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Materials Data on BaH2(CO2)4 by Materials Project

BaH2(CO2)4 crystallizes in the monoclinic C2/c space group. The structure is two-dimensional and consists of two BaH2(CO2)4 sheets oriented in the (1, 0, 0) direction. Ba2+ is bonded in a 10-coordinate geometry to two equivalent H1+ and eight O2- atoms. Both Ba–H bond lengths are 3.07 Å. There are a spread of Ba–O bond distances ranging from 2.73–3.20 Å. There are two inequivalent C3+ sites. In the first C3+ site, C3+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.17 Å) and one longer (1.18 Å) C–O bond length. In the second C3+ site, C3+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.26 Å) and one longer (1.28 Å) C–O bond length. H1+ is bonded in a distorted single-bond geometry to one Ba2+ atom. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+ and one C3+ atom. In the second O2- site, O2- is bonded in a single-bond geometry to one Ba2+ and one C3+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Ba2+ and one C3+ atom. In the fourth O2- site, O2- is bonded in a single-bond geometry to one C3+ atom.

36 MATERIALS SCIENCE↗

Materials Data on BaH2 by Materials Project

BaH2 is Cotunnite structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Ba2+ is bonded in a 9-coordinate geometry to nine H1- atoms. There are a spread of Ba–H bond distances ranging from 2.61–3.02 Å. There are two inequivalent H1- sites. In the first H1- site, H1- is bonded to four equivalent Ba2+ atoms to form HBa4 tetrahedra that share corners with eight equivalent HBa5 square pyramids, corners with eight equivalent HBa4 tetrahedra, edges with six equivalent HBa5 square pyramids, and edges with two equivalent HBa4 tetrahedra. In the second H1- site, H1- is bonded to five equivalent Ba2+ atoms to form distorted HBa5 square pyramids that share corners with eight equivalent HBa5 square pyramids, corners with eight equivalent HBa4 tetrahedra, edges with six equivalent HBa5 square pyramids, and edges with six equivalent HBa4 tetrahedra.

36 MATERIALS SCIENCE↗

Materials Data on BaH2(SO4)2 by Materials Project

BaH2(SO4)2 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is three-dimensional. Ba2+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of Ba–O bond distances ranging from 2.68–3.29 Å. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. There are two inequivalent S6+ sites. In the first S6+ site, S6+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of S–O bond distances ranging from 1.47–1.59 Å. In the second S6+ site, S6+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of S–O bond distances ranging from 1.46–1.61 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a water-like geometry to one H1+ and one S6+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Ba2+ and one S6+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+ and one S6+ atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+ and one S6+ atom. In the fifth O2- site, O2- is bonded in a distorted water-like geometry to one Ba2+, one H1+, and one S6+ atom. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Ba2+ and one S6+ atom. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+ and one S6+ atom. In the eighth O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Ba2+ and one S6+ atom.

36 MATERIALS SCIENCE↗

Materials Data on BaH2(CO2)2 by Materials Project

Ba(HCOO)2 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is three-dimensional. Ba2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Ba–O bond distances ranging from 2.71–3.06 Å. There are two inequivalent C2+ sites. In the first C2+ site, C2+ is bonded in a trigonal planar geometry to one H1+ and two O2- atoms. The C–H bond length is 1.12 Å. There is one shorter (1.26 Å) and one longer (1.29 Å) C–O bond length. In the second C2+ site, C2+ is bonded in a trigonal planar geometry to one H1+ and two O2- atoms. The C–H bond length is 1.11 Å. There is one shorter (1.27 Å) and one longer (1.28 Å) C–O bond length. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one C2+ atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one C2+ atom. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Ba2+ and one C2+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Ba2+ and one C2+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Ba2+ and one C2+ atom. In the fourth O2- site, O2- is bonded in a single-bond geometry to one Ba2+ and one C2+ atom.

36 MATERIALS SCIENCE↗

Materials Data on BaH2(CO2)2 by Materials Project

Ba(HCOO)2 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is three-dimensional. Ba2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ba–O bond distances ranging from 2.80–2.94 Å. There are two inequivalent C2+ sites. In the first C2+ site, C2+ is bonded in a trigonal planar geometry to one H1+ and two O2- atoms. The C–H bond length is 1.11 Å. There is one shorter (1.27 Å) and one longer (1.28 Å) C–O bond length. In the second C2+ site, C2+ is bonded in a trigonal planar geometry to one H1+ and two O2- atoms. The C–H bond length is 1.11 Å. There is one shorter (1.26 Å) and one longer (1.27 Å) C–O bond length. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one C2+ atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one C2+ atom. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to two equivalent Ba2+ and one C2+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Ba2+ and one C2+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Ba2+ and one C2+ atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Ba2+ and one C2+ atom.

