Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “K edge”

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 667 records · Page 37
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on K5Ag2(AsSe3)3 by Materials Project

K5Ag2As3Se9 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are three inequivalent K1+ sites. In the first K1+ site, K1+ is bonded to seven Se2- atoms to form distorted KSe7 pentagonal bipyramids that share corners with four KSe7 pentagonal bipyramids, a cornercorner with one AgSe4 tetrahedra, edges with six KSe7 pentagonal bipyramids, edges with two equivalent AgSe4 tetrahedra, and edges with two equivalent AsSe4 tetrahedra. There are a spread of K–Se bond distances ranging from 3.32–3.72 Å. In the second K1+ site, K1+ is bonded in a 7-coordinate geometry to seven Se2- atoms. There are a spread of K–Se bond distances ranging from 3.41–3.81 Å. In the third K1+ site, K1+ is bonded to seven Se2- atoms to form distorted KSe7 pentagonal bipyramids that share corners with two equivalent KSe7 pentagonal bipyramids, a cornercorner with one AsSe4 tetrahedra, corners with two equivalent AgSe4 tetrahedra, edges with five KSe7 pentagonal bipyramids, an edgeedge with one AsSe4 tetrahedra, edges with two equivalent AgSe4 tetrahedra, and a faceface with one KSe7 pentagonal bipyramid. There are a spread of K–Se bond distances ranging from 3.37–3.68 Å. Ag1+ is bonded to four Se2- atoms to form AgSe4 tetrahedra that share corners with three KSe7 pentagonal bipyramids, a cornercorner with one AgSe4 tetrahedra, a cornercorner with one AsSe4 tetrahedra, and edges with four KSe7 pentagonal bipyramids. There are a spread of Ag–Se bond distances ranging from 2.67–2.75 Å. There are three inequivalent As+3.67+ sites. In the first As+3.67+ site, As+3.67+ is bonded in a distorted trigonal non-coplanar geometry to three Se2- atoms. There are two shorter (2.36 Å) and one longer (3.13 Å) As–Se bond lengths. In the second As+3.67+ site, As+3.67+ is bonded in a trigonal non-coplanar geometry to three Se2- atoms. There are two shorter (2.39 Å) and one longer (2.41 Å) As–Se bond lengths. In the third As+3.67+ site, As+3.67+ is bonded to four Se2- atoms to form AsSe4 tetrahedra that share corners with two equivalent KSe7 pentagonal bipyramids, corners with two equivalent AgSe4 tetrahedra, and edges with six KSe7 pentagonal bipyramids. There are a spread of As–Se bond distances ranging from 2.34–2.39 Å. There are six inequivalent Se2- sites. In the first Se2- site, Se2- is bonded to two equivalent K1+, two equivalent Ag1+, and one As+3.67+ atom to form SeK2Ag2As square pyramids that share corners with four equivalent SeK4AgAs octahedra and an edgeedge with one SeK4As2 octahedra. The corner-sharing octahedra tilt angles range from 58–75°. In the second Se2- site, Se2- is bonded in a 6-coordinate geometry to four K1+, one Ag1+, and one As+3.67+ atom. In the third Se2- site, Se2- is bonded to four K1+, one Ag1+, and one As+3.67+ atom to form distorted SeK4AgAs octahedra that share corners with two equivalent SeK2Ag2As square pyramids and edges with four SeK4As2 octahedra. In the fourth Se2- site, Se2- is bonded in a 6-coordinate geometry to five K1+ and one As+3.67+ atom. In the fifth Se2- site, Se2- is bonded in a 6-coordinate geometry to four K1+, one Ag1+, and one As+3.67+ atom. In the sixth Se2- site, Se2- is bonded to four K1+ and two As+3.67+ atoms to form distorted SeK4As2 octahedra that share edges with four equivalent SeK4AgAs octahedra and an edgeedge with one SeK2Ag2As square pyramid.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K4SnSe4 by Materials Project

K4SnSe4 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are three inequivalent K1+ sites. In the first K1+ site, K1+ is bonded to six Se2- atoms to form KSe6 octahedra that share corners with four equivalent KSe6 pentagonal pyramids, corners with two equivalent SnSe4 tetrahedra, edges with two equivalent KSe6 octahedra, edges with two equivalent KSe6 pentagonal pyramids, and edges with two equivalent SnSe4 tetrahedra. There are a spread of K–Se bond distances ranging from 3.29–3.84 Å. In the second K1+ site, K1+ is bonded to six Se2- atoms to form distorted KSe6 pentagonal pyramids that share corners with four equivalent KSe6 octahedra, corners with two equivalent SnSe4 tetrahedra, edges with two equivalent KSe6 octahedra, edges with two equivalent KSe6 pentagonal pyramids, and edges with two equivalent SnSe4 tetrahedra. The corner-sharing octahedra tilt angles range from 47–79°. There are a spread of K–Se bond distances ranging from 3.37–3.80 Å. In the third K1+ site, K1+ is bonded in a 6-coordinate geometry to six Se2- atoms. There are a spread of K–Se bond distances ranging from 3.32–3.86 Å. Sn4+ is bonded to four Se2- atoms to form SnSe4 tetrahedra that share corners with two equivalent KSe6 octahedra, corners with two equivalent KSe6 pentagonal pyramids, edges with two equivalent KSe6 octahedra, and edges with two equivalent KSe6 pentagonal pyramids. The corner-sharing octahedral tilt angles are 43°. There are a spread of Sn–Se bond distances ranging from 2.55–2.59 Å. There are three inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 8-coordinate geometry to seven K1+ and one Sn4+ atom. In the second Se2- site, Se2- is bonded in a 8-coordinate geometry to seven K1+ and one Sn4+ atom. In the third Se2- site, Se2- is bonded in a 6-coordinate geometry to five K1+ and one Sn4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K2HgCl4O by Materials Project

