Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Ca”

Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 1,621 records · Page 90

Materials Data on CaSi2(NO)2 by Materials Project

CaSi2O2N2 crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional. there are six inequivalent Ca2+ sites. In the first Ca2+ site, Ca2+ is bonded in a 7-coordinate geometry to one N3- and six O2- atoms. The Ca–N bond length is 2.60 Å. There are a spread of Ca–O bond distances ranging from 2.33–2.64 Å. In the second Ca2+ site, Ca2+ is bonded in a 7-coordinate geometry to one N3- and six O2- atoms. The Ca–N bond length is 2.80 Å. There are a spread of Ca–O bond distances ranging from 2.31–2.97 Å. In the third Ca2+ site, Ca2+ is bonded in a 7-coordinate geometry to one N3- and six O2- atoms. The Ca–N bond length is 2.74 Å. There are a spread of Ca–O bond distances ranging from 2.37–2.82 Å. In the fourth Ca2+ site, Ca2+ is bonded in a 7-coordinate geometry to one N3- and six O2- atoms. The Ca–N bond length is 2.79 Å. There are a spread of Ca–O bond distances ranging from 2.36–2.71 Å. In the fifth Ca2+ site, Ca2+ is bonded in a 7-coordinate geometry to one N3- and six O2- atoms. The Ca–N bond length is 2.81 Å. There are a spread of Ca–O bond distances ranging from 2.32–3.06 Å. In the sixth Ca2+ site, Ca2+ is bonded in a 7-coordinate geometry to one N3- and six O2- atoms. The Ca–N bond length is 2.60 Å. There are a spread of Ca–O bond distances ranging from 2.34–2.71 Å. There are twelve inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded to three N3- and one O2- atom to form corner-sharing SiN3O tetrahedra. There is one shorter (1.74 Å) and two longer (1.75 Å) Si–N bond length. The Si–O bond length is 1.62 Å. In the second Si4+ site, Si4+ is bonded to three N3- and one O2- atom to form corner-sharing SiN3O tetrahedra. There is one shorter (1.74 Å) and two longer (1.75 Å) Si–N bond length. The Si–O bond length is 1.63 Å. In the third Si4+ site, Si4+ is bonded to three N3- and one O2- atom to form corner-sharing SiN3O tetrahedra. There are a spread of Si–N bond distances ranging from 1.72–1.76 Å. The Si–O bond length is 1.64 Å. In the fourth Si4+ site, Si4+ is bonded to three N3- and one O2- atom to form corner-sharing SiN3O tetrahedra. There are a spread of Si–N bond distances ranging from 1.75–1.77 Å. The Si–O bond length is 1.63 Å. In the fifth Si4+ site, Si4+ is bonded to three N3- and one O2- atom to form corner-sharing SiN3O tetrahedra. There are a spread of Si–N bond distances ranging from 1.72–1.76 Å. The Si–O bond length is 1.63 Å. In the sixth Si4+ site, Si4+ is bonded to three N3- and one O2- atom to form corner-sharing SiN3O tetrahedra. There is one shorter (1.74 Å) and two longer (1.75 Å) Si–N bond length. The Si–O bond length is 1.63 Å. In the seventh Si4+ site, Si4+ is bonded to three N3- and one O2- atom to form corner-sharing SiN3O tetrahedra. There is one shorter (1.74 Å) and two longer (1.75 Å) Si–N bond length. The Si–O bond length is 1.62 Å. In the eighth Si4+ site, Si4+ is bonded to three N3- and one O2- atom to form corner-sharing SiN3O tetrahedra. There are a spread of Si–N bond distances ranging from 1.74–1.78 Å. The Si–O bond length is 1.63 Å. In the ninth Si4+ site, Si4+ is bonded to three N3- and one O2- atom to form corner-sharing SiN3O tetrahedra. There is one shorter (1.74 Å) and two longer (1.75 Å) Si–N bond length. The Si–O bond length is 1.63 Å. In the tenth Si4+ site, Si4+ is bonded to three N3- and one O2- atom to form corner-sharing SiN3O tetrahedra. There is two shorter (1.76 Å) and one longer (1.77 Å) Si–N bond length. The Si–O bond length is 1.63 Å. In the eleventh Si4+ site, Si4+ is bonded to three N3- and one O2- atom to form corner-sharing SiN3O tetrahedra. There is one shorter (1.73 Å) and two longer (1.76 Å) Si–N bond length. The Si–O bond length is 1.62 Å. In the twelfth Si4+ site, Si4+ is bonded to three N3- and one O2- atom to form corner-sharing SiN3O tetrahedra. There are a spread of Si–N bond distances ranging from 1.73–1.77 Å. The Si–O bond length is 1.62 Å. There are twelve inequivalent N3- sites. In the first N3- site, N3- is bonded in a trigonal planar geometry to three Si4+ atoms. In the second N3- site, N3- is bonded in a trigonal planar geometry to three Si4+ atoms. In the third N3- site, N3- is bonded in a distorted trigonal planar geometry to one Ca2+ and three Si4+ atoms. In the fourth N3- site, N3- is bonded in a trigonal planar geometry to three Si4+ atoms. In the fifth N3- site, N3- is bonded in a distorted trigonal planar geometry to one Ca2+ and three Si4+ atoms. In the sixth N3- site, N3- is bonded in a trigonal planar geometry to three Si4+ atoms. In the seventh N3- site, N3- is bonded in a 4-coordinate geometry to one Ca2+ and three Si4+ atoms. In the eighth N3- site, N3- is bonded in a 4-coordinate geometry to one Ca2+ and three Si4+ atoms. In the ninth N3- site, N3- is bonded in a distorted trigonal planar geometry to one Ca2+ and three Si4+ atoms. In the tenth N3- site, N3- is bonded in a trigonal planar geometry to three Si4+ atoms. In the eleventh N3- site, N3- is bonded in a distorted trigonal planar geometry to one Ca2+ and three Si4+ atoms. In the twelfth N3- site, N3- is bonded in a trigonal planar geometry to three Si4+ atoms. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to three Ca2+ and one Si4+ atom. In the second O2- site, O2- is bonded in a 4-coordinate geometry to three Ca2+ and one Si4+ atom. In the third O2- site, O2- is bonded in a 4-coordinate geometry to three Ca2+ and one Si4+ atom. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to three Ca2+ and one Si4+ atom. In the fifth O2- site, O2- is bonded in a 4-coordinate geometry to three Ca2+ and one Si4+ atom. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to three Ca2+ and one Si4+ atom. In the seventh O2- site, O2- is bonded in a 3-coordinate geometry to three Ca2+ and one Si4+ atom. In the eighth O2- site, O2- is bonded in a 3-coordinate geometry to three Ca2+ and one Si4+ atom. In the ninth O2- site, O2- is bonded in a 1-coordinate geometry to three Ca2+ and one Si4+ atom. In the tenth O2- site, O2- is bonded in a 1-coordinate geometry to three Ca2+ and one Si4+ atom. In the eleventh O2- site, O2- is bonded in a 4-coordinate geometry to three Ca2+ and one Si4+ atom. In the twelfth O2- site, O2- is bonded in a 4-coordinate geometry to three Ca2+ and one Si4+ atom.

