Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “planar structures”

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 Li9V12Fe7O48 by Materials Project

Li9V12Fe7O48 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are nine inequivalent Li sites. In the first Li site, Li is bonded to six O atoms to form LiO6 octahedra that share a cornercorner with one FeO6 octahedra, a cornercorner with one LiO6 pentagonal pyramid, corners with six VO4 tetrahedra, and edges with two equivalent FeO6 octahedra. The corner-sharing octahedral tilt angles are 62°. There are a spread of Li–O bond distances ranging from 2.08–2.26 Å. In the second Li site, Li is bonded to six O atoms to form distorted LiO6 pentagonal pyramids that share a cornercorner with one LiO6 octahedra, a cornercorner with one FeO6 octahedra, corners with six VO4 tetrahedra, and edges with two equivalent LiO6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 62–71°. There are a spread of Li–O bond distances ranging from 2.10–2.19 Å. In the third Li site, Li is bonded to six O atoms to form distorted LiO6 pentagonal pyramids that share a cornercorner with one LiO6 octahedra, a cornercorner with one FeO6 octahedra, corners with six VO4 tetrahedra, and edges with two equivalent LiO6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 63–71°. There are a spread of Li–O bond distances ranging from 2.09–2.19 Å. In the fourth Li site, Li is bonded to six O atoms to form distorted LiO6 octahedra that share a cornercorner with one FeO6 octahedra, a cornercorner with one LiO6 pentagonal pyramid, corners with six VO4 tetrahedra, and edges with two equivalent FeO6 octahedra. The corner-sharing octahedral tilt angles are 59°. There are a spread of Li–O bond distances ranging from 2.04–2.32 Å. In the fifth Li site, Li is bonded to six O atoms to form LiO6 octahedra that share corners with six VO4 tetrahedra and faces with two equivalent FeO6 octahedra. There are a spread of Li–O bond distances ranging from 2.02–2.19 Å. In the sixth Li site, Li is bonded to six O atoms to form LiO6 octahedra that share corners with six VO4 tetrahedra and faces with two equivalent FeO6 octahedra. There are a spread of Li–O bond distances ranging from 2.05–2.17 Å. In the seventh Li site, Li is bonded to six O atoms to form distorted LiO6 octahedra that share a cornercorner with one FeO6 octahedra, a cornercorner with one LiO6 pentagonal pyramid, corners with six VO4 tetrahedra, and edges with two equivalent FeO6 octahedra. The corner-sharing octahedral tilt angles are 60°. There are a spread of Li–O bond distances ranging from 2.04–2.32 Å. In the eighth Li site, Li is bonded to six O atoms to form distorted LiO6 pentagonal pyramids that share corners with two FeO6 octahedra, corners with six VO4 tetrahedra, and edges with two equivalent LiO6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 62–64°. There are a spread of Li–O bond distances ranging from 2.11–2.20 Å. In the ninth Li site, Li is bonded to six O atoms to form distorted LiO6 pentagonal pyramids that share a cornercorner with one LiO6 octahedra, a cornercorner with one FeO6 octahedra, corners with six VO4 tetrahedra, and edges with two equivalent LiO6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 61–71°. There are a spread of Li–O bond distances ranging from 2.12–2.22 Å. There are twelve inequivalent V sites. In the first V site, V is bonded to four O atoms to form VO4 tetrahedra that share corners with two LiO6 octahedra and corners with six FeO6 octahedra. The corner-sharing octahedra tilt angles range from 23–64°. There are a spread of V–O bond distances ranging from 1.71–1.85 Å. In the second V site, V is bonded to four O atoms to form VO4 tetrahedra that share corners with two FeO6 octahedra, corners with three LiO6 octahedra, and corners with three LiO6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 28–57°. There are a spread of V–O bond distances ranging from 1.70–1.81 