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DOE OSTI2020

Materials Data on Na2Al2Si3(HO3)4 by Materials Project

Na2Al2Si3(HO3)4 crystallizes in the orthorhombic Fdd2 space group. The structure is three-dimensional. Na1+ is bonded in a 6-coordinate geometry to two H1+ and four O2- atoms. There are one shorter (2.50 Å) and one longer (2.54 Å) Na–H bond lengths. There are a spread of Na–O bond distances ranging from 2.33–2.49 Å. Al3+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Al–O bond distances ranging from 1.74–1.94 Å. There are two inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded to four O2- atoms to form corner-sharing SiO4 tetrahedra. There is two shorter (1.61 Å) and two longer (1.65 Å) Si–O bond length. In the second Si4+ site, Si4+ is bonded to four O2- atoms to form corner-sharing SiO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.62–1.73 Å. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a distorted L-shaped geometry to one Na1+ and one H1+ atom. The H–H bond length is 0.76 Å. In the second H1+ site, H1+ is bonded in a distorted single-bond geometry to one Na1+ and one H1+ atom. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to one Al3+, one Si4+, and one O2- atom. The O–O bond length is 1.52 Å. In the second O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+, one Al3+, and one Si4+ atom. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to one Na1+, one Al3+, and one Si4+ atom. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Na1+, one Al3+, and one O2- atom. In the fifth O2- site, O2- is bonded in a bent 150 degrees geometry to one Al3+ and one Si4+ atom. In the sixth O2- site, O2- is bonded in a bent 150 degrees geometry to two Si4+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Na2Al2Si3(HO3)4 by Materials Project

Na2Al2Si3(HO3)4 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are eight inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Na–O bond distances ranging from 2.37–2.99 Å. In the second Na1+ site, Na1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Na–O bond distances ranging from 2.40–2.73 Å. In the third Na1+ site, Na1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Na–O bond distances ranging from 2.32–2.63 Å. In the fourth Na1+ site, Na1+ is bonded in a 2-coordinate geometry to six O2- atoms. There are a spread of Na–O bond distances ranging from 2.25–3.09 Å. In the fifth Na1+ site, Na1+ is bonded in a 4-coordinate geometry to five O2- atoms. There are a spread of Na–O bond distances ranging from 2.27–2.98 Å. In the sixth Na1+ site, Na1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Na–O bond distances ranging from 2.29–2.86 Å. In the seventh Na1+ site, Na1+ is bonded in a 5-coordinate geometry to one H1+ and four O2- atoms. The Na–H bond length is 2.53 Å. There are a spread of Na–O bond distances ranging from 2.39–2.49 Å. In the eighth Na1+ site, Na1+ is bonded in a 6-coordinate geometry to three H1+ and three O2- atoms. There are a spread of Na–H bond distances ranging from 2.41–2.64 Å. There are a spread of Na–O bond distances ranging from 2.28–2.70 Å. There are eight inequivalent Al3+ sites. In the first Al3+ site, Al3+ is bonded to four O2- atoms to form AlO4 tetrahedra that share a cornercorner with one SiHO3 tetrahedra and a cornercorner with one SiHO4 trigonal bipyramid. There are a spread of Al–O bond distances ranging from 1.75–1.89 Å. In the second Al3+ site, Al3+ is bonded to four O2- atoms to form AlO4 tetrahedra that share a cornercorner with one AlO4 tetrahedra and a cornercorner with one SiO4 tetrahedra. There are a spread of Al–O bond distances ranging from 1.75–1.81 Å. In the third Al3+ site, Al3+ is bonded to four O2- atoms to form AlO4 tetrahedra that share a cornercorner with one AlO4 tetrahedra, a cornercorner with one SiO4 tetrahedra, and a cornercorner with one AlO5 trigonal bipyramid. There are a spread of Al–O bond distances ranging from 1.75–1.91 Å. In the fourth Al3+ site, Al3+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Al–O bond distances ranging from 1.76–1.99 Å. In the fifth Al3+ site, Al3+ is bonded to one H1+ and three O2- atoms to form AlHO3 tetrahedra that share a cornercorner with one AlHO5 octahedra and a cornercorner with one SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 61°. The Al–H bond length is 1.64 Å. There are a spread of Al–O bond distances ranging from 1.75–1.86 Å. In the sixth Al3+ site, Al3+ is bonded to one H1+ and five O2- atoms to form distorted AlHO5 octahedra that share a cornercorner with one AlHO3 tetrahedra, corners with two SiO4 tetrahedra, and an edgeedge with one AlO5 trigonal bipyramid. The Al–H bond length is 1.84 Å. There are a spread of Al–O bond distances ranging from 1.78–2.15 Å. In the seventh