to four Pb2+ atoms. In the sixth Cl1- site, Cl1- is bonded in a 1-coordinate geometry to four Pb2+ atoms. In the seventh Cl1- site, Cl1- is bonded in a 1-coordinate geometry to four Pb2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tc4Br7O by Materials Project

Tc4OBr7 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four Tc4OBr7 clusters. there are four inequivalent Tc+2.25+ sites. In the first Tc+2.25+ site, Tc+2.25+ is bonded in a 3-coordinate geometry to three Br1- atoms. There are a spread of Tc–Br bond distances ranging from 2.55–2.80 Å. In the second Tc+2.25+ site, Tc+2.25+ is bonded in a distorted T-shaped geometry to three Br1- atoms. There are a spread of Tc–Br bond distances ranging from 2.53–2.58 Å. In the third Tc+2.25+ site, Tc+2.25+ is bonded in a distorted T-shaped geometry to three Br1- atoms. There are one shorter (2.51 Å) and two longer (2.53 Å) Tc–Br bond lengths. In the fourth Tc+2.25+ site, Tc+2.25+ is bonded in a 4-coordinate geometry to three Br1- atoms. There are a spread of Tc–Br bond distances ranging from 2.53–2.90 Å. O2- is bonded in a distorted single-bond geometry to one Br1- atom. The O–Br bond length is 1.74 Å. There are seven inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 1-coordinate geometry to two Tc+2.25+ atoms. In the second Br1- site, Br1- is bonded in a water-like geometry to one Tc+2.25+ and one O2- atom. In the third Br1- site, Br1- is bonded in a distorted single-bond geometry to one Tc+2.25+ atom. In the fourth Br1- site, Br1- is bonded in a 2-coordinate geometry to two Tc+2.25+ atoms. In the fifth Br1- site, Br1- is bonded in a 2-coordinate geometry to two Tc+2.25+ atoms. In the sixth Br1- site, Br1- is bonded in a 2-coordinate geometry to two Tc+2.25+ atoms. In the seventh Br1- site, Br1- is bonded in a 2-coordinate geometry to two Tc+2.25+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ge2Br7N3 by Materials Project

Ge2N3Br7 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent Ge4+ sites. In the first Ge4+ site, Ge4+ is bonded in a trigonal non-coplanar geometry to three Br1- atoms. There are one shorter (2.35 Å) and two longer (2.36 Å) Ge–Br bond lengths. In the second Ge4+ site, Ge4+ is bonded in a tetrahedral geometry to four Br1- atoms. There are two shorter (2.30 Å) and two longer (2.31 Å) Ge–Br bond lengths. There are three inequivalent N+0.33- sites. In the first N+0.33- site, N+0.33- is bonded in a 6-coordinate geometry to six Br1- atoms. There are a spread of N–Br bond distances ranging from 3.55–3.83 Å. In the second N+0.33- site, N+0.33- is bonded in a 6-coordinate geometry to six Br1- atoms. There are a spread of N–Br bond distances ranging from 3.47–3.89 Å. In the third N+0.33- site, N+0.33- is bonded in a 5-coordinate geometry to five Br1- atoms. There are a spread of N–Br bond distances ranging from 3.57–3.91 Å. There are seven inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a single-bond geometry to one Ge4+ and two N+0.33- atoms. In the second Br1- site, Br1- is bonded in a single-bond geometry to one Ge4+ and three N+0.33- atoms. In the third Br1- site, Br1- is bonded in a single-bond geometry to one Ge4+ and four N+0.33- atoms. In the fourth Br1- site, Br1- is bonded in a single-bond geometry to one Ge4+ and two N+0.33- atoms. In the fifth Br1- site, Br1- is bonded in a single-bond geometry to one Ge4+ and three N+0.33- atoms. In the sixth Br1- site, Br1- is bonded in a single-bond geometry to one Ge4+ and three N+0.33- atoms. In the seventh Br1- site, Br1- is bonded in a single-bond geometry to one Ge4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Nb6Tl3SBr17 by Materials Project