K2HgOCl4 crystallizes in the orthorhombic Pbam space group. The structure is three-dimensional. there are two inequivalent K sites. In the first K site, K is bonded in a 9-coordinate geometry to two equivalent O and seven Cl atoms. Both K–O bond lengths are 3.15 Å. There are a spread of K–Cl bond distances ranging from 3.14–3.61 Å. In the second K site, K is bonded in a 9-coordinate geometry to two equivalent O and seven Cl atoms. Both K–O bond lengths are 3.00 Å. There are a spread of K–Cl bond distances ranging from 3.11–3.61 Å. Hg is bonded to six Cl atoms to form distorted edge-sharing HgCl6 octahedra. There are a spread of Hg–Cl bond distances ranging from 2.45–3.00 Å. O is bonded in a rectangular see-saw-like geometry to four K atoms. There are three inequivalent Cl sites. In the first Cl site, Cl is bonded to three equivalent K and two equivalent Hg atoms to form distorted ClK3Hg2 trigonal bipyramids that share corners with twelve ClK3Hg2 trigonal bipyramids and edges with eight ClK4Hg trigonal bipyramids. In the second Cl site, Cl is bonded to three equivalent K and two equivalent Hg atoms to form a mixture of edge and corner-sharing ClK3Hg2 trigonal bipyramids. In the third Cl site, Cl is bonded to four K and one Hg atom to form a mixture of distorted edge and corner-sharing ClK4Hg trigonal bipyramids.

36 MATERIALS SCIENCE↗
DOE OSTI2023

Recent developments in photoresists for extreme-ultraviolet lithography

Here, this report describes recent developments and current needs in the field of high-resolution photopolymers and photomolecules briefly describing prior generation lithographic patterning materials. It subsequently concentrates on recent advances in both inorganic and polymeric materials for extreme ultraviolet (EUV) lithography. It is also part of a series of papers written in celebration of the centenary of the Polymeric Materials: Science and Engineering (PMSE) division of the American Chemical Society (ACS). PMSE has long been home to polymer chemists who have made important contributions to advances in semiconductor manufacturing as a result of PMSE's focus on polymer coatings research. While EUV lithography has been an area of research for several decades, only within the last 5 years has the combination of new light sources, EUV optics, tool advances and resist discoveries come together to transition this area from the patterning method of the future to a leading-edge manufacturing technology.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K4ZnO3 by Materials Project

K4ZnO3 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are eight inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 3-coordinate geometry to three O2- atoms. There are a spread of K–O bond distances ranging from 2.66–2.83 Å. In the second K1+ site, K1+ is bonded to four O2- atoms to form distorted KO4 trigonal pyramids that share a cornercorner with one KO5 trigonal bipyramid, an edgeedge with one KO5 trigonal bipyramid, and an edgeedge with one KO4 trigonal pyramid. There are a spread of K–O bond distances ranging from 2.66–2.86 Å. In the third K1+ site, K1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of K–O bond distances ranging from 2.67–2.90 Å. In the fourth K1+ site, K1+ is bonded to four O2- atoms to form distorted KO4 tetrahedra that share corners with four equivalent KO5 trigonal bipyramids and an edgeedge with one KO4 tetrahedra. There are a spread of K–O bond distances ranging from 2.67–2.82 Å. In the fifth K1+ site, K1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of K–O bond distances ranging from 2.71–2.84 Å. In the sixth K1+ site, K1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of K–O bond distances ranging from 2.61–3.18 Å. In the seventh K1+ site, K1+ is bonded to five O2- atoms to form a mixture of distorted corner and edge-sharing KO5 trigonal bipyramids. There are a spread of K–O bond distances ranging from 2.81–3.04 Å. In the eighth K1+ site, K1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of K–O bond distances ranging from 2.62–3.03 Å. There are two inequivalent Zn2+ sites. In the first Zn2+ site, Zn2+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.93 Å) and two longer (1.94 Å) Zn–O bond length. In the second Zn2+ site, Zn2+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of Zn–O bond distances ranging from 1.92–1.94 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a 6-coordinate geometry to five K1+ and one Zn2+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to six K1+ and one Zn2+ atom. In the third O2- site, O2- is bonded in a 7-coordinate geometry to six K1+ and one Zn2+ atom. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to five K1+ and one Zn2+ atom. In the fifth O2- site, O2- is bonded in a 1-coordinate geometry to five K1+ and one Zn2+ atom. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to five K1+ and one Zn2+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K23Na8(CdIn4)12 by Materials Project

Na8K23Cd12In48 is Bergman Structure: Mg32(Al,Zn)49 Bergman-derived structured and crystallizes in the hexagonal P6/mmm space group. The structure is three-dimensional. there are four inequivalent K sites. In the first K site, K is bonded in a 12-coordinate geometry to four K, one Na, two equivalent Cd, and nine In atoms. There are a spread of K–K bond distances ranging from 3.93–4.18 Å. The K–Na bond length is 3.89 Å. Both K–Cd bond lengths are 3.91 Å. There are a spread of K–In bond distances ranging from 3.66–3.90 Å. In the second K site, K is bonded in a 10-coordinate geometry to four equivalent K and ten In atoms. There are a spread of K–In bond distances ranging from 3.78–4.03 Å. In the third K site, K is bonded in a 12-coordinate geometry to three equivalent K and twelve In atoms. There are three shorter (3.58 Å) and nine longer (3.71 Å) K–In bond lengths. In the fourth K site, K is bonded in a 2-coordinate geometry to eight Na atoms. There are two shorter (3.70 Å) and six longer (4.22 Å) K–Na bond lengths. There are two inequivalent Na sites. In the first Na site, Na is bonded in a 10-coordinate geometry to three K, four equivalent Cd, and six In atoms. All Na–Cd bond lengths are 3.46 Å. There are two shorter (3.63 Å) and four longer (3.66 Å) Na–In bond lengths. In the second Na site, Na is bonded in a 6-coordinate geometry to one K, one Na, six equivalent Cd, and six equivalent In atoms. The Na–Na bond length is 3.29 Å. All Na–Cd bond lengths are 3.44 Å. All Na–In bond lengths are 3.64 Å. Cd is bonded in a 12-coordinate geometry to two equivalent K, three Na, and three In atoms. There are one shorter (3.11 Å) and two longer (3.13 Å) Cd–In bond lengths. There are five inequivalent In sites. In the first In site, In is bonded in a 11-coordinate geometry to three K, two equivalent Na, one Cd, and five In atoms. There are a spread of In–In bond distances ranging from 3.10–3.21 Å. In the second In site, In is bonded in a distorted q6 geometry to four K, one Na, and six In atoms. There are a spread of In–In bond distances ranging from 3.04–3.21 Å. In the third In site, In is bonded in a 11-coordinate geometry to five K and six In atoms. There are one shorter (3.07 Å) and one longer (3.16 Å) In–In bond lengths. In the fourth In site, In is bonded to eight K and four In atoms to form a mixture of edge and face-sharing InK8In4 cuboctahedra. Both In–In bond lengths are 3.19 Å. In the fifth In site, In is bonded in a distorted q6 geometry to four K, two equivalent Na, four equivalent Cd, and two equivalent In atoms. Both In–In bond lengths are 3.24 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K2SeS3O7 by Materials Project