36 MATERIALS SCIENCE↗

Materials Data on LiCa2InGe2 by Materials Project

LiCa2InGe2 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Li is bonded in a 4-coordinate geometry to one In and four Ge atoms. The Li–In bond length is 2.95 Å. There are a spread of Li–Ge bond distances ranging from 2.70–2.83 Å. There are two inequivalent Ca sites. In the first Ca site, Ca is bonded in a 5-coordinate geometry to three equivalent In and five Ge atoms. There are two shorter (3.56 Å) and one longer (3.65 Å) Ca–In bond lengths. There are a spread of Ca–Ge bond distances ranging from 3.09–3.19 Å. In the second Ca site, Ca is bonded in a 5-coordinate geometry to four equivalent In and five Ge atoms. There are two shorter (3.32 Å) and two longer (3.48 Å) Ca–In bond lengths. There are a spread of Ca–Ge bond distances ranging from 3.10–3.16 Å. In is bonded in a 12-coordinate geometry to one Li, seven Ca, and four Ge atoms. There are a spread of In–Ge bond distances ranging from 2.83–2.87 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to one Li, six Ca, and two equivalent In atoms. In the second Ge site, Ge is bonded in a 9-coordinate geometry to three equivalent Li, four Ca, and two equivalent In atoms.

36 MATERIALS SCIENCE↗

Materials Data on Ca5Au4 by Materials Project

Ca5Au4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are three inequivalent Ca sites. In the first Ca site, Ca is bonded to seven Au atoms to form distorted CaAu7 pentagonal bipyramids that share corners with four equivalent CaAu6 octahedra, corners with six equivalent CaAu7 pentagonal bipyramids, corners with five equivalent CaAu6 pentagonal pyramids, edges with three equivalent CaAu7 pentagonal bipyramids, edges with two equivalent CaAu6 pentagonal pyramids, faces with two equivalent CaAu6 octahedra, faces with two equivalent CaAu7 pentagonal bipyramids, and faces with four equivalent CaAu6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 43–51°. There are a spread of Ca–Au bond distances ranging from 3.15–3.54 Å. In the second Ca site, Ca is bonded to six Au atoms to form distorted CaAu6 pentagonal pyramids that share corners with three equivalent CaAu6 octahedra, corners with five equivalent CaAu7 pentagonal bipyramids, corners with four equivalent CaAu6 pentagonal pyramids, edges with two equivalent CaAu7 pentagonal bipyramids, edges with four equivalent CaAu6 pentagonal pyramids, faces with two equivalent CaAu6 octahedra, and faces with four equivalent CaAu7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 37–45°. There are a spread of Ca–Au bond distances ranging from 2.99–3.11 Å. In the third Ca site, Ca is bonded to six Au atoms to form CaAu6 octahedra that share corners with four equivalent CaAu6 octahedra, corners with eight equivalent CaAu7 pentagonal bipyramids, corners with six equivalent CaAu6 pentagonal pyramids, faces with four equivalent CaAu7 pentagonal bipyramids, and faces with four equivalent CaAu6 pentagonal pyramids. The corner-sharing octahedral tilt angles are 52°. There are a spread of Ca–Au bond distances ranging from 3.11–3.20 Å. There are two inequivalent Au sites. In the first Au site, Au is bonded in a 9-coordinate geometry to eight Ca and one Au atom. The Au–Au bond length is 2.91 Å. In the second Au site, Au is bonded in a 9-coordinate geometry to eight Ca atoms.

