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Materials Data on EuNb8O14 by Materials Project

EuNb8O14 crystallizes in the orthorhombic Pbam space group. The structure is three-dimensional. Eu2+ is bonded to twelve O2- atoms to form EuO12 cuboctahedra that share corners with two equivalent EuO12 cuboctahedra, corners with four equivalent NbO5 square pyramids, edges with six NbO5 square pyramids, faces with four equivalent NbO6 octahedra, and faces with two equivalent NbO5 square pyramids. There are a spread of Eu–O bond distances ranging from 2.69–3.01 Å. There are three inequivalent Nb+3.25+ sites. In the first Nb+3.25+ site, Nb+3.25+ is bonded to six O2- atoms to form NbO6 octahedra that share a cornercorner with one NbO6 octahedra, corners with six NbO5 square pyramids, edges with two equivalent NbO5 square pyramids, and faces with two equivalent EuO12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. There are a spread of Nb–O bond distances ranging from 1.98–2.09 Å. In the second Nb+3.25+ site, Nb+3.25+ is bonded to five O2- atoms to form NbO5 square pyramids that share corners with four equivalent NbO6 octahedra, corners with six equivalent NbO5 square pyramids, an edgeedge with one EuO12 cuboctahedra, and a faceface with one EuO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 4–46°. There are a spread of Nb–O bond distances ranging from 2.10–2.21 Å. In the third Nb+3.25+ site, Nb+3.25+ is bonded to five O2- atoms to form NbO5 square pyramids that share a cornercorner with one EuO12 cuboctahedra, a cornercorner with one NbO6 octahedra, corners with six NbO5 square pyramids, an edgeedge with one EuO12 cuboctahedra, an edgeedge with one NbO6 octahedra, and an edgeedge with one NbO5 square pyramid. The corner-sharing octahedral tilt angles are 48°. There are a spread of Nb–O bond distances ranging from 2.06–2.19 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a linear geometry to two equivalent Eu2+ and two equivalent Nb+3.25+ atoms. In the second O2- site, O2- is bonded in a 3-coordinate geometry to three Nb+3.25+ atoms. In the third O2- site, O2- is bonded in a 4-coordinate geometry to one Eu2+ and three Nb+3.25+ atoms. In the fourth O2- site, O2- is bonded in a square co-planar geometry to four equivalent Nb+3.25+ atoms. In the fifth O2- site, O2- is bonded in a distorted T-shaped geometry to one Eu2+ and three Nb+3.25+ atoms. In the sixth O2- site, O2- is bonded in a 4-coordinate geometry to one Eu2+ and three Nb+3.25+ atoms.

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Materials Data on BaNb8O14 by Materials Project

BaNb8O14 crystallizes in the orthorhombic Pbam space group. The structure is three-dimensional. Ba2+ is bonded to twelve O2- atoms to form BaO12 cuboctahedra that share corners with two equivalent BaO12 cuboctahedra, corners with four equivalent NbO5 square pyramids, edges with six NbO5 square pyramids, faces with four equivalent NbO6 octahedra, and faces with two equivalent NbO5 square pyramids. There are a spread of Ba–O bond distances ranging from 2.83–3.01 Å. There are three inequivalent Nb+3.25+ sites. In the first Nb+3.25+ site, Nb+3.25+ is bonded to six O2- atoms to form NbO6 octahedra that share a cornercorner with one NbO6 octahedra, corners with six NbO5 square pyramids, edges with two equivalent NbO5 square pyramids, and faces with two equivalent BaO12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. There are a spread of Nb–O bond distances ranging from 1.97–2.09 Å. In the second Nb+3.25+ site, Nb+3.25+ is bonded to five O2- atoms to form NbO5 square pyramids that share corners with four equivalent NbO6 octahedra, corners with six equivalent NbO5 square pyramids, an edgeedge with one BaO12 cuboctahedra, and a faceface with one BaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 3–45°. There are a spread of Nb–O bond distances ranging from 2.11–2.21 Å. In the third Nb+3.25+ site, Nb+3.25+ is bonded to five O2- atoms to form NbO5 square pyramids that share a cornercorner with one BaO12 cuboctahedra, a cornercorner with one NbO6 octahedra, corners with six NbO5 square pyramids, an edgeedge with one BaO12 cuboctahedra, an edgeedge with one NbO6 octahedra, and an edgeedge with one NbO5 square pyramid. The corner-sharing octahedral tilt angles are 47°. There are a spread of Nb–O bond distances ranging from 2.05–2.19 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted linear geometry to two equivalent Ba2+ and two equivalent Nb+3.25+ atoms. In the second O2- site, O2- is bonded in a 3-coordinate geometry to three Nb+3.25+ atoms. In the third O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to one Ba2+ and three Nb+3.25+ atoms. In the fourth O2- site, O2- is bonded in a square co-planar geometry to four equivalent Nb+3.25+ atoms. In the fifth O2- site, O2- is bonded in a distorted T-shaped geometry to one Ba2+ and three Nb+3.25+ atoms. In the sixth O2- site, O2- is bonded in a 4-coordinate geometry to one Ba2+ and three Nb+3.25+ atoms.