K2S2O7SeS crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional and consists of four hydrogen sulfide molecules, four selenium molecules, and one K2S2O7 framework. In the K2S2O7 framework, there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of K–O bond distances ranging from 2.80–3.23 Å. In the second K1+ site, K1+ is bonded to eight O2- atoms to form a mixture of distorted corner and edge-sharing KO8 hexagonal bipyramids. There are a spread of K–O bond distances ranging from 2.72–3.16 Å. There are two inequivalent S+2.67+ sites. In the first S+2.67+ site, S+2.67+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. All S–O bond lengths are 1.47 Å. In the second S+2.67+ site, S+2.67+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There is two shorter (1.46 Å) and one longer (1.48 Å) S–O bond length. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to three K1+ and one S+2.67+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent K1+ and one S+2.67+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to three K1+ and one S+2.67+ atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to one K1+ and one S+2.67+ atom. In the fifth O2- site, O2- is bonded in a bent 120 degrees geometry to two K1+ atoms. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to three K1+ and one S+2.67+ atom. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to three K1+ and one S+2.67+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K2U(Si2O5)3 by Materials Project

K2U(Si2O5)3 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are four inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 8-coordinate geometry to seven O2- atoms. There are a spread of K–O bond distances ranging from 2.80–3.32 Å. In the second K1+ site, K1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of K–O bond distances ranging from 2.72–3.28 Å. In the third K1+ site, K1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of K–O bond distances ranging from 2.88–3.41 Å. In the fourth K1+ site, K1+ is bonded to eight O2- atoms to form distorted KO8 hexagonal bipyramids that share corners with six SiO4 tetrahedra, edges with two equivalent UO6 octahedra, and edges with three SiO4 tetrahedra. There are a spread of K–O bond distances ranging from 2.93–3.33 Å. There are two inequivalent U4+ sites. In the first U4+ site, U4+ is bonded to six O2- atoms to form UO6 octahedra that share corners with six SiO4 tetrahedra. There are a spread of U–O bond distances ranging from 2.22–2.32 Å. In the second U4+ site, U4+ is bonded to six O2- atoms to form distorted UO6 octahedra that share corners with six SiO4 tetrahedra and edges with two equivalent KO8 hexagonal bipyramids. There are a spread of U–O bond distances ranging from 2.24–2.34 Å. There are twelve inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one UO6 octahedra, corners with three SiO4 tetrahedra, and an edgeedge with one KO8 hexagonal bipyramid. The corner-sharing octahedral tilt angles are 47°. There are a spread of Si–O bond distances ranging from 1.61–1.66 Å. In the second Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one UO6 octahedra and corners with three SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 40°. There are a spread of Si–O bond distances ranging from 1.61–1.66 Å. In the third Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one KO8 hexagonal bipyramid, a cornercorner with one UO6 octahedra, and corners with three SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 50°. There are a spread of Si–O bond distances ranging from 1.61–1.66 Å. In the fourth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with two equivalent KO8 hexagonal bipyramids, a cornercorner with one UO6 octahedra, and corners with three SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 26°. There are a spread of Si–O bond distances ranging from 1.61–1.66 Å. In the fifth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one UO6 octahedra and corners with three SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 49°. There are a spread of Si–O bond distances ranging from 1.62–1.65 Å. In the sixth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one UO6 octahedra and corners with three SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 39°. There are a spread of Si–O bond distances ranging from 1.61–1.65 Å. In the seventh Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one KO8 hexagonal bipyramid, a cornercorner with one UO6 octahedra, and corners with three SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 58°. There are a spread of Si–O bond distances ranging from 1.61–1.65 Å. In the eighth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one UO6 octahedra and corners with three SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 67°. There are a spread of Si–O bond distances ranging from 1.61–1.66 Å. In the ninth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one UO6 octahedra, corners with three SiO4 tetrahedra, and an edgeedge with one KO8 hexagonal bipyramid. The corner-sharing octahedral tilt angles are 46°. There are a spread of Si–O bond distances ranging from 1.61–1.65 Å. In the tenth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one KO8 hexagonal bipyramid, a cornercorner with one UO6 octahedra, and corners with three SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 52°. There are a spread of Si–O bond distances ranging from 1.61–1.65 Å. In the eleventh Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one KO8 hexagonal bipyramid, a cornercorner with one UO6 octahedra, and corners with three SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 41°. There are a spread of Si–O bond distances ranging from 1.61–1.66 Å. In the twelfth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one UO6 octahedra, corners with three SiO4 tetrahedra, and an edgeedge with one KO8 hexagonal bipyramid. The corner-sharing octahedral tilt angles are 39°. There are a spread of Si–O bond distances ranging from 1.61–1.66 Å. There are thirty inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one U4+, and one Si4+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to two K1+, one U4+, and one Si4+ atom. In the third O2- site, O2- is bonded in a 1-coordinate geometry to two K1+, one U4+, and one Si4+ atom. In the fourth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one K1+ and two Si4+ atoms. In the fifth O2- site, O2- is bonded in a bent 150 degrees geometry to two Si4+ atoms. In the sixth O2- site, O2- is bonded in a bent 150 degrees geometry to two Si4+ atoms. In the seventh O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Si4+ atoms. In the eighth O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent K1+, one U4+, and one Si4+ atom. In the ninth O2- site, O2- is bonded in a bent 150 degrees geometry to two Si4+ atoms. In the tenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one K1+, one U4+, and one Si4+ atom. In the eleventh O2- site, O2- is bonded in a bent 150 degrees geometry to two Si4+ atoms. In the twelfth O2- site, O2- is bonded in a 3-coordinate geometry to two K1+, one U4+, and one Si4+ atom. In the thirteenth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one K1+ and two Si4+ atoms. In the fourteenth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one K1+ and two Si4+ atoms. In the fifteenth O2- site, O2- is bonded in a linear geometry to two Si4+ atoms. In the sixteenth O2- site, O2- is bonded in a 2-coordinate geometry to two K1+, one U4+, and one Si4+ atom. In the seventeenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one K1+ and two Si4+ atoms. In the eighteenth O2- site, O2- is bonded in a 1-coordinate geometry to one K1+, one U4+, and one Si4+ atom. In the nineteenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one K1+ and two Si4+ atoms. In the twentieth O2- site, O2- is bonded in a 1-coordinate geometry to two K1+, one U4+, and one Si4+ atom. In the twenty-first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one K1+ and two Si4+ atoms. In the twenty-second O2- site, O2- is bonded in a 2-coordinate geometry to one K1+ and two Si4+ atoms. In the twenty-third O2- site, O2- is bonded in a 2-coordinate geometry to one K1+ and two Si4+ atoms. In the twenty-fourth O2- site, O2- is bonded in a 1-coordinate geometry to two K1+, one U4+, and one Si4+ atom. In the twenty-fifth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one K1+ and two Si4+ atoms. In the twenty-sixth O2- site, O2- is bonded in a bent 150 degrees geometry to two Si4+ atoms. In the twenty-seventh O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one U4+, and one Si4+ atom. In the twenty-eighth O2- site, O2- is bonded in a 1-coordinate geometry to two K1+, one U4+, and one Si4+ atom. In the twenty-ninth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one K1+ and two Si4+ atoms. In the thirtieth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one K1+ and two Si4+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K2O by Materials Project