Al3+ site, Al3+ is bonded to five O2- atoms to form distorted AlO5 trigonal bipyramids that share a cornercorner with one AlO4 tetrahedra and a cornercorner with one SiO4 tetrahedra. There are a spread of Al–O bond distances ranging from 1.81–2.02 Å. In the eighth Al3+ site, Al3+ is bonded to five O2- atoms to form distorted AlO5 trigonal bipyramids that share a cornercorner with one SiO4 tetrahedra and an edgeedge with one AlHO5 octahedra. There are a spread of Al–O bond distances ranging from 1.75–2.31 Å. There are twelve inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There is two shorter (1.63 Å) and one longer (1.69 Å) Si–O bond length. In the second Si4+ site, Si4+ is bonded in a trigonal non-coplanar geometry to one H1+ and two O2- atoms. The Si–H bond length is 1.49 Å. There is one shorter (1.62 Å) and one longer (1.69 Å) Si–O bond length. In the third Si4+ site, Si4+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There are a spread of Si–O bond distances ranging from 1.62–1.68 Å. In the fourth Si4+ site, Si4+ is bonded to one H1+ and four O2- atoms to form SiHO4 trigonal bipyramids that share a cornercorner with one AlO4 tetrahedra. The Si–H bond length is 1.52 Å. There are a spread of Si–O bond distances ranging from 1.71–1.80 Å. In the fifth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one AlHO5 octahedra, a cornercorner with one AlHO3 tetrahedra, and a cornercorner with one SiHO4 trigonal bipyramid. The corner-sharing octahedral tilt angles are 49°. There are a spread of Si–O bond distances ranging from 1.59–1.72 Å. In the sixth Si4+ site, Si4+ is bonded to one H1+ and four O2- atoms to form distorted corner-sharing SiHO4 trigonal bipyramids. The Si–H bond length is 1.48 Å. There are a spread of Si–O bond distances ranging from 1.69–1.76 Å. In the seventh Si4+ site, Si4+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There are a spread of Si–O bond distances ranging from 1.66–1.69 Å. In the eighth Si4+ site, Si4+ is bonded in a trigonal non-coplanar geometry to two H1+ and one O2- atom. There is one shorter (1.49 Å) and one longer (1.51 Å) Si–H bond length. The Si–O bond length is 1.65 Å. In the ninth Si4+ site, Si4+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There are a spread of Si–O bond distances ranging from 1.62–1.69 Å. In the tenth Si4+ site, Si4+ is bonded to one H1+ and three O2- atoms to form SiHO3 tetrahedra that share a cornercorner with one AlO4 tetrahedra. The Si–H bond length is 1.47 Å. There are a spread of Si–O bond distances ranging from 1.62–1.69 Å. In the eleventh Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one AlHO5 octahedra, a cornercorner with one AlO5 trigonal bipyramid, and a cornercorner with one SiHO4 trigonal bipyramid. The corner-sharing octahedral tilt angles are 53°. There are a spread of Si–O bond distances ranging from 1.63–1.66 Å. In the twelfth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with two AlO4 tetrahedra and a cornercorner with one AlO5 trigonal bipyramid. There are a spread of Si–O bond distances ranging from 1.58–1.72 Å. There are sixteen inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a bent 120 degrees geometry to one Na1+ and one Si4+ atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one Si4+ atom. In the third H1+ site, H1+ is bonded in a bent 120 degrees geometry to one Na1+ and one Si4+ atom. In the fourth 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 fifth H1+ site, H1+ is bonded in a single-bond geometry to one Si4+ atom. In the sixth H1+ site, H1+ is bonded in a distorted linear geometry to two O2- atoms. There is one shorter (1.04 Å) and one longer (1.53 Å) H–O bond length. In the seventh H1+ site, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.05 Å) and one longer (1.56 Å) H–O bond length. In the eighth 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 ninth H1+ site, H1+ is bonded in a single-bond geometry to one Si4+ atom. In the tenth H1+ site, H1+ is bonded in a bent 120 degrees geometry to one Na1+ and one Si4+ atom. In the eleventh H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.97 Å. In the twelfth H1+ site, H1+ is bonded in a distorted single-bond geometry to two O2- atoms. There is one shorter (1.00 Å) and one longer (1.69 Å) H–O bond length. In the thirteenth H1+ site, H1+ is bonded in a distorted linear geometry to two O2- atoms. There is one shorter (1.01 Å) and one longer (1.57 Å) H–O bond length. In the fourteenth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.97 Å. In the fifteenth H1+ site, H1+ is bonded in a distorted bent 120 degrees geometry to one Na1+ and two Al3+ atoms. In the sixteenth H1+ site, H1+ is bonded in a single-bond geometry to two O2- atoms. There is one shorter (1.01 Å) and one longer (1.75 Å) H–O bond length. There are forty-eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a trigonal planar geometry to one Al3+, one Si4+, and one H1+ atom. In the second O2- site, O2- is bonded in a 4-coordinate geometry to three Na1+ and one Si4+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to two Na1+, one Si4+, and one O2- atom. The O–O bond length is 1.50 Å. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to one Al3+ and one Si4+ atom. In the fifth O2- site, O2- is bonded in a trigonal planar geometry to two Al3+ and one H1+ atom. In the sixth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to two Na1+, one Al3+, and one Si4+ atom. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+ and one H1+ atom. In the eighth O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+, one Al3+, and one H1+ atom. In the ninth O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+, one Si4+, and one O2- atom. The O–O bond length is 1.51 Å. In the tenth O2- site, O2- is bonded in a 1-coordinate geometry to one Na1+, one Al3+, and one O2- atom. In the eleventh O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+, one Al3+, and one Si4+ atom. In the twelfth O2- site, O2- is bonded in a 2-coordinate geometry to one Na1+, one Al3+, and one Si4+ atom. In the thirteenth O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+, one H1+, and one O2- atom. The O–O bond length is 1.47 Å. In the fourteenth O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+, one Si4+, and one O2- atom. The O–O bond length is 1.50 Å. In the fifteenth O2- site, O2- is bonded in a 1-coordinate geometry to two Na1+, one Al3+, and one O2- atom. In the sixteenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Na1+, one Al3+, and one Si4+ atom. In the seventeenth O2- site, O2- is bonded in a bent 120 degrees geometry to one Si4+ and one H1+ atom. In the eighteenth O2- site, O2- is bonded in a 1-coordinate geometry to one Na1+, one Al3+, and one O2- atom. The O–O bond length is 1.42 Å. In the nineteenth O2- site, O2- is bonded in a 2-coordinate geometry to two Al3+ and one O2- atom. In the twentieth O2- site, O2- is bonded in a trigonal non-coplanar geometry to one Al3+, one Si4+, and one H1+ atom. In the twenty-first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Al3+, one Si4+, and one H1+ atom. In the twenty-second O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+, one H1+, and one O2- atom. The O–O bond length is 1.48 Å. In the twenty-third O2- site, O2- is bonded in a trigonal planar geometry to two Al3+ and one Si4+ atom. In the twenty-fourth O2- site, O2- is bonded in a trigonal non-coplanar geometry to two Al3+ and one Si4+ atom. In the twenty-fifth O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+, one Al3+, one H1+, and one O2- atom. In the twenty-sixth O2- site, O2- is bonded in a 2-coordinate geometry to two Al3+ and one O2- atom. The O–O bond length is 1.55 Å. In the twenty-seventh O2- site, O2- is bonded in a bent 120 degrees geometry to one Al3+ and one Si4+ atom. In the twenty-eighth O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+, one Al3+, and one H1+ atom. In the twenty-ninth O2- site, O2- is bonded in a 4-coordinate geometry to two Na1+, one Al3+, and one Si4+ atom. In the thirtieth O2- site, O2- is bonded in a 1-coordinate g

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Na2Al2Si3(HO3)4 by Materials Project

Na2Al2Si3(HO3)4 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are four inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Na–O bond distances ranging from 2.34–2.58 Å. In the second Na1+ site, Na1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Na–O bond distances ranging from 2.33–2.59 Å. In the third Na1+ site, Na1+ is bonded to four O2- atoms to form distorted NaO4 tetrahedra that share a cornercorner with one SiO4 tetrahedra, an edgeedge with one AlO4 tetrahedra, and an edgeedge with one AlO5 trigonal bipyramid. There are a spread of Na–O bond distances ranging from 2.32–2.46 Å. In the fourth Na1+ site, Na1+ is bonded in a 5-coordinate geometry to one H1+ and six O2- atoms. The Na–H bond length is 2.46 Å. There are a spread of Na–O bond distances ranging from 2.30–2.88 Å. There are four inequivalent Al3+ sites. In the first Al3+ site, Al3+ is bonded to five O2- atoms to form AlO5 trigonal bipyramids that share a cornercorner with one AlO4 tetrahedra, a cornercorner with one SiHO3 tetrahedra, a cornercorner with one AlO5 trigonal bipyramid, and an edgeedge with one NaO4 tetrahedra. There are a spread of Al–O bond distances ranging from 1.77–2.03 Å. In the second Al3+ site, Al3+ is bonded to five O2- atoms to form distorted AlO5 trigonal bipyramids that share a cornercorner with one AlO4 tetrahedra, a cornercorner with one AlO5 