Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Cr”

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 1,495 records · Page 83

Materials Data on Cr2AsSe by Materials Project

Cr2AsSe crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. Cr+2.50+ is bonded in a 7-coordinate geometry to one Cr+2.50+, three equivalent As3-, and three equivalent Se2- atoms. The Cr–Cr bond length is 2.22 Å. All Cr–As bond lengths are 2.50 Å. All Cr–Se bond lengths are 2.60 Å. As3- is bonded in a 6-coordinate geometry to six equivalent Cr+2.50+ atoms. Se2- is bonded in a 6-coordinate geometry to six equivalent Cr+2.50+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on LiCr2(PO4)3 by Materials Project

LiCr2(PO4)3 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are four inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded to six O2- atoms to form distorted LiO6 octahedra that share corners with six PO4 tetrahedra. There are a spread of Li–O bond distances ranging from 2.01–2.54 Å. In the second Li1+ site, Li1+ is bonded to six O2- atoms to form distorted LiO6 octahedra that share corners with six PO4 tetrahedra. There are a spread of Li–O bond distances ranging from 2.02–2.54 Å. In the third Li1+ site, Li1+ is bonded in a distorted rectangular see-saw-like geometry to four O2- atoms. There are a spread of Li–O bond distances ranging from 1.88–2.25 Å. In the fourth Li1+ site, Li1+ is bonded in a distorted trigonal non-coplanar geometry to four O2- atoms. There are a spread of Li–O bond distances ranging from 1.84–2.70 Å. There are eight inequivalent Cr4+ sites. In the first Cr4+ site, Cr4+ is bonded to six O2- atoms to form CrO6 octahedra that share corners with six PO4 tetrahedra and an edgeedge with one CrO6 octahedra. There are a spread of Cr–O bond distances ranging from 1.87–2.11 Å. In the second Cr4+ site, Cr4+ is bonded to six O2- atoms to form CrO6 octahedra that share corners with six PO4 tetrahedra and an edgeedge with one CrO6 octahedra. There are a spread of Cr–O bond distances ranging from 1.90–2.08 Å. In the third Cr4+ site, Cr4+ is bonded to six O2- atoms to form CrO6 octahedra that share corners with six PO4 tetrahedra and an edgeedge with one CrO6 octahedra. There are a spread of Cr–O bond distances ranging from 1.88–2.11 Å. In the fourth Cr4+ site, Cr4+ is bonded to six O2- atoms to form CrO6 octahedra that share corners with six PO4 tetrahedra and an edgeedge with one CrO6 octahedra. There are a spread of Cr–O bond distances ranging from 1.87–2.12 Å. In the fifth Cr4+ site, Cr4+ is bonded to six O2- atoms to form CrO6 octahedra that share corners with six PO4 tetrahedra and an edgeedge with one CrO6 octahedra. There are a spread of Cr–O bond distances ranging from 1.90–2.08 Å. In the sixth Cr4+ site, Cr4+ is bonded to six O2- atoms to form CrO6 octahedra that share corners with six PO4 tetrahedra and edges with three CrO6 octahedra. There are a spread of Cr–O bond distances ranging from 1.96–1.98 Å. In the seventh Cr4+ site, Cr4+ is bonded to six O2- atoms to form CrO6 octahedra that share corners with six PO4 tetrahedra and an edgeedge with one CrO6 octahedra. There are a spread of Cr–O bond distances ranging from 1.88–2.12 Å. In the eighth Cr4+ site, Cr4+ is bonded to six O2- atoms to form CrO6 octahedra that share corners with six PO4 tetrahedra and edges with three CrO6 octahedra. There are a spread of Cr–O bond distances ranging from 1.96–1.98 Å. There are twelve inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one LiO6 octahedra and corners with four CrO6 octahedra. The corner-sharing octahedra tilt angles range from 32–58°. There are a spread of P–O bond distances ranging from 1.50–1.61 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one LiO6 octahedra and corners with four CrO6 octahedra. The corner-sharing octahedra tilt angles range from 31–58°. There are a spread of P–O bond distances ranging from 1.50–1.61 Å. In the third P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one LiO6 octahedra and corners with four CrO6 octahedra. The corner-sharing octahedra tilt angles range from 39–60°. There are a spread of P–O bond distances ranging from 1.50–1.61 Å. In the fourth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one LiO6 octahedra and corners with four CrO6 octahedra. The corner-sharing octahedra tilt angles range from 35–59°. There are a spread of P–O bond distances ranging from 1.51–1.61 Å. In the fifth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one LiO6 octahedra and corners with four CrO6 octahedra. The corner-sharing octahedra tilt angles range from 39–59°. There are a spread of P–O bond distances ranging from 1.50–1.61 Å. In the sixth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one LiO6 octahedra and corners with four CrO6 octahedra. The corner-sharing octahedra tilt angles range from 41–59°. There are a spread of P–O bond distances ranging from 1.51–1.60 Å. In the seventh P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one LiO6 octahedra and corners with four CrO6 octahedra. The corner-sharing octahedra tilt angles range from 39–60°. There are a spread of P–O bond distances ranging from 1.50–1.61 Å. In the eighth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one LiO6 octahedra and corners with four CrO6 octahedra. The corner-sharing octahedra tilt angles range from 34–58°. There are a spread of P–O bond distances ranging from 1.51–1.61 Å. In the ninth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one LiO6 octahedra and corners with four CrO6 octahedra. The corner-sharing octahedra tilt angles range from 35–61°. There are a spread of P–O bond distances ranging from 1.51–1.61 Å. In the tenth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one LiO6 octahedra and corners with four CrO6 octahedra. The corner-sharing octahedra tilt angles range from 39–58°. There are a spread of P–O bond distances ranging from 1.51–1.62 Å. In the eleventh P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one LiO6 octahedra and corners with four CrO6 octahedra. The corner-sharing octahedra tilt angles range from 39–58°. There are a spread of P–O bond distances ranging from 1.51–1.62 Å. In the twelfth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one LiO6 octahedra and corners with four CrO6 octahedra. The corner-sharing octahedra tilt angles range from 41–59°. There are a spread of P–O bond distances ranging from 1.50–1.60 Å. There are forty-eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 150 degrees geometry to one Li1+ and one P5+ atom. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to one Cr4+ and one P5+ atom. In the third O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Cr4+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to two Li1+ and one P5+ atom. In the fifth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Cr4+ and one P5+ atom. In the sixth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Cr4+ and one P5+ atom. In the seventh O2- site, O2- is bonded in a bent 150 degrees geometry to one Li1+ and one P5+ atom. In the eighth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Cr4+ and one P5+ atom. In the ninth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Cr4+ and one P5+ atom. In the tenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Cr4+ and one P5+ atom. In the eleventh O2- site, O2- is bonded in a 3-coordinate geometry to two Cr4+ and one P5+ atom. In the twelfth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Cr4+ and one P5+ atom. In the thirteenth O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Cr4+, and one P5+ atom. In the fourteenth O2- site, O2- is bonded in a 3-coordinate geometry to two Cr4+ and one P5+ atom. In the fifteenth O2- site, O2- is bonded in a 3-coordinate geometry to two Cr4+ and one P5+ atom. In the sixteenth O2- site, O2- is bonded in a bent 150 degrees geometry to one Li1+ and one P5+ atom. In the seventeenth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Cr4+ and one P5+ atom. In the eighteenth O2- site, O2- is bonded in a 2-coordinate geometry to two Li1+ and one P5+ atom. In the nineteenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Cr4+ and one P5+ atom. In the twentieth O2- site, O2- is bonded in a bent 150 degrees geometry to one Li1+ and one P5+ atom. In the twenty-first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Cr4+ and one P5+ atom. In the twenty-second O2- site, O2- is bonded in a 2-coordinate geometry to two Li1+ and one P5+ atom. In the twenty-third O2- site, O2- is bonded in a 1-coordinate geometry to two Li1+ and one P5+ atom. In the twenty-fourth O2- site, O2- is bonded in a 3-coordinate geometry to two Cr4+ and one P5+ atom. In the twenty-fifth O2- site, O2- is bonded in a 3-coordinate geometry to two Cr4+ and one P5+ atom. In the twenty-sixth O2- site, O2- is bonded in a 3-coordinate geometry to two Cr4+ and one P5+ atom. In the twenty-seventh O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Cr4+, and one P5+ atom. In the twenty-eighth O2- site, O2- is bonded in a bent 150 degrees geometry to one Li1+ and one P5+ atom. In the twenty-ninth O2- site, O2- is bonded in a bent 150 degrees geometry to one Cr4+ and one P5+ atom. In the thirtieth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Cr4+ and one P5+ atom. In the thirty-first O2- site, O2- is bonded in a 1-coordinate geometry to two Li1+ and one P5+ atom. In the thirty-second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Cr4+ and one P5+ atom. In the thirty-third O2- site, O2- is bonded in a 3-coordinate geometry to two Cr4+ and one P5+ atom. In the thirty-fourth O2- site, O2- is bonded in a bent 150 degrees geometry to one Cr4+ and one P5+ atom. In the thirty-fifth O2- site, O2- is bonded in a 2-coordinate geometry to two Li1+ and one P5+ atom. In the thirty-sixth O2- site, O2- is bonded in a bent 150 degrees geometry to one Cr4+ and one P5+ atom. In the thirty-seventh O2- site, O2- is bonded in a 3-coordinate geometry to two Cr4+ and one P5+ atom. In the thirty-eighth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Cr4+ and one P5+ atom. In the thirty-ninth O2- site, O2- is bonded in a 3-coordinate geometry to two Cr4+ and one P5+ atom. In the fortieth O2- site, O2- is bonded in a 3-coordinate geometry to two Cr4+ and one P5+ atom. In the forty-first O2- site, O2- is bonded in a 3-coordinate geometry to two Cr4+ and one P5+ atom. In the forty-second O2- site, O2- is bonded in a bent 150 degrees geometry to one Cr4+ and one P5+ atom. In the forty-third O2- site, O2- is bonded in a bent 150 degrees geometry to one Li1+ and one P5+ atom. In the forty-fourth O2- site, O2- is bonded in a bent 150 degrees geometry to one Cr4+ and one P5+ atom. In the forty-fifth O2- site, O2- is bonded in a bent 150 degrees geometry to one Cr4+ and one P5+ atom. In the forty-sixth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Cr4+ and one P5+ atom. In the forty-seventh O2- site, O2- is bonded in a bent 150 degrees geometry to one Cr4+ and one P5+ atom. In the forty-eighth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Cr4+ and one P5+ atom.