36 MATERIALS SCIENCE↗

Materials Data on Ca21(Mn2Sb9)2 by Materials Project

Ca21(Mn2Sb9)2 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are twelve inequivalent Ca2+ sites. In the first Ca2+ site, Ca2+ is bonded to six Sb+2.78- atoms to form CaSb6 octahedra that share corners with five CaSb6 octahedra, a cornercorner with one CaSb7 pentagonal bipyramid, corners with three equivalent CaSb6 pentagonal pyramids, corners with three MnSb4 tetrahedra, edges with two equivalent CaSb6 octahedra, a faceface with one CaSb6 octahedra, a faceface with one CaSb7 pentagonal bipyramid, and faces with two equivalent CaSb6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 34–59°. There are a spread of Ca–Sb bond distances ranging from 3.14–3.39 Å. In the second Ca2+ site, Ca2+ is bonded to six Sb+2.78- atoms to form CaSb6 octahedra that share corners with six CaSb6 octahedra, a cornercorner with one CaSb7 pentagonal bipyramid, corners with four MnSb4 tetrahedra, edges with three CaSb6 octahedra, an edgeedge with one MnSb4 tetrahedra, faces with two CaSb6 octahedra, and a faceface with one CaSb7 pentagonal bipyramid. The corner-sharing octahedra tilt angles range from 33–70°. There are a spread of Ca–Sb bond distances ranging from 3.24–3.50 Å. In the third Ca2+ site, Ca2+ is bonded in a 6-coordinate geometry to six Sb+2.78- atoms. There are a spread of Ca–Sb bond distances ranging from 3.06–3.73 Å. In the fourth Ca2+ site, Ca2+ is bonded to six Sb+2.78- atoms to form distorted CaSb6 octahedra that share corners with five CaSb6 octahedra, a cornercorner with one CaSb7 pentagonal bipyramid, corners with two equivalent CaSb6 pentagonal pyramids, corners with two MnSb4 tetrahedra, edges with two CaSb6 octahedra, an edgeedge with one CaSb6 pentagonal pyramid, edges with two MnSb4 tetrahedra, faces with two CaSb6 octahedra, and a faceface with one CaSb7 pentagonal bipyramid. The corner-sharing octahedra tilt angles range from 34–59°. There are a spread of Ca–Sb bond distances ranging from 3.07–3.39 Å. In the fifth Ca2+ site, Ca2+ is bonded to six Sb+2.78- atoms to form distorted CaSb6 octahedra that share corners with seven CaSb6 octahedra, a cornercorner with one CaSb7 pentagonal bipyramid, a cornercorner with one CaSb6 pentagonal pyramid, corners with two MnSb4 tetrahedra, edges with two CaSb6 octahedra, an edgeedge with one MnSb4 tetrahedra, faces with three CaSb6 octahedra, a faceface with one CaSb7 pentagonal bipyramid, and a faceface with one MnSb4 tetrahedra. The corner-sharing octahedra tilt angles range from 33–54°. There are a spread of Ca–Sb bond distances ranging from 3.15–3.45 Å. In the sixth Ca2+ site, Ca2+ is bonded to six Sb+2.78- atoms to form distorted CaSb6 octahedra that share corners with six CaSb6 octahedra, a cornercorner with one CaSb7 pentagonal bipyramid, a cornercorner with one CaSb6 pentagonal pyramid, corners with three MnSb4 tetrahedra, edges with two CaSb6 octahedra, an edgeedge with one CaSb6 pentagonal pyramid, an edgeedge with one MnSb4 tetrahedra, faces with two CaSb6 octahedra, and a faceface with one CaSb7 pentagonal bipyramid. The corner-sharing octahedra tilt angles range from 36–50°. There are a spread of Ca–Sb bond distances ranging from 3.10–3.45 Å. In the seventh Ca2+ site, Ca2+ is bonded in a 6-coordinate geometry to six Sb+2.78- atoms. There are a spread of Ca–Sb bond distances ranging from 3.12–3.83 Å. In the eighth Ca2+ site, Ca2+ is bonded to six Sb+2.78- atoms to form distorted CaSb6 pentagonal pyramids that share corners with seven CaSb6 octahedra, corners with two CaSb7 pentagonal bipyramids, a cornercorner with one MnSb4 tetrahedra, edges with two CaSb6 octahedra, an edgeedge with one CaSb6 pentagonal pyramid, an edgeedge with one MnSb4 tetrahedra, faces with two equivalent CaSb6 octahedra, a faceface with one CaSb7 pentagonal bipyramid, and faces with two equivalent CaSb6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 33–50°. There are a spread of Ca–Sb bond distances ranging from 3.10–3.38 Å. In the ninth Ca2+ site, Ca2+ is bonded in a 6-coordinate geometry to six Sb+2.78- atoms. There are a spread of Ca–Sb bond distances ranging from 3.11–3.72 Å. In the tenth Ca2+ site, Ca2+ is bonded in a 7-coordinate geometry to seven Sb+2.78- atoms. There are a spread of Ca–Sb bond distances ranging from 3.04–3.79 Å. In the eleventh Ca2+ site, Ca2+ is bonded to seven Sb+2.78- atoms to form CaSb7 pentagonal bipyramids that share corners with four CaSb6 octahedra, corners with two equivalent CaSb6 pentagonal pyramids, a cornercorner with one MnSb4 tetrahedra, an edgeedge with one CaSb7 pentagonal bipyramid, an edgeedge with one MnSb4 tetrahedra, faces with six CaSb6 octahedra, and faces with two equivalent MnSb4 tetrahedra. The corner-sharing octahedra tilt angles range from 39–51°. There are a spread of Ca–Sb bond distances ranging from 3.27–3.57 Å. In the twelfth Ca2+ site, Ca2+ is bonded to seven Sb+2.78- atoms to form distorted CaSb7 pentagonal bipyramids that share corners with six CaSb6 octahedra, corners with two equivalent CaSb6 pentagonal pyramids, corners with two MnSb4 tetrahedra, an edgeedge with one CaSb7 pentagonal bipyramid, faces with four CaSb6 octahedra, faces with two equivalent CaSb6 pentagonal pyramids, and faces with two equivalent MnSb4 tetrahedra. The corner-sharing octahedra tilt angles range from 50–57°. There are a spread of Ca–Sb bond distances ranging from 3.29–3.67 Å. There are three inequivalent Mn2+ sites. In the first Mn2+ site, Mn2+ is bonded to four Sb+2.78- atoms to form MnSb4 tetrahedra that share corners with seven CaSb6 octahedra, a cornercorner with one CaSb6 pentagonal pyramid, a cornercorner with one MnSb4 tetrahedra, edges with three CaSb6 octahedra, an edgeedge with one CaSb6 pentagonal pyramid, an edgeedge with one MnSb4 tetrahedra, and faces with two CaSb7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 37–57°. There are a spread of Mn–Sb bond distances ranging from 2.75–2.88 Å. In the second Mn2+ site, Mn2+ is bonded to four Sb+2.78- atoms to form MnSb4 tetrahedra that share corners with six CaSb6 octahedra, a cornercorner with one CaSb7 pentagonal bipyramid, corners with two equivalent MnSb4 tetrahedra, edges with two equivalent CaSb6 octahedra, an edgeedge with one CaSb7 pentagonal bipyramid, an edgeedge with one MnSb4 tetrahedra, and faces with two equivalent CaSb6 octahedra. The corner-sharing octahedra tilt angles range from 44–95°. There are a spread of Mn–Sb bond distances ranging from 2.73–2.79 Å. In the third Mn2+ site, Mn2+ is bonded to four Sb+2.78- atoms to form MnSb4 tetrahedra that share corners with eight CaSb6 octahedra, corners with two CaSb7 pentagonal bipyramids, edges with two equivalent CaSb6 octahedra, and an edgeedge with one MnSb4 tetrahedra. The corner-sharing octahedra tilt angles range from 38–60°. There are a spread of Mn–Sb bond distances ranging from 2.76–2.80 Å. There are fourteen inequivalent Sb+2.78- sites. In the first Sb+2.78- site, Sb+2.78- is bonded in a 9-coordinate geometry to eight Ca2+ and one Sb+2.78- atom. The Sb–Sb bond length is 2.94 Å. In the second Sb+2.78- site, Sb+2.78- is bonded in a 7-coordinate geometry to eight Ca2+ and one Mn2+ atom. In the third Sb+2.78- site, Sb+2.78- is bonded in a 8-coordinate geometry to six Ca2+ and two Mn2+ atoms. In the fourth Sb+2.78- site, Sb+2.78- is bonded in a 9-coordinate geometry to eight Ca2+ and one Mn2+ atom. In the fifth Sb+2.78- site, Sb+2.78- is bonded in a 4-coordinate geometry to seven Ca2+ and two equivalent Mn2+ atoms. In the sixth Sb+2.78- site, Sb+2.78- is bonded in a 7-coordinate geometry to seven Ca2+ and one Mn2+ atom. In the seventh Sb+2.78- site, Sb+2.78- is bonded in a 2-coordinate geometry to seven Ca2+ and one Sb+2.78- atom. The Sb–Sb bond length is 2.91 Å. In the eighth Sb+2.78- site, Sb+2.78- is bonded in a 8-coordinate geometry to eight Ca2+ atoms. In the ninth Sb+2.78- site, Sb+2.78- is bonded in a 8-coordinate geometry to eight Ca2+ atoms. In the tenth Sb+2.78- site, Sb+2.78- is bonded in a 9-coordinate geometry to eight Ca2+ and one Sb+2.78- atom. The Sb–Sb bond length is 2.98 Å. In the eleventh Sb+2.78- site, Sb+2.78- is bonded in a 8-coordinate geometry to eight Ca2+ atoms. In the twelfth Sb+2.78- site, Sb+2.78- is bonded in a 8-coordinate geometry to seven Ca2+ and one Mn2+ atom. In the thirteenth Sb+2.78- site, Sb+2.78- is bonded in a 7-coordinate geometry to five Ca2+, one Mn2+, and one Sb+2.78- atom. The Sb–Sb bond length is 2.94 Å. In the fourteenth Sb+2.78- site, Sb+2.78- is bonded in a 9-coordinate geometry to six Ca2+ and three Mn2+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on Ca3Ga3Rh2 by Materials Project