Å. In the third V site, V is bonded to four O atoms to form VO4 tetrahedra that share corners with two LiO6 octahedra, corners with three FeO6 octahedra, and corners with three LiO6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 27–60°. There are a spread of V–O bond distances ranging from 1.71–1.80 Å. In the fourth V site, V is bonded to four O atoms to form VO4 tetrahedra that share corners with two LiO6 octahedra, corners with three FeO6 octahedra, and corners with three LiO6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 33–61°. There are a spread of V–O bond distances ranging from 1.72–1.79 Å. In the fifth V site, V is bonded to four O atoms to form VO4 tetrahedra that share a cornercorner with one LiO6 octahedra, corners with four FeO6 octahedra, and corners with three LiO6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 32–60°. There are a spread of V–O bond distances ranging from 1.69–1.81 Å. In the sixth V site, V is bonded to four O atoms to form VO4 tetrahedra that share corners with four LiO6 octahedra and corners with four FeO6 octahedra. The corner-sharing octahedra tilt angles range from 29–65°. There are a spread of V–O bond distances ranging from 1.72–1.79 Å. In the seventh V site, V is bonded to four O atoms to form VO4 tetrahedra that share corners with four LiO6 octahedra and corners with four FeO6 octahedra. The corner-sharing octahedra tilt angles range from 29–65°. There are a spread of V–O bond distances ranging from 1.72–1.80 Å. In the eighth V site, V is bonded to four O atoms to form VO4 tetrahedra that share a cornercorner with one LiO6 octahedra, corners with four FeO6 octahedra, and corners with three LiO6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 32–59°. There are a spread of V–O bond distances ranging from 1.69–1.82 Å. In the ninth V site, V is bonded to four O atoms to form VO4 tetrahedra that share corners with two FeO6 octahedra, corners with three LiO6 octahedra, and corners with three LiO6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 33–56°. There are a spread of V–O bond distances ranging from 1.71–1.77 Å. In the tenth V site, V is bonded to four O atoms to form VO4 tetrahedra that share corners with two FeO6 octahedra, corners with three LiO6 octahedra, and corners with three LiO6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 28–57°. There are a spread of V–O bond distances ranging from 1.70–1.80 Å. In the eleventh V site, V is bonded to four O atoms to form VO4 tetrahedra that share corners with two LiO6 octahedra, corners with three FeO6 octahedra, and corners with three LiO6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 27–60°. There are a spread of V–O bond distances ranging from 1.71–1.80 Å. In the twelfth V site, V is bonded to four O atoms to form VO4 tetrahedra that share corners with three LiO6 octahedra and corners with five FeO6 octahedra. The corner-sharing octahedra tilt angles range from 22–63°. There are a spread of V–O bond distances ranging from 1.72–1.80 Å. There are seven inequivalent Fe sites. In the first Fe site, Fe is bonded to six O atoms to form FeO6 octahedra that share corners with six VO4 tetrahedra and faces with two equivalent LiO6 octahedra. There are a spread of Fe–O bond distances ranging from 1.97–2.08 Å. In the second Fe site, Fe is bonded to six O atoms to form FeO6 octahedra that share a cornercorner with one LiO6 octahedra, a cornercorner with one LiO6 pentagonal pyramid, corners with six VO4 tetrahedra, and edges with two equivalent FeO6 octahedra. The corner-sharing octahedral tilt angles are 62°. There are a spread of Fe–O bond distances ranging from 1.97–2.12 Å. In the third Fe site, Fe is bonded to six O atoms to form FeO6 octahedra that share a cornercorner with one LiO6 octahedra, a cornercorner with one LiO6 pentagonal pyramid, corners with six VO4 tetrahedra, and edges with two equivalent LiO6 octahedra. The corner-sharing octahedral tilt angles