36 MATERIALS SCIENCE↗

Materials Data on Li2Cr2(PO4)3 by Materials Project

Li2Cr2(PO4)3 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Li1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Li–O bond distances ranging from 1.98–2.11 Å. Cr+3.50+ is bonded to six O2- atoms to form CrO6 octahedra that share corners with six PO4 tetrahedra. There are a spread of Cr–O bond distances ranging from 1.93–2.01 Å. There are two inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four equivalent CrO6 octahedra. The corner-sharing octahedra tilt angles range from 26–39°. There is two shorter (1.54 Å) and two longer (1.55 Å) P–O bond length. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four equivalent CrO6 octahedra. The corner-sharing octahedra tilt angles range from 20–43°. There are a spread of P–O bond distances ranging from 1.52–1.56 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+, one Cr+3.50+, and one P5+ atom. In the second O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Li1+, one Cr+3.50+, and one P5+ atom. In the third O2- site, O2- is bonded in a bent 150 degrees geometry to one Cr+3.50+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a bent 150 degrees geometry to one Cr+3.50+ and one P5+ atom. In the fifth O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+, one Cr+3.50+, and one P5+ atom. In the sixth O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+, one Cr+3.50+, and one P5+ atom.

36 MATERIALS SCIENCE↗

Materials Data on Li2V3Cr2O12 by Materials Project

Li2V3Cr2O12 crystallizes in the orthorhombic Pbcn space group. The structure is three-dimensional. Li1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Li–O bond distances ranging from 1.97–2.05 Å. There are two inequivalent V5+ sites. In the first V5+ site, V5+ is bonded to four O2- atoms to form VO4 tetrahedra that share corners with four equivalent CrO6 octahedra. The corner-sharing octahedra tilt angles range from 21–36°. There is two shorter (1.72 Å) and two longer (1.76 Å) V–O bond length. In the second V5+ site, V5+ is bonded to four O2- atoms to form VO4 tetrahedra that share corners with four equivalent CrO6 octahedra. The corner-sharing octahedra tilt angles range from 13–43°. There are a spread of V–O bond distances ranging from 1.71–1.76 Å. Cr+3.50+ is bonded to six O2- atoms to form CrO6 octahedra that share corners with six VO4 tetrahedra. There are a spread of Cr–O bond distances ranging from 1.94–2.00 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to one Li1+, one V5+, and one Cr+3.50+ atom. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to one Li1+, one V5+, and one Cr+3.50+ atom. In the third O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+, one V5+, and one Cr+3.50+ atom. In the fourth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Li1+, one V5+, and one Cr+3.50+ atom. In the fifth O2- site, O2- is bonded in a linear geometry to one V5+ and one Cr+3.50+ atom. In the sixth O2- site, O2- is bonded in a bent 150 degrees geometry to one V5+ and one Cr+3.50+ atom.