Ca3Rh2Ga3 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Ca sites. In the first Ca site, Ca is bonded in a 10-coordinate geometry to three equivalent Rh and seven Ga atoms. There are a spread of Ca–Rh bond distances ranging from 3.09–3.24 Å. There are a spread of Ca–Ga bond distances ranging from 3.15–3.44 Å. In the second Ca site, Ca is bonded in a 7-coordinate geometry to four equivalent Rh and five Ga atoms. There are two shorter (3.22 Å) and two longer (3.38 Å) Ca–Rh bond lengths. There are a spread of Ca–Ga bond distances ranging from 2.98–3.38 Å. Rh is bonded in a 4-coordinate geometry to five Ca and four Ga atoms. There are a spread of Rh–Ga bond distances ranging from 2.49–2.55 Å. There are two inequivalent Ga sites. In the first Ga site, Ga is bonded in a 9-coordinate geometry to seven Ca and two equivalent Rh atoms. In the second Ga site, Ga is bonded in a 3-coordinate geometry to six Ca and three equivalent Rh atoms.

36 MATERIALS SCIENCE↗

Materials Data on Ca3(HO3)2 by Materials Project

Ca3(HO3)2 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are two inequivalent Ca sites. In the first Ca site, Ca is bonded in a 6-coordinate geometry to six O atoms. There are two shorter (2.26 Å) and four longer (2.52 Å) Ca–O bond lengths. In the second Ca site, Ca is bonded in a 7-coordinate geometry to two equivalent H and five O atoms. Both Ca–H bond lengths are 2.35 Å. There are a spread of Ca–O bond distances ranging from 2.29–2.43 Å. H is bonded in a distorted single-bond geometry to two equivalent Ca and two O atoms. There is one shorter (1.00 Å) and one longer (1.66 Å) H–O bond length. There are three inequivalent O sites. In the first O site, O is bonded to three Ca and one O atom to form a mixture of distorted edge and corner-sharing OCa3O tetrahedra. The O–O bond length is 1.51 Å. In the second O site, O is bonded in a distorted single-bond geometry to two Ca and one H atom. In the third O site, O is bonded in a 5-coordinate geometry to three equivalent Ca, one H, and one O atom.