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Materials Data on CuSeO3 by Materials Project

CuSeO3 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Cu2+ is bonded to six O2- atoms to form distorted corner-sharing CuO6 octahedra. The corner-sharing octahedra tilt angles range from 53–58°. There are a spread of Cu–O bond distances ranging from 1.93–2.65 Å. Se4+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There is two shorter (1.74 Å) and one longer (1.79 Å) Se–O bond length. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Cu2+ and one Se4+ atom. In the second O2- site, O2- is bonded in a trigonal planar geometry to two equivalent Cu2+ and one Se4+ atom.

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Materials Data on InPO4 by Materials Project

InPO4 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. In3+ is bonded to six O2- atoms to form InO6 octahedra that share corners with six equivalent PO4 tetrahedra and edges with two equivalent InO6 octahedra. There are a spread of In–O bond distances ranging from 2.08–2.32 Å. P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with six equivalent InO6 octahedra. The corner-sharing octahedra tilt angles range from 46–55°. There are a spread of P–O bond distances ranging from 1.53–1.58 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to one In3+ and one P5+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent In3+ and one P5+ atom. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent In3+ and one P5+ atom.

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Materials Data on Sr2Nb5O9 by Materials Project

Sr2Nb5O9 crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Sr2+ is bonded to twelve O2- atoms to form SrO12 cuboctahedra that share corners with eight equivalent SrO12 cuboctahedra, faces with five equivalent SrO12 cuboctahedra, faces with four equivalent NbO6 octahedra, and faces with four equivalent NbO5 square pyramids. There are a spread of Sr–O bond distances ranging from 2.81–2.97 Å. There are three inequivalent Nb+2.80+ sites. In the first Nb+2.80+ site, Nb+2.80+ is bonded to five O2- atoms to form NbO5 square pyramids that share a cornercorner with one NbO6 octahedra, corners with four equivalent NbO5 square pyramids, and faces with four equivalent SrO12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Nb–O bond lengths are 2.11 Å. In the second Nb+2.80+ site, Nb+2.80+ is bonded in a square co-planar geometry to four O2- atoms. There are two shorter (2.10 Å) and two longer (2.16 Å) Nb–O bond lengths. In the third Nb+2.80+ site, Nb+2.80+ is bonded to six O2- atoms to form NbO6 octahedra that share corners with four equivalent NbO6 octahedra, corners with two equivalent NbO5 square pyramids, and faces with eight equivalent SrO12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (1.97 Å) and four longer (2.10 Å) Nb–O bond lengths. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a square co-planar geometry to four equivalent Nb+2.80+ atoms. In the second O2- site, O2- is bonded to two equivalent Sr2+ and three Nb+2.80+ atoms to form a mixture of distorted edge and corner-sharing OSr2Nb3 trigonal bipyramids. In the third O2- site, O2- is bonded in a distorted linear geometry to four equivalent Sr2+ and two Nb+2.80+ atoms. In the fourth O2- site, O2- is bonded in a distorted linear geometry to four equivalent Sr2+ and two equivalent Nb+2.80+ atoms.

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Materials Data on KNb8O14 by Materials Project