36 MATERIALS SCIENCE↗

Materials Data on Li24TiCr11O36 by Materials Project

Li24TiCr11O36 is beta Polonium-derived structured and crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are twenty-four inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share a cornercorner with one TiO6 octahedra, corners with two LiO6 octahedra, corners with three CrO6 octahedra, an edgeedge with one TiO6 octahedra, edges with three CrO6 octahedra, and edges with eight LiO6 octahedra. The corner-sharing octahedra tilt angles range from 7–10°. There are a spread of Li–O bond distances ranging from 2.05–2.25 Å. In the second Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with six LiO6 octahedra, edges with two equivalent TiO6 octahedra, edges with four CrO6 octahedra, and edges with six LiO6 octahedra. The corner-sharing octahedra tilt angles range from 8–9°. There are a spread of Li–O bond distances ranging from 2.08–2.15 Å. In the third Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share a cornercorner with one TiO6 octahedra, corners with two LiO6 octahedra, corners with three CrO6 octahedra, edges with four CrO6 octahedra, and edges with eight LiO6 octahedra. The corner-sharing octahedra tilt angles range from 8–9°. There are a spread of Li–O bond distances ranging from 2.06–2.22 Å. In the fourth Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with two LiO6 octahedra, corners with four CrO6 octahedra, an edgeedge with one TiO6 octahedra, edges with three CrO6 octahedra, and edges with eight LiO6 octahedra. The corner-sharing octahedra tilt angles range from 6–9°. There are a spread of Li–O bond distances ranging from 2.06–2.20 Å. In the fifth Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share a cornercorner with one TiO6 octahedra, corners with two LiO6 octahedra, corners with three CrO6 octahedra, edges with four CrO6 octahedra, and edges with eight LiO6 octahedra. The corner-sharing octahedra tilt angles range from 8–9°. There are a spread of Li–O bond distances ranging from 2.07–2.21 Å. In the sixth Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with six LiO6 octahedra, edges with six LiO6 octahedra, and edges with six CrO6 octahedra. The corner-sharing octahedra tilt angles range from 8–9°. There are a spread of Li–O bond distances ranging from 2.08–2.15 Å. In the seventh Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with two LiO6 octahedra, corners with four CrO6 octahedra, an edgeedge with one TiO6 octahedra, edges with three CrO6 octahedra, and edges with eight LiO6 octahedra. The corner-sharing octahedra tilt angles range from 6–9°. There are a spread of Li–O bond distances ranging from 2.06–2.21 Å. In the eighth Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with two LiO6 octahedra, corners with four CrO6 octahedra, edges with four CrO6 octahedra, and edges with eight LiO6 octahedra. The corner-sharing octahedra tilt angles range from 8–9°. There are a spread of Li–O bond distances ranging from 2.06–2.22 Å. In the ninth Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with two LiO6 octahedra, corners with four CrO6 octahedra, edges with four CrO6 octahedra, and edges with eight LiO6 octahedra. The corner-sharing octahedra tilt angles range from 8–9°. There are a spread of Li–O bond distances ranging from 2.06–2.22 Å. In the tenth Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with six LiO6 octahedra, edges with six LiO6 octahedra, and edges with six CrO6 octahedra. The corner-sharing octahedra tilt angles range from 8–10°. There are a spread of Li–O bond distances ranging from 2.09–2.16 Å. In the eleventh Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with two LiO6 octahedra, corners with four CrO6 octahedra, edges with four CrO6 octahedra, and edges with eight LiO6 octahedra. The corner-sharing octahedra tilt angles range from 6–9°. There are a spread of Li–O bond distances ranging from 2.06–2.21 Å. In the twelfth Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with two LiO6 octahedra, corners with four CrO6 octahedra, edges with four CrO6 octahedra, and edges with eight LiO6 octahedra. The corner-sharing octahedra tilt angles range from 8–9°. There are a spread of Li–O bond distances ranging from 2.07–2.21 Å. In the thirteenth Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with two LiO6 octahedra, corners with four CrO6 octahedra, an edgeedge with one TiO6 octahedra, edges with three CrO6 octahedra, and edges with eight LiO6 octahedra. The corner-sharing octahedra tilt angles range from 7–9°. There are a spread of Li–O bond distances ranging from 2.07–2.27 Å. In the fourteenth Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share a cornercorner with one TiO6 octahedra, corners with two LiO6 octahedra, corners with three CrO6 octahedra, edges with four CrO6 octahedra, and edges with eight LiO6 octahedra. The corner-sharing octahedra tilt angles range from 6–9°. There are a spread of Li–O bond distances ranging from 2.06–2.22 Å. In the fifteenth Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with six LiO6 octahedra, edges with six LiO6 octahedra, and edges with six CrO6 octahedra. The corner-sharing octahedra tilt angles range from 8–9°. There are a spread of Li–O bond distances ranging from 2.07–2.15 Å. In the sixteenth Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with two LiO6 octahedra, corners with four CrO6 octahedra, edges with four CrO6 octahedra, and edges with eight LiO6 octahedra. The corner-sharing octahedra tilt angles range from 8–9°. There are a spread of Li–O bond distances ranging from 2.06–2.22 Å. In the seventeenth Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with two LiO6 octahedra, corners with four CrO6 octahedra, edges with four CrO6 octahedra, and edges with eight LiO6 octahedra. The corner-sharing octahedra tilt angles range from 6–9°. There are a spread of Li–O bond distances ranging from 2.06–2.20 Å. In the eighteenth Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with two LiO6 octahedra, corners with four CrO6 octahedra, edges with four CrO6 octahedra, and edges with eight LiO6 octahedra. The corner-sharing octahedra tilt angles range from 8–9°. There are a spread of Li–O bond distances ranging from 2.05–2.21 Å. In the nineteenth Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share a cornercorner with one TiO6 octahedra, corners with two LiO6 octahedra, corners with three CrO6 octahedra, an edgeedge with one TiO6 octahedra, edges with three CrO6 octahedra, and edges with eight LiO6 octahedra. The corner-sharing octahedra tilt angles range from 8–10°. There are a spread of Li–O bond distances ranging from 2.05–2.24 Å. In the twentieth Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share a cornercorner with one TiO6 octahedra, corners with two LiO6 octahedra, corners with three CrO6 octahedra, edges with four CrO6 octahedra, and edges with eight LiO6 octahedra. The corner-sharing octahedra tilt angles range from 6–9°. There are a spread of Li–O bond distances ranging from 2.06–2.22 Å. In the twenty-first Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with two LiO6 octahedra, corners with four CrO6 octahedra, edges with four CrO6 octahedra, and edges with eight LiO6 octahedra. The corner-sharing octahedra tilt angles range from 8–9°. There are a spread of Li–O bond distances ranging from 2.06–2.21 Å. In the twenty-second Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with six LiO6 octahedra, edges with six LiO6 octahedra, and edges with six CrO6 octahedra. The corner-sharing octahedra tilt angles range from 8–10°. There are a spread of Li–O bond distances ranging from 2.09–2.14 Å. In the twenty-third Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with six LiO6 octahedra, an edgeedge with one TiO6 octahedra, edges with five CrO6 octahedra, and edges with six LiO6 octahedra. The corner-sharing octahedra tilt angles range from 8–9°. There are a spread of Li–O bond distances ranging from 2.09–2.15 Å. In the twenty-fourth Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with two LiO6 octahedra, corners with four CrO6 octahedra, an edgeedge with one TiO6 octahedra, edges with three CrO6 octahedra, and edges with eight LiO6 octahedra. The corner-sharing octahedra tilt angles range from 7–9°. There are a spread of Li–O bond distances ranging from 2.06–2.26 Å. Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with six LiO6 octahedra, edges with three CrO6 octahedra, and edges with nine LiO6 octahedra. The corner-sharing octahedra tilt angles range from 7–9°. There are a spread of Ti–O bond distances ranging from 1.95–2.01 Å. There are eleven inequivalent Cr4+ sites. In the first Cr4+ site, Cr4+ is bonded to six O2- atoms to form CrO6 octahedra that share corners with six LiO6 octahedra, edges with three CrO6 octahedra, and edges with nine LiO6 octahedra. The corner-sharing octahedra tilt angles range from 6–9°. There are a spread of Cr–O bond distances ranging from 1.88–2.00 Å. In the second Cr4+ site, Cr4+ is bonded to six O2- atoms to form CrO6 octahedra that share corners with six LiO6 octahedra, edges with three CrO6 octahedra, and edges with nine LiO6 octahedra. The corner-sharing octahedra tilt angles range from 7–9°. There are a spread of Cr–O bond distances ranging from 1.89–2.00 Å. In the third Cr4+ site, Cr4+ is bonded to six O2- atoms to form CrO6 octahedra that share corners with six LiO6 octahedra, edges with three CrO6 octahedra, and edges with nine LiO6 octahedra. The corner-sharing octahedra tilt angles range from 7–9°. There are a spread of Cr–O bond distances ranging from 1.88–2.00 Å. In the fourth Cr4+ site, Cr4+ is bonded to six O2- atoms to form CrO6 octahedra that share corners with six LiO6 octahedra, an edgeedge with one TiO6 octahedra, edges with two equivalent CrO6 octahedra, and edges with nine LiO6 octahedra. The corner-sharing octahedra tilt angles range from 6–8°. There are a spread of Cr–O bond distances ranging from 1.88–2.00 Å. In the fifth Cr4+ site, Cr4+ is bonded to six O2- atoms to form CrO6 octahedra that share corners with six LiO6 octahedra, edges with three CrO6 octahedra, and edges with nine LiO6 octahedra. The corner-sharing octahedra tilt angles range from 6–9°. There are a spread of Cr–O bond distances ranging from 1.88–2.00 Å. In the sixth Cr4+ site, Cr4+ is bonded to six O2- atoms to form CrO6 octahedra that share corners with six LiO6 octahedra, edges with three CrO6 octahedra, and edges with nine LiO6 octahedra. The corner-sharing octahedra tilt angles range from 6–9°. There are a spread of Cr–O bond distances ranging from 1.89–2.00 Å. In the seventh Cr4+ site, Cr4+ is bonded to six O2- atoms to form CrO6 octahedra that share corners with six LiO6 octahedra, edges with three CrO6 octahedra, and edges with nine LiO6 octahedra. The corner-sharing octahedra tilt angles range from 7–9°. There are a spread of Cr–O bond distances ranging from 1.88–2.00 Å. In the eighth Cr4+ site, Cr4+ is bonded to six O2- atoms to form CrO6 octahedra that share corners with six LiO6 octahedra, an edgeedge with one CrO6 octahedra, edges with two equivalent TiO6 octahedra, and edges with nine LiO6 octahedra. The corner-sharing octahedra tilt angles range from 7–8°. There are a spread of Cr–O bon

