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DOE OSTI2020

Materials Data on Hg8Br3O4 by Materials Project

Hg8O4Br3 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are eight inequivalent Hg+1.38+ sites. In the first Hg+1.38+ site, Hg+1.38+ is bonded in a 2-coordinate geometry to two O2- and two equivalent Br1- atoms. There are one shorter (2.12 Å) and one longer (2.13 Å) Hg–O bond lengths. There are one shorter (3.18 Å) and one longer (3.38 Å) Hg–Br bond lengths. In the second Hg+1.38+ site, Hg+1.38+ is bonded in a 3-coordinate geometry to one Hg+1.38+, two O2-, and one Br1- atom. The Hg–Hg bond length is 2.75 Å. There are one shorter (2.41 Å) and one longer (2.45 Å) Hg–O bond lengths. The Hg–Br bond length is 2.83 Å. In the third Hg+1.38+ site, Hg+1.38+ is bonded in a distorted L-shaped geometry to one Hg+1.38+ and one Br1- atom. The Hg–Hg bond length is 3.12 Å. The Hg–Br bond length is 3.83 Å. In the fourth Hg+1.38+ site, Hg+1.38+ is bonded in a distorted trigonal planar geometry to one O2- and two Br1- atoms. The Hg–O bond length is 3.07 Å. There are one shorter (3.17 Å) and one longer (3.42 Å) Hg–Br bond lengths. In the fifth Hg+1.38+ site, Hg+1.38+ is bonded in a distorted bent 120 degrees geometry to one Hg+1.38+, one O2-, and one Br1- atom. The Hg–O bond length is 3.04 Å. The Hg–Br bond length is 2.83 Å. In the sixth Hg+1.38+ site, Hg+1.38+ is bonded in a distorted single-bond geometry to one Hg+1.38+, one O2-, and one Br1- atom. The Hg–O bond length is 2.51 Å. The Hg–Br bond length is 3.52 Å. In the seventh Hg+1.38+ site, Hg+1.38+ is bonded in a 2-coordinate geometry to one Hg+1.38+ and two equivalent Br1- atoms. The Hg–Hg bond length is 2.64 Å. There are one shorter (2.56 Å) and one longer (3.14 Å) Hg–Br bond lengths. In the eighth Hg+1.38+ site, Hg+1.38+ is bonded in a 3-coordinate geometry to three O2- and one Br1- atom. There are two shorter (2.31 Å) and one longer (2.35 Å) Hg–O bond lengths. The Hg–Br bond length is 3.08 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded to four Hg+1.38+ atoms to form corner-sharing OHg4 tetrahedra. In the second O2- site, O2- is bonded in a bent 120 degrees geometry to one Hg+1.38+ and one Br1- atom. The O–Br bond length is 1.78 Å. In the third O2- site, O2- is bonded in a 1-coordinate geometry to two Hg+1.38+ and one O2- atom. The O–O bond length is 1.42 Å. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to three Hg+1.38+ and one O2- atom. There are three inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 1-coordinate geometry to three Hg+1.38+ and one O2- atom. In the second Br1- site, Br1- is bonded in a distorted L-shaped geometry to three Hg+1.38+ atoms. In the third Br1- site, Br1- is bonded in a 5-coordinate geometry to five Hg+1.38+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on La10Ga5Br4 by Materials Project

La10Br4Ga5 crystallizes in the tetragonal I4/mcm space group. The structure is three-dimensional. there are three inequivalent La sites. In the first La site, La is bonded to five Ga atoms to form a mixture of distorted edge and corner-sharing LaGa5 trigonal bipyramids. There are a spread of La–Ga bond distances ranging from 3.28–3.41 Å. In the second La site, La is bonded in a 8-coordinate geometry to three equivalent Ga and five Br atoms. There are one shorter (3.13 Å) and two longer (3.17 Å) La–Ga bond lengths. There are a spread of La–Br bond distances ranging from 3.10–3.52 Å. In the third La site, La is bonded in a 6-coordinate geometry to five Ga and one Br atom. There are one shorter (3.13 Å) and four longer (3.31 Å) La–Ga bond lengths. The La–Br bond length is 3.19 Å. There are two inequivalent Ga sites. In the first Ga site, Ga is bonded in a 9-coordinate geometry to eight La and one Ga atom. The Ga–Ga bond length is 2.84 Å. In the second Ga site, Ga is bonded in a distorted q6 geometry to ten La atoms. There are two inequivalent Br sites. In the first Br site, Br is bonded to five La atoms to form corner-sharing BrLa5 square pyramids. In the second Br site, Br is bonded in a 6-coordinate geometry to six equivalent La atoms.

