cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17188/1192406
title: Materials Data on Gd3RuO7 by Materials Project

description: Gd3RuO7 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. there are two inequivalent Gd3+ sites. In the first Gd3+ site, Gd3+ is bonded to seven O2- atoms to form distorted GdO7 pentagonal bipyramids that share corners with two equivalent RuO6 octahedra, corners with three equivalent GdO7 pentagonal bipyramids, edges with two equivalent RuO6 octahedra, and edges with two equivalent GdO7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 37°. There are a spread of Gd–O bond distances ranging from 2.24–2.54 Å. In the second Gd3+ site, Gd3+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are four shorter (2.35 Å) and four longer (2.68 Å) Gd–O bond lengths. Ru5+ is bonded to six O2- atoms to form RuO6 octahedra that share corners with two equivalent RuO6 octahedra, corners with four equivalent GdO7 pentagonal bipyramids, and edges with four equivalent GdO7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 38°. There is four shorter (1.97 Å) and two longer (1.98 Å) Ru–O bond length. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Gd3+ and two equivalent Ru5+ atoms. In the second O2- site, O2- is bonded to four Gd3+ atoms to form a mixture of edge and corner-sharing OGd4 tetrahedra. In the third O2- site, O2- is bonded in a 4-coordinate geometry to three Gd3+ and one Ru5+ atom.
DOI: 10.17188/1192407
title: Materials Data on Er2Fe17 by Materials Project

description: Er2Fe17 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. there are two inequivalent Er sites. In the first Er site, Er is bonded in a 12-coordinate geometry to eighteen Fe atoms. There are a spread of Er–Fe bond distances ranging from 2.98–3.28 Å. In the second Er site, Er is bonded in a 8-coordinate geometry to twenty Fe atoms. There are a spread of Er–Fe bond distances ranging from 2.90–3.20 Å. There are four inequivalent Fe sites. In the first Fe site, Fe is bonded in a 2-coordinate geometry to one Er and thirteen Fe atoms. There are a spread of Fe–Fe bond distances ranging from 2.37–2.79 Å. In the second Fe site, Fe is bonded to two equivalent Er and ten Fe atoms to form FeEr2Fe10 cuboctahedra that share corners with fourteen FeEr2Fe10 cuboctahedra, edges with six equivalent FeEr3Fe9 cuboctahedra, and faces with ten FeEr2Fe10 cuboctahedra. There are four shorter (2.43 Å) and four longer (2.47 Å) Fe–Fe bond lengths. In the third Fe site, Fe is bonded in a 12-coordinate geometry to two Er and ten Fe atoms. There are a spread of Fe–Fe bond distances ranging from 2.48–2.58 Å. In the fourth Fe site, Fe is bonded to three Er and nine Fe atoms to form a mixture of distorted face, edge, and corner-sharing FeEr3Fe9 cuboctahedra. Both Fe–Fe bond lengths are 2.46 Å.
DOI: 10.17188/1192408
title: Materials Data on RbNa3Li12(SiO4)4 by Materials Project

description: RbNa3Li12(SiO4)4 crystallizes in the tetragonal I4/m space group. The structure is three-dimensional. Rb1+ is bonded in a body-centered cubic geometry to eight equivalent O2- atoms. All Rb–O bond lengths are 2.97 Å. There are two inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a distorted body-centered cubic geometry to eight O2- atoms. There are four shorter (2.48 Å) and four longer (2.77 Å) Na–O bond lengths. In the second Na1+ site, Na1+ is bonded in a body-centered cubic geometry to eight equivalent O2- atoms. All Na–O bond lengths are 2.73 Å. There are two inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with four equivalent LiO4 tetrahedra, corners with four equivalent SiO4 tetrahedra, and edges with two equivalent LiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.92–2.07 Å. In the second Li1+ site, Li1+ is bonded to four O2- atoms to form distorted LiO4 tetrahedra that share corners with two equivalent SiO4 tetrahedra, corners with six LiO4 tetrahedra, an edgeedge with one LiO4 tetrahedra, and an edgeedge with one SiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.93–2.15 Å. Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with eight LiO4 tetrahedra and edges with two equivalent LiO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.65–1.67 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to one Rb1+, one Na1+, three Li1+, and one Si4+ atom. In the second O2- site, O2- is bonded to two equivalent Na1+, three Li1+, and one Si4+ atom to form a mixture of distorted edge and corner-sharing ONa2Li3Si octahedra. The corner-sharing octahedral tilt angles are 66°. In the third O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Na1+, three Li1+, and one Si4+ atom.
DOI: 10.17188/1192409
title: Materials Data on Rb2LiFe(CN)6 by Materials Project

