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 1,765 records · Page 98

Materials Data on VO2 by Materials Project

VO2 is Rutile structured and crystallizes in the tetragonal P4_2/mnm space group. The structure is three-dimensional. V4+ is bonded to six equivalent O2- atoms to form a mixture of corner and edge-sharing VO6 octahedra. The corner-sharing octahedral tilt angles are 50°. There is two shorter (1.91 Å) and four longer (1.99 Å) V–O bond length. O2- is bonded in a distorted trigonal planar geometry to three equivalent V4+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on WO2 by Materials Project

WO2 is Hydrophilite-like structured and crystallizes in the tetragonal P4_2/mnm space group. The structure is three-dimensional. W4+ is bonded to six equivalent O2- atoms to form a mixture of edge and corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles are 51°. There are two shorter (2.04 Å) and four longer (2.11 Å) W–O bond lengths. O2- is bonded in a distorted trigonal planar geometry to three equivalent W4+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on TeO2 by Materials Project

TeO2 is Rutile structured and crystallizes in the tetragonal P4_2/mnm space group. The structure is three-dimensional. Te4+ is bonded to six equivalent O2- atoms to form a mixture of corner and edge-sharing TeO6 octahedra. The corner-sharing octahedral tilt angles are 50°. There are two shorter (2.18 Å) and four longer (2.23 Å) Te–O bond lengths. O2- is bonded in a distorted trigonal planar geometry to three equivalent Te4+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on P2Os by Materials Project

OsP2 is zeta iron carbide structured and crystallizes in the orthorhombic Pnnm space group. The structure is three-dimensional. Os2- is bonded to six equivalent P1+ atoms to form a mixture of corner and edge-sharing OsP6 octahedra. The corner-sharing octahedral tilt angles are 57°. There are two shorter (2.36 Å) and four longer (2.40 Å) Os–P bond lengths. P1+ is bonded in a distorted trigonal planar geometry to three equivalent Os2- atoms.

36 MATERIALS SCIENCE↗

Materials Data on MgH2 by Materials Project

MgH2 is Hydrophilite-like structured and crystallizes in the orthorhombic Pbcn space group. The structure is three-dimensional. Mg2+ is bonded to six equivalent H1- atoms to form a mixture of edge and corner-sharing MgH6 octahedra. The corner-sharing octahedra tilt angles range from 52–53°. There are a spread of Mg–H bond distances ranging from 1.91–2.01 Å. H1- is bonded in a trigonal planar geometry to three equivalent Mg2+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on MnO2 by Materials Project

MnO2 is Hydrophilite structured and crystallizes in the orthorhombic Pnnm space group. The structure is three-dimensional. Mn4+ is bonded to six equivalent O2- atoms to form a mixture of edge and corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 52°. There is four shorter (1.92 Å) and two longer (1.94 Å) Mn–O bond length. O2- is bonded in a distorted trigonal planar geometry to three equivalent Mn4+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on GeO2 by Materials Project

GeO2 is Rutile structured and crystallizes in the tetragonal P4_2/mnm space group. The structure is three-dimensional. Ge4+ is bonded to six equivalent O2- atoms to form a mixture of edge and corner-sharing GeO6 octahedra. The corner-sharing octahedral tilt angles are 50°. There is four shorter (1.90 Å) and two longer (1.95 Å) Ge–O bond length. O2- is bonded in a distorted trigonal planar geometry to three equivalent Ge4+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on MnO2 by Materials Project

MnO2 is Rutile structured and crystallizes in the tetragonal P4_2/mnm space group. The structure is three-dimensional. Mn4+ is bonded to six equivalent O2- atoms to form a mixture of edge and corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 50°. There is four shorter (1.91 Å) and two longer (1.93 Å) Mn–O bond length. O2- is bonded in a distorted trigonal planar geometry to three equivalent Mn4+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on MoO2 by Materials Project

MoO2 is Rutile structured and crystallizes in the tetragonal P4_2/mnm space group. The structure is three-dimensional. Mo4+ is bonded to six equivalent O2- atoms to form a mixture of corner and edge-sharing MoO6 octahedra. The corner-sharing octahedral tilt angles are 51°. There are two shorter (2.02 Å) and four longer (2.10 Å) Mo–O bond lengths. O2- is bonded in a distorted trigonal planar geometry to three equivalent Mo4+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on FeF2 by Materials Project

FeF2 is Hydrophilite structured and crystallizes in the tetragonal P4_2/mnm space group. The structure is three-dimensional. Fe2+ is bonded to six equivalent F1- atoms to form a mixture of corner and edge-sharing FeF6 octahedra. The corner-sharing octahedral tilt angles are 51°. There are two shorter (2.04 Å) and four longer (2.15 Å) Fe–F bond lengths. F1- is bonded in a distorted trigonal planar geometry to three equivalent Fe2+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on NiF2 by Materials Project