K2O crystallizes in the tetragonal P4_2/nmc space group. The structure is three-dimensional. there are three inequivalent K1+ sites. In the first K1+ site, K1+ is bonded to four equivalent O2- atoms to form a mixture of edge and corner-sharing KO4 tetrahedra. There are two shorter (2.78 Å) and two longer (2.98 Å) K–O bond lengths. In the second K1+ site, K1+ is bonded to four equivalent O2- atoms to form a mixture of edge and corner-sharing KO4 tetrahedra. There are two shorter (2.69 Å) and two longer (2.80 Å) K–O bond lengths. In the third K1+ site, K1+ is bonded in a linear geometry to two equivalent O2- atoms. Both K–O bond lengths are 2.50 Å. O2- is bonded to seven K1+ atoms to form a mixture of distorted edge and corner-sharing OK7 hexagonal pyramids.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K2Sn by Materials Project

K2Sn is Fluorite structured and crystallizes in the trigonal R-3m space group. The structure is three-dimensional. K is bonded to four equivalent Sn atoms to form a mixture of edge and corner-sharing KSn4 tetrahedra. There are three shorter (3.74 Å) and one longer (3.77 Å) K–Sn bond lengths. Sn is bonded in a body-centered cubic geometry to eight equivalent K atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K2OsO5 by Materials Project