description: Rb2Li(CN)6Fe crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional and consists of two iron molecules and one Rb2Li(CN)6 framework. In the Rb2Li(CN)6 framework, Rb1+ is bonded in a 3-coordinate geometry to six N3- atoms. There are a spread of Rb–N bond distances ranging from 3.12–3.48 Å. Li1+ is bonded in an octahedral geometry to six N3- atoms. There are a spread of Li–N bond distances ranging from 2.24–2.33 Å. There are three inequivalent C2+ sites. In the first C2+ site, C2+ is bonded in a single-bond geometry to one N3- atom. The C–N bond length is 1.18 Å. In the second C2+ site, C2+ is bonded in a single-bond geometry to one N3- atom. The C–N bond length is 1.18 Å. In the third C2+ site, C2+ is bonded in a single-bond geometry to one N3- atom. The C–N bond length is 1.18 Å. There are three inequivalent N3- sites. In the first N3- site, N3- is bonded in a distorted bent 150 degrees geometry to two equivalent Rb1+, one Li1+, and one C2+ atom. In the second N3- site, N3- is bonded in a 2-coordinate geometry to two equivalent Rb1+, one Li1+, and one C2+ atom. In the third N3- site, N3- is bonded in a distorted bent 150 degrees geometry to two equivalent Rb1+, one Li1+, and one C2+ atom.
DOI: 10.17188/1192410
title: Materials Data on Nb2(PO4)3 by Materials Project

description: Nb2P3O12 crystallizes in the trigonal R-3c space group. The structure is three-dimensional. Nb+4.50+ is bonded to six O2- atoms to form NbO6 octahedra that share corners with six equivalent PO4 tetrahedra. There are three shorter (2.01 Å) and three longer (2.03 Å) Nb–O bond lengths. P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four equivalent NbO6 octahedra. The corner-sharing octahedra tilt angles range from 24–26°. All P–O bond lengths are 1.54 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 150 degrees geometry to one Nb+4.50+ and one P5+ atom. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to one Nb+4.50+ and one P5+ atom.
DOI: 10.17188/1192411
title: Materials Data on Pr3CuSnSe7 by Materials Project

description: Pr3CuSnSe7 crystallizes in the hexagonal P6_3 space group. The structure is three-dimensional. Pr3+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are a spread of Pr–Se bond distances ranging from 2.96–3.51 Å. Cu1+ is bonded in a trigonal planar geometry to three equivalent Se2- atoms. All Cu–Se bond lengths are 2.40 Å. Sn4+ is bonded in a tetrahedral geometry to four Se2- atoms. There are one shorter (2.52 Å) and three longer (2.57 Å) Sn–Se bond lengths. There are three inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a distorted rectangular see-saw-like geometry to three equivalent Pr3+ and one Sn4+ atom. In the second Se2- site, Se2- is bonded in a tetrahedral geometry to three equivalent Pr3+ and one Sn4+ atom. In the third Se2- site, Se2- is bonded in a 5-coordinate geometry to four equivalent Pr3+ and one Cu1+ atom.
DOI: 10.17188/1192412
title: Materials Data on Ba2ZnGe2S6O by Materials Project