36 MATERIALS SCIENCE↗

Materials Data on Ca2B5H2ClO10 by Materials Project

Ca2B5H2O10Cl crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are six inequivalent Ca2+ sites. In the first Ca2+ site, Ca2+ is bonded in a 7-coordinate geometry to six O2- and one Cl1- atom. There are a spread of Ca–O bond distances ranging from 2.47–2.54 Å. The Ca–Cl bond length is 2.79 Å. In the second Ca2+ site, Ca2+ is bonded in a 8-coordinate geometry to six O2- and two Cl1- atoms. There are a spread of Ca–O bond distances ranging from 2.39–2.86 Å. There are one shorter (2.79 Å) and one longer (2.94 Å) Ca–Cl bond lengths. In the third Ca2+ site, Ca2+ is bonded in a 7-coordinate geometry to six O2- and one Cl1- atom. There are a spread of Ca–O bond distances ranging from 2.33–2.54 Å. The Ca–Cl bond length is 2.82 Å. In the fourth Ca2+ site, Ca2+ is bonded in a 8-coordinate geometry to six O2- and two Cl1- atoms. There are a spread of Ca–O bond distances ranging from 2.39–2.86 Å. There are one shorter (2.91 Å) and one longer (2.94 Å) Ca–Cl bond lengths. In the fifth Ca2+ site, Ca2+ is bonded in a 7-coordinate geometry to six O2- and one Cl1- atom. There are a spread of Ca–O bond distances ranging from 2.32–2.53 Å. The Ca–Cl bond length is 2.82 Å. In the sixth Ca2+ site, Ca2+ is bonded in a 8-coordinate geometry to seven O2- and one Cl1- atom. There are a spread of Ca–O bond distances ranging from 2.40–2.86 Å. The Ca–Cl bond length is 2.90 Å. There are fifteen inequivalent B3+ sites. In the first B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of B–O bond distances ranging from 1.37–1.39 Å. In the second B3+ site, B3+ is bonded to four O2- atoms to form corner-sharing BO4 tetrahedra. There are a spread of B–O bond distances ranging from 1.44–1.52 Å. In the third B3+ site, B3+ is bonded to four O2- atoms to form corner-sharing BO4 tetrahedra. There are a spread of B–O bond distances ranging from 1.44–1.50 Å. In the fourth B3+ site, B3+ is bonded to four O2- atoms to form corner-sharing BO4 tetrahedra. There are a spread of B–O bond distances ranging from 1.47–1.51 Å. In the fifth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.37 Å) and one longer (1.38 Å) B–O bond length. In the sixth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of B–O bond distances ranging from 1.36–1.39 Å. In the seventh B3+ site, B3+ is bonded to four O2- atoms to form corner-sharing BO4 tetrahedra. There are a spread of B–O bond distances ranging from 1.44–1.53 Å. In the eighth B3+ site, B3+ is bonded to four O2- atoms to form corner-sharing BO4 tetrahedra. There are a spread of B–O bond distances ranging from 1.44–1.50 Å. In the ninth B3+ site, B3+ is bonded to four O2- atoms to form corner-sharing BO4 tetrahedra. There is three shorter (1.48 Å) and one longer (1.51 Å) B–O bond length. In the tenth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.37 Å) and one longer (1.38 Å) B–O bond length. In the eleventh B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of B–O bond distances ranging from 1.36–1.39 Å. In the twelfth B3+ site, B3+ is bonded to four O2- atoms to form corner-sharing BO4 tetrahedra. There are a spread of B–O bond distances ranging from 1.44–1.54 Å. In the thirteenth B3+ site, B3+ is bonded to four O2- atoms to form corner-sharing BO4 tetrahedra. There are a spread of B–O bond distances ranging from 1.44–1.50 Å. In the fourteenth B3+ site, B3+ is bonded to four O2- atoms to form corner-sharing BO4 tetrahedra. There is three shorter (1.48 Å) and one longer (1.51 Å) B–O bond length. In the fifteenth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.37 Å) and one longer (1.38 Å) B–O bond length. 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 0.99 Å. In the third H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.97 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 0.97 Å. There are thirty inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ca2+ and two B3+ atoms. In the second O2- site, O2- is bonded in a 2-coordinate geometry to one Ca2+ and two B3+ atoms. In the third O2- site, O2- is bonded in a 3-coordinate geometry to one Ca2+ and two B3+ atoms. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to one Ca2+ and two B3+ atoms. In the fifth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ca2+ and two B3+ atoms. In the sixth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two Ca2+ and two B3+ atoms. In the seventh O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ca2+ and two B3+ atoms. In the eighth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two Ca2+ and two B3+ atoms. In the ninth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ca2+ and two B3+ atoms. In the tenth O2- site, O2- is bonded in a 2-coordinate geometry to one Ca2+ and two B3+ atoms. In the eleventh O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ca2+ and two B3+ atoms. In the twelfth O2- site, O2- is bonded in a 3-coordinate geometry to one Ca2+ and two B3+ atoms. In the thirteenth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two Ca2+ and two B3+ atoms. In the fourteenth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ca2+ and two B3+ atoms. In the fifteenth O2- site, O2- is bonded in a 2-coordinate geometry to one Ca2+ and two B3+ atoms. In the sixteenth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two Ca2+ and two B3+ atoms. In the seventeenth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ca2+ and two B3+ atoms. In the eighteenth O2- site, O2- is bonded in a 2-coordinate geometry to one Ca2+ and two B3+ atoms. In the nineteenth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ca2+ and two B3+ atoms. In the twentieth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ca2+ and two B3+ atoms. In the twenty-first O2- site, O2- is bonded in a distorted trigonal planar geometry to one Ca2+ and two B3+ atoms. In the twenty-second O2- site, O2- is bonded in a 2-coordinate geometry to one Ca2+ and two B3+ atoms. In the twenty-third O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ca2+ and two B3+ atoms. In the twenty-fourth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two Ca2+ and two B3+ atoms. In the twenty-fifth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ca2+ and two B3+ atoms. In the twenty-sixth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two Ca2+ and two B3+ atoms. In the twenty-seventh O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ca2+ and two B3+ atoms. In the twenty-eighth O2- site, O2- is bonded in a distorted water-like geometry to two Ca2+ and two H1+ atoms. In the twenty-ninth O2- site, O2- is bonded in a distorted water-like geometry to one Ca2+ and two H1+ atoms. In the thirtieth O2- site, O2- is bonded in a distorted water-like geometry to one Ca2+ and two H1+ atoms. There are three inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in an L-shaped geometry to two Ca2+ atoms. In the second Cl1- site, Cl1- is bonded in a T-shaped geometry to three Ca2+ atoms. In the third Cl1- site, Cl1- is bonded in a T-shaped geometry to three Ca2+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on Ca3Ti3Si2GeO15 by Materials Project