K2OsO5 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are twelve inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of K–O bond distances ranging from 2.64–2.89 Å. In the second K1+ site, K1+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of K–O bond distances ranging from 2.58–3.33 Å. In the third K1+ site, K1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of K–O bond distances ranging from 2.76–2.93 Å. In the fourth K1+ site, K1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of K–O bond distances ranging from 2.72–2.93 Å. In the fifth K1+ site, K1+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of K–O bond distances ranging from 2.76–3.40 Å. In the sixth K1+ site, K1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of K–O bond distances ranging from 2.61–3.23 Å. In the seventh K1+ site, K1+ is bonded to seven O2- atoms to form distorted KO7 pentagonal bipyramids that share corners with three OsO5 trigonal bipyramids and edges with two OsO5 trigonal bipyramids. There are a spread of K–O bond distances ranging from 2.65–3.11 Å. In the eighth K1+ site, K1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of K–O bond distances ranging from 2.65–3.20 Å. In the ninth K1+ site, K1+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of K–O bond distances ranging from 2.75–3.31 Å. In the tenth K1+ site, K1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of K–O bond distances ranging from 2.60–3.31 Å. In the eleventh K1+ site, K1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of K–O bond distances ranging from 2.59–3.00 Å. In the twelfth K1+ site, K1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of K–O bond distances ranging from 2.77–3.15 Å. There are six inequivalent Os8+ sites. In the first Os8+ site, Os8+ is bonded in a trigonal bipyramidal geometry to five O2- atoms. There are a spread of Os–O bond distances ranging from 1.78–1.84 Å. In the second Os8+ site, Os8+ is bonded in a trigonal bipyramidal geometry to five O2- atoms. There are a spread of Os–O bond distances ranging from 1.78–1.83 Å. In the third Os8+ site, Os8+ is bonded to five O2- atoms to form distorted OsO5 trigonal bipyramids that share a cornercorner with one KO7 pentagonal bipyramid. There are a spread of Os–O bond distances ranging from 1.76–1.83 Å. In the fourth Os8+ site, Os8+ is bonded to five O2- atoms to form OsO5 trigonal bipyramids that share corners with two equivalent KO7 pentagonal bipyramids. There are a spread of Os–O bond distances ranging from 1.78–1.83 Å. In the fifth Os8+ site, Os8+ is bonded to five O2- atoms to form OsO5 trigonal bipyramids that share an edgeedge with one KO7 pentagonal bipyramid. There are a spread of Os–O bond distances ranging from 1.79–1.84 Å. In the sixth Os8+ site, Os8+ is bonded to five O2- atoms to form OsO5 trigonal bipyramids that share an edgeedge with one KO7 pentagonal bipyramid. There are a spread of Os–O bond distances ranging from 1.78–1.83 Å. There are thirty inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to four K1+ and one Os8+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to three K1+ and one Os8+ atom. In the third O2- site, O2- is bonded in a 1-coordinate geometry to three K1+ and one Os8+ atom. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to four K1+ and one Os8+ atom. In the fifth O2- site, O2- is bonded to three K1+ and one Os8+ atom to form a mixture of distorted edge and corner-sharing OK3Os tetrahedra. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to three K1+ and one Os8+ atom. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to two K1+ and one Os8+ atom. In the eighth O2- site, O2- is bonded to three K1+ and one Os8+ atom to form a mixture of distorted edge and corner-sharing OK3Os tetrahedra. In the ninth O2- site, O2- is bonded in a 1-coordinate geometry to three K1+ and one Os8+ atom. In the tenth O2- site, O2- is bonded in a 1-coordinate geometry to two K1+ and one Os8+ atom. In the eleventh O2- site, O2- is bonded in a 1-coordinate geometry to two K1+ and one Os8+ atom. In the twelfth O2- site, O2- is bonded in a 4-coordinate geometry to three K1+ and one Os8+ atom. In the thirteenth O2- site, O2- is bonded to three K1+ and one Os8+ atom to form a mixture of distorted edge and corner-sharing OK3Os tetrahedra. In the fourteenth O2- site, O2- is bonded in a 1-coordinate geometry to two K1+ and one Os8+ atom. In the fifteenth O2- site, O2- is bonded in a 1-coordinate geometry to two K1+ and one Os8+ atom. In the sixteenth O2- site, O2- is bonded in a 1-coordinate geometry to two K1+ and one Os8+ atom. In the seventeenth O2- site, O2- is bonded in a 1-coordinate geometry to four K1+ and one Os8+ atom. In the eighteenth O2- site, O2- is bonded in a 1-coordinate geometry to three K1+ and one Os8+ atom. In the nineteenth O2- site, O2- is bonded in a 1-coordinate geometry to three K1+ and one Os8+ atom. In the twentieth O2- site, O2- is bonded in a distorted single-bond geometry to four K1+ and one Os8+ atom. In the twenty-first O2- site, O2- is bonded in a 1-coordinate geometry to four K1+ and one Os8+ atom. In the twenty-second O2- site, O2- is bonded in a 4-coordinate geometry to three K1+ and one Os8+ atom. In the twenty-third O2- site, O2- is bonded in a 1-coordinate geometry to three K1+ and one Os8+ atom. In the twenty-fourth O2- site, O2- is bonded in a 4-coordinate geometry to three K1+ and one Os8+ atom. In the twenty-fifth O2- site, O2- is bonded in a 3-coordinate geometry to three K1+ and one Os8+ atom. In the twenty-sixth O2- site, O2- is bonded in a 1-coordinate geometry to two K1+ and one Os8+ atom. In the twenty-seventh O2- site, O2- is bonded in a 1-coordinate geometry to three K1+ and one Os8+ atom. In the twenty-eighth O2- site, O2- is bonded in a 1-coordinate geometry to three K1+ and one Os8+ atom. In the twenty-ninth O2- site, O2- is bonded in a 1-coordinate geometry to four K1+ and one Os8+ atom. In the thirtieth O2- site, O2- is bonded to three K1+ and one Os8+ atom to form a mixture of distorted edge and corner-sharing OK3Os tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K8La(PS4)4 by Materials Project

K8La(PS4)4 crystallizes in the orthorhombic I222 space group. The structure is three-dimensional. there are three inequivalent K1+ sites. In the first K1+ site, K1+ is bonded to eight S+1.94- atoms to form distorted KS8 hexagonal bipyramids that share corners with four equivalent KS8 hexagonal bipyramids, an edgeedge with one LaS8 hexagonal bipyramid, and edges with four equivalent PS4 tetrahedra. There are a spread of K–S bond distances ranging from 3.28–3.69 Å. In the second K1+ site, K1+ is bonded in a 6-coordinate geometry to six S+1.94- atoms. There are four shorter (3.35 Å) and two longer (3.52 Å) K–S bond lengths. In the third K1+ site, K1+ is bonded in a 8-coordinate geometry to eight S+1.94- atoms. There are a spread of K–S bond distances ranging from 3.17–3.53 Å. La3+ is bonded to eight S+1.94- atoms to form distorted LaS8 hexagonal bipyramids that share edges with two equivalent KS8 hexagonal bipyramids and edges with four equivalent PS4 tetrahedra. There are four shorter (3.03 Å) and four longer (3.07 Å) La–S bond lengths. P5+ is bonded to four S+1.94- atoms to form PS4 tetrahedra that share an edgeedge with one LaS8 hexagonal bipyramid and edges with two equivalent KS8 hexagonal bipyramids. There are a spread of P–S bond distances ranging from 2.04–2.06 Å. There are four inequivalent S+1.94- sites. In the first S+1.94- site, S+1.94- is bonded in a 1-coordinate geometry to five K1+ and one P5+ atom. In the second S+1.94- site, S+1.94- is bonded in a 5-coordinate geometry to three K1+, one La3+, and one P5+ atom. In the third S+1.94- site, S+1.94- is bonded in a 1-coordinate geometry to three equivalent K1+, one La3+, and one P5+ atom. In the fourth S+1.94- site, S+1.94- is bonded in a 1-coordinate geometry to four K1+ and one P5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KMnO2 by Materials Project