are 59°. There are a spread of Fe–O bond distances ranging from 1.95–2.06 Å. In the fourth Fe site, Fe is bonded to six O atoms to form FeO6 octahedra that share a cornercorner with one LiO6 octahedra, a cornercorner with one LiO6 pentagonal pyramid, corners with six VO4 tetrahedra, and edges with two equivalent LiO6 octahedra. The corner-sharing octahedral tilt angles are 60°. There are a spread of Fe–O bond distances ranging from 1.96–2.06 Å. In the fifth Fe site, Fe is bonded to six O atoms to form FeO6 octahedra that share a cornercorner with one FeO6 octahedra, a cornercorner with one LiO6 pentagonal pyramid, corners with six VO4 tetrahedra, and edges with two equivalent LiO6 octahedra. The corner-sharing octahedral tilt angles are 57°. There are a spread of Fe–O bond distances ranging from 1.97–2.09 Å. In the sixth Fe site, Fe is bonded to six O atoms to form FeO6 octahedra that share a cornercorner with one FeO6 octahedra, a cornercorner with one LiO6 pentagonal pyramid, corners with six VO4 tetrahedra, and edges with two equivalent FeO6 octahedra. The corner-sharing octahedral tilt angles are 57°. There are a spread of Fe–O bond distances ranging from 1.95–2.11 Å. In the seventh Fe site, Fe is bonded to six O atoms to form FeO6 octahedra that share corners with six VO4 tetrahedra and faces with two equivalent LiO6 octahedra. There are a spread of Fe–O bond distances ranging from 1.97–2.14 Å. There are forty-eight inequivalent O sites. In the first O site, O is bonded in a trigonal planar geometry to one Li, one V, and one Fe atom. In the second O site, O is bonded in a trigonal planar geometry to two Li and one V atom. In the third O site, O is bonded in a trigonal planar geometry to one Li, one V, and one Fe atom. In the fourth O site, O is bonded in a distorted trigonal planar geometry to two Li and one V atom. In the fifth O site, O is bonded in a 3-coordinate geometry to two Li and one V atom. In the sixth O site, O is bonded in a distorted trigonal planar geometry to one Li, one V, and one Fe atom. In the seventh O site, O is bonded in a 3-coordinate geometry to one Li, one V, and one Fe atom. In the eighth O site, O is bonded in a distorted trigonal planar geometry to one V and two Fe atoms. In the ninth O site, O is bonded in a distorted trigonal planar geometry to one Li, one V, and one Fe atom. In the tenth O site, O is bonded in a 3-coordinate geometry to one Li, one V, and one Fe atom. In the eleventh O site, O is bonded in a 3-coordinate geometry to one Li, one V, and one Fe atom. In the twelfth O site, O is bonded in a 3-coordinate geometry to one Li, one V, and one Fe atom. In the thirteenth O site, O is bonded in a 3-coordinate geometry to one Li, one V, and one Fe atom. In the fourteenth O site, O is bonded in a 3-coordinate geometry to one Li, one V, and one Fe atom. In the fifteenth O site, O is bonded in a 3-coordinate geometry to one Li, one V, and one Fe atom. In the sixteenth O site, O is bonded in a distorted trigonal planar geometry to one Li, one V, and one Fe atom. In the seventeenth O site, O is bonded in a distorted trigonal planar geometry to one Li, one V, and one Fe atom. In the eighteenth O site, O is bonded in a distorted trigonal planar geometry to one V and two Fe atoms. In the nineteenth O site, O is bonded in a 3-coordinate geometry to one Li, one V, and one Fe atom. In the twentieth O site, O is bonded in a distorted trigonal planar geometry to two Li and one V atom. In the twenty-first O site, O is bonded in a 3-coordinate geometry to two Li and one V atom. In the twenty-second O site, O is bonded in a trigonal planar geometry to one Li, one V, and one Fe atom. In the twenty-third O site, O is bonded in a trigonal planar geometry to two Li and one V atom. In the twenty-fourth O site, O is bonded in a trigonal planar geometry to one Li, one V, and one Fe atom. In the twenty-fifth O site, O is bonded in a trigonal planar geometry to one