description: Ba2ZnGe2S6O crystallizes in the tetragonal P-42_1m space group. The structure is three-dimensional. Ba2+ is bonded in a 8-coordinate geometry to seven S2- and one O2- atom. There are a spread of Ba–S bond distances ranging from 3.22–3.26 Å. The Ba–O bond length is 3.07 Å. Zn2+ is bonded to four equivalent S2- atoms to form ZnS4 tetrahedra that share corners with four equivalent GeS3O tetrahedra. All Zn–S bond lengths are 2.37 Å. Ge4+ is bonded to three S2- and one O2- atom to form distorted GeS3O tetrahedra that share a cornercorner with one GeS3O tetrahedra and corners with two equivalent ZnS4 tetrahedra. There are one shorter (2.17 Å) and two longer (2.25 Å) Ge–S bond lengths. The Ge–O bond length is 1.87 Å. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a 4-coordinate geometry to two equivalent Ba2+, one Zn2+, and one Ge4+ atom. In the second S2- site, S2- is bonded to three equivalent Ba2+ and one Ge4+ atom to form a mixture of distorted edge and corner-sharing SBa3Ge tetrahedra. O2- is bonded in a 4-coordinate geometry to two equivalent Ba2+ and two equivalent Ge4+ atoms.
DOI: 10.17188/1192413
title: Materials Data on Na3TaF8 by Materials Project

description: Na3TaF8 is Esseneite-derived structured and crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are two inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a 8-coordinate geometry to eight F1- atoms. There are a spread of Na–F bond distances ranging from 2.31–2.67 Å. In the second Na1+ site, Na1+ is bonded in a distorted octahedral geometry to six F1- atoms. There are a spread of Na–F bond distances ranging from 2.27–2.48 Å. Ta5+ is bonded in a 8-coordinate geometry to eight F1- atoms. There are a spread of Ta–F bond distances ranging from 2.01–2.07 Å. There are four inequivalent F1- sites. In the first F1- site, F1- is bonded to three Na1+ and one Ta5+ atom to form a mixture of distorted edge and corner-sharing FNa3Ta tetrahedra. In the second F1- site, F1- is bonded in a 2-coordinate geometry to two equivalent Na1+ and one Ta5+ atom. In the third F1- site, F1- is bonded in a 4-coordinate geometry to three Na1+ and one Ta5+ atom. In the fourth F1- site, F1- is bonded to three Na1+ and one Ta5+ atom to form a mixture of distorted edge and corner-sharing FNa3Ta tetrahedra.
DOI: 10.17188/1192414
title: Materials Data on CaZn2 by Materials Project

description: CaZn2 crystallizes in the orthorhombic Imma space group. The structure is three-dimensional. Ca is bonded in a 12-coordinate geometry to twelve equivalent Zn atoms. There are a spread of Ca–Zn bond distances ranging from 3.14–3.36 Å. Zn is bonded in a 10-coordinate geometry to six equivalent Ca and four equivalent Zn atoms. There are a spread of Zn–Zn bond distances ranging from 2.64–2.78 Å.
DOI: 10.17188/1192415
title: Materials Data on K3SbO3 by Materials Project

description: K3SbO3 crystallizes in the cubic P2_13 space group. The structure is three-dimensional. there are three inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a distorted T-shaped geometry to three equivalent O2- atoms. All K–O bond lengths are 2.64 Å. In the second K1+ site, K1+ is bonded in a 6-coordinate geometry to six equivalent O2- atoms. There are three shorter (2.79 Å) and three longer (3.02 Å) K–O bond lengths. In the third K1+ site, K1+ is bonded in a 6-coordinate geometry to six equivalent O2- atoms. There are three shorter (2.81 Å) and three longer (2.99 Å) K–O bond lengths. Sb3+ is bonded in a distorted trigonal non-coplanar geometry to three equivalent O2- atoms. All Sb–O bond lengths are 1.97 Å. O2- is bonded in a 6-coordinate geometry to five K1+ and one Sb3+ atom.
DOI: 10.17188/1192416
title: Materials Data on BaCu2GeSe4 by Materials Project