KMnO2 crystallizes in the tetragonal I-4m2 space group. The structure is three-dimensional. K1+ is bonded to six O2- atoms to form edge-sharing KO6 octahedra. There are a spread of K–O bond distances ranging from 2.54–2.78 Å. Mn3+ is bonded in a 5-coordinate geometry to five O2- atoms. There are four shorter (2.02 Å) and one longer (2.57 Å) Mn–O bond lengths. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to three equivalent K1+ and three equivalent Mn3+ atoms to form distorted edge-sharing OK3Mn3 octahedra. In the second O2- site, O2- is bonded in a 5-coordinate geometry to three equivalent K1+ and two equivalent Mn3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K2HoSbO7 by Materials Project

K2HoSbO7 crystallizes in the orthorhombic Imm2 space group. The structure is three-dimensional. there are two inequivalent K sites. In the first K site, K is bonded to eight O atoms to form KO8 hexagonal bipyramids that share corners with two equivalent KO8 hexagonal bipyramids, corners with two equivalent SbO6 octahedra, edges with four equivalent KO8 hexagonal bipyramids, edges with two equivalent SbO6 octahedra, and edges with four equivalent HoO6 octahedra. The corner-sharing octahedral tilt angles are 51°. There are a spread of K–O bond distances ranging from 2.63–3.07 Å. In the second K site, K is bonded to eight O atoms to form distorted KO8 hexagonal bipyramids that share edges with six KO8 hexagonal bipyramids, edges with two equivalent HoO6 octahedra, and edges with four equivalent SbO6 octahedra. There are a spread of K–O bond distances ranging from 2.78–3.14 Å. Ho is bonded to six O atoms to form HoO6 octahedra that share corners with two equivalent HoO6 octahedra, corners with four equivalent SbO6 octahedra, and edges with six KO8 hexagonal bipyramids. The corner-sharing octahedra tilt angles range from 35–50°. There are a spread of Ho–O bond distances ranging from 2.23–2.26 Å. Sb is bonded to six O atoms to form SbO6 octahedra that share corners with two equivalent KO8 hexagonal bipyramids, corners with four equivalent HoO6 octahedra, and edges with six KO8 hexagonal bipyramids. The corner-sharing octahedral tilt angles are 35°. There is two shorter (1.96 Å) and four longer (2.00 Å) Sb–O bond length. There are six inequivalent O sites. In the first O site, O is bonded in a distorted rectangular see-saw-like geometry to three K and one Sb atom. In the second O site, O is bonded in a 2-coordinate geometry to two K, one Ho, and one Sb atom. In the third O site, O is bonded in a 2-coordinate geometry to two K, one Ho, and one Sb atom. In the fourth O site, O is bonded in a 2-coordinate geometry to two equivalent K and two equivalent Ho atoms. In the fifth O site, O is bonded in a distorted rectangular see-saw-like geometry to three K and one Sb atom. In the sixth O site, O is bonded in a 2-coordinate geometry to two equivalent K and two equivalent Ho atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K2YbSbO7 by Materials Project

K2YbSbO7 crystallizes in the orthorhombic Imm2 space group. The structure is three-dimensional. there are two inequivalent K sites. In the first K site, K is bonded to eight O atoms to form KO8 hexagonal bipyramids that share corners with two equivalent KO8 hexagonal bipyramids, corners with two equivalent SbO6 octahedra, edges with four equivalent KO8 hexagonal bipyramids, edges with two equivalent SbO6 octahedra, and edges with four equivalent YbO6 octahedra. The corner-sharing octahedral tilt angles are 52°. There are a spread of K–O bond distances ranging from 2.62–3.12 Å. In the second K site, K is bonded to eight O atoms to form distorted KO8 hexagonal bipyramids that share edges with six KO8 hexagonal bipyramids, edges with two equivalent YbO6 octahedra, and edges with four equivalent SbO6 octahedra. There are a spread of K–O bond distances ranging from 2.80–3.13 Å. Yb is bonded to six O atoms to form YbO6 octahedra that share corners with two equivalent YbO6 octahedra, corners with four equivalent SbO6 octahedra, and edges with six KO8 hexagonal bipyramids. The corner-sharing octahedra tilt angles range from 36–52°. There are a spread of Yb–O bond distances ranging from 2.24–2.32 Å. Sb is bonded to six O atoms to form SbO6 octahedra that share corners with two equivalent KO8 hexagonal bipyramids, corners with four equivalent YbO6 octahedra, and edges with six KO8 hexagonal bipyramids. The corner-sharing octahedra tilt angles range from 36–37°. There are a spread of Sb–O bond distances ranging from 1.98–2.00 Å. There are six inequivalent O sites. In the first O site, O is bonded in a distorted rectangular see-saw-like geometry to three K and one Sb atom. In the second O site, O is bonded in a 2-coordinate geometry to two K, one Yb, and one Sb atom. In the third O site, O is bonded in a 2-coordinate geometry to two K, one Yb, and one Sb atom. In the fourth O site, O is bonded in a 2-coordinate geometry to two equivalent K and two equivalent Yb atoms. In the fifth O site, O is bonded in a distorted rectangular see-saw-like geometry to three K and one Sb atom. In the sixth O site, O is bonded in a distorted bent 120 degrees geometry to two equivalent K and two equivalent Yb atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KMg30BO31 by Materials Project