36 MATERIALS SCIENCE↗

Materials Data on LaNi2B2C by Materials Project

LaNi2B2C crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. La2+ is bonded in a square co-planar geometry to four equivalent C4- atoms. All La–C bond lengths are 2.67 Å. Ni1+ is bonded to four equivalent B atoms to form a mixture of distorted corner and edge-sharing NiB4 tetrahedra. All Ni–B bond lengths are 2.12 Å. B is bonded in a distorted single-bond geometry to four equivalent Ni1+ and one C4- atom. The B–C bond length is 1.49 Å. C4- is bonded in a distorted linear geometry to four equivalent La2+ and two equivalent B atoms.

36 MATERIALS SCIENCE↗

Materials Data on CeB2Pt2C by Materials Project

CePt2B2C crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ce4+ is bonded in a square co-planar geometry to four equivalent C4- atoms. All Ce–C bond lengths are 2.71 Å. Pt is bonded to four equivalent B atoms to form a mixture of edge and corner-sharing PtB4 tetrahedra. All Pt–B bond lengths are 2.27 Å. B is bonded in a distorted single-bond geometry to four equivalent Pt and one C4- atom. The B–C bond length is 1.49 Å. C4- is bonded in a distorted linear geometry to four equivalent Ce4+ and two equivalent B atoms.

36 MATERIALS SCIENCE↗

Materials Data on CeB2Pd2C by Materials Project

CePd2B2C crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ce4+ is bonded in a square co-planar geometry to four equivalent C2- atoms. All Ce–C bond lengths are 2.71 Å. Pd2+ is bonded to four equivalent B3- atoms to form a mixture of corner and edge-sharing PdB4 tetrahedra. All Pd–B bond lengths are 2.26 Å. B3- is bonded in a distorted single-bond geometry to four equivalent Pd2+ and one C2- atom. The B–C bond length is 1.48 Å. C2- is bonded in a distorted linear geometry to four equivalent Ce4+ and two equivalent B3- atoms.

36 MATERIALS SCIENCE↗

Materials Data on MgF2 by Materials Project

MgF2 crystallizes in the cubic Pa-3 space group. The structure is three-dimensional. Mg2+ is bonded to six equivalent F1- atoms to form corner-sharing MgF6 octahedra. The corner-sharing octahedral tilt angles are 60°. All Mg–F bond lengths are 2.05 Å. F1- is bonded in a trigonal planar geometry to three equivalent Mg2+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on PdF2 by Materials Project

PdF2 crystallizes in the cubic Pa-3 space group. The structure is three-dimensional. Pd2+ is bonded to six equivalent F1- atoms to form corner-sharing PdF6 octahedra. The corner-sharing octahedral tilt angles are 60°. All Pd–F bond lengths are 2.19 Å. F1- is bonded in a trigonal planar geometry to three equivalent Pd2+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on GeO2 by Materials Project

GeO2 crystallizes in the cubic Pa-3 space group. The structure is three-dimensional. Ge4+ is bonded to six equivalent O2- atoms to form corner-sharing GeO6 octahedra. The corner-sharing octahedral tilt angles are 60°. All Ge–O bond lengths are 1.95 Å. O2- is bonded in a trigonal planar geometry to three equivalent Ge4+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on Sb2Pt by Materials Project

PtSb2 crystallizes in the cubic Pa-3 space group. The structure is three-dimensional. Pt2- is bonded to six equivalent Sb1+ atoms to form corner-sharing PtSb6 octahedra. The corner-sharing octahedral tilt angles are 63°. All Pt–Sb bond lengths are 2.71 Å. Sb1+ is bonded in a trigonal planar geometry to three equivalent Pt2- atoms.