description: BaCu2GeSe4 crystallizes in the trigonal P3_1 space group. The structure is three-dimensional. Ba2+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are a spread of Ba–Se bond distances ranging from 3.35–3.42 Å. There are two inequivalent Cu1+ sites. In the first Cu1+ site, Cu1+ is bonded to four Se2- atoms to form CuSe4 tetrahedra that share corners with four equivalent CuSe4 tetrahedra and corners with four equivalent GeSe4 tetrahedra. There are a spread of Cu–Se bond distances ranging from 2.45–2.52 Å. In the second Cu1+ site, Cu1+ is bonded to four Se2- atoms to form CuSe4 tetrahedra that share corners with four equivalent CuSe4 tetrahedra and corners with four equivalent GeSe4 tetrahedra. There are a spread of Cu–Se bond distances ranging from 2.45–2.52 Å. Ge4+ is bonded to four Se2- atoms to form GeSe4 tetrahedra that share corners with eight CuSe4 tetrahedra. There are three shorter (2.42 Å) and one longer (2.43 Å) Ge–Se bond lengths. There are four inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 5-coordinate geometry to two equivalent Ba2+, two Cu1+, and one Ge4+ atom. In the second Se2- site, Se2- is bonded to two equivalent Ba2+, two Cu1+, and one Ge4+ atom to form a mixture of distorted corner and edge-sharing SeBa2Cu2Ge trigonal bipyramids. In the third Se2- site, Se2- is bonded to two equivalent Ba2+, two Cu1+, and one Ge4+ atom to form a mixture of distorted corner and edge-sharing SeBa2Cu2Ge trigonal bipyramids. In the fourth Se2- site, Se2- is bonded in a 5-coordinate geometry to two equivalent Ba2+, two Cu1+, and one Ge4+ atom.
DOI: 10.17188/1192417
title: Materials Data on TlGaSe2 by Materials Project

description: TlGaSe2 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are two inequivalent Tl1+ sites. In the first Tl1+ site, Tl1+ is bonded in a 7-coordinate geometry to seven Se2- atoms. There are a spread of Tl–Se bond distances ranging from 3.28–3.69 Å. In the second Tl1+ site, Tl1+ is bonded in a 7-coordinate geometry to seven Se2- atoms. There are a spread of Tl–Se bond distances ranging from 3.30–3.79 Å. There are two inequivalent Ga3+ sites. In the first Ga3+ site, Ga3+ is bonded to four Se2- atoms to form corner-sharing GaSe4 tetrahedra. There are three shorter (2.45 Å) and one longer (2.46 Å) Ga–Se bond lengths. In the second Ga3+ site, Ga3+ is bonded to four Se2- atoms to form corner-sharing GaSe4 tetrahedra. There are a spread of Ga–Se bond distances ranging from 2.43–2.46 Å. There are five inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 2-coordinate geometry to four Tl1+ and two Ga3+ atoms. In the second Se2- site, Se2- is bonded in a 5-coordinate geometry to three Tl1+ and two Ga3+ atoms. In the third Se2- site, Se2- is bonded in a 2-coordinate geometry to four Tl1+ and two equivalent Ga3+ atoms. In the fourth Se2- site, Se2- is bonded in a 2-coordinate geometry to four Tl1+ and two equivalent Ga3+ atoms. In the fifth Se2- site, Se2- is bonded in a 5-coordinate geometry to three Tl1+ and two Ga3+ atoms.
DOI: 10.17188/1192418
title: Materials Data on Rb2Hf3OF12 by Materials Project