Nb6Tl3SBr17 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are three inequivalent Nb+2.67+ sites. In the first Nb+2.67+ site, Nb+2.67+ is bonded in a trigonal non-coplanar geometry to three Br1- atoms. There are a spread of Nb–Br bond distances ranging from 2.52–2.60 Å. In the second Nb+2.67+ site, Nb+2.67+ is bonded in a distorted square co-planar geometry to four Br1- atoms. There are a spread of Nb–Br bond distances ranging from 2.51–2.76 Å. In the third Nb+2.67+ site, Nb+2.67+ is bonded to one S2- and five Br1- atoms to form corner-sharing NbSBr5 octahedra. The corner-sharing octahedra tilt angles range from 24–38°. The Nb–S bond length is 2.29 Å. There are a spread of Nb–Br bond distances ranging from 2.52–2.90 Å. There are two inequivalent Tl1+ sites. In the first Tl1+ site, Tl1+ is bonded in a 8-coordinate geometry to eight Br1- atoms. There are a spread of Tl–Br bond distances ranging from 3.14–3.98 Å. In the second Tl1+ site, Tl1+ is bonded in a 8-coordinate geometry to eight Br1- atoms. There are a spread of Tl–Br bond distances ranging from 3.21–4.10 Å. S2- is bonded in a bent 150 degrees geometry to two equivalent Nb+2.67+ atoms. There are nine inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 1-coordinate geometry to one Nb+2.67+ and two Tl1+ atoms. In the second Br1- site, Br1- is bonded in a 1-coordinate geometry to one Nb+2.67+ and three Tl1+ atoms. In the third Br1- site, Br1- is bonded in a distorted bent 150 degrees geometry to two Nb+2.67+ and one Tl1+ atom. In the fourth Br1- site, Br1- is bonded in a distorted L-shaped geometry to one Nb+2.67+ and one Tl1+ atom. In the fifth Br1- site, Br1- is bonded in a distorted L-shaped geometry to one Nb+2.67+ and one Tl1+ atom. In the sixth Br1- site, Br1- is bonded in a single-bond geometry to one Nb+2.67+ and one Tl1+ atom. In the seventh Br1- site, Br1- is bonded in a bent 120 degrees geometry to two Nb+2.67+ atoms. In the eighth Br1- site, Br1- is bonded in a 2-coordinate geometry to two equivalent Nb+2.67+ and two Tl1+ atoms. In the ninth Br1- site, Br1- is bonded in a 4-coordinate geometry to two equivalent Nb+2.67+ and two equivalent Tl1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Hg3S2BrCl by Materials Project