NiF2 is Rutile structured and crystallizes in the tetragonal P4_2/mnm space group. The structure is three-dimensional. Ni2+ is bonded to six equivalent F1- atoms to form a mixture of edge and corner-sharing NiF6 octahedra. The corner-sharing octahedral tilt angles are 50°. There are two shorter (2.02 Å) and four longer (2.03 Å) Ni–F bond lengths. F1- is bonded in a distorted trigonal planar geometry to three equivalent Ni2+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on Pu by Materials Project

Pu is beta Sn-like structured and crystallizes in the hexagonal P6_3/m space group. The structure is zero-dimensional and consists of two Pu clusters. there are two inequivalent Pu sites. In the first Pu site, Pu is bonded in a distorted single-bond geometry to one Pu atom. The Pu–Pu bond length is 2.50 Å. In the second Pu site, Pu is bonded in a distorted trigonal planar geometry to three equivalent Pu atoms.

36 MATERIALS SCIENCE↗

Materials Data on RhI2 by Materials Project

RhI2 is Rutile structured and crystallizes in the tetragonal P4_2/mnm space group. The structure is three-dimensional. Rh is bonded to six equivalent I atoms to form a mixture of edge and corner-sharing RhI6 octahedra. The corner-sharing octahedral tilt angles are 50°. There are four shorter (2.74 Å) and two longer (2.76 Å) Rh–I bond lengths. I is bonded in a distorted trigonal planar geometry to three equivalent Rh atoms.

36 MATERIALS SCIENCE↗

Materials Data on KF2 by Materials Project

KF2 is zeta iron carbide-like structured and crystallizes in the tetragonal P4_2/mnm space group. The structure is three-dimensional. K is bonded to six equivalent F atoms to form a mixture of edge and corner-sharing KF6 octahedra. The corner-sharing octahedral tilt angles are 69°. There are two shorter (2.59 Å) and four longer (2.71 Å) K–F bond lengths. F is bonded in a distorted trigonal planar geometry to three equivalent K atoms.

36 MATERIALS SCIENCE↗

Materials Data on WN2 by Materials Project

WN2 is Rutile structured and crystallizes in the tetragonal P4_2/mnm space group. The structure is three-dimensional. W6+ is bonded to six equivalent N3- atoms to form a mixture of edge and corner-sharing WN6 octahedra. The corner-sharing octahedral tilt angles are 48°. There are four shorter (2.01 Å) and two longer (2.08 Å) W–N bond lengths. N3- is bonded in a distorted trigonal planar geometry to three equivalent W6+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on MgF2 by Materials Project

MgF2 is Hydrophilite structured and crystallizes in the orthorhombic Pnnm space group. The structure is three-dimensional. Mg2+ is bonded to six equivalent F1- atoms to form a mixture of edge and corner-sharing MgF6 octahedra. The corner-sharing octahedral tilt angles are 50°. There are two shorter (2.02 Å) and four longer (2.03 Å) Mg–F bond lengths. F1- is bonded in a distorted trigonal planar geometry to three equivalent Mg2+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on GeO2 by Materials Project

GeO2 is Rutile structured and crystallizes in the orthorhombic Pnnm space group. The structure is three-dimensional. Ge4+ is bonded to six equivalent O2- atoms to form a mixture of corner and edge-sharing GeO6 octahedra. The corner-sharing octahedral tilt angles are 50°. There is four shorter (1.90 Å) and two longer (1.95 Å) Ge–O bond length. O2- is bonded in a distorted trigonal planar geometry to three equivalent Ge4+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on Sr3MgO4 by Materials Project

Sr3MgO4 crystallizes in the orthorhombic Cmmm space group. The structure is three-dimensional. there are two inequivalent Sr2+ sites. In the first Sr2+ site, Sr2+ is bonded in a 4-coordinate geometry to six O2- atoms. There are four shorter (2.41 Å) and two longer (3.05 Å) Sr–O bond lengths. In the second Sr2+ site, Sr2+ is bonded in a square co-planar geometry to four equivalent O2- atoms. All Sr–O bond lengths are 2.54 Å. Mg2+ is bonded in a square co-planar geometry to four equivalent O2- atoms. All Mg–O bond lengths are 2.16 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to four Sr2+ and two equivalent Mg2+ atoms. In the second O2- site, O2- is bonded in a square co-planar geometry to four equivalent Sr2+ atoms.

36 MATERIALS SCIENCE↗