description: Rb2Hf3OF12 crystallizes in the trigonal R-3m space group. The structure is three-dimensional. there are three inequivalent Rb1+ sites. In the first Rb1+ site, Rb1+ is bonded to twelve F1- atoms to form face-sharing RbF12 cuboctahedra. There are six shorter (2.74 Å) and six longer (3.13 Å) Rb–F bond lengths. In the second Rb1+ site, Rb1+ is bonded to six equivalent F1- atoms to form distorted corner-sharing RbF6 cuboctahedra. The corner-sharing octahedral tilt angles are 74°. All Rb–F bond lengths are 2.82 Å. In the third Rb1+ site, Rb1+ is bonded to six F1- atoms to form distorted RbF6 octahedra that share corners with three equivalent RbF6 cuboctahedra and a faceface with one RbF12 cuboctahedra. There are three shorter (2.87 Å) and three longer (2.96 Å) Rb–F bond lengths. Hf4+ is bonded in a 8-coordinate geometry to one O2- and seven F1- atoms. The Hf–O bond length is 2.07 Å. There are a spread of Hf–F bond distances ranging from 1.99–2.20 Å. O2- is bonded in a distorted trigonal planar geometry to three equivalent Hf4+ atoms. There are four inequivalent F1- sites. In the first F1- site, F1- is bonded in a bent 150 degrees geometry to two equivalent Hf4+ atoms. In the second F1- site, F1- is bonded in a 2-coordinate geometry to two Rb1+ and two equivalent Hf4+ atoms. In the third F1- site, F1- is bonded in a distorted trigonal planar geometry to one Rb1+ and two equivalent Hf4+ atoms. In the fourth F1- site, F1- is bonded in a distorted single-bond geometry to two Rb1+ and one Hf4+ atom.
DOI: 10.17188/1192419
title: Materials Data on KO3 by Materials Project

description: KO3 crystallizes in the tetragonal I4/mcm space group. The structure is three-dimensional. there are eight inequivalent K sites. In the first K site, K is bonded in a distorted body-centered cubic geometry to eight equivalent O atoms. All K–O bond lengths are 2.91 Å. In the second K site, K is bonded in a distorted body-centered cubic geometry to eight equivalent O atoms. All K–O bond lengths are 2.91 Å. In the third K site, K is bonded in a distorted body-centered cubic geometry to eight equivalent O atoms. All K–O bond lengths are 2.92 Å. In the fourth K site, K is bonded in a distorted body-centered cubic geometry to eight equivalent O atoms. All K–O bond lengths are 2.92 Å. In the fifth K site, K is bonded in a distorted body-centered cubic geometry to eight equivalent O atoms. All K–O bond lengths are 2.91 Å. In the sixth K site, K is bonded in a distorted body-centered cubic geometry to eight equivalent O atoms. All K–O bond lengths are 2.91 Å. In the seventh K site, K is bonded in a distorted body-centered cubic geometry to eight equivalent O atoms. All K–O bond lengths are 2.92 Å. In the eighth K site, K is bonded in a distorted body-centered cubic geometry to eight equivalent O atoms. All K–O bond lengths are 2.92 Å. There are nine inequivalent O sites. In the first O site, O is bonded to four K and one O atom to form a mixture of distorted face, edge, and corner-sharing OK4O square pyramids. The O–O bond length is 1.37 Å. In the second O site, O is bonded in a bent 120 degrees geometry to two equivalent O atoms. Both O–O bond lengths are 1.37 Å. In the third O site, O is bonded in a bent 120 degrees geometry to two equivalent O atoms. Both O–O bond lengths are 1.37 Å. In the fourth O site, O is bonded in a bent 120 degrees geometry to two equivalent O atoms. Both O–O bond lengths are 1.37 Å. In the fifth O site, O is bonded in a bent 120 degrees geometry to two equivalent O atoms. In the sixth O site, O is bonded in a bent 120 degrees geometry to two equivalent O atoms. Both O–O bond lengths are 1.37 Å. In the seventh O site, O is bonded in a bent 120 degrees geometry to two equivalent O atoms. Both O–O bond lengths are 1.37 Å. In the eighth O site, O is bonded in a bent 120 degrees geometry to two equivalent O atoms. Both O–O bond lengths are 1.37 Å. In the ninth O site, O is bonded in a bent 120 degrees geometry to two equivalent O atoms. Both O–O bond lengths are 1.37 Å.
DOI: 10.17188/1192420
title: Materials Data on Zn3SiNi2 by Materials Project