KNb8O14 crystallizes in the orthorhombic Pbam space group. The structure is three-dimensional. K1+ is bonded to twelve O2- atoms to form KO12 cuboctahedra that share corners with two equivalent KO12 cuboctahedra, corners with four equivalent NbO5 square pyramids, edges with six NbO5 square pyramids, faces with four equivalent NbO6 octahedra, and faces with two equivalent NbO5 square pyramids. There are a spread of K–O bond distances ranging from 2.85–2.99 Å. There are three inequivalent Nb+3.38+ sites. In the first Nb+3.38+ site, Nb+3.38+ is bonded to five O2- atoms to form NbO5 square pyramids that share corners with four equivalent NbO6 octahedra, corners with six equivalent NbO5 square pyramids, an edgeedge with one KO12 cuboctahedra, and a faceface with one KO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 4–43°. There are a spread of Nb–O bond distances ranging from 2.11–2.19 Å. In the second Nb+3.38+ site, Nb+3.38+ is bonded to six O2- atoms to form NbO6 octahedra that share a cornercorner with one NbO6 octahedra, corners with six NbO5 square pyramids, edges with two equivalent NbO5 square pyramids, and faces with two equivalent KO12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. There are a spread of Nb–O bond distances ranging from 2.00–2.09 Å. In the third Nb+3.38+ site, Nb+3.38+ is bonded to five O2- atoms to form NbO5 square pyramids that share a cornercorner with one KO12 cuboctahedra, a cornercorner with one NbO6 octahedra, corners with six NbO5 square pyramids, an edgeedge with one KO12 cuboctahedra, an edgeedge with one NbO6 octahedra, and an edgeedge with one NbO5 square pyramid. The corner-sharing octahedral tilt angles are 47°. There are a spread of Nb–O bond distances ranging from 2.03–2.16 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to three Nb+3.38+ atoms. In the second O2- site, O2- is bonded in a square co-planar geometry to four equivalent Nb+3.38+ atoms. In the third O2- site, O2- is bonded in a distorted T-shaped geometry to one K1+ and three Nb+3.38+ atoms. In the fourth O2- site, O2- is bonded in a distorted linear geometry to two equivalent K1+ and two equivalent Nb+3.38+ atoms. In the fifth O2- site, O2- is bonded in a 4-coordinate geometry to one K1+ and three Nb+3.38+ atoms. In the sixth O2- site, O2- is bonded in a 4-coordinate geometry to one K1+ and three Nb+3.38+ atoms.

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Materials Data on ZnCl2 by Materials Project

ZnCl2 crystallizes in the orthorhombic Pna2_1 space group. The structure is three-dimensional. Zn2+ is bonded to four Cl1- atoms to form corner-sharing ZnCl4 tetrahedra. There are three shorter (2.30 Å) and one longer (2.31 Å) Zn–Cl bond lengths. There are two inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a bent 120 degrees geometry to two equivalent Zn2+ atoms. In the second Cl1- site, Cl1- is bonded in a bent 120 degrees geometry to two equivalent Zn2+ atoms.

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Materials Data on Li2FeBr4 by Materials Project

Li2FeBr4 crystallizes in the orthorhombic Cmmm space group. The structure is three-dimensional. Li1+ is bonded to six Br1- atoms to form LiBr6 octahedra that share corners with six equivalent LiBr6 octahedra, edges with four equivalent LiBr6 octahedra, and edges with four equivalent FeBr6 octahedra. The corner-sharing octahedral tilt angles are 5°. There are four shorter (2.74 Å) and two longer (2.75 Å) Li–Br bond lengths. Fe2+ is bonded to six Br1- atoms to form FeBr6 octahedra that share edges with two equivalent FeBr6 octahedra and edges with eight equivalent LiBr6 octahedra. There are two shorter (2.64 Å) and four longer (2.65 Å) Fe–Br bond lengths. There are two inequivalent Br1- sites. In the first Br1- site, Br1- is bonded to four equivalent Li1+ and one Fe2+ atom to form a mixture of edge and corner-sharing BrLi4Fe square pyramids. In the second Br1- site, Br1- is bonded in a rectangular see-saw-like geometry to two equivalent Li1+ and two equivalent Fe2+ atoms.

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Materials Data on Li2CoCl4 by Materials Project

Li2CoCl4 crystallizes in the orthorhombic Cmmm space group. The structure is three-dimensional. Li1+ is bonded to six Cl1- atoms to form LiCl6 octahedra that share corners with six equivalent LiCl6 octahedra, edges with four equivalent LiCl6 octahedra, and edges with four equivalent CoCl6 octahedra. The corner-sharing octahedra tilt angles range from 6–7°. There are four shorter (2.57 Å) and two longer (2.58 Å) Li–Cl bond lengths. Co2+ is bonded to six Cl1- atoms to form CoCl6 octahedra that share edges with two equivalent CoCl6 octahedra and edges with eight equivalent LiCl6 octahedra. There are two shorter (2.44 Å) and four longer (2.46 Å) Co–Cl bond lengths. There are two inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a rectangular see-saw-like geometry to two equivalent Li1+ and two equivalent Co2+ atoms. In the second Cl1- site, Cl1- is bonded to four equivalent Li1+ and one Co2+ atom to form a mixture of edge and corner-sharing ClLi4Co square pyramids.