KMg30BO31 crystallizes in the orthorhombic Pmm2 space group. The structure is three-dimensional. K is bonded to six O atoms to form KO6 octahedra that share corners with four MgO6 octahedra, edges with ten MgO6 octahedra, and edges with two equivalent MgO5 square pyramids. The corner-sharing octahedra tilt angles range from 0–1°. There are a spread of K–O bond distances ranging from 2.32–2.42 Å. There are sixteen inequivalent Mg sites. In the first Mg site, Mg is bonded in a T-shaped geometry to three O atoms. There are two shorter (1.92 Å) and one longer (2.13 Å) Mg–O bond lengths. In the second Mg site, Mg is bonded to six O atoms to form MgO6 octahedra that share corners with two equivalent KO6 octahedra, corners with two equivalent MgO6 octahedra, and edges with twelve MgO6 octahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are a spread of Mg–O bond distances ranging from 1.95–2.25 Å. In the third Mg site, Mg is bonded to six O atoms to form MgO6 octahedra that share corners with two equivalent KO6 octahedra, corners with two equivalent MgO6 octahedra, corners with two equivalent MgO5 square pyramids, edges with ten MgO6 octahedra, and edges with two equivalent MgO5 square pyramids. The corner-sharing octahedral tilt angles are 0°. There are a spread of Mg–O bond distances ranging from 1.95–2.23 Å. In the fourth Mg site, Mg is bonded to five O atoms to form MgO5 square pyramids that share corners with four MgO6 octahedra, corners with four MgO5 square pyramids, and edges with eight MgO6 octahedra. The corner-sharing octahedral tilt angles are 1°. There are a spread of Mg–O bond distances ranging from 2.10–2.16 Å. In the fifth Mg site, Mg is bonded to six O atoms to form a mixture of edge and corner-sharing MgO6 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. There are a spread of Mg–O bond distances ranging from 2.08–2.19 Å. In the sixth Mg site, Mg is bonded to six O atoms to form MgO6 octahedra that share corners with two equivalent MgO6 octahedra, corners with two equivalent MgO5 square pyramids, edges with ten MgO6 octahedra, and edges with two equivalent MgO5 square pyramids. The corner-sharing octahedral tilt angles are 2°. There are a spread of Mg–O bond distances ranging from 1.97–2.23 Å. In the seventh Mg site, Mg is bonded to six O atoms to form MgO6 octahedra that share corners with six MgO6 octahedra, an edgeedge with one KO6 octahedra, edges with seven MgO6 octahedra, and edges with two MgO5 square pyramids. The corner-sharing octahedra tilt angles range from 4–33°. There are a spread of Mg–O bond distances ranging from 2.03–2.31 Å. In the eighth Mg site, Mg is bonded to six O atoms to form MgO6 octahedra that share corners with six MgO6 octahedra, edges with nine MgO6 octahedra, and edges with three MgO5 square pyramids. The corner-sharing octahedra tilt angles range from 1–4°. There are a spread of Mg–O bond distances ranging from 2.13–2.18 Å. In the ninth Mg site, Mg is bonded to five O atoms to form MgO5 square pyramids that share corners with four MgO6 octahedra, corners with four MgO5 square pyramids, an edgeedge with one KO6 octahedra, and edges with seven MgO6 octahedra. The corner-sharing octahedra tilt angles range from 1–14°. There are a spread of Mg–O bond distances ranging from 2.15–2.17 Å. In the tenth Mg site, Mg is bonded to six O atoms to form MgO6 octahedra that share corners with four MgO6 octahedra, corners with two equivalent MgO5 square pyramids, edges with nine MgO6 octahedra, and edges with two equivalent MgO5 square pyramids. The corner-sharing octahedra tilt angles range from 3–14°. There are a spread of Mg–O bond distances ranging from 2.12–2.24 Å. In the eleventh Mg site, Mg is bonded to six O atoms to form MgO6 octahedra that share corners with four MgO6 octahedra, corners with two equivalent MgO5 square pyramids, an edgeedge with one KO6 octahedra, edges with nine MgO6 octahedra, and an edgeedge with one MgO5 square pyramid. The corner-sharing octahedra tilt angles range from 2–11°. There are a spread of Mg–O bond distances ranging from 2.13–2.17 Å. In the twelfth Mg site, Mg is bonded to six O atoms to form a mixture of edge and corner-sharing MgO6 octahedra. The corner-sharing octahedra tilt angles range from 3–6°. There are a spread of Mg–O bond distances ranging from 2.05–2.29 Å. In the thirteenth Mg site, Mg is bonded to six O atoms to form MgO6 octahedra that share corners with four MgO6 octahedra, corners with two equivalent MgO5 square pyramids, an edgeedge with one KO6 octahedra, edges with nine MgO6 octahedra, and edges with two equivalent MgO5 square pyramids. The corner-sharing octahedra tilt angles range from 1–10°. There are a spread of Mg–O bond distances ranging from 2.11–2.19 Å. In the fourteenth Mg site, Mg is bonded to five O atoms to form MgO5 square pyramids that share corners with four MgO6 octahedra, corners with four MgO5 square pyramids, and edges with seven MgO6 octahedra. The corner-sharing octahedra tilt angles range from 3–35°. There are a spread of Mg–O bond distances ranging from 1.99–2.36 Å. In the fifteenth Mg site, Mg is bonded to six O atoms to form MgO6 octahedra that share corners with six MgO6 octahedra, an edgeedge with one KO6 octahedra, and edges with eleven MgO6 octahedra. The corner-sharing octahedra tilt angles range from 1–10°. There are a spread of Mg–O bond distances ranging from 2.14–2.19 Å. In the sixteenth Mg site, Mg is bonded to six O atoms to form MgO6 octahedra that share corners with four MgO6 octahedra, corners with two equivalent MgO5 square pyramids, edges with nine MgO6 octahedra, and an edgeedge with one MgO5 square pyramid. The corner-sharing octahedra tilt angles range from 2–8°. There are a spread of Mg–O bond distances ranging from 2.07–2.24 Å. B is bonded in a distorted trigonal planar geometry to three O atoms. There is two shorter (1.45 Å) and one longer (1.47 Å) B–O bond length. There are seventeen inequivalent O sites. In the first O site, O is bonded to one K and five Mg atoms to form a mixture of edge and corner-sharing OKMg5 octahedra. The corner-sharing octahedra tilt angles range from 0–6°. In the second O site, O is bonded to six Mg atoms to form OMg6 octahedra that share corners with four OKMg5 octahedra, corners with two equivalent OMg5 square pyramids, edges with ten OMg6 octahedra, and edges with two equivalent OMg5 square pyramids. The corner-sharing octahedra tilt angles range from 0–6°. In the third O site, O is bonded to five Mg atoms to form OMg5 square pyramids that share corners with three OMg5B octahedra, corners with two equivalent OMg5 square pyramids, and edges with eight OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–9°. In the fourth O site, O is bonded to one K and five Mg atoms to form OKMg5 octahedra that share corners with six OKMg5 octahedra and edges with twelve OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–7°. In the fifth O site, O is bonded to six Mg atoms to form OMg6 octahedra that share corners with four OKMg5 octahedra and edges with ten OMg6 octahedra. The corner-sharing octahedra tilt angles range from 4–6°. In the sixth O site, O is bonded to six Mg atoms to form OMg6 octahedra that share corners with six OMg6 octahedra, edges with ten OMg6 octahedra, and edges with two equivalent OMg5 square pyramids. The corner-sharing octahedra tilt angles range from 0–7°. In the seventh O site, O is bonded to five Mg and one B atom to form distorted OMg5B octahedra that share corners with four OMg6 octahedra, corners with three OMg5 square pyramids, and edges with eight OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–6°. In the eighth O site, O is bonded to six Mg atoms to form OMg6 octahedra that share corners with six OMg6 octahedra, edges with eight OKMg5 octahedra, and edges with two OMg5 square pyramids. The corner-sharing octahedra tilt angles range from 1–8°. In the ninth O site, O is bonded to six Mg atoms to form OMg6 octahedra that share corners with six OMg6 octahedra, edges with ten OKMg5 octahedra, and an edgeedge with one OMg5 square pyramid. The corner-sharing octahedra tilt angles range from 2–7°. In the tenth O site, O is bonded to one K and five Mg atoms to form distorted OKMg5 octahedra that share corners with four OMg6 octahedra, corners with two equivalent OMg5 square pyramids, and edges with nine OKMg5 octahedra. The corner-sharing octahedra tilt angles range from 0–9°. In the eleventh O site, O is bonded to five Mg atoms to form OMg5 square pyramids that share corners with five OMg5B octahedra, corners with two OMg5 square pyramids, and edges with eight OMg6 octahedra. The corner-sharing octahedra tilt angles range from 4–93°. In the twelfth O site, O is bonded to six Mg atoms to form OMg6 octahedra that share corners with six OMg6 octahedra and edges with eleven OKMg5 octahedra. The corner-sharing octahedra tilt angles range from 0–9°. In the thirteenth O site, O is bonded to six Mg atoms to form OMg6 octahedra that share corners with four OMg6 octahedra, corners with two equivalent OMg5 square pyramids, edges with eleven OMg6 octahedra, and an edgeedge with one OMg5 square pyramid. The corner-sharing octahedra tilt angles range from 1–4°. In the fourteenth O site, O is bonded to one K and five Mg atoms to form OKMg5 octahedra that share corners with four OMg6 octahedra, edges with ten OKMg5 octahedra, and edges with two equivalent OMg5 square pyramids. The corner-sharing octahedra tilt angles range from 0–6°. In the fifteenth O site, O is bonded in a distorted single-bond geometry to four Mg and one B atom. In the sixteenth O site, O is bonded to six Mg atoms to form OMg6 octahedra that share corners with six OMg6 octahedra and edges with twelve OKMg5 octahedra. The corner-sharing octahedra tilt angles range from 0–6°. In the seventeenth O site, O is bonded to six Mg atoms to form OMg6 octahedra that share corners with four OMg6 octahedra, edges with ten OMg6 octahedra, and an edgeedge with one OMg5 square pyramid. The corner-sharing octahedral tilt angles are 1°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K2PtO6 by Materials Project

