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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Na2MgH8(SO6)2 by Materials Project

Na2MgH8(SO6)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Na1+ is bonded to six O2- atoms to form distorted NaO6 octahedra that share corners with two equivalent MgO6 octahedra, corners with four equivalent SO4 tetrahedra, and an edgeedge with one NaO6 octahedra. The corner-sharing octahedra tilt angles range from 54–67°. There are a spread of Na–O bond distances ranging from 2.40–2.65 Å. Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with four equivalent NaO6 octahedra and corners with two equivalent SO4 tetrahedra. The corner-sharing octahedra tilt angles range from 54–67°. There are four shorter (2.09 Å) and two longer (2.14 Å) Mg–O bond lengths. There are four inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to two O2- atoms. There is one shorter (1.00 Å) and one longer (1.71 Å) H–O bond length. 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. In the third H1+ site, H1+ is bonded in a single-bond geometry to two O2- atoms. There is one shorter (1.00 Å) and one longer (1.73 Å) H–O bond length. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. S6+ is bonded to four O2- atoms to form SO4 tetrahedra that share a cornercorner with one MgO6 octahedra and corners with four equivalent NaO6 octahedra. The corner-sharing octahedra tilt angles range from 38–63°. There are a spread of S–O bond distances ranging from 1.48–1.51 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 150 degrees geometry to one Mg2+ and one S6+ atom. In the second O2- site, O2- is bonded in a distorted water-like geometry to one Na1+, one Mg2+, and two H1+ atoms. In the third O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Na1+ and one S6+ atom. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to one Na1+, one H1+, and one S6+ atom. In the fifth O2- site, O2- is bonded in a distorted water-like geometry to one Na1+, one Mg2+, and two H1+ atoms. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to one Na1+, one H1+, and one S6+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Na2MgH4(SO4)2 by Materials Project

Na2MgH4(SO4)2 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. Na1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Na–O bond distances ranging from 2.41–2.52 Å. Mg2+ is bonded in an octahedral geometry to six O2- atoms. There are a spread of Mg–O bond distances ranging from 2.09–2.15 Å. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to two O2- atoms. There is one shorter (1.00 Å) and one longer (1.76 Å) H–O bond length. In the second H1+ site, H1+ is bonded in a distorted single-bond geometry to two O2- atoms. There is one shorter (1.01 Å) and one longer (1.69 Å) H–O bond length. S4+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There are a spread of S–O bond distances ranging from 1.55–1.57 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded to two equivalent Na1+, one Mg2+, and one S4+ atom to form a mixture of distorted edge and corner-sharing ONa2MgS trigonal pyramids. In the second O2- site, O2- is bonded in a 1-coordinate geometry to one Na1+, two H1+, and one S4+ atom. In the third O2- site, O2- is bonded to two equivalent Na1+, one Mg2+, and one S4+ atom to form a mixture of distorted edge and corner-sharing ONa2MgS trigonal pyramids. In the fourth O2- site, O2- is bonded in a distorted water-like geometry to one Na1+, one Mg2+, and two H1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Na2Mg3H10(SO6)3 by Materials Project

Na2Mg3H10(SO6)3 crystallizes in the orthorhombic Cmc2_1 space group. The structure is three-dimensional. Na1+ is bonded in a 3-coordinate geometry to three O2- atoms. There are a spread of Na–O bond distances ranging from 2.36–2.55 Å. There are two inequivalent Mg2+ sites. In the first Mg2+ site, Mg2+ is bonded to six O2- atoms to form distorted MgO6 octahedra that share corners with four equivalent MgO6 octahedra and corners with four SO4 tetrahedra. The corner-sharing octahedra tilt angles range from 57–60°. There are a spread of Mg–O bond distances ranging from 2.01–2.28 Å. In the second Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with two equivalent MgO6 octahedra, corners with three SO4 tetrahedra, and an edgeedge with one MgO6 octahedra. The corner-sharing octahedra tilt angles range from 57–60°. There are a spread of Mg–O bond distances ranging from 2.08–2.20 Å. There are six 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. In the third 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 fourth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.01 Å. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to two O2- atoms. There is one shorter (0.99 Å) and one longer (1.74 Å) H–O bond length. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to two O2- atoms. There is one shorter (0.99 Å) and one longer (1.74 Å) H–O bond length. There are two inequivalent S6+ sites. In the first S6+ site, S6+ is bonded to four O2- atoms to form SO4 tetrahedra that share corners with three MgO6 octahedra. The corner-sharing octahedra tilt angles range from 44–50°. There are a spread of S–O bond distances ranging from 1.48–1.50 Å. In the second S6+ site, S6+ is bonded to four O2- atoms to form SO4 tetrahedra that share corners with four MgO6 octahedra. The corner-sharing octahedra tilt angles range from 35–61°. There is one shorter (1.47 Å) and three longer (1.50 Å) S–O bond length. There are eleven inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Mg2+ and one S6+ atom. In the second O2- site, O2- is bonded in a 2-coordinate geometry to one Mg2+ and one S6+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+, one H1+, and one S6+ atom. In the fourth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Mg2+ and one S6+ atom. In the fifth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Mg2+ and one S6+ atom. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to one Mg2+, one H1+, and one S6+ atom. In the seventh O2- site, O2- is bonded in a bent 120 degrees geometry to one Mg2+ and one S6+ atom. In the eighth O2- site, O2- is bonded in a distorted single-bond geometry to three Mg2+ and one H1+ atom. In the ninth O2- site, O2- is bonded in a distorted single-bond geometry to three Mg2+ and one H1+ atom. In the tenth O2- site, O2- is bonded in a distorted water-like geometry to one Na1+, one Mg2+, and two H1+ atoms. In the eleventh O2- site, O2- is bonded in a distorted water-like geometry to one Na1+ and two H1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Na2MgH32(SO12)2 by Materials Project

(Na(H2O)4)2Mg(H2O)6(H2O)2(SO4)2 crystallizes in the triclinic P-1 space group. The structure is one-dimensional and consists of one magnesium;hexahydrate molecule; two sulfuric acid molecules; two water molecules; and one Na(H2O)4 ribbon oriented in the (1, 0, 0) direction. In the Na(H2O)4 ribbon, Na1+ is bonded to six O2- atoms to form distorted edge-sharing NaO6 octahedra. There are a spread of Na–O bond distances ranging from 2.42–2.55 Å. There are eight 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. In the third 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 fourth 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 fifth 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 sixth 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 seventh 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 eighth 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 four inequivalent O2- sites. In the first O2- site, O2- is bonded in a water-like geometry to one Na1+ and two H1+ atoms. In the second O2- site, O2- is bonded in a distorted water-like geometry to two equivalent Na1+ and two H1+ atoms. In the third O2- site, O2- is bonded in a distorted water-like geometry to two equivalent Na1+ and two H1+ atoms. In the fourth O2- site, O2- is bonded in a water-like geometry to one Na1+ and two H1+ atoms.

36 MATERIALS SCIENCE↗