36 MATERIALS SCIENCE↗

Materials Data on Cr2S3 by Materials Project

Cr2S3 crystallizes in the trigonal P3 space group. The structure is three-dimensional. there are eight inequivalent Cr3+ sites. In the first Cr3+ site, Cr3+ is bonded to six S2- atoms to form a mixture of corner and face-sharing CrS6 octahedra. The corner-sharing octahedra tilt angles range from 46–50°. There are three shorter (2.37 Å) and three longer (2.43 Å) Cr–S bond lengths. In the second Cr3+ site, Cr3+ is bonded to six S2- atoms to form a mixture of corner, edge, and face-sharing CrS6 octahedra. The corner-sharing octahedral tilt angles are 50°. There are three shorter (2.38 Å) and three longer (2.41 Å) Cr–S bond lengths. In the third Cr3+ site, Cr3+ is bonded to six S2- atoms to form a mixture of corner and edge-sharing CrS6 octahedra. The corner-sharing octahedral tilt angles are 46°. There are three shorter (2.38 Å) and three longer (2.42 Å) Cr–S bond lengths. In the fourth Cr3+ site, Cr3+ is bonded to six S2- atoms to form a mixture of corner and face-sharing CrS6 octahedra. The corner-sharing octahedra tilt angles range from 46–50°. All Cr–S bond lengths are 2.40 Å. In the fifth Cr3+ site, Cr3+ is bonded to six S2- atoms to form a mixture of corner, edge, and face-sharing CrS6 octahedra. The corner-sharing octahedral tilt angles are 50°. All Cr–S bond lengths are 2.38 Å. In the sixth Cr3+ site, Cr3+ is bonded to six S2- atoms to form a mixture of corner, edge, and face-sharing CrS6 octahedra. The corner-sharing octahedral tilt angles are 49°. There are three shorter (2.38 Å) and three longer (2.39 Å) Cr–S bond lengths. In the seventh Cr3+ site, Cr3+ is bonded to six S2- atoms to form a mixture of corner and edge-sharing CrS6 octahedra. The corner-sharing octahedra tilt angles range from 47–48°. All Cr–S bond lengths are 2.38 Å. In the eighth Cr3+ site, Cr3+ is bonded to six S2- atoms to form a mixture of corner, edge, and face-sharing CrS6 octahedra. The corner-sharing octahedral tilt angles are 48°. All Cr–S bond lengths are 2.41 Å. There are four inequivalent S2- sites. In the first S2- site, S2- is bonded in a rectangular see-saw-like geometry to four Cr3+ atoms. In the second S2- site, S2- is bonded in a rectangular see-saw-like geometry to four Cr3+ atoms. In the third S2- site, S2- is bonded in a rectangular see-saw-like geometry to four Cr3+ atoms. In the fourth S2- site, S2- is bonded in a rectangular see-saw-like geometry to four Cr3+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on CrN2 by Materials Project

CrN2 is Low Tridymite-like structured and crystallizes in the monoclinic P2_1/m space group. The structure is three-dimensional. there are eight inequivalent Cr6+ sites. In the first Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There are a spread of Cr–N bond distances ranging from 1.72–1.74 Å. In the second Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There are a spread of Cr–N bond distances ranging from 1.70–1.75 Å. In the third Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There are a spread of Cr–N bond distances ranging from 1.72–1.74 Å. In the fourth Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There are a spread of Cr–N bond distances ranging from 1.72–1.74 Å. In the fifth Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There are a spread of Cr–N bond distances ranging from 1.71–1.74 Å. In the sixth Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There are a spread of Cr–N bond distances ranging from 1.70–1.75 Å. In the seventh Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There is three shorter (1.72 Å) and one longer (1.75 Å) Cr–N bond length. In the eighth Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There is one shorter (1.72 Å) and three longer (1.73 Å) Cr–N bond length. There are seventeen inequivalent N3- sites. In the first N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms. In the second N3- site, N3- is bonded in a linear geometry to two Cr6+ atoms. In the third N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms. In the fourth N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms. In the fifth N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms. In the sixth N3- site, N3- is bonded in a linear geometry to two Cr6+ atoms. In the seventh N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms. In the eighth N3- site, N3- is bonded in a bent 150 degrees geometry to two equivalent Cr6+ atoms. In the ninth N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms. In the tenth N3- site, N3- is bonded in a linear geometry to two Cr6+ atoms. In the eleventh N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms. In the twelfth N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms. In the thirteenth N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms. In the fourteenth N3- site, N3- is bonded in a bent 150 degrees geometry to two equivalent Cr6+ atoms. In the fifteenth N3- site, N3- is bonded in a linear geometry to two Cr6+ atoms. In the sixteenth N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms. In the seventeenth N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on SrLa3Mn2Cr2O12 by Materials Project