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Materials Data on Nb2Bi2PbO9 by Materials Project

PbBi2Nb2O9 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Nb5+ is bonded to six O2- atoms to form NbO6 octahedra that share corners with five equivalent NbO6 octahedra and faces with four equivalent PbO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–11°. There are a spread of Nb–O bond distances ranging from 1.90–2.20 Å. Pb2+ is bonded to twelve O2- atoms to form PbO12 cuboctahedra that share corners with four equivalent PbO12 cuboctahedra, faces with four equivalent PbO12 cuboctahedra, and faces with eight equivalent NbO6 octahedra. There are four shorter (2.80 Å) and eight longer (2.82 Å) Pb–O bond lengths. Bi3+ is bonded in a 4-coordinate geometry to eight O2- atoms. There are four shorter (2.33 Å) and four longer (2.96 Å) Bi–O bond lengths. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted linear geometry to two equivalent Nb5+ and two equivalent Pb2+ atoms. In the second O2- site, O2- is bonded to four equivalent Bi3+ atoms to form a mixture of edge and corner-sharing OBi4 tetrahedra. In the third O2- site, O2- is bonded in a distorted linear geometry to two equivalent Nb5+ and four equivalent Pb2+ atoms. In the fourth O2- site, O2- is bonded in a single-bond geometry to one Nb5+ and four equivalent Bi3+ atoms.

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Materials Data on Cu2HgI4 by Materials Project

Cu2HgI4 crystallizes in the monoclinic Cm space group. The structure is three-dimensional. Cu1+ is bonded to four I1- atoms to form CuI4 tetrahedra that share corners with four equivalent CuI4 tetrahedra and corners with four equivalent HgI4 tetrahedra. There are one shorter (2.63 Å) and three longer (2.64 Å) Cu–I bond lengths. Hg2+ is bonded to four I1- atoms to form HgI4 tetrahedra that share corners with eight equivalent CuI4 tetrahedra. There are one shorter (2.88 Å) and three longer (2.89 Å) Hg–I bond lengths. There are three inequivalent I1- sites. In the first I1- site, I1- is bonded in a trigonal non-coplanar geometry to two equivalent Cu1+ and one Hg2+ atom. In the second I1- site, I1- is bonded in a trigonal non-coplanar geometry to two equivalent Cu1+ and one Hg2+ atom. In the third I1- site, I1- is bonded in a trigonal non-coplanar geometry to two equivalent Cu1+ and one Hg2+ atom.

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Materials Data on CuW3Br7 by Materials Project

W3CuBr7 crystallizes in the cubic Pn-3 space group. The structure is three-dimensional. W2+ is bonded to five Br1- atoms to form edge-sharing WBr5 square pyramids. There are a spread of W–Br bond distances ranging from 2.64–2.66 Å. Cu1+ is bonded in a trigonal planar geometry to three equivalent Br1- atoms. All Cu–Br bond lengths are 2.40 Å. There are three inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 12-coordinate geometry to three equivalent W2+ atoms. In the second Br1- site, Br1- is bonded in a 12-coordinate geometry to three equivalent W2+ atoms. In the third Br1- site, Br1- is bonded in a bent 120 degrees geometry to one W2+ and one Cu1+ atom.

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Materials Data on GeBi2O5 by Materials Project

Bi2GeO5 crystallizes in the orthorhombic Cmc2_1 space group. The structure is three-dimensional. Ge4+ is bonded to four O2- atoms to form corner-sharing GeO4 tetrahedra. There are a spread of Ge–O bond distances ranging from 1.75–1.83 Å. Bi3+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Bi–O bond distances ranging from 2.20–2.57 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded to four equivalent Bi3+ atoms to form a mixture of distorted edge and corner-sharing OBi4 tetrahedra. In the second O2- site, O2- is bonded in a 1-coordinate geometry to one Ge4+ and two equivalent Bi3+ atoms. In the third O2- site, O2- is bonded in a bent 150 degrees geometry to two equivalent Ge4+ atoms.

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Materials Data on CsAuCl3 by Materials Project

CsAuCl3 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Cs1+ is bonded to twelve Cl1- atoms to form CsCl12 cuboctahedra that share corners with twelve equivalent CsCl12 cuboctahedra, faces with six equivalent CsCl12 cuboctahedra, and faces with four equivalent AuCl6 octahedra. There are four shorter (3.83 Å) and eight longer (3.92 Å) Cs–Cl bond lengths. There are two inequivalent Au2+ sites. In the first Au2+ site, Au2+ is bonded to six Cl1- atoms to form AuCl6 octahedra that share faces with eight equivalent CsCl12 cuboctahedra. There are two shorter (2.32 Å) and four longer (3.01 Å) Au–Cl bond lengths. In the second Au2+ site, Au2+ is bonded in a distorted square co-planar geometry to four equivalent Cl1- atoms. All Au–Cl bond lengths are 2.36 Å. There are two inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a distorted single-bond geometry to four equivalent Cs1+ and one Au2+ atom. In the second Cl1- site, Cl1- is bonded in a 6-coordinate geometry to four equivalent Cs1+ and two Au2+ atoms.