trigonal bipyramid, and an edgeedge with one SiHO3 tetrahedra. There are a spread of Al–O bond distances ranging from 1.76–2.12 Å. In the third Al3+ site, Al3+ is bonded to four O2- atoms to form distorted AlO4 tetrahedra that share a cornercorner with one SiO4 tetrahedra, corners with two AlO5 trigonal bipyramids, and an edgeedge with one NaO4 tetrahedra. There are a spread of Al–O bond distances ranging from 1.73–1.85 Å. In the fourth Al3+ site, Al3+ is bonded in a 3-coordinate geometry to three O2- atoms. There is two shorter (1.77 Å) and one longer (1.96 Å) Al–O bond length. There are six inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There are a spread of Si–O bond distances ranging from 1.60–1.68 Å. In the second Si4+ site, Si4+ is bonded to five O2- atoms to form corner-sharing SiO5 trigonal bipyramids. There are a spread of Si–O bond distances ranging from 1.70–1.84 Å. In the third Si4+ site, Si4+ is bonded to one H1+ and three O2- atoms to form SiHO3 tetrahedra that share a cornercorner with one AlO5 trigonal bipyramid and an edgeedge with one AlO5 trigonal bipyramid. The Si–H bond length is 1.47 Å. There are a spread of Si–O bond distances ranging from 1.62–1.67 Å. In the fourth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one SiO4 tetrahedra and a cornercorner with one SiO5 trigonal bipyramid. There are a spread of Si–O bond distances ranging from 1.61–1.68 Å. In the fifth Si4+ site, Si4+ is bonded in a water-like geometry to one H1+ and one O2- atom. The Si–H bond length is 1.51 Å. The Si–O bond length is 1.71 Å. In the sixth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one NaO4 tetrahedra, a cornercorner with one AlO4 tetrahedra, and a cornercorner with one SiO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.60–1.70 Å. There are eight inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one Si4+ atom. 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 Na1+ and one O2- atom. The H–O bond length is 0.98 Å. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one Si4+ atom. In the sixth H1+ site, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.09 Å) and one longer (1.44 Å) H–O bond length. In the seventh H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.97 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 twenty-four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+, one Al3+, and one Si4+ atom. In the second O2- site, O2- is bonded in a 2-coordinate geometry to one Na1+, one Si4+, and one H1+ atom. In the third O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Al3+, one Si4+, and one H1+ atom. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to one Na1+, one Al3+, and one O2- atom. The O–O bond length is 1.49 Å. In the fifth O2- site, O2- is bonded in a bent 150 degrees geometry to two Si4+ atoms. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to one Al3+, one H1+, and one O2- atom. In the seventh O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+ and two Si4+ atoms. In the eighth O2- site, O2- is bonded in a 4-coordinate geometry to two Na1+ and two Al3+ atoms. In the ninth O2- site, O2- is bonded in a 1-coordinate geometry to two Na1+, one Al3+, and one H1+ atom. In the tenth O2- site, O2- is bonded in a 1-coordinate geometry to two Na1+, one Si4+, and one O2- atom. The O–O bond length is 1.54 Å. In the eleventh O2- site, O2- is bonded in a distorted T-shaped geometry to two Al3+ and one Si4+ atom. In the twelfth O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+, one Al3+, and one Si4+ atom. In the thirteenth O2- site, O2- is bonded in a 1-coordinate geometry to one Na1+, one Si4+, and one H1+ atom. In the fourteenth O2- site, O2- is bonded in a distorted T-shaped geometry to two Al3+ and one Si4+ atom. In the fifteenth O2- site, O2- is bonded in a bent 120 degrees geometry to one Si4+ and one H1+ atom. In the sixteenth O2- site, O2- is bonded in a 4-coordinate geometry to two Na1+, one Al3+, and one O2- atom. The O–O bond length is 1.52 Å. In the seventeenth O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+, one Al3+, and one O2- atom. In the eighteenth O2- site, O2- is bonded in a water-like geometry to two Si4+ atoms. In the nineteenth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Na1+, one Al3+, and one Si4+ atom. In the twentieth O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+, one Si4+, and one O2- atom. The O–O bond length is 1.50 Å. In the twenty-first O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+ and two Al3+ atoms. In the twenty-second O2- site, O2- is bonded in a 1-coordinate geometry to one Na1+, one Si4+, and one O2- atom. In the twenty-third O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+, one Si4+, and one O2- atom. In the twenty-fourth O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+, one Si4+, and one H1+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Na2Al2Si3(HO3)4 by Materials Project