SrLa3Cr2Mn2O12 is Orthorhombic Perovskite-derived structured and crystallizes in the monoclinic P2 space group. The structure is three-dimensional. Sr2+ is bonded in a 12-coordinate geometry to twelve O2- atoms. There are a spread of Sr–O bond distances ranging from 2.52–3.18 Å. There are three inequivalent La3+ sites. In the first La3+ site, La3+ is bonded in a 3-coordinate geometry to nine O2- atoms. There are a spread of La–O bond distances ranging from 2.44–2.76 Å. In the second La3+ site, La3+ is bonded in a 3-coordinate geometry to nine O2- atoms. There are a spread of La–O bond distances ranging from 2.42–2.82 Å. In the third La3+ site, La3+ is bonded in a 3-coordinate geometry to nine O2- atoms. There are a spread of La–O bond distances ranging from 2.44–2.78 Å. Cr+4.50+ is bonded to six O2- atoms to form CrO6 octahedra that share corners with two equivalent CrO6 octahedra and corners with four equivalent MnO6 octahedra. The corner-sharing octahedra tilt angles range from 15–22°. There are a spread of Cr–O bond distances ranging from 2.00–2.03 Å. Mn2+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with two equivalent MnO6 octahedra and corners with four equivalent CrO6 octahedra. The corner-sharing octahedra tilt angles range from 15–22°. There are a spread of Mn–O bond distances ranging from 1.94–2.03 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to one Sr2+, three La3+, one Cr+4.50+, and one Mn2+ atom. In the second O2- site, O2- is bonded in a 5-coordinate geometry to one Sr2+, two La3+, one Cr+4.50+, and one Mn2+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Sr2+, two equivalent La3+, and two equivalent Mn2+ atoms. In the fourth O2- site, O2- is bonded in a 5-coordinate geometry to three La3+ and two equivalent Cr+4.50+ atoms. In the fifth O2- site, O2- is bonded in a 5-coordinate geometry to one Sr2+, two La3+, one Cr+4.50+, and one Mn2+ atom. In the sixth O2- site, O2- is bonded in a 5-coordinate geometry to one Sr2+, two La3+, one Cr+4.50+, and one Mn2+ atom. In the seventh O2- site, O2- is bonded in a 5-coordinate geometry to three La3+ and two equivalent Mn2+ atoms. In the eighth O2- site, O2- is bonded in a 5-coordinate geometry to two equivalent Sr2+, one La3+, and two equivalent Cr+4.50+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on UCrCo by Materials Project

UCrCo crystallizes in the orthorhombic Imma space group. The structure is three-dimensional. U is bonded in a 12-coordinate geometry to two equivalent U, six equivalent Cr, and six equivalent Co atoms. Both U–U bond lengths are 2.76 Å. There are four shorter (2.89 Å) and two longer (3.19 Å) U–Cr bond lengths. There are four shorter (2.80 Å) and two longer (2.99 Å) U–Co bond lengths. Cr is bonded to six equivalent U, two equivalent Cr, and four equivalent Co atoms to form distorted CrU6Cr2Co4 cuboctahedra that share corners with eight equivalent CoU6Cr4Co2 cuboctahedra, corners with ten equivalent CrU6Cr2Co4 cuboctahedra, edges with six equivalent CrU6Cr2Co4 cuboctahedra, faces with six equivalent CrU6Cr2Co4 cuboctahedra, and faces with twelve equivalent CoU6Cr4Co2 cuboctahedra. Both Cr–Cr bond lengths are 2.24 Å. All Cr–Co bond lengths are 2.55 Å. Co is bonded to six equivalent U, four equivalent Cr, and two equivalent Co atoms to form CoU6Cr4Co2 cuboctahedra that share corners with eight equivalent CrU6Cr2Co4 cuboctahedra, corners with ten equivalent CoU6Cr4Co2 cuboctahedra, edges with six equivalent CoU6Cr4Co2 cuboctahedra, faces with six equivalent CoU6Cr4Co2 cuboctahedra, and faces with twelve equivalent CrU6Cr2Co4 cuboctahedra. Both Co–Co bond lengths are 2.54 Å.

36 MATERIALS SCIENCE↗

Materials Data on ZrCrCu by Materials Project

CuCrZr crystallizes in the orthorhombic Imma space group. The structure is three-dimensional. Zr is bonded in a 12-coordinate geometry to four equivalent Zr, six equivalent Cr, and six equivalent Cu atoms. There are two shorter (3.08 Å) and two longer (3.09 Å) Zr–Zr bond lengths. There are two shorter (2.96 Å) and four longer (2.99 Å) Zr–Cr bond lengths. There are four shorter (2.83 Å) and two longer (3.10 Å) Zr–Cu bond lengths. Cr is bonded to six equivalent Zr, two equivalent Cr, and four equivalent Cu atoms to form CrZr6Cr2Cu4 cuboctahedra that share corners with eight equivalent CuZr6Cr4Cu2 cuboctahedra, corners with ten equivalent CrZr6Cr2Cu4 cuboctahedra, edges with six equivalent CrZr6Cr2Cu4 cuboctahedra, faces with six equivalent CrZr6Cr2Cu4 cuboctahedra, and faces with twelve equivalent CuZr6Cr4Cu2 cuboctahedra. Both Cr–Cr bond lengths are 2.37 Å. All Cr–Cu bond lengths are 2.54 Å. Cu is bonded to six equivalent Zr, four equivalent Cr, and two equivalent Cu atoms to form CuZr6Cr4Cu2 cuboctahedra that share corners with eight equivalent CrZr6Cr2Cu4 cuboctahedra, corners with ten equivalent CuZr6Cr4Cu2 cuboctahedra, edges with six equivalent CuZr6Cr4Cu2 cuboctahedra, faces with six equivalent CuZr6Cr4Cu2 cuboctahedra, and faces with twelve equivalent CrZr6Cr2Cu4 cuboctahedra. Both Cu–Cu bond lengths are 2.57 Å.