Ca3Ti3GeSi2O15 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are twelve inequivalent Ca2+ sites. In the first Ca2+ site, Ca2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Ca–O bond distances ranging from 2.30–2.61 Å. In the second Ca2+ site, Ca2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Ca–O bond distances ranging from 2.29–2.60 Å. In the third Ca2+ site, Ca2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Ca–O bond distances ranging from 2.30–2.61 Å. In the fourth Ca2+ site, Ca2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Ca–O bond distances ranging from 2.29–2.61 Å. In the fifth Ca2+ site, Ca2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Ca–O bond distances ranging from 2.27–2.68 Å. In the sixth Ca2+ site, Ca2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Ca–O bond distances ranging from 2.27–2.68 Å. In the seventh Ca2+ site, Ca2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Ca–O bond distances ranging from 2.29–2.70 Å. In the eighth Ca2+ site, Ca2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Ca–O bond distances ranging from 2.30–2.70 Å. In the ninth Ca2+ site, Ca2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Ca–O bond distances ranging from 2.31–2.70 Å. In the tenth Ca2+ site, Ca2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Ca–O bond distances ranging from 2.30–2.70 Å. In the eleventh Ca2+ site, Ca2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Ca–O bond distances ranging from 2.29–2.68 Å. In the twelfth Ca2+ site, Ca2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Ca–O bond distances ranging from 2.29–2.68 Å. There are twelve inequivalent Ti4+ sites. In the first Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with two equivalent TiO6 octahedra, corners with two GeO4 tetrahedra, and corners with two SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 36–39°. There are a spread of Ti–O bond distances ranging from 1.83–2.06 Å. In the second Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with two equivalent TiO6 octahedra, a cornercorner with one GeO4 tetrahedra, and corners with three SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 38°. There are a spread of Ti–O bond distances ranging from 1.82–2.07 Å. In the third Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with two equivalent TiO6 octahedra, a cornercorner with one GeO4 tetrahedra, and corners with three SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 38°. There are a spread of Ti–O bond distances ranging from 1.82–2.07 Å. In the fourth Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with two equivalent TiO6 octahedra, corners with two GeO4 tetrahedra, and corners with two SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 36–38°. There are a spread of Ti–O bond distances ranging from 1.83–2.06 Å. In the fifth Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with two equivalent TiO6 octahedra, a cornercorner with one GeO4 tetrahedra, and corners with three SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 34–38°. There are a spread of Ti–O bond distances ranging from 1.83–2.06 Å. In the sixth Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with two equivalent TiO6 octahedra, a cornercorner with one GeO4 tetrahedra, and corners with three SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 34–38°. There are a spread of Ti–O bond distances ranging from 1.83–2.06 Å. In the seventh Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with two equivalent TiO6 octahedra, corners with two GeO4 tetrahedra, and corners with two SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 36–38°. There are a spread of Ti–O bond distances ranging from 1.81–2.06 Å. In the eighth Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with two equivalent TiO6 octahedra, a cornercorner with one GeO4 tetrahedra, and corners with three SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 34–38°. There are a spread of Ti–O bond distances ranging from 1.82–2.05 Å. In the ninth Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with two equivalent TiO6 octahedra, a cornercorner with one GeO4 tetrahedra, and corners with three SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 34–38°. There are a spread of Ti–O bond distances ranging from 1.82–2.05 Å. In the tenth Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with two equivalent TiO6 octahedra, corners with two GeO4 tetrahedra, and corners with two SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 36–39°. There are a spread of Ti–O bond distances ranging from 1.81–2.06 Å. In the eleventh Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with two equivalent TiO6 octahedra, a cornercorner with one GeO4 tetrahedra, and corners with three SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 38°. There are a spread of Ti–O bond distances ranging from 1.81–2.07 Å. In the twelfth Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with two equivalent TiO6 octahedra, a cornercorner with one GeO4 tetrahedra, and corners with three SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 38°. There are a spread of Ti–O bond distances ranging from 1.81–2.07 Å. There are four inequivalent Ge4+ sites. In the first Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with four TiO6 octahedra. The corner-sharing octahedra tilt angles range from 41–56°. There is one shorter (1.76 Å) and three longer (1.77 Å) Ge–O bond length. In the second Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with four TiO6 octahedra. The corner-sharing octahedra tilt angles range from 40–56°. All Ge–O bond lengths are 1.77 Å. In the third Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with four TiO6 octahedra. The corner-sharing octahedra tilt angles range from 40–56°. All Ge–O bond lengths are 1.77 Å. In the fourth Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with four TiO6 octahedra. The corner-sharing octahedra tilt angles range from 41–57°. There is one shorter (1.76 Å) and three longer (1.77 Å) Ge–O bond length. There are eight inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with four TiO6 octahedra. The corner-sharing octahedra tilt angles range from 35–53°. There is three shorter (1.65 Å) and one longer (1.66 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 four TiO6 octahedra. The corner-sharing octahedra tilt angles range from 35–53°. There is three shorter (1.65 Å) and one longer (1.66 Å) Si–O bond length. In the third Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with four TiO6 octahedra. The corner-sharing octahedra tilt angles range from 35–52°. There is two shorter (1.65 Å) and two longer (1.66 Å) Si–O bond length. In the fourth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with four TiO6 octahedra. The corner-sharing octahedra tilt angles range from 34–52°. There is two shorter (1.65 Å) and two longer (1.66 Å) Si–O bond length. In the fifth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with four TiO6 octahedra. The corner-sharing octahedra tilt angles range from 35–52°. There is two shorter (1.65 Å) and two longer (1.66 Å) Si–O bond length. In the sixth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with four TiO6 octahedra. The corner-sharing octahedra tilt angles range from 35–52°. There is two shorter (1.65 Å) and two longer (1.66 Å) Si–O bond length. In the seventh Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with four TiO6 octahedra. The corner-sharing octahedra tilt angles range from 35–52°. There is two shorter (1.64 Å) and two longer (1.66 Å) Si–O bond length. In the eighth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with four TiO6 octahedra. The corner-sharing octahedra tilt angles range from 35–52°. There are a spread of Si–O bond distances ranging from 1.64–1.66 Å. There are sixty inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two Ca2+, one Ti4+, and one Si4+ atom. In the second O2- site, O2- is bonded in a 4-coordinate geometry to two Ca2+, one Ti4+, and one Si4+ atom. In the third O2- site, O2- is bonded in a 4-coordinate geometry to two Ca2+, one Ti4+, and one Si4+ atom. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to two Ca2+, one Ti4+, and one Si4+ atom. In the fifth O2- site, O2- is bonded in a 4-coordinate geometry to two Ca2+, one Ti4+, and one Si4+ atom. In the sixth O2- site, O2- is bonded in a 4-coordinate geometry to two Ca2+, one Ti4+, and one Si4+ atom. In the seventh O2- site, O2- is bonded in a 4-coordinate geometry to two Ca2+, one Ti4+, and one Ge4+ atom. In the eighth O2- site, O2- is bonded in a 4-coordinate geometry to two Ca2+, one Ti4+, and one Ge4+ atom. In the ninth O2- site, O2- is bonded in a 4-coordinate geometry to two Ca2+, one Ti4+, and one Ge4+ atom. In the tenth O2- site, O2- is bonded in a 4-coordinate geometry to two Ca2+, one Ti4+, and one Ge4+ atom. In the eleventh O2- site, O2- is bonded in a 4-coordinate geometry to two Ca2+, one Ti4+, and one Si4+ atom. In the twelfth O2- site, O2- is bonded in a 4-coordinate geometry to two Ca2+, one Ti4+, and one Si4+ atom. In the thirteenth O2- site, O2- is bonded in a 3-coordinate geometry to one Ca2+, one Ti4+, and one Ge4+ atom. In the fourteenth O2- site, O2- is bonded in a 3-coordinate geometry to one Ca2+, one Ti4+, and one Ge4+ atom. In the fifteenth O2- site, O2- is bonded in a 3-coordinate geometry to one Ca2+, one Ti4+, and one Ge4+ atom. In the sixteenth O2- site, O2- is bonded in a 3-coordinate geometry to one Ca2+, one Ti4+, and one Ge4+ atom. In the seventeenth O2- site, O2- is bonded in a 3-coordinate geometry to one Ca2+, one Ti4+, and one Si4+ atom. In the eighteenth O2- site, O2- is bonded in a 3-coordinate geometry to one Ca2+, one Ti4+, and one Si4+ atom. In the nineteenth O2- site, O2- is bonded in a 3-coordinate geometry to one Ca2+, one Ti4+, and one Si4+ atom. In the twentieth O2- site, O2- is bonded in a 3-coordinate geometry to one Ca2+, one Ti4+, and one Si4+ atom. In the twenty-first O2- site, O2- is bonded in a 3-coordinate geometry to one Ca2+, one Ti4+, and one Si4+ atom. In the twenty-second O2- site, O2- is bonded in a 3-coordinate geometry to one Ca2+, one Ti4+, and one Si4+ atom. In the twenty-third O2- site, O2- is bonded in a 3-coordinate geometry to one Ca2+, one Ti4+, and one Si4+ atom. In the twenty-fourth O2- site, O2- is bonded in a 3-coordinate geometry to one Ca2+, one Ti4+, and one Si4+ atom. In the twenty-fifth O2- site, O2- is bonded in a 3-coordinate geometry to one Ca2+ and two Ti4+ atoms. In the twenty-sixth O2