Na2Al2Si3(HO3)4 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are four inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a 7-coordinate geometry to one H1+ and six O2- atoms. The Na–H bond length is 2.59 Å. There are a spread of Na–O bond distances ranging from 2.45–2.83 Å. In the second Na1+ site, Na1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Na–O bond distances ranging from 2.20–2.69 Å. In the third Na1+ site, Na1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Na–O bond distances ranging from 2.35–2.85 Å. In the fourth Na1+ site, Na1+ is bonded in a 8-coordinate geometry to one H1+ and seven O2- atoms. The Na–H bond length is 2.39 Å. There are a spread of Na–O bond distances ranging from 2.32–2.92 Å. There are four inequivalent Al3+ sites. In the first Al3+ site, Al3+ is bonded to one H1+ and three O2- atoms to form distorted AlHO3 tetrahedra that share corners with two SiHO3 tetrahedra. The Al–H bond length is 1.66 Å. There are a spread of Al–O bond distances ranging from 1.75–1.91 Å. In the second Al3+ site, Al3+ is bonded in a 4-coordinate geometry to one H1+ and three O2- atoms. The Al–H bond length is 1.87 Å. There are a spread of Al–O bond distances ranging from 1.70–1.79 Å. In the third Al3+ site, Al3+ is bonded to four O2- atoms to form AlO4 tetrahedra that share corners with three SiO4 tetrahedra. There are a spread of Al–O bond distances ranging from 1.75–1.79 Å. In the fourth Al3+ site, Al3+ is bonded to four O2- atoms to form AlO4 tetrahedra that share corners with three SiO4 tetrahedra. There are a spread of Al–O bond distances ranging from 1.72–1.81 Å. There are six inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one AlO4 tetrahedra and corners with two SiHO3 tetrahedra. There are a spread of Si–O bond distances ranging from 1.61–1.67 Å. In the second Si4+ site, Si4+ is bonded to one H1+ and three O2- atoms to form SiHO3 tetrahedra that share a cornercorner with one AlHO3 tetrahedra and a cornercorner with one SiO4 tetrahedra. The Si–H bond length is 1.46 Å. There is two shorter (1.64 Å) and one longer (1.68 Å) Si–O bond length. In the third Si4+ site, Si4+ is bonded to one H1+ and three O2- atoms to form corner-sharing SiHO3 tetrahedra. The Si–H bond length is 1.48 Å. There are a spread of Si–O bond distances ranging from 1.59–1.68 Å. In the fourth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one AlO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.59–1.69 Å. In the fifth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with two AlO4 tetrahedra and corners with two SiO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.62–1.69 Å. In the sixth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one SiHO3 tetrahedra and corners with three AlHO3 tetrahedra. There are a spread of Si–O bond distances ranging from 1.60–1.79 Å. There are eight inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a distorted bent 150 degrees geometry to two Al3+ atoms. 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 Si4+ atom. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one Si4+ atom. 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 distorted linear geometry to one Na1+ and two O2- atoms. There is one shorter (1.04 Å) and one longer (1.45 Å) H–O bond length. In the seventh H1+ site, H1+ is bonded in a single-bond geometry to one Na1+ and two O2- atoms. There is one shorter (0.99 Å) and one longer (1.74 Å) H–O bond length. In the eighth H1+ site, H1+ is bonded in a distorted linear geometry to two O2- atoms. There is one shorter (1.02 Å) and one longer (1.60 Å) H–O bond length. There are twenty-four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to two Na1+, one Al3+, and one Si4+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to two Na1+ and one Si4+ atom. In the third O2- site, O2- is bonded in a 4-coordinate geometry to two Na1+ and two Si4+ atoms. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to one Si4+ and two H1+ atoms. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to one Si4+ atom. In the sixth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Na1+, one Al3+, and one Si4+ atom. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to one Al3+ atom. In the eighth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Na1+, one Al3+, and one Si4+ atom. In the ninth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Na1+ and two Si4+ atoms. In the tenth O2- site, O2- is bonded in a bent 150 degrees geometry to one Al3+ and one Si4+ atom. In the eleventh O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Al3+ and one Si4+ atom. In the twelfth O2- site, O2- is bonded in a distorted single-bond geometry to one Al3+ atom. In the thirteenth O2- site, O2- is bonded in a distorted single-bond geometry to one Al3+ and two H1+ atoms. In the fourteenth O2- site, O2- is bonded in a 1-coordinate geometry to two Na1+, one Si4+, and one H1+ atom. In the fifteenth O2- site, O2- is bonded in a distorted single-bond geometry to two Na1+ and one H1+ atom. In the sixteenth O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+ and two Si4+ atoms. In the seventeenth O2- site, O2- is bonded in a bent 120 degrees geometry to one Al3+ and one Si4+ atom. In the eighteenth O2- site, O2- is bonded in a 2-coordinate geometry to two Na1+, one Si4+, and one H1+ atom. In the nineteenth O2- site, O2- is bonded in a bent 120 degrees geometry to two Si4+ atoms. In the twentieth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Na1+, one Al3+, and one Si4+ atom. In the twenty-first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Na1+, one Al3+, and one Si4+ atom. In the twenty-second O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+ and two Al3+ atoms. In the twenty-third O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+, one Al3+, and one Si4+ atom. In the twenty-fourth O2- site, O2- is bonded in a distorted single-bond geometry to two Na1+ and one H1+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Na2Al2Si3(HO3)4 by Materials Project

Na2Al2Si3(HO3)4 crystallizes in the orthorhombic Fdd2 space group. The structure is three-dimensional. Na1+ is bonded to six O2- atoms to form distorted NaO6 pentagonal pyramids that share corners with two equivalent AlO4 tetrahedra, corners with two equivalent SiO4 tetrahedra, edges with two equivalent NaO6 pentagonal pyramids, an edgeedge with one AlO4 tetrahedra, and an edgeedge with one SiO4 tetrahedra. There are a spread of Na–O bond distances ranging from 2.37–2.68 Å. Al3+ is bonded to four O2- atoms to form AlO4 tetrahedra that share corners with two equivalent NaO6 pentagonal pyramids, corners with four SiO4 tetrahedra, and an edgeedge with one NaO6 pentagonal pyramid. All Al–O bond lengths are 1.76 Å. There are two inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with two equivalent AlO4 tetrahedra and corners with two equivalent SiO4 tetrahedra. There is two shorter (1.63 Å) and two longer (1.65 Å) Si–O bond length. In the second Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with two equivalent NaO6 pentagonal pyramids, a cornercorner with one SiO4 tetrahedra, corners with three equivalent AlO4 tetrahedra, and an edgeedge with one NaO6 pentagonal pyramid. There is three shorter (1.63 Å) and one longer (1.66 Å) Si–O bond length. 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 0.98 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+, one Al3+, and one Si4+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+, one Al3+, and one Si4+ atom. In the third O2- site, O2- is bonded in a bent 150 degrees geometry to two Si4+ atoms. In the fourth O2- site, O2- is bonded in a distorted water-like geometry to two equivalent Na1+ and two H1+ atoms. In the fifth O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Na1+, one Al3+, and one Si4+ atom. In the sixth O2- site, O2- is bonded in a bent 150 degrees geometry to one Al3+ and one Si4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Na2Al2Si3(HO3)4 by Materials Project

Na2Al2Si3(HO3)4 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are eight inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Na–O bond distances ranging from 2.33–2.66 Å. In the second Na1+ site, Na1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Na–O bond distances ranging from 2.39–2.92 Å. In the third Na1+ site, Na1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Na–O bond distances ranging from 2.26–2.90 Å. In the fourth Na1+ site, Na1+ is bonded in a 7-coordinate geometry to one H1+ and six O2- atoms. The Na–H bond length is 2.58 Å. There are a spread of Na–O bond distances ranging from 2.36–2.82 Å. In the fifth Na1+ site, Na1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Na–O bond distances ranging from 2.23–2.68 Å. In the sixth Na1+ site, Na1+ is bonded in a 3-coordinate geometry to three O2- atoms. There are a spread of Na–O bond distances ranging from 2.18–2.43 Å. In the seventh Na1+ site, Na1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Na–O bond distances ranging from 2.27–2.60 Å. In the eighth Na1+ site, Na1+ is bonded in a 5-coordinate geometry to one H1+ and four O2- atoms. The Na–H bond length is 2.29 Å. There are a spread of Na–O bond distances ranging from 2.23–2.45 Å. There are eight inequivalent Al3+ sites. In the first Al3+ site, Al3+ is bonded to four O2- atoms to form distorted AlO4 trigonal pyramids that