36 MATERIALS SCIENCE↗

Materials Data on ZrCrW by Materials Project

ZrWCr crystallizes in the orthorhombic Imma space group. The structure is three-dimensional. Zr is bonded in a 12-coordinate geometry to four equivalent Zr, six equivalent W, and six equivalent Cr atoms. There are two shorter (3.20 Å) and two longer (3.23 Å) Zr–Zr bond lengths. There are four shorter (3.06 Å) and two longer (3.08 Å) Zr–W bond lengths. There are two shorter (3.04 Å) and four longer (3.11 Å) Zr–Cr bond lengths. W is bonded to six equivalent Zr, two equivalent W, and four equivalent Cr atoms to form distorted WZr6Cr4W2 cuboctahedra that share corners with eight equivalent CrZr6Cr2W4 cuboctahedra, corners with ten equivalent WZr6Cr4W2 cuboctahedra, edges with six equivalent WZr6Cr4W2 cuboctahedra, faces with six equivalent WZr6Cr4W2 cuboctahedra, and faces with twelve equivalent CrZr6Cr2W4 cuboctahedra. Both W–W bond lengths are 2.67 Å. All W–Cr bond lengths are 2.62 Å. Cr is bonded to six equivalent Zr, four equivalent W, and two equivalent Cr atoms to form distorted CrZr6Cr2W4 cuboctahedra that share corners with eight equivalent WZr6Cr4W2 cuboctahedra, corners with ten equivalent CrZr6Cr2W4 cuboctahedra, edges with six equivalent CrZr6Cr2W4 cuboctahedra, faces with six equivalent CrZr6Cr2W4 cuboctahedra, and faces with twelve equivalent WZr6Cr4W2 cuboctahedra. Both Cr–Cr bond lengths are 2.60 Å.

36 MATERIALS SCIENCE↗

Materials Data on CrAsO6 by Materials Project

CrAsO6 crystallizes in the orthorhombic Pbca space group. The structure is three-dimensional. Cr is bonded to six O atoms to form distorted CrO6 octahedra that share corners with four equivalent AsO4 tetrahedra. There are a spread of Cr–O bond distances ranging from 1.59–2.14 Å. As is bonded to four O atoms to form AsO4 tetrahedra that share corners with four equivalent CrO6 octahedra. The corner-sharing octahedra tilt angles range from 41–53°. All As–O bond lengths are 1.73 Å. There are six inequivalent O sites. In the first O site, O is bonded in a distorted bent 150 degrees geometry to one Cr and one As atom. In the second O site, O is bonded in a single-bond geometry to one Cr atom. In the third O site, O is bonded in a bent 120 degrees geometry to one Cr and one As atom. In the fourth O site, O is bonded in a single-bond geometry to one Cr atom. In the fifth O site, O is bonded in a bent 120 degrees geometry to one Cr and one As atom. In the sixth O site, O is bonded in a bent 120 degrees geometry to one Cr and one As atom.

36 MATERIALS SCIENCE↗

Materials Data on SrLiTi3Cr2O11 by Materials Project

LiSrTi3Cr2O11 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with four equivalent CrO6 octahedra, corners with six TiO6 octahedra, and an edgeedge with one SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 55–62°. There are a spread of Li–O bond distances ranging from 1.93–2.02 Å. Sr2+ is bonded to twelve O2- atoms to form distorted SrO12 cuboctahedra that share corners with two equivalent SrO12 cuboctahedra, corners with three TiO6 octahedra, corners with four equivalent CrO6 octahedra, an edgeedge with one TiO6 octahedra, edges with two equivalent CrO6 octahedra, an edgeedge with one LiO4 tetrahedra, faces with two equivalent SrO12 cuboctahedra, and faces with six TiO6 octahedra. The corner-sharing octahedra tilt angles range from 28–48°. There are a spread of Sr–O bond distances ranging from 2.67–3.13 Å. There are three inequivalent Ti4+ sites. In the first Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with three equivalent TiO6 octahedra, corners with three equivalent LiO4 tetrahedra, an edgeedge with one TiO6 octahedra, edges with two equivalent CrO6 octahedra, and faces with three equivalent SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 13–19°. There are a spread of Ti–O bond distances ranging from 1.94–2.03 Å. In the second Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share a cornercorner with one SrO12 cuboctahedra, corners with two equivalent CrO6 octahedra, corners with five TiO6 octahedra, edges with two equivalent CrO6 octahedra, and faces with three equivalent SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 13–53°. There are a spread of Ti–O bond distances ranging from 1.91–2.10 Å. In the third Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with two equivalent SrO12 cuboctahedra, corners with two equivalent TiO6 octahedra, corners with two equivalent CrO6 octahedra, corners with three equivalent LiO4 tetrahedra, an edgeedge with one SrO12 cuboctahedra, an edgeedge with one TiO6 octahedra, and edges with two equivalent CrO6 octahedra. The corner-sharing octahedra tilt angles range from 49–51°. There are a spread of Ti–O bond distances ranging from 1.88–2.19 Å. Cr+3.50+ is bonded to six O2- atoms to form CrO6 octahedra that share corners with two equivalent SrO12 cuboctahedra, corners with two TiO6 octahedra, corners with two equivalent LiO4 tetrahedra, an edgeedge with one SrO12 cuboctahedra, edges with two equivalent CrO6 octahedra, and edges with three TiO6 octahedra. The corner-sharing octahedra tilt angles range from 49–53°. There are a spread of Cr–O bond distances ranging from 1.94–2.01 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to one Li1+, one Ti4+, and two equivalent Cr+3.50+ atoms. In the second O2- site, O2- is bonded in a 4-coordinate geometry to one Sr2+, two Ti4+, and one Cr+3.50+ atom. In the third O2- site, O2- is bonded in a 4-coordinate geometry to one Li1+, one Sr2+, and two Ti4+ atoms. In the fourth O2- site, O2- is bonded in a distorted tetrahedral geometry to one Li1+, one Ti4+, and two equivalent Cr+3.50+ atoms. In the fifth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Ti4+ and two equivalent Cr+3.50+ atoms. In the sixth O2- site, O2- is bonded in a distorted T-shaped geometry to two equivalent Sr2+, two Ti4+, and one Cr+3.50+ atom. In the seventh O2- site, O2- is bonded in a 4-coordinate geometry to one Sr2+, one Ti4+, and two equivalent Cr+3.50+ atoms. In the eighth O2- site, O2- is bonded in a 2-coordinate geometry to three equivalent Sr2+ and two Ti4+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on AlCr6Si by Materials Project

Cr6AlSi crystallizes in the cubic Pm-3 space group. The structure is three-dimensional. Cr is bonded in a 6-coordinate geometry to two equivalent Cr, two equivalent Al, and two equivalent Si atoms. There are one shorter (2.24 Å) and one longer (2.32 Å) Cr–Cr bond lengths. Both Cr–Al bond lengths are 2.56 Å. Both Cr–Si bond lengths are 2.54 Å. Al is bonded to twelve equivalent Cr atoms to form AlCr12 cuboctahedra that share edges with six equivalent AlCr12 cuboctahedra and faces with eight equivalent SiCr12 cuboctahedra. Si is bonded to twelve equivalent Cr atoms to form SiCr12 cuboctahedra that share edges with six equivalent SiCr12 cuboctahedra and faces with eight equivalent AlCr12 cuboctahedra.

