Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “F-Na-Pd”

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.

4 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Na2PdF4 by Materials Project

Na2PdF4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Na1+ is bonded to six F1- atoms to form a mixture of distorted edge and corner-sharing NaF6 octahedra. The corner-sharing octahedra tilt angles range from 64–68°. There are a spread of Na–F bond distances ranging from 2.29–2.49 Å. Pd2+ is bonded in a square co-planar geometry to four F1- atoms. All Pd–F bond lengths are 2.01 Å. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded to three equivalent Na1+ and one Pd2+ atom to form a mixture of distorted edge and corner-sharing FNa3Pd trigonal pyramids. In the second F1- site, F1- is bonded to three equivalent Na1+ and one Pd2+ atom to form a mixture of edge and corner-sharing FNa3Pd tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Na3PdF6 by Materials Project

Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Na3Pd5F12 by Materials Project

Na3Pd5F12 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are two inequivalent Na sites. In the first Na site, Na is bonded in a body-centered cubic geometry to eight F atoms. There are a spread of Na–F bond distances ranging from 2.46–2.71 Å. In the second Na site, Na is bonded to six F atoms to form NaF6 octahedra that share corners with two equivalent PdF6 octahedra and edges with two equivalent NaF6 octahedra. The corner-sharing octahedral tilt angles are 69°. There are a spread of Na–F bond distances ranging from 2.27–2.55 Å. There are three inequivalent Pd sites. In the first Pd site, Pd is bonded in a rectangular see-saw-like geometry to four F atoms. There are a spread of Pd–F bond distances ranging from 2.00–2.04 Å. In the second Pd site, Pd is bonded in a square co-planar geometry to four equivalent F atoms. All Pd–F bond lengths are 2.04 Å. In the third Pd site, Pd is bonded to six F atoms to form PdF6 octahedra that share corners with two equivalent NaF6 octahedra and edges with two equivalent PdF6 octahedra. The corner-sharing octahedral tilt angles are 69°. There are a spread of Pd–F bond distances ranging from 2.23–2.31 Å. There are five inequivalent F sites. In the first F site, F is bonded in a distorted trigonal planar geometry to two equivalent Na and one Pd atom. In the second F site, F is bonded to one Na and three Pd atoms to form distorted FNaPd3 trigonal pyramids that share corners with five FNa3Pd tetrahedra, corners with three equivalent FNaPd3 trigonal pyramids, and edges with three FNa3Pd tetrahedra. In the third F site, F is bonded to three Na and one Pd atom to form FNa3Pd tetrahedra that share corners with five FNa3Pd tetrahedra, a cornercorner with one FNaPd3 trigonal pyramid, edges with three FNa3Pd tetrahedra, and an edgeedge with one FNaPd3 trigonal pyramid. In the fourth F site, F is bonded to two Na and two Pd atoms to form FNa2Pd2 tetrahedra that share corners with eight FNa3Pd tetrahedra, corners with two equivalent FNaPd3 trigonal pyramids, edges with two FNa3Pd tetrahedra, and an edgeedge with one FNaPd3 trigonal pyramid. In the fifth F site, F is bonded in a distorted trigonal planar geometry to three Pd atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Na2PdF6 by Materials Project

Na2PdF6 is Hydrophilite-derived structured and crystallizes in the trigonal P321 space group. The structure is three-dimensional. there are two inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded to six F1- atoms to form distorted NaF6 octahedra that share corners with two equivalent PdF6 octahedra, corners with six equivalent NaF6 octahedra, and edges with two equivalent PdF6 octahedra. The corner-sharing octahedra tilt angles range from 50–58°. There are two shorter (2.25 Å) and four longer (2.35 Å) Na–F bond lengths. In the second Na1+ site, Na1+ is bonded to six F1- atoms to form NaF6 octahedra that share corners with four equivalent PdF6 octahedra, corners with six equivalent NaF6 octahedra, and an edgeedge with one PdF6 octahedra. The corner-sharing octahedra tilt angles range from 46–58°. There are a spread of Na–F bond distances ranging from 2.33–2.45 Å. There are two inequivalent Pd4+ sites. In the first Pd4+ site, Pd4+ is bonded to six F1- atoms to form PdF6 octahedra that share corners with six equivalent NaF6 octahedra and edges with three equivalent NaF6 octahedra. The corner-sharing octahedral tilt angles are 46°. All Pd–F bond lengths are 1.95 Å. In the second Pd4+ site, Pd4+ is bonded to six equivalent F1- atoms to form PdF6 octahedra that share corners with six equivalent NaF6 octahedra and edges with three equivalent NaF6 octahedra. The corner-sharing octahedral tilt angles are 50°. All Pd–F bond lengths are 1.95 Å. There are three inequivalent F1- sites. In the first F1- site, F1- is bonded in a distorted trigonal planar geometry to two Na1+ and one Pd4+ atom. In the second F1- site, F1- is bonded in a distorted trigonal planar geometry to two Na1+ and one Pd4+ atom. In the third F1- site, F1- is bonded in a distorted trigonal planar geometry to two Na1+ and one Pd4+ atom.

36 MATERIALS SCIENCE↗