36 MATERIALS SCIENCE↗

Materials Data on BaH2(S2O3)2 by Materials Project

(BaH(SO3)2)2H2(S)4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional and consists of four hydrogen molecules, eight hydrogen sulfide molecules, and one BaH(SO3)2 framework. In the BaH(SO3)2 framework, Ba2+ is bonded in a 6-coordinate geometry to one H1+ and six O2- atoms. The Ba–H bond length is 3.06 Å. There are a spread of Ba–O bond distances ranging from 2.68–2.77 Å. H1+ is bonded in a single-bond geometry to one Ba2+ atom. There are two inequivalent S2+ sites. In the first S2+ site, S2+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. All S–O bond lengths are 1.47 Å. In the second S2+ site, S2+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. All S–O bond lengths are 1.47 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Ba2+ and one S2+ atom. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Ba2+ and one S2+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+ and one S2+ atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+ and one S2+ atom. In the fifth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Ba2+ and one S2+ atom. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+ and one S2+ atom.

36 MATERIALS SCIENCE↗

Materials Data on BaH2(CO3)2 by Materials Project

Ba(HO2)2(CO)2 crystallizes in the triclinic P1 space group. The structure is two-dimensional and consists of two formaldehyde molecules and one Ba(HO2)2 sheet oriented in the (0, 0, 1) direction. In the Ba(HO2)2 sheet, Ba2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ba–O bond distances ranging from 2.69–2.83 Å. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted water-like geometry to two equivalent Ba2+ atoms. In the second O2- site, O2- is bonded in a distorted water-like geometry to two equivalent Ba2+ atoms. In the third O2- site, O2- is bonded in a single-bond geometry to two equivalent Ba2+ and one H1+ atom. In the fourth O2- site, O2- is bonded in a single-bond geometry to two equivalent Ba2+ and one H1+ atom.

36 MATERIALS SCIENCE↗

Materials Data on BaH2S5O6 by Materials Project

BaH2(SO3)2(S)3 crystallizes in the orthorhombic Pnma space group. The structure is two-dimensional and consists of twelve hydrogen sulfide molecules and two BaH2(SO3)2 sheets oriented in the (0, 0, 1) direction. In each BaH2(SO3)2 sheet, Ba2+ is bonded in a 9-coordinate geometry to three H1+ and six O2- atoms. There are a spread of Ba–H bond distances ranging from 2.98–3.02 Å. There are a spread of Ba–O bond distances ranging from 2.71–2.80 Å. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a bent 120 degrees geometry to two equivalent Ba2+ atoms. In the second H1+ site, H1+ is bonded in a single-bond geometry to one Ba2+ atom. S+1.60+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There is two shorter (1.47 Å) and one longer (1.48 Å) S–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 Ba2+ and one S+1.60+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+ and one S+1.60+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+ and one S+1.60+ atom.

36 MATERIALS SCIENCE↗

Materials Data on BaH2S5O6 by Materials Project

BaH2(SO3)2(S)3 crystallizes in the triclinic P-1 space group. The structure is two-dimensional and consists of six hydrogen sulfide molecules and one BaH2(SO3)2 sheet oriented in the (0, 0, 1) direction. In the BaH2(SO3)2 sheet, Ba2+ is bonded in a 6-coordinate geometry to three H1+ and six O2- atoms. There are one shorter (3.17 Å) and two longer (3.18 Å) Ba–H bond lengths. There are a spread of Ba–O bond distances ranging from 2.70–2.78 Å. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a distorted bent 120 degrees geometry to two equivalent Ba2+ atoms. In the second H1+ site, H1+ is bonded in a single-bond geometry to one Ba2+ atom. There are two inequivalent S+1.60+ sites. In the first S+1.60+ site, S+1.60+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There is one shorter (1.46 Å) and two longer (1.47 Å) S–O bond length. In the second S+1.60+ site, S+1.60+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There is one shorter (1.46 Å) and two longer (1.47 Å) S–O bond length. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Ba2+ and one S+1.60+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+ and one S+1.60+ atom. In the third O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Ba2+ and one S+1.60+ atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+ and one S+1.60+ atom. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+ and one S+1.60+ atom. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+ and one S+1.60+ atom.

36 MATERIALS SCIENCE↗

Materials Data on BaH2Se(S2O3)2 by Materials Project

BaH2(SO3)2Se(S)2 crystallizes in the orthorhombic Pnma space group. The structure is two-dimensional and consists of eight hydrogen sulfide molecules; four selenium molecules; and two BaH2(SO3)2 sheets oriented in the (0, 0, 1) direction. In each BaH2(SO3)2 sheet, Ba2+ is bonded in a 9-coordinate geometry to three H1+ and six O2- atoms. There are a spread of Ba–H bond distances ranging from 2.85–3.07 Å. There are a spread of Ba–O bond distances ranging from 2.71–2.80 Å. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a bent 120 degrees geometry to two equivalent Ba2+ atoms. In the second H1+ site, H1+ is bonded in a single-bond geometry to one Ba2+ atom. S1+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There are a spread of S–O bond distances ranging from 1.46–1.48 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+ and one S1+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+ and one S1+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+ and one S1+ atom.

36 MATERIALS SCIENCE↗