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Materials Data on GeBi2O5 by Materials Project

Bi2GeO5 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Ge4+ is bonded to five O2- atoms to form distorted corner-sharing GeO5 trigonal bipyramids. There are a spread of Ge–O bond distances ranging from 1.75–2.03 Å. There are two inequivalent Bi3+ sites. In the first Bi3+ site, Bi3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Bi–O bond distances ranging from 2.27–2.76 Å. In the second Bi3+ site, Bi3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Bi–O bond distances ranging from 2.19–2.88 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Ge4+ and two Bi3+ atoms. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one Ge4+ and two equivalent Bi3+ atoms. In the third O2- site, O2- is bonded in a 4-coordinate geometry to one Ge4+ and three Bi3+ atoms. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to one Ge4+ and three Bi3+ atoms. In the fifth O2- site, O2- is bonded to four Bi3+ atoms to form a mixture of distorted corner and edge-sharing OBi4 tetrahedra.

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Materials Data on BaTa2Bi2O9 by Materials Project

BaBi2Ta2O9 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ba2+ is bonded to twelve O2- atoms to form BaO12 cuboctahedra that share corners with four equivalent BaO12 cuboctahedra, faces with four equivalent BaO12 cuboctahedra, and faces with eight equivalent TaO6 octahedra. There are four shorter (2.81 Å) and eight longer (2.85 Å) Ba–O bond lengths. Ta5+ is bonded to six O2- atoms to form TaO6 octahedra that share corners with five equivalent TaO6 octahedra and faces with four equivalent BaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–10°. There are a spread of Ta–O bond distances ranging from 1.89–2.22 Å. Bi3+ is bonded in a 4-coordinate geometry to eight O2- atoms. There are four shorter (2.33 Å) and four longer (2.97 Å) Bi–O bond lengths. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted linear geometry to two equivalent Ba2+ and two equivalent Ta5+ atoms. In the second O2- site, O2- is bonded to four equivalent Bi3+ atoms to form a mixture of edge and corner-sharing OBi4 tetrahedra. In the third O2- site, O2- is bonded to four equivalent Ba2+ and two equivalent Ta5+ atoms to form a mixture of distorted edge and corner-sharing OBa4Ta2 octahedra. The corner-sharing octahedral tilt angles are 0°. In the fourth O2- site, O2- is bonded in a single-bond geometry to one Ta5+ and four equivalent Bi3+ atoms.

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Materials Data on BeAlH5 by Materials Project

BeAlH5 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Be2+ is bonded to four H1- atoms to form BeH4 tetrahedra that share corners with four equivalent AlH6 octahedra. The corner-sharing octahedra tilt angles range from 41–52°. All Be–H bond lengths are 1.43 Å. Al3+ is bonded to six H1- atoms to form AlH6 octahedra that share corners with two equivalent AlH6 octahedra and corners with four equivalent BeH4 tetrahedra. The corner-sharing octahedral tilt angles are 45°. There are a spread of Al–H bond distances ranging from 1.71–1.73 Å. There are three inequivalent H1- sites. In the first H1- site, H1- is bonded in a bent 150 degrees geometry to one Be2+ and one Al3+ atom. In the second H1- site, H1- is bonded in a distorted bent 150 degrees geometry to two equivalent Al3+ atoms. In the third H1- site, H1- is bonded in a bent 120 degrees geometry to one Be2+ and one Al3+ atom.

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Materials Data on MgH2SeO5 by Materials Project

MgH2SeO5 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with two equivalent MgO6 octahedra and corners with four equivalent SeO4 tetrahedra. The corner-sharing octahedral tilt angles are 56°. There are a spread of Mg–O bond distances ranging from 2.04–2.23 Å. H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. Se6+ is bonded to four O2- atoms to form SeO4 tetrahedra that share corners with four equivalent MgO6 octahedra. The corner-sharing octahedra tilt angles range from 44–53°. There is two shorter (1.66 Å) and two longer (1.68 Å) Se–O bond length. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Mg2+ and one Se6+ atom. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Mg2+ and one Se6+ atom. In the third O2- site, O2- is bonded in a distorted water-like geometry to two equivalent Mg2+ and two equivalent H1+ atoms.

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