36 MATERIALS SCIENCE↗
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Materials Data on LiH2BrO5 by Materials Project

LiH2O5Br crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are two inequivalent Li sites. In the first Li site, Li is bonded in a square co-planar geometry to four O atoms. There are two shorter (1.93 Å) and two longer (2.11 Å) Li–O bond lengths. In the second Li site, Li is bonded in a distorted see-saw-like geometry to four O atoms. There are two shorter (2.02 Å) and two longer (2.10 Å) Li–O bond lengths. There are two inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the second H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. There are five inequivalent O sites. In the first O site, O is bonded in a 1-coordinate geometry to one Li, one H, and one Br atom. The O–Br bond length is 2.08 Å. In the second O site, O is bonded in a linear geometry to one Li and one Br atom. The O–Br bond length is 1.66 Å. In the third O site, O is bonded in a distorted trigonal non-coplanar geometry to one Li, one O, and one Br atom. The O–O bond length is 1.45 Å. The O–Br bond length is 2.29 Å. In the fourth O site, O is bonded in a linear geometry to one Li and one Br atom. The O–Br bond length is 1.67 Å. In the fifth O site, O is bonded in a single-bond geometry to one H and one O atom. Br is bonded in a 4-coordinate geometry to four O atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NaH2BrO5 by Materials Project

NaH2O5Br crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are two inequivalent Na sites. In the first Na site, Na is bonded in a distorted hexagonal bipyramidal geometry to two equivalent H and six O atoms. Both Na–H bond lengths are 2.41 Å. There are four shorter (2.31 Å) and two longer (2.45 Å) Na–O bond lengths. In the second Na site, Na is bonded in a distorted hexagonal planar geometry to six O atoms. There are a spread of Na–O bond distances ranging from 2.45–2.67 Å. There are two inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the second H site, H is bonded in a single-bond geometry to one Na and one O atom. The H–O bond length is 1.00 Å. There are five inequivalent O sites. In the first O site, O is bonded in a single-bond geometry to one Na, one H, and one O atom. The O–O bond length is 1.49 Å. In the second O site, O is bonded in a bent 150 degrees geometry to one Na and one Br atom. The O–Br bond length is 1.68 Å. In the third O site, O is bonded in a water-like geometry to one Na and one Br atom. The O–Br bond length is 1.66 Å. In the fourth O site, O is bonded in a distorted single-bond geometry to one Na, one H, and one Br atom. The O–Br bond length is 2.02 Å. In the fifth O site, O is bonded in a rectangular see-saw-like geometry to two Na, one O, and one Br atom. The O–Br bond length is 2.36 Å. Br is bonded in a 4-coordinate geometry to four O atoms.

36 MATERIALS SCIENCE↗
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Materials Data on La3NiBr3 by Materials Project

La3NiBr3 crystallizes in the tetragonal I4_122 space group. The structure is three-dimensional. there are two inequivalent La sites. In the first La site, La is bonded to two equivalent Ni and four equivalent Br atoms to form a mixture of corner and edge-sharing LaNi2Br4 octahedra. The corner-sharing octahedra tilt angles range from 6–11°. Both La–Ni bond lengths are 2.93 Å. There are two shorter (3.07 Å) and two longer (3.20 Å) La–Br bond lengths. In the second La site, La is bonded to two equivalent Ni and four Br atoms to form a mixture of corner and edge-sharing LaNi2Br4 octahedra. The corner-sharing octahedra tilt angles range from 3–11°. There are one shorter (2.63 Å) and one longer (2.93 Å) La–Ni bond lengths. There are a spread of La–Br bond distances ranging from 3.14–3.22 Å. Ni is bonded to six La atoms to form edge-sharing NiLa6 octahedra. There are two inequivalent Br sites. In the first Br site, Br is bonded in a rectangular see-saw-like geometry to four equivalent La atoms. In the second Br site, Br is bonded in a rectangular see-saw-like geometry to four La atoms.