36 MATERIALS SCIENCE↗

Materials Data on CaB6(HO4)3 by Materials Project

CaB6HO12H2 crystallizes in the monoclinic P2_1/c space group. The structure is two-dimensional and consists of eight hydrogen molecules and two CaB6HO12 sheets oriented in the (0, 1, 0) direction. In each CaB6HO12 sheet, Ca is bonded in a 9-coordinate geometry to one H and eight O atoms. The Ca–H bond length is 2.64 Å. There are a spread of Ca–O bond distances ranging from 2.39–2.77 Å. There are six inequivalent B sites. In the first B site, B is bonded in a trigonal planar geometry to three O atoms. There are a spread of B–O bond distances ranging from 1.35–1.39 Å. In the second B site, B is bonded in a trigonal planar geometry to three O atoms. There are a spread of B–O bond distances ranging from 1.36–1.39 Å. In the third B site, B is bonded in a trigonal planar geometry to three O atoms. There are a spread of B–O bond distances ranging from 1.35–1.40 Å. In the fourth B site, B is bonded in a trigonal planar geometry to three O atoms. There are a spread of B–O bond distances ranging from 1.35–1.41 Å. In the fifth B site, B is bonded to four O atoms to form corner-sharing BO4 tetrahedra. There are a spread of B–O bond distances ranging from 1.47–1.49 Å. In the sixth B site, B is bonded to four O atoms to form corner-sharing BO4 tetrahedra. There are a spread of B–O bond distances ranging from 1.45–1.51 Å. H is bonded in a single-bond geometry to one Ca atom. There are twelve inequivalent O sites. In the first O site, O is bonded in a single-bond geometry to one B atom. In the second O site, O is bonded in a bent 120 degrees geometry to two B atoms. In the third O site, O is bonded in a distorted bent 120 degrees geometry to one Ca and two B atoms. In the fourth O site, O is bonded in a distorted bent 120 degrees geometry to one Ca and two B atoms. In the fifth O site, O is bonded in a distorted bent 120 degrees geometry to one Ca and two B atoms. In the sixth O site, O is bonded in a bent 120 degrees geometry to one Ca and two B atoms. In the seventh O site, O is bonded in a distorted bent 120 degrees geometry to one Ca and two B atoms. In the eighth O site, O is bonded in a distorted single-bond geometry to one Ca and one B atom. In the ninth O site, O is bonded in a distorted bent 120 degrees geometry to one Ca and two B atoms. In the tenth O site, O is bonded in a bent 120 degrees geometry to two B atoms. In the eleventh O site, O is bonded in a single-bond geometry to one B atom. In the twelfth O site, O is bonded in a distorted water-like geometry to one Ca and one B atom.

36 MATERIALS SCIENCE↗

Materials Data on Ca2SiO5 by Materials Project

Ca2SiO5 crystallizes in the orthorhombic Pbca space group. The structure is three-dimensional. there are two inequivalent Ca sites. In the first Ca site, Ca is bonded in a 6-coordinate geometry to six O atoms. There are a spread of Ca–O bond distances ranging from 2.37–2.61 Å. In the second Ca site, Ca is bonded in a 2-coordinate geometry to nine O atoms. There are a spread of Ca–O bond distances ranging from 2.24–3.04 Å. Si is bonded in a tetrahedral geometry to four O atoms. There are a spread of Si–O bond distances ranging from 1.60–1.70 Å. There are five inequivalent O sites. In the first O site, O is bonded in a 2-coordinate geometry to three Ca and one Si atom. In the second O site, O is bonded to three Ca and one Si atom to form distorted corner-sharing OCa3Si trigonal pyramids. In the third O site, O is bonded in a distorted single-bond geometry to two equivalent Ca, one Si, and one O atom. The O–O bond length is 1.52 Å. In the fourth O site, O is bonded in a 3-coordinate geometry to three Ca and one O atom. In the fifth O site, O is bonded in a 5-coordinate geometry to four Ca and one Si atom.

36 MATERIALS SCIENCE↗

Materials Data on Ca3Y by Materials Project

Ca3Y is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Ca sites. In the first Ca site, Ca is bonded to eight Ca and four equivalent Y atoms to form CaCa8Y4 cuboctahedra that share corners with twelve equivalent CaCa8Y4 cuboctahedra, edges with eight equivalent YCa12 cuboctahedra, edges with sixteen CaCa8Y4 cuboctahedra, faces with four equivalent YCa12 cuboctahedra, and faces with fourteen CaCa8Y4 cuboctahedra. There are four shorter (3.81 Å) and four longer (3.84 Å) Ca–Ca bond lengths. All Ca–Y bond lengths are 3.84 Å. In the second Ca site, Ca is bonded to eight equivalent Ca and four equivalent Y atoms to form CaCa8Y4 cuboctahedra that share corners with four equivalent CaCa8Y4 cuboctahedra, corners with eight equivalent YCa12 cuboctahedra, edges with twenty-four CaCa8Y4 cuboctahedra, faces with six equivalent YCa12 cuboctahedra, and faces with twelve CaCa8Y4 cuboctahedra. All Ca–Y bond lengths are 3.81 Å. Y is bonded to twelve Ca atoms to form YCa12 cuboctahedra that share corners with four equivalent YCa12 cuboctahedra, corners with eight equivalent CaCa8Y4 cuboctahedra, edges with eight equivalent YCa12 cuboctahedra, edges with sixteen equivalent CaCa8Y4 cuboctahedra, faces with four equivalent YCa12 cuboctahedra, and faces with fourteen CaCa8Y4 cuboctahedra.