Hg3S2BrCl crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are five inequivalent Hg2+ sites. In the first Hg2+ site, Hg2+ is bonded in a 5-coordinate geometry to two S2-, one Br1-, and two Cl1- atoms. There are one shorter (2.46 Å) and one longer (2.47 Å) Hg–S bond lengths. The Hg–Br bond length is 3.44 Å. There are one shorter (2.81 Å) and one longer (3.06 Å) Hg–Cl bond lengths. In the second Hg2+ site, Hg2+ is bonded in a 5-coordinate geometry to two equivalent S2-, one Br1-, and two equivalent Cl1- atoms. Both Hg–S bond lengths are 2.45 Å. The Hg–Br bond length is 3.33 Å. There are one shorter (2.87 Å) and one longer (3.08 Å) Hg–Cl bond lengths. In the third Hg2+ site, Hg2+ is bonded to two equivalent S2- and four Br1- atoms to form a mixture of edge and corner-sharing HgS2Br4 octahedra. The corner-sharing octahedra tilt angles range from 2–7°. Both Hg–S bond lengths are 2.45 Å. There are two shorter (3.29 Å) and two longer (3.30 Å) Hg–Br bond lengths. In the fourth Hg2+ site, Hg2+ is bonded in a 5-coordinate geometry to two equivalent S2-, one Br1-, and two Cl1- atoms. Both Hg–S bond lengths are 2.44 Å. The Hg–Br bond length is 3.49 Å. There are one shorter (2.85 Å) and one longer (3.29 Å) Hg–Cl bond lengths. In the fifth Hg2+ site, Hg2+ is bonded to two equivalent S2- and four Br1- atoms to form a mixture of edge and corner-sharing HgS2Br4 octahedra. The corner-sharing octahedra tilt angles range from 2–7°. Both Hg–S bond lengths are 2.44 Å. There are two shorter (3.27 Å) and two longer (3.33 Å) Hg–Br bond lengths. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a 3-coordinate geometry to three Hg2+ atoms. In the second S2- site, S2- is bonded in a 3-coordinate geometry to three Hg2+ atoms. There are two inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 7-coordinate geometry to seven Hg2+ atoms. In the second Br1- site, Br1- is bonded in a 5-coordinate geometry to five Hg2+ atoms. There are two inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a 5-coordinate geometry to five Hg2+ atoms. In the second Cl1- site, Cl1- is bonded in a distorted trigonal planar geometry to three Hg2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ba10IBr4N5 by Materials Project

Ba10N5IBr4 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are five inequivalent Ba2+ sites. In the first Ba2+ site, Ba2+ is bonded to three N3-, one I1-, and two Br1- atoms to form a mixture of distorted corner and edge-sharing BaIBr2N3 octahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are a spread of Ba–N bond distances ranging from 2.81–2.86 Å. The Ba–I bond length is 3.56 Å. Both Ba–Br bond lengths are 3.53 Å. In the second Ba2+ site, Ba2+ is bonded to three N3-, one I1-, and two equivalent Br1- atoms to form a mixture of distorted corner and edge-sharing BaIBr2N3 octahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are one shorter (2.81 Å) and two longer (2.86 Å) Ba–N bond lengths. The Ba–I bond length is 3.56 Å. There are one shorter (3.52 Å) and one longer (3.53 Å) Ba–Br bond lengths. In the third Ba2+ site, Ba2+ is bonded to three N3- and three Br1- atoms to form a mixture of distorted corner and edge-sharing BaBr3N3 octahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are two shorter (2.85 Å) and one longer (2.86 Å) Ba–N bond lengths. All Ba–Br bond lengths are 3.51 Å. In the fourth Ba2+ site, Ba2+ is bonded to three N3- and three Br1- atoms to form a mixture of distorted corner and edge-sharing BaBr3N3 octahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are a spread of Ba–N bond distances ranging from 2.84–2.86 Å. There are two shorter (3.51 Å) and one longer (3.52 Å) Ba–Br bond lengths. In the fifth Ba2+ site, Ba2+ is bonded to three N3-, one I1-, and two Br1- atoms to form a mixture of distorted corner and edge-sharing BaIBr2N3 octahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are one shorter (2.82 Å) and two longer (2.85 Å) Ba–N bond lengths. The Ba–I bond length is 3.56 Å. There are one shorter (3.53 Å) and one longer (3.54 Å) Ba–Br bond lengths. There are three inequivalent N3- sites. In the first N3- site, N3- is bonded to six Ba2+ atoms to form edge-sharing NBa6 octahedra. In the second N3- site, N3- is bonded to six Ba2+ atoms to form edge-sharing NBa6 octahedra. In the third N3- site, N3- is bonded to six Ba2+ atoms to form edge-sharing NBa6 octahedra. I1- is bonded in a 12-coordinate geometry to six Ba2+ atoms. There are two inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 6-coordinate geometry to six Ba2+ atoms. In the second Br1- site, Br1- is bonded in a 6-coordinate geometry to six Ba2+ atoms.

36 MATERIALS SCIENCE↗