36 MATERIALS SCIENCE↗
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Materials Data on RbSeBr3 by Materials Project

RbSeBr3 crystallizes in the monoclinic P2_1/m space group. The structure is three-dimensional. Rb is bonded in a 9-coordinate geometry to two equivalent Se and seven Br atoms. Both Rb–Se bond lengths are 4.02 Å. There are a spread of Rb–Br bond distances ranging from 3.49–3.99 Å. Se is bonded in a distorted square co-planar geometry to two equivalent Rb and four Br atoms. There are two shorter (2.62 Å) and two longer (2.64 Å) Se–Br bond lengths. There are two inequivalent Br sites. In the first Br site, Br is bonded in a distorted bent 120 degrees geometry to one Rb and two equivalent Se atoms. In the second Br site, Br is bonded to three equivalent Rb and one Se atom to form a mixture of distorted edge and corner-sharing BrRb3Se trigonal pyramids.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CsSeBr3 by Materials Project

CsSeBr3 crystallizes in the monoclinic P2_1/m space group. The structure is three-dimensional. Cs is bonded in a 9-coordinate geometry to two equivalent Se and seven Br atoms. Both Cs–Se bond lengths are 4.06 Å. There are a spread of Cs–Br bond distances ranging from 3.67–4.19 Å. Se is bonded in a distorted square co-planar geometry to two equivalent Cs and four Br atoms. There are two shorter (2.61 Å) and two longer (2.64 Å) Se–Br bond lengths. There are two inequivalent Br sites. In the first Br site, Br is bonded in a distorted bent 120 degrees geometry to one Cs and two equivalent Se atoms. In the second Br site, Br is bonded to three equivalent Cs and one Se atom to form a mixture of distorted edge and corner-sharing BrCs3Se trigonal pyramids.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KDyBr3 by Materials Project

KDyBr3 is Orthorhombic Perovskite structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. K is bonded in a 8-coordinate geometry to eight Br atoms. There are a spread of K–Br bond distances ranging from 3.35–3.86 Å. Dy is bonded to six Br atoms to form corner-sharing DyBr6 octahedra. The corner-sharing octahedra tilt angles range from 30–33°. There are two shorter (2.87 Å) and four longer (2.88 Å) Dy–Br bond lengths. There are two inequivalent Br sites. In the first Br site, Br is bonded in a 5-coordinate geometry to three equivalent K and two equivalent Dy atoms. In the second Br site, Br is bonded to two equivalent K and two equivalent Dy atoms to form distorted corner-sharing BrK2Dy2 trigonal pyramids.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LiH2BrO5 by Materials Project

LiH2O5Br crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are two inequivalent Li sites. In the first Li site, Li is bonded in a square co-planar geometry to four O atoms. There are two shorter (1.98 Å) and two longer (2.11 Å) Li–O bond lengths. In the second Li site, Li is bonded to four O atoms to form distorted LiO4 trigonal pyramids that share corners with four equivalent BrO4 trigonal pyramids. There are two shorter (2.02 Å) and two longer (2.05 Å) Li–O bond lengths. There are two inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the second H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. There are five inequivalent O sites. In the first O site, O is bonded in a 1-coordinate geometry to one Li, one H, and one Br atom. The O–Br bond length is 2.06 Å. In the second O site, O is bonded in a linear geometry to one Li and one Br atom. The O–Br bond length is 1.66 Å. In the third O site, O is bonded in a distorted trigonal non-coplanar geometry to one Li, one O, and one Br atom. The O–O bond length is 1.45 Å. The O–Br bond length is 2.19 Å. In the fourth O site, O is bonded in a bent 150 degrees geometry to one Li and one Br atom. The O–Br bond length is 1.66 Å. In the fifth O site, O is bonded in a single-bond geometry to one H and one O atom. Br is bonded to four O atoms to form distorted BrO4 trigonal pyramids that share corners with two equivalent LiO4 trigonal pyramids.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on RbTmBr3 by Materials Project

RbTmBr3 is Orthorhombic Perovskite structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Rb is bonded in a 8-coordinate geometry to eight Br atoms. There are a spread of Rb–Br bond distances ranging from 3.48–3.82 Å. Tm is bonded to six Br atoms to form corner-sharing TmBr6 octahedra. The corner-sharing octahedral tilt angles are 24°. There are four shorter (2.84 Å) and two longer (2.85 Å) Tm–Br bond lengths. There are two inequivalent Br sites. In the first Br site, Br is bonded in a 5-coordinate geometry to three equivalent Rb and two equivalent Tm atoms. In the second Br site, Br is bonded in a 4-coordinate geometry to two equivalent Rb and two equivalent Tm atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CsTmBr3 by Materials Project