K2PtO6 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. K is bonded in a 4-coordinate geometry to seven O atoms. There are a spread of K–O bond distances ranging from 2.73–3.13 Å. Pt is bonded in a linear geometry to two equivalent O atoms. Both Pt–O bond lengths are 1.88 Å. There are three inequivalent O sites. In the first O site, O is bonded to four equivalent K and one O atom to form a mixture of edge and corner-sharing OK4O trigonal bipyramids. The O–O bond length is 1.40 Å. In the second O site, O is bonded in a 1-coordinate geometry to two equivalent K, one Pt, and one O atom. In the third O site, O is bonded in a distorted bent 150 degrees geometry to one K and one O atom. The O–O bond length is 1.28 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K4NpS2ClO10 by Materials Project

K4NpS2O10Cl crystallizes in the monoclinic P2/c space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded to seven O2- and one Cl1- atom to form distorted KClO7 hexagonal bipyramids that share a cornercorner with one KClO7 hexagonal bipyramid, a cornercorner with one SO4 tetrahedra, edges with four equivalent KClO7 hexagonal bipyramids, and edges with two equivalent SO4 tetrahedra. There are a spread of K–O bond distances ranging from 2.72–3.15 Å. The K–Cl bond length is 3.16 Å. In the second K1+ site, K1+ is bonded in a 7-coordinate geometry to five O2- and two equivalent Cl1- atoms. There are a spread of K–O bond distances ranging from 2.79–2.97 Å. There are one shorter (3.20 Å) and one longer (3.23 Å) K–Cl bond lengths. Np5+ is bonded in a distorted linear geometry to two equivalent O2- atoms. Both Np–O bond lengths are 1.85 Å. S6+ is bonded to four O2- atoms to form SO4 tetrahedra that share a cornercorner with one KClO7 hexagonal bipyramid and edges with two equivalent KClO7 hexagonal bipyramids. There are a spread of S–O bond distances ranging from 1.47–1.53 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to three equivalent K1+ and one S6+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to two K1+ and one S6+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to three K1+ and one Np5+ atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to one K1+ and one S6+ atom. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to three equivalent K1+ and one S6+ atom. Cl1- is bonded to six K1+ atoms to form edge-sharing ClK6 octahedra.

36 MATERIALS SCIENCE↗