share a cornercorner with one SiHO3 tetrahedra and a cornercorner with one SiHO4 trigonal bipyramid. There are a spread of Al–O bond distances ranging from 1.77–1.91 Å. In the second Al3+ site, Al3+ is bonded to four O2- atoms to form AlO4 tetrahedra that share a cornercorner with one AlO4 tetrahedra and a cornercorner with one SiO4 tetrahedra. There are a spread of Al–O bond distances ranging from 1.75–1.84 Å. In the third Al3+ site, Al3+ is bonded to four O2- atoms to form AlO4 tetrahedra that share a cornercorner with one AlO4 tetrahedra, a cornercorner with one SiO4 tetrahedra, and a cornercorner with one AlO5 trigonal bipyramid. There are a spread of Al–O bond distances ranging from 1.76–1.89 Å. In the fourth Al3+ site, Al3+ is bonded to four O2- atoms to form distorted AlO4 tetrahedra that share a cornercorner with one AlHO5 octahedra, a cornercorner with one AlHO3 tetrahedra, a cornercorner with one AlO5 trigonal bipyramid, a cornercorner with one SiHO4 trigonal bipyramid, and an edgeedge with one SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 50°. There are a spread of Al–O bond distances ranging from 1.72–1.87 Å. In the fifth Al3+ site, Al3+ is bonded to one H1+ and three O2- atoms to form distorted AlHO3 tetrahedra that share a cornercorner with one AlHO5 octahedra, a cornercorner with one AlO4 tetrahedra, and a cornercorner with one SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 65°. The Al–H bond length is 1.59 Å. There are a spread of Al–O bond distances ranging from 1.75–1.86 Å. In the sixth Al3+ site, Al3+ is bonded to one H1+ and five O2- atoms to form distorted AlHO5 octahedra that share corners with two AlO4 tetrahedra, corners with two SiO4 tetrahedra, and an edgeedge with one AlO5 trigonal bipyramid. The Al–H bond length is 2.04 Å. There are a spread of Al–O bond distances ranging from 1.77–2.09 Å. In the seventh Al3+ site, Al3+ is bonded to five O2- atoms to form distorted AlO5 trigonal bipyramids that share a cornercorner with one AlO4 tetrahedra and a cornercorner with one SiO4 tetrahedra. There are a spread of Al–O bond distances ranging from 1.79–2.14 Å. In the eighth Al3+ site, Al3+ is bonded to five O2- atoms to form AlO5 trigonal bipyramids that share a cornercorner with one AlO4 tetrahedra, a cornercorner with one SiO4 tetrahedra, and an edgeedge with one AlHO5 octahedra. There are a spread of Al–O bond distances ranging from 1.77–1.93 Å. There are twelve inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There are a spread of Si–O bond distances ranging from 1.61–1.68 Å. In the second Si4+ site, Si4+ is bonded in a trigonal non-coplanar geometry to one H1+ and two O2- atoms. The Si–H bond length is 1.49 Å. There is one shorter (1.65 Å) and one longer (1.70 Å) Si–O bond length. In the third Si4+ site, Si4+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There are a spread of Si–O bond distances ranging from 1.60–1.78 Å. In the fourth Si4+ site, Si4+ is bonded to one H1+ and four O2- atoms to form SiHO4 trigonal bipyramids that share a cornercorner with one AlO4 trigonal pyramid. The Si–H bond length is 1.50 Å. There are a spread of Si–O bond distances ranging from 1.73–1.80 Å. In the fifth Si4+ site, Si4+ is bonded to four O2- atoms to form distorted SiO4 tetrahedra that share a cornercorner with one AlHO5 octahedra, a cornercorner with one AlHO3 tetrahedra, a cornercorner with one SiHO4 trigonal bipyramid, and an edgeedge with one AlO4 tetrahedra. The corner-sharing octahedral tilt angles are 48°. There are a spread of Si–O bond distances ranging from 1.56–1.75 Å. In the sixth Si4+ site, Si4+ is bonded to one H1+ and four O2- atoms to form distorted SiHO4 trigonal bipyramids that share a cornercorner with one AlO4 tetrahedra and corners with two SiO4 tetrahedra. The Si–H bond length is 1.47 Å. There are a spread of Si–O bond distances ranging from 1.70–1.81 Å. In the seventh Si4+ site, Si4+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There is one shorter (1.67 Å) and two longer (1.69 Å) Si–O bond length. In the eighth Si4+ site, Si4+ is bonded in a trigonal non-coplanar geometry to two H1+ and one O2- atom. There is one shorter (1.46 Å) and one longer (1.49 Å) Si–H bond length. The Si–O bond length is 1.67 Å. In the ninth Si4+ site, Si4+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There are a spread of Si–O bond distances ranging from 1.65–1.68 Å. In the tenth Si4+ site, Si4+ is bonded to one H1+ and three O2- atoms to form SiHO3 tetrahedra that share a cornercorner with one AlO4 trigonal pyramid. The Si–H bond length is 1.49 Å. There are a spread of Si–O bond distances ranging from 1.63–1.67 Å. In the eleventh Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one AlHO5 octahedra, a cornercorner with one AlO5 trigonal bipyramid, and a cornercorner with one SiHO4 trigonal bipyramid. The corner-sharing octahedral tilt angles are 60°. There are a spread of Si–O bond distances ranging from 1.64–1.66 Å. In the twelfth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with two AlO4 tetrahedra and a cornercorner with one AlO5 trigonal bipyramid. There are a spread of Si–O bond distances ranging from 1.58–1.74 Å. There are sixteen inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one Si4+ atom. In the second H1+ site, H1+ is bonded in a distorted single-bond geometry to one Na1+ and one Si4+ atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one Si4+ atom. 