CsTmBr3 is (Cubic) Perovskite-like structured and crystallizes in the tetragonal P4/mbm space group. The structure is three-dimensional. Cs is bonded to twelve Br atoms to form CsBr12 cuboctahedra that share corners with twelve equivalent CsBr12 cuboctahedra, faces with six equivalent CsBr12 cuboctahedra, and faces with eight equivalent TmBr6 octahedra. There are a spread of Cs–Br bond distances ranging from 3.81–4.13 Å. Tm is bonded to six Br atoms to form TmBr6 octahedra that share corners with six equivalent TmBr6 octahedra and faces with eight equivalent CsBr12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–9°. All Tm–Br bond lengths are 2.81 Å. There are two inequivalent Br sites. In the first Br site, Br is bonded in a distorted linear geometry to four equivalent Cs and two equivalent Tm atoms. In the second Br site, Br is bonded in a 2-coordinate geometry to four equivalent Cs and two equivalent Tm atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tb7RhBr12 by Materials Project

Tb7RhBr12 is trigonal omega-derived structured and crystallizes in the trigonal R-3 space group. The structure is three-dimensional. there are two inequivalent Tb sites. In the first Tb site, Tb is bonded to one Rh and five Br atoms to form a mixture of corner and edge-sharing TbRhBr5 octahedra. The corner-sharing octahedra tilt angles range from 0–3°. The Tb–Rh bond length is 2.68 Å. There are a spread of Tb–Br bond distances ranging from 2.91–3.14 Å. In the second Tb site, Tb is bonded to six equivalent Br atoms to form edge-sharing TbBr6 octahedra. All Tb–Br bond lengths are 2.83 Å. Rh is bonded in an octahedral geometry to six equivalent Tb atoms. There are two inequivalent Br sites. In the first Br site, Br is bonded in a T-shaped geometry to three equivalent Tb atoms. In the second Br site, Br is bonded in a distorted T-shaped geometry to three Tb atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Pb4Br3NO16 by Materials Project

Pb4NO16Br3 crystallizes in the monoclinic Cc space group. The structure is three-dimensional. there are four inequivalent Pb3+ sites. In the first Pb3+ site, Pb3+ is bonded in a 6-coordinate geometry to seven O2- atoms. There are a spread of Pb–O bond distances ranging from 2.34–3.04 Å. In the second Pb3+ site, Pb3+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Pb–O bond distances ranging from 2.33–2.87 Å. In the third Pb3+ site, Pb3+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Pb–O bond distances ranging from 2.34–3.02 Å. In the fourth Pb3+ site, Pb3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Pb–O bond distances ranging from 2.30–3.08 Å. N5+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.26 Å) and one longer (1.27 Å) N–O bond length. There are sixteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two Pb3+ and one Br5+ atom. The O–Br bond length is 1.72 Å. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one Pb3+ and one Br5+ atom. The O–Br bond length is 1.70 Å. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one Pb3+ and one Br5+ atom. The O–Br bond length is 1.67 Å. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to one Pb3+ and one Br5+ atom. The O–Br bond length is 1.70 Å. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to one Pb3+ and one Br5+ atom. The O–Br bond length is 1.70 Å. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to one Pb3+ and one Br5+ atom. The O–Br bond length is 1.68 Å. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to two Pb3+ and one Br5+ atom. The O–Br bond length is 1.70 Å. In the eighth O2- site, O2- is bonded in a 1-coordinate geometry to two Pb3+ and one Br5+ atom. The O–Br bond length is 1.72 Å. In the ninth O2- site, O2- is bonded in a single-bond geometry to one Br5+ atom. The O–Br bond length is 1.67 Å. In the tenth O2- site, O2- is bonded in a trigonal non-coplanar geometry to three Pb3+ atoms. In the eleventh O2- site, O2- is bonded in a trigonal non-coplanar geometry to three Pb3+ atoms. In the twelfth O2- site, O2- is bonded in a trigonal non-coplanar geometry to three Pb3+ atoms. In the thirteenth O2- site, O2- is bonded in a trigonal non-coplanar geometry to three Pb3+ atoms. In the fourteenth O2- site, O2- is bonded in a single-bond geometry to one Pb3+ and one N5+ atom. In the fifteenth O2- site, O2- is bonded in a single-bond geometry to one Pb3+ and one N5+ atom. In the sixteenth O2- site, O2- is bonded in a single-bond geometry to one N5+ atom. There are three inequivalent Br5+ sites. In the first Br5+ site, Br5+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. In the second Br5+ site, Br5+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. In the third Br5+ site, Br5+ is bonded in a trigonal non-coplanar geometry to three O2- atoms.