36 MATERIALS SCIENCE↗

Materials Data on Mg5Cr(Si2O9)2 by Materials Project

Mg2CrO6Mg3Si4O12 crystallizes in the triclinic P1 space group. The structure is two-dimensional and consists of two Mg2CrO6 sheets oriented in the (0, 0, 1) direction and two Mg3Si4O12 sheets oriented in the (0, 0, 1) direction. In each Mg2CrO6 sheet, there are two inequivalent Mg sites. In the first Mg site, Mg is bonded to six O atoms to form distorted edge-sharing MgO6 octahedra. There are a spread of Mg–O bond distances ranging from 2.01–2.20 Å. In the second Mg site, Mg is bonded to six O atoms to form distorted edge-sharing MgO6 octahedra. There are a spread of Mg–O bond distances ranging from 2.02–2.21 Å. Cr is bonded in a 6-coordinate geometry to six O atoms. There are a spread of Cr–O bond distances ranging from 1.69–2.11 Å. There are six inequivalent O sites. In the first O site, O is bonded in a 3-coordinate geometry to two Mg and one Cr atom. In the second O site, O is bonded in a trigonal non-coplanar geometry to two Mg and one Cr atom. In the third O site, O is bonded in a distorted trigonal non-coplanar geometry to two Mg and one Cr atom. In the fourth O site, O is bonded in a 3-coordinate geometry to two Mg and one Cr atom. In the fifth O site, O is bonded in a distorted trigonal non-coplanar geometry to two Mg and one Cr atom. In the sixth O site, O is bonded in a distorted T-shaped geometry to two Mg and one Cr atom. In each Mg3Si4O12 sheet, there are three inequivalent Mg sites. In the first Mg site, Mg is bonded to six O atoms to form MgO6 octahedra that share corners with four SiO4 tetrahedra and edges with six MgO6 octahedra. There are a spread of Mg–O bond distances ranging from 2.01–2.16 Å. In the second Mg site, Mg is bonded to six O atoms to form MgO6 octahedra that share corners with four SiO4 tetrahedra and edges with six MgO6 octahedra. There are a spread of Mg–O bond distances ranging from 2.01–2.16 Å. In the third Mg site, Mg is bonded to six O atoms to form MgO6 octahedra that share corners with four SiO4 tetrahedra and edges with six MgO6 octahedra. There are a spread of Mg–O bond distances ranging from 2.06–2.11 Å. There are four inequivalent Si sites. In the first Si site, Si is bonded to four O atoms to form SiO4 tetrahedra that share corners with three MgO6 octahedra and corners with three equivalent SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 56–58°. There is one shorter (1.64 Å) and three longer (1.65 Å) Si–O bond length. In the second Si site, Si is bonded to four O atoms to form SiO4 tetrahedra that share corners with three MgO6 octahedra and corners with three equivalent SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 55–58°. There is one shorter (1.64 Å) and three longer (1.65 Å) Si–O bond length. In the third Si site, Si is bonded to four O atoms to form SiO4 tetrahedra that share corners with three MgO6 octahedra and corners with three equivalent SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 56–58°. There is two shorter (1.64 Å) and two longer (1.65 Å) Si–O bond length. In the fourth Si site, Si is bonded to four O atoms to form SiO4 tetrahedra that share corners with three MgO6 octahedra and corners with three equivalent SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 56–59°. There is three shorter (1.64 Å) and one longer (1.65 Å) Si–O bond length. There are twelve inequivalent O sites. In the first O site, O is bonded in a trigonal non-coplanar geometry to three Mg atoms. In the second O site, O is bonded in a bent 150 degrees geometry to two Si atoms. In the third O site, O is bonded in a distorted rectangular see-saw-like geometry to three Mg and one Si atom. In the fourth O site, O is bonded in a distorted rectangular see-saw-like geometry to three Mg and one Si atom. In the fifth O site, O is bonded in a bent 150 degrees geometry to two Si atoms. In the sixth O site, O is bonded in a bent 150 degrees geometry to two Si atoms. In the seventh O site, O is bonded in a bent 150 degrees geometry to two Si atoms. In the eighth O site, O is bonded in a bent 150 degrees geometry to two Si atoms. In the ninth O site, O is bonded in a bent 150 degrees geometry to two Si atoms. In the tenth O site, O is bonded in a distorted rectangular see-saw-like geometry to three Mg and one Si atom. In the eleventh O site, O is bonded in a trigonal non-coplanar geometry to three Mg atoms. In the twelfth O site, O is bonded in a distorted rectangular see-saw-like geometry to three Mg and one Si atom.