36 MATERIALS SCIENCE↗

Materials Data on Ca5Pb3 by Materials Project

Ca5Pb3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. there are three inequivalent Ca sites. In the first Ca site, Ca is bonded in a 6-coordinate geometry to six Pb atoms. There are a spread of Ca–Pb bond distances ranging from 3.39–3.41 Å. In the second Ca site, Ca is bonded in a 5-coordinate geometry to five Pb atoms. There are a spread of Ca–Pb bond distances ranging from 3.26–3.66 Å. In the third Ca site, Ca is bonded in a 5-coordinate geometry to five Pb atoms. There are a spread of Ca–Pb bond distances ranging from 3.27–3.66 Å. There are two inequivalent Pb sites. In the first Pb site, Pb is bonded in a 9-coordinate geometry to nine Ca atoms. In the second Pb site, Pb is bonded in a 9-coordinate geometry to nine Ca atoms.

36 MATERIALS SCIENCE↗

Materials Data on Ca3Y by Materials Project

Ca3Y is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. there are two inequivalent Ca sites. In the first Ca site, Ca is bonded in a distorted body-centered cubic geometry to four equivalent Ca and four equivalent Y atoms. All Ca–Ca bond lengths are 3.68 Å. All Ca–Y bond lengths are 3.68 Å. In the second Ca site, Ca is bonded in a 8-coordinate geometry to eight equivalent Ca and six equivalent Y atoms. All Ca–Y bond lengths are 4.25 Å. Y is bonded in a body-centered cubic geometry to fourteen Ca atoms.

36 MATERIALS SCIENCE↗

Materials Data on Ca3U by Materials Project

Ca3U is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. there are two inequivalent Ca sites. In the first Ca site, Ca is bonded in a distorted body-centered cubic geometry to four equivalent Ca and four equivalent U atoms. All Ca–Ca bond lengths are 3.65 Å. All Ca–U bond lengths are 3.65 Å. In the second Ca site, Ca is bonded in a 8-coordinate geometry to eight equivalent Ca and six equivalent U atoms. All Ca–U bond lengths are 4.21 Å. U is bonded in a distorted body-centered cubic geometry to fourteen Ca atoms.

36 MATERIALS SCIENCE↗

Materials Data on Ca2Mg by Materials Project

Ca2Mg crystallizes in the trigonal R32 space group. The structure is three-dimensional. there are two inequivalent Ca sites. In the first Ca site, Ca is bonded to eight Ca and four equivalent Mg atoms to form a mixture of face, edge, and corner-sharing CaCa8Mg4 cuboctahedra. There are a spread of Ca–Ca bond distances ranging from 3.62–3.71 Å. There are two shorter (3.68 Å) and two longer (3.71 Å) Ca–Mg bond lengths. In the second Ca site, Ca is bonded to six equivalent Ca and six equivalent Mg atoms to form CaCa6Mg6 cuboctahedra that share corners with six equivalent CaCa6Mg6 cuboctahedra, edges with eighteen CaCa8Mg4 cuboctahedra, and faces with twelve equivalent CaCa8Mg4 cuboctahedra. All Ca–Mg bond lengths are 3.68 Å. Mg is bonded in a 9-coordinate geometry to nine Ca atoms.

36 MATERIALS SCIENCE↗

Materials Data on Ca2Al3O8 by Materials Project

Ca2Al3O8 crystallizes in the orthorhombic Cmce space group. The structure is three-dimensional. there are two inequivalent Ca sites. In the first Ca site, Ca is bonded in a 6-coordinate geometry to six O atoms. There are a spread of Ca–O bond distances ranging from 2.23–2.46 Å. In the second Ca site, Ca is bonded in a 6-coordinate geometry to six O atoms. There are a spread of Ca–O bond distances ranging from 2.29–2.73 Å. There are two inequivalent Al sites. In the first Al site, Al is bonded to four O atoms to form corner-sharing AlO4 tetrahedra. There are a spread of Al–O bond distances ranging from 1.76–1.80 Å. In the second Al site, Al is bonded to four O atoms to form corner-sharing AlO4 tetrahedra. There is two shorter (1.77 Å) and two longer (1.78 Å) Al–O bond length. There are five inequivalent O sites. In the first O site, O is bonded in a trigonal planar geometry to one Ca and two equivalent Al atoms. In the second O site, O is bonded in a 4-coordinate geometry to three Ca and one O atom. The O–O bond length is 1.33 Å. In the third O site, O is bonded in a trigonal planar geometry to one Ca and two Al atoms. In the fourth O site, O is bonded in a distorted trigonal planar geometry to one Ca and two Al atoms. In the fifth O site, O is bonded in a distorted trigonal non-coplanar geometry to two Ca and one Al atom.

36 MATERIALS SCIENCE↗

Materials Data on Ca5S3O12F by Materials Project

Ca5S3O12F crystallizes in the hexagonal P6_3/m space group. The structure is three-dimensional. there are two inequivalent Ca sites. In the first Ca site, Ca is bonded to six O and one F atom to form distorted CaO6F pentagonal bipyramids that share corners with six equivalent CaO6F pentagonal bipyramids, corners with four equivalent SO4 tetrahedra, and an edgeedge with one SO4 tetrahedra. There are a spread of Ca–O bond distances ranging from 2.35–2.53 Å. The Ca–F bond length is 2.39 Å. In the second Ca site, Ca is bonded in a 6-coordinate geometry to six O atoms. There are three shorter (2.37 Å) and three longer (2.51 Å) Ca–O bond lengths. S is bonded to four O atoms to form distorted SO4 tetrahedra that share corners with four equivalent CaO6F pentagonal bipyramids and an edgeedge with one CaO6F pentagonal bipyramid. There are a spread of S–O bond distances ranging from 1.54–1.79 Å. There are three inequivalent O sites. In the first O site, O is bonded to three Ca and one S atom to form a mixture of edge and corner-sharing OCa3S tetrahedra. In the second O site, O is bonded to three Ca and one S atom to form a mixture of edge and corner-sharing OCa3S tetrahedra. In the third O site, O is bonded in a 1-coordinate geometry to two equivalent Ca and one S atom. F is bonded in a trigonal planar geometry to three equivalent Ca atoms.

36 MATERIALS SCIENCE↗

Materials Data on Ca3Pm by Materials Project

Ca3Pm is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. there are two inequivalent Ca sites. In the first Ca site, Ca is bonded in a body-centered cubic geometry to four equivalent Ca and four equivalent Pm atoms. All Ca–Ca bond lengths are 3.70 Å. All Ca–Pm bond lengths are 3.70 Å. In the second Ca site, Ca is bonded in a 8-coordinate geometry to eight equivalent Ca and six equivalent Pm atoms. All Ca–Pm bond lengths are 4.27 Å. Pm is bonded in a distorted body-centered cubic geometry to fourteen Ca atoms.

36 MATERIALS SCIENCE↗