36 MATERIALS SCIENCE↗

Materials Data on SnO2 by Materials Project

SnO2 crystallizes in the cubic Pa-3 space group. The structure is three-dimensional. Sn4+ is bonded to six equivalent O2- atoms to form corner-sharing SnO6 octahedra. The corner-sharing octahedral tilt angles are 60°. All Sn–O bond lengths are 2.11 Å. O2- is bonded in a trigonal planar geometry to three equivalent Sn4+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on SiO2 by Materials Project

SiO2 crystallizes in the cubic Pa-3 space group. The structure is three-dimensional. Si4+ is bonded to six equivalent O2- atoms to form corner-sharing SiO6 octahedra. The corner-sharing octahedral tilt angles are 60°. All Si–O bond lengths are 1.83 Å. O2- is bonded in a trigonal planar geometry to three equivalent Si4+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on RuO2 by Materials Project

RuO2 crystallizes in the cubic Pa-3 space group. The structure is three-dimensional. Ru4+ is bonded to six equivalent O2- atoms to form corner-sharing RuO6 octahedra. The corner-sharing octahedral tilt angles are 61°. All Ru–O bond lengths are 2.01 Å. O2- is bonded in a trigonal planar geometry to three equivalent Ru4+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on OsO2 by Materials Project

OsO2 crystallizes in the cubic Pa-3 space group. The structure is three-dimensional. Os4+ is bonded to six equivalent O2- atoms to form corner-sharing OsO6 octahedra. The corner-sharing octahedral tilt angles are 60°. All Os–O bond lengths are 2.02 Å. O2- is bonded in a trigonal planar geometry to three equivalent Os4+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on ReN2 by Materials Project

ReN2 crystallizes in the cubic Pa-3 space group. The structure is three-dimensional. Re6+ is bonded to six equivalent N3- atoms to form corner-sharing ReN6 octahedra. The corner-sharing octahedral tilt angles are 61°. All Re–N bond lengths are 2.04 Å. N3- is bonded in a trigonal planar geometry to three equivalent Re6+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on PtO2 by Materials Project

PtO2 crystallizes in the cubic Pa-3 space group. The structure is three-dimensional. Pt4+ is bonded to six equivalent O2- atoms to form corner-sharing PtO6 octahedra. The corner-sharing octahedral tilt angles are 60°. All Pt–O bond lengths are 2.04 Å. O2- is bonded in a trigonal planar geometry to three equivalent Pt4+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on IrO2 by Materials Project

IrO2 crystallizes in the cubic Pa-3 space group. The structure is three-dimensional. Ir4+ is bonded to six equivalent O2- atoms to form corner-sharing IrO6 octahedra. The corner-sharing octahedral tilt angles are 60°. All Ir–O bond lengths are 2.02 Å. O2- is bonded in a trigonal planar geometry to three equivalent Ir4+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on TiO2 by Materials Project

TiO2 crystallizes in the cubic Pa-3 space group. The structure is three-dimensional. Ti4+ is bonded to six equivalent O2- atoms to form corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles are 60°. All Ti–O bond lengths are 2.00 Å. O2- is bonded in a trigonal planar geometry to three equivalent Ti4+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on TiS2 by Materials Project

TiS2 crystallizes in the cubic Pa-3 space group. The structure is three-dimensional. Ti4+ is bonded to six equivalent S2- atoms to form corner-sharing TiS6 octahedra. The corner-sharing octahedral tilt angles are 61°. All Ti–S bond lengths are 2.47 Å. S2- is bonded in a trigonal planar geometry to three equivalent Ti4+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on MgH2 by Materials Project

MgH2 crystallizes in the cubic Pa-3 space group. The structure is three-dimensional. Mg2+ is bonded to six equivalent H1- atoms to form corner-sharing MgH6 octahedra. The corner-sharing octahedral tilt angles are 60°. All Mg–H bond lengths are 1.97 Å. H1- is bonded in a trigonal planar geometry to three equivalent Mg2+ atoms.

36 MATERIALS SCIENCE↗