36 MATERIALS SCIENCE↗

Materials Data on Cr2CoP3 by Materials Project

Cr2CoP3 is Modderite-derived structured and crystallizes in the monoclinic Pm space group. The structure is three-dimensional. there are eight inequivalent Cr3+ sites. In the first Cr3+ site, Cr3+ is bonded to six P3- atoms to form distorted CrP6 pentagonal pyramids that share corners with four equivalent CoP6 octahedra, corners with eight CrP6 octahedra, edges with four CrP6 octahedra, edges with two equivalent CrP6 pentagonal pyramids, and faces with two equivalent CoP6 octahedra. The corner-sharing octahedra tilt angles range from 42–58°. There are a spread of Cr–P bond distances ranging from 2.26–2.37 Å. In the second Cr3+ site, Cr3+ is bonded to six P3- atoms to form distorted CrP6 pentagonal pyramids that share corners with four equivalent CoP6 octahedra, corners with eight CrP6 octahedra, edges with four CrP6 octahedra, edges with two equivalent CrP6 pentagonal pyramids, and faces with two equivalent CoP6 octahedra. The corner-sharing octahedra tilt angles range from 42–57°. There are a spread of Cr–P bond distances ranging from 2.26–2.38 Å. In the third Cr3+ site, Cr3+ is bonded to six P3- atoms to form distorted CrP6 octahedra that share corners with four equivalent CrP6 octahedra, corners with four equivalent CoP6 octahedra, corners with four equivalent CrP6 pentagonal pyramids, edges with two equivalent CrP6 octahedra, edges with four CoP6 octahedra, and faces with two equivalent CrP6 octahedra. The corner-sharing octahedra tilt angles range from 44–58°. There are a spread of Cr–P bond distances ranging from 2.30–2.39 Å. In the fourth Cr3+ site, Cr3+ is bonded to six P3- atoms to form distorted CrP6 octahedra that share corners with four equivalent CrP6 octahedra, corners with four equivalent CoP6 octahedra, corners with four equivalent CrP6 pentagonal pyramids, edges with two equivalent CrP6 octahedra, edges with four CoP6 octahedra, and faces with two equivalent CrP6 octahedra. The corner-sharing octahedra tilt angles range from 43–60°. There are a spread of Cr–P bond distances ranging from 2.32–2.41 Å. In the fifth Cr3+ site, Cr3+ is bonded to six P3- atoms to form distorted CrP6 octahedra that share corners with four equivalent CrP6 octahedra, corners with eight CrP6 pentagonal pyramids, edges with two equivalent CrP6 octahedra, edges with four CoP6 octahedra, and faces with two equivalent CrP6 octahedra. The corner-sharing octahedra tilt angles range from 57–59°. There are a spread of Cr–P bond distances ranging from 2.31–2.40 Å. In the sixth Cr3+ site, Cr3+ is bonded to six P3- atoms to form distorted CrP6 octahedra that share corners with four equivalent CrP6 octahedra, corners with eight CoP6 octahedra, edges with two equivalent CrP6 octahedra, edges with two equivalent CoP6 octahedra, edges with two equivalent CrP6 pentagonal pyramids, and faces with two equivalent CrP6 octahedra. The corner-sharing octahedra tilt angles range from 43–58°. There are a spread of Cr–P bond distances ranging from 2.32–2.40 Å. In the seventh Cr3+ site, Cr3+ is bonded to six P3- atoms to form distorted CrP6 octahedra that share corners with four equivalent CrP6 octahedra, corners with eight CoP6 octahedra, edges with two equivalent CrP6 octahedra, edges with two equivalent CoP6 octahedra, edges with two equivalent CrP6 pentagonal pyramids, and faces with two equivalent CrP6 octahedra. The corner-sharing octahedra tilt angles range from 44–60°. There are a spread of Cr–P bond distances ranging from 2.31–2.43 Å. In the eighth Cr3+ site, Cr3+ is bonded to six P3- atoms to form distorted CrP6 octahedra that share corners with four equivalent CrP6 octahedra, corners with eight CoP6 octahedra, edges with two equivalent CrP6 octahedra, edges with four CrP6 pentagonal pyramids, and faces with two equivalent CrP6 octahedra. The corner-sharing octahedra tilt angles range from 43–59°. There are a spread of Cr–P bond distances ranging from 2.32–2.42 Å. There are four inequivalent Co3+ sites. In the first Co3+ site, Co3+ is bonded to six P3- atoms to form distorted CoP6 octahedra that share corners with four equivalent CoP6 octahedra, corners with eight CrP6 octahedra, edges with two equivalent CoP6 octahedra, edges with four CrP6 octahedra, and faces with two equivalent CoP6 octahedra. The corner-sharing octahedra tilt angles range from 43–56°. There are a spread of Co–P bond distances ranging from 2.24–2.37 Å. In the second Co3+ site, Co3+ is bonded to six P3- atoms to form distorted CoP6 octahedra that share corners with eight CrP6 octahedra, corners with four equivalent CrP6 pentagonal pyramids, edges with two equivalent CoP6 octahedra, edges with four CrP6 octahedra, and faces with two equivalent CrP6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 44–56°. There are a spread of Co–P bond distances ranging from 2.28–2.36 Å. In the third Co3+ site, Co3+ is bonded to six P3- atoms to form distorted CoP6 octahedra that share corners with eight CrP6 octahedra, corners with four equivalent CrP6 pentagonal pyramids, edges with two equivalent CoP6 octahedra, edges with four CrP6 octahedra, and faces with two equivalent CrP6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 43–56°. There are a spread of Co–P bond distances ranging from 2.28–2.36 Å. In the fourth Co3+ site, Co3+ is bonded to six P3- atoms to form distorted CoP6 octahedra that share corners with four equivalent CoP6 octahedra, corners with eight CrP6 octahedra, edges with two equivalent CoP6 octahedra, edges with four CrP6 octahedra, and faces with two equivalent CoP6 octahedra. The corner-sharing octahedra tilt angles range from 43–56°. There are a spread of Co–P bond distances ranging from 2.25–2.37 Å. There are twelve inequivalent P3- sites. In the first P3- site, P3- is bonded in a 6-coordinate geometry to five Cr3+ and one Co3+ atom. In the second P3- site, P3- is bonded in a 6-coordinate geometry to four Cr3+ and two Co3+ atoms. In the third P3- site, P3- is bonded in a 6-coordinate geometry to five Cr3+ and one Co3+ atom. In the fourth P3- site, P3- is bonded in a 6-coordinate geometry to four Cr3+ and two Co3+ atoms. In the fifth P3- site, P3- is bonded in a 6-coordinate geometry to five Cr3+ and one Co3+ atom. In the sixth P3- site, P3- is bonded in a 6-coordinate geometry to five Cr3+ and one Co3+ atom. In the seventh P3- site, P3- is bonded in a 6-coordinate geometry to two Cr3+ and four Co3+ atoms. In the eighth P3- site, P3- is bonded in a 6-coordinate geometry to four Cr3+ and two equivalent Co3+ atoms. In the ninth P3- site, P3- is bonded in a 6-coordinate geometry to four Cr3+ and two equivalent Co3+ atoms. In the tenth P3- site, P3- is bonded in a 6-coordinate geometry to two Cr3+ and four Co3+ atoms. In the eleventh P3- site, P3- is bonded in a 6-coordinate geometry to four Cr3+ and two equivalent Co3+ atoms. In the twelfth P3- site, P3- is bonded in a 6-coordinate geometry to four Cr3+ and two equivalent Co3+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on ZrNbCr4 by Materials Project

ZrNbCr4 is Hexagonal Laves-derived structured and crystallizes in the cubic F-43m space group. The structure is three-dimensional. Zr is bonded in a 12-coordinate geometry to four equivalent Nb and twelve equivalent Cr atoms. All Zr–Nb bond lengths are 3.05 Å. All Zr–Cr bond lengths are 2.92 Å. Nb is bonded in a 4-coordinate geometry to four equivalent Zr and twelve equivalent Cr atoms. All Nb–Cr bond lengths are 2.92 Å. Cr is bonded to three equivalent Zr, three equivalent Nb, and six equivalent Cr atoms to form a mixture of edge, corner, and face-sharing CrZr3Nb3Cr6 cuboctahedra. There are three shorter (2.49 Å) and three longer (2.50 Å) Cr–Cr bond lengths.

36 MATERIALS SCIENCE↗

Materials Data on NbVCr by Materials Project

NbVCr crystallizes in the orthorhombic Imma space group. The structure is three-dimensional. Nb is bonded in a 12-coordinate geometry to four equivalent Nb, six equivalent V, and six equivalent Cr atoms. There are two shorter (3.05 Å) and two longer (3.07 Å) Nb–Nb bond lengths. There are four shorter (2.91 Å) and two longer (2.94 Å) Nb–V bond lengths. There are two shorter (2.91 Å) and four longer (2.95 Å) Nb–Cr bond lengths. V is bonded to six equivalent Nb, two equivalent V, and four equivalent Cr atoms to form VNb6V2Cr4 cuboctahedra that share corners with eight equivalent CrNb6V4Cr2 cuboctahedra, corners with ten equivalent VNb6V2Cr4 cuboctahedra, edges with six equivalent VNb6V2Cr4 cuboctahedra, faces with six equivalent VNb6V2Cr4 cuboctahedra, and faces with twelve equivalent CrNb6V4Cr2 cuboctahedra. Both V–V bond lengths are 2.52 Å. All V–Cr bond lengths are 2.50 Å. Cr is bonded to six equivalent Nb, four equivalent V, and two equivalent Cr atoms to form CrNb6V4Cr2 cuboctahedra that share corners with eight equivalent VNb6V2Cr4 cuboctahedra, corners with ten equivalent CrNb6V4Cr2 cuboctahedra, edges with six equivalent CrNb6V4Cr2 cuboctahedra, faces with six equivalent CrNb6V4Cr2 cuboctahedra, and faces with twelve equivalent VNb6V2Cr4 cuboctahedra. Both Cr–Cr bond lengths are 2.48 Å.

36 MATERIALS SCIENCE↗