description: Ni2SiZn3 crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Ni is bonded in a 12-coordinate geometry to three equivalent Ni, six equivalent Zn, and three equivalent Si atoms. All Ni–Ni bond lengths are 2.59 Å. There are three shorter (2.50 Å) and three longer (2.76 Å) Ni–Zn bond lengths. All Ni–Si bond lengths are 2.33 Å. Zn is bonded in a 2-coordinate geometry to four equivalent Ni, eight equivalent Zn, and two equivalent Si atoms. There are four shorter (2.83 Å) and four longer (2.84 Å) Zn–Zn bond lengths. Both Zn–Si bond lengths are 2.76 Å. Si is bonded to six equivalent Ni and six equivalent Zn atoms to form face-sharing SiZn6Ni6 cuboctahedra.
DOI: 10.17188/1192421
title: Materials Data on BaCu2(AsO4)2 by Materials Project

description: BaCu2(AsO4)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Ba2+ is bonded to eight O2- atoms to form distorted BaO8 hexagonal bipyramids that share corners with four equivalent AsO4 tetrahedra, corners with four equivalent CuO5 trigonal bipyramids, edges with two equivalent BaO8 hexagonal bipyramids, edges with two equivalent AsO4 tetrahedra, and edges with two equivalent CuO5 trigonal bipyramids. There are a spread of Ba–O bond distances ranging from 2.78–2.98 Å. Cu2+ is bonded to five O2- atoms to form CuO5 trigonal bipyramids that share corners with two equivalent BaO8 hexagonal bipyramids, corners with five equivalent AsO4 tetrahedra, an edgeedge with one BaO8 hexagonal bipyramid, and an edgeedge with one CuO5 trigonal bipyramid. There are a spread of Cu–O bond distances ranging from 1.96–2.32 Å. As5+ is bonded to four O2- atoms to form AsO4 tetrahedra that share corners with two equivalent BaO8 hexagonal bipyramids, corners with five equivalent CuO5 trigonal bipyramids, and an edgeedge with one BaO8 hexagonal bipyramid. There are a spread of As–O bond distances ranging from 1.72–1.75 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Cu2+ and one As5+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to one Ba2+, one Cu2+, and one As5+ atom. In the third O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Ba2+, one Cu2+, and one As5+ atom. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Ba2+, one Cu2+, and one As5+ atom.
DOI: 10.17188/1192422
title: Materials Data on Sr2CuGe2O7 by Materials Project

description: Sr2CuGe2O7 crystallizes in the tetragonal P-42_1m space group. The structure is three-dimensional. Sr2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Sr–O bond distances ranging from 2.62–3.01 Å. Cu2+ is bonded to four equivalent O2- atoms to form CuO4 tetrahedra that share corners with four equivalent GeO4 tetrahedra. All Cu–O bond lengths are 1.95 Å. Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share a cornercorner with one GeO4 tetrahedra and corners with two equivalent CuO4 tetrahedra. There are a spread of Ge–O bond distances ranging from 1.74–1.83 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Sr2+, one Cu2+, and one Ge4+ atom. In the second O2- site, O2- is bonded to three equivalent Sr2+ and one Ge4+ atom to form a mixture of distorted edge and corner-sharing OSr3Ge tetrahedra. In the third O2- site, O2- is bonded to two equivalent Sr2+ and two equivalent Ge4+ atoms to form a mixture of distorted edge and corner-sharing OSr2Ge2 tetrahedra.