36 MATERIALS SCIENCE↗
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Materials Data on KTmBr3 by Materials Project

KTmBr3 is Orthorhombic Perovskite structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. K is bonded in a 8-coordinate geometry to eight Br atoms. There are a spread of K–Br bond distances ranging from 3.34–3.81 Å. Tm is bonded to six Br atoms to form corner-sharing TmBr6 octahedra. The corner-sharing octahedra tilt angles range from 29–32°. There are four shorter (2.84 Å) and two longer (2.85 Å) Tm–Br bond lengths. There are two inequivalent Br sites. In the first Br site, Br is bonded in a 5-coordinate geometry to three equivalent K and two equivalent Tm atoms. In the second Br site, Br is bonded to two equivalent K and two equivalent Tm atoms to form distorted corner-sharing BrK2Tm2 trigonal pyramids.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KAu(Br2O)2 by Materials Project

KAu(OBr2)2 crystallizes in the monoclinic P2_1/c space group. The structure is one-dimensional and consists of two KAu(OBr2)2 ribbons oriented in the (1, 0, 1) direction. K1+ is bonded in a linear geometry to two equivalent O2- atoms. Both K–O bond lengths are 2.61 Å. Au1+ is bonded in a square co-planar geometry to four Br+0.50+ atoms. There are two shorter (2.47 Å) and two longer (2.60 Å) Au–Br bond lengths. O2- is bonded in a distorted bent 120 degrees geometry to one K1+ and one Br+0.50+ atom. The O–Br bond length is 1.74 Å. There are two inequivalent Br+0.50+ sites. In the first Br+0.50+ site, Br+0.50+ is bonded in a single-bond geometry to one Au1+ atom. In the second Br+0.50+ site, Br+0.50+ is bonded in a bent 120 degrees geometry to one Au1+ and one O2- atom.

36 MATERIALS SCIENCE↗
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Materials Data on KAu(Br2O)2 by Materials Project

KAu(OBr2)2 crystallizes in the monoclinic P2_1/c space group. The structure is two-dimensional and consists of two KAu(OBr2)2 sheets oriented in the (0, 1, 0) direction. K1+ is bonded in a distorted square co-planar geometry to four equivalent O2- atoms. There are two shorter (2.72 Å) and two longer (2.88 Å) K–O bond lengths. Au1+ is bonded in a square co-planar geometry to four Br+0.50+ atoms. There are two shorter (2.46 Å) and two longer (2.59 Å) Au–Br bond lengths. O2- is bonded in a trigonal non-coplanar geometry to two equivalent K1+ and one Br+0.50+ atom. The O–Br bond length is 1.74 Å. There are two inequivalent Br+0.50+ sites. In the first Br+0.50+ site, Br+0.50+ is bonded in a single-bond geometry to one Au1+ atom. In the second Br+0.50+ site, Br+0.50+ is bonded in a distorted water-like geometry to one Au1+ and one O2- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Er4OsBr4 by Materials Project

Er4OsBr4 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are two inequivalent Er sites. In the first Er site, Er is bonded to two equivalent Os and four Br atoms to form a mixture of distorted edge, face, and corner-sharing ErOs2Br4 pentagonal pyramids. There are one shorter (2.87 Å) and one longer (2.88 Å) Er–Os bond lengths. There are a spread of Er–Br bond distances ranging from 2.96–3.12 Å. In the second Er site, Er is bonded to two equivalent Os and four Br atoms to form a mixture of distorted edge, face, and corner-sharing ErOs2Br4 pentagonal pyramids. There are one shorter (2.87 Å) and one longer (2.88 Å) Er–Os bond lengths. There are a spread of Er–Br bond distances ranging from 2.95–3.09 Å. Os is bonded in a 8-coordinate geometry to eight Er atoms. There are two inequivalent Br sites. In the first Br site, Br is bonded in a 4-coordinate geometry to four Er atoms. In the second Br site, Br is bonded in a 4-coordinate geometry to four Er atoms.

36 MATERIALS SCIENCE↗
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Materials Data on BaBr2O by Materials Project

BaOBr2 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Ba is bonded in a 2-coordinate geometry to two equivalent O and four equivalent Br atoms. Both Ba–O bond lengths are 2.67 Å. There are one shorter (3.29 Å) and three longer (3.41 Å) Ba–Br bond lengths. O is bonded in a trigonal planar geometry to two equivalent Ba and one Br atom. The O–Br bond length is 1.83 Å. There are two inequivalent Br sites. In the first Br site, Br is bonded in a distorted single-bond geometry to one O atom. In the second Br site, Br is bonded to four equivalent Ba atoms to form a mixture of corner and edge-sharing BrBa4 tetrahedra.

36 MATERIALS SCIENCE↗