Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “NaCuO2”

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.

3 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on NaCuO2 by Materials Project

NaCuO2 is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. The structure is three-dimensional. Na1+ is bonded to six equivalent O2- atoms to form NaO6 octahedra that share corners with six equivalent CuO6 octahedra, edges with six equivalent NaO6 octahedra, and edges with six equivalent CuO6 octahedra. The corner-sharing octahedral tilt angles are 11°. All Na–O bond lengths are 2.36 Å. Cu3+ is bonded to six equivalent O2- atoms to form CuO6 octahedra that share corners with six equivalent NaO6 octahedra, edges with six equivalent NaO6 octahedra, and edges with six equivalent CuO6 octahedra. The corner-sharing octahedral tilt angles are 11°. All Cu–O bond lengths are 2.05 Å. O2- is bonded to three equivalent Na1+ and three equivalent Cu3+ atoms to form a mixture of corner and edge-sharing ONa3Cu3 octahedra. The corner-sharing octahedral tilt angles are 0°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NaCuO2 by Materials Project

NaCuO2 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are three inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded to six O2- atoms to form edge-sharing NaO6 octahedra. There are a spread of Na–O bond distances ranging from 2.35–2.48 Å. In the second Na1+ site, Na1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Na–O bond distances ranging from 2.29–2.59 Å. In the third Na1+ site, Na1+ is bonded to six O2- atoms to form edge-sharing NaO6 octahedra. There are a spread of Na–O bond distances ranging from 2.36–2.45 Å. There are two inequivalent Cu3+ sites. In the first Cu3+ site, Cu3+ is bonded in a square co-planar geometry to four O2- atoms. There is one shorter (1.84 Å) and three longer (1.86 Å) Cu–O bond length. In the second Cu3+ site, Cu3+ is bonded in a square co-planar geometry to four O2- atoms. There are a spread of Cu–O bond distances ranging from 1.84–1.86 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded to three Na1+ and two Cu3+ atoms to form a mixture of distorted edge and corner-sharing ONa3Cu2 trigonal bipyramids. In the second O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to two Na1+ and two Cu3+ atoms. In the third O2- site, O2- is bonded to three Na1+ and two Cu3+ atoms to form a mixture of distorted edge and corner-sharing ONa3Cu2 trigonal bipyramids. In the fourth O2- site, O2- is bonded to three Na1+ and two Cu3+ atoms to form a mixture of distorted edge and corner-sharing ONa3Cu2 square pyramids.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NaCuO2 by Materials Project

NaCuO2 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Na1+ is bonded in a 6-coordinate geometry to six equivalent O2- atoms. There are two shorter (2.37 Å) and four longer (2.51 Å) Na–O bond lengths. Cu3+ is bonded in a rectangular see-saw-like geometry to four equivalent O2- atoms. All Cu–O bond lengths are 1.85 Å. O2- is bonded to three equivalent Na1+ and two equivalent Cu3+ atoms to form a mixture of distorted corner, edge, and face-sharing ONa3Cu2 trigonal bipyramids.

36 MATERIALS SCIENCE↗