Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Na-O-Pt-Sr”

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.

Materials Data on NaSr11(PtO6)3 by Materials Project

NaSr11(PtO6)3 crystallizes in the trigonal P321 space group. The structure is three-dimensional. Na1+ is bonded in a 6-coordinate geometry to six O2- atoms. All Na–O bond lengths are 2.45 Å. There are seven inequivalent Sr2+ sites. In the first Sr2+ site, Sr2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Sr–