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 Si4+ atom. In the sixth H1+ site, H1+ is bonded in a distorted bent 150 degrees geometry to two O2- atoms. There is one shorter (1.05 Å) and one longer (1.53 Å) H–O bond length. In the seventh H1+ site, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.06 Å) and one longer (1.48 Å) H–O bond length. In the eighth H1+ site, H1+ is bonded in a distorted single-bond geometry to two O2- atoms. There is one shorter (1.00 Å) and one longer (1.69 Å) H–O bond length. In the ninth H1+ site, H1+ is bonded in a single-bond geometry to one Si4+ atom. In the tenth H1+ site, H1+ is bonded in a single-bond geometry to one Si4+ atom. In the eleventh 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 twelfth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.02 Å. In the thirteenth H1+ site, H1+ is bonded in a distorted linear geometry to two O2- atoms. There is one shorter (1.01 Å) and one longer (1.58 Å) H–O bond length. In the fourteenth 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 fifteenth H1+ site, H1+ is bonded in a 3-coordinate geometry to one Na1+ and two Al3+ atoms. In the sixteenth 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 forty-eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a trigonal planar geometry to one Al3+, one Si4+, and one H1+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to two Na1+ and one Si4+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to two Na1+, one Si4+, and one O2- atom. The O–O bond length is 1.49 Å. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to one Al3+ and one Si4+ atom. In the fifth O2- site, O2- is bonded in a trigonal planar geometry to two Al3+ and one H1+ atom. In the sixth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to two Na1+, one Al3+, and one Si4+ atom. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+ and one H1+ atom. In the eighth O2- site, O2- is bonded in a 2-coordinate geometry to two Na1+, one Al3+, and one H1+ atom. In the ninth O2- site, O2- is bonded in a 1-coordinate geometry to one Na1+, one Si4+, and one O2- atom. The O–O bond length is 1.51 Å. In the tenth O2- site, O2- is bonded in a 1-coordinate geometry to one Na1+, one Al3+, and one O2- atom. In the eleventh O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+, one Al3+, and one Si4+ atom. In the twelfth O2- site, O2- is bonded in a bent 120 degrees geometry to one Al3+ and one Si4+ atom. In the thirteenth O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+, one H1+, and one O2- atom. The O–O bond length is 1.47 Å. In the fourteenth O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+ and one Si4+ atom. In the fifteenth O2- site, O2- is bonded in a 1-coordinate geometry to two Na1+, one Al3+, and one O2- atom. In the sixteenth O2- site, O2- is bonded in a 2-coordinate geometry to one Na1+, one Al3+, and one Si4+ atom. In the seventeenth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Na1+, one Si4+, and one H1+ atom. In the eighteenth O2- site, O2- is bonded in a 1-coordinate geometry to one Na1+, one Al3+, and one O2- atom. The O–O bond length is 1.49 Å. In the nineteenth O2- site, O2- is bonded in a 3-coordinate geometry to two Al3+ and one O2- atom. In the twentieth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Al3+, one Si4+, and one H1+ atom. In the twenty-first O2- site, O2- is bonded in a distorted trigonal planar geometry to one Al3+, one Si4+, and one H1+ atom. In the twenty-second O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+ and one H1+ atom. In the twenty-third O2- site, O2- is bonded in a trigonal planar geometry to two Al3+ and one Si4+ atom. In the twenty-fourth O2- site, O2- is bonded in a trigonal non-coplanar geometry to two Al3+ and one Si4+ atom. In the twenty-fifth O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+, one Al3+, and one H1+ atom. In the twenty-sixth O2- site, O2- is bonded in a 1-coordinate geometry to one Na1+, one Al3+, one H1+, and one O2- atom. The O–O bond length is 1.52 Å. In the twenty-seventh O2- site, O2- is bonded in a 2-

36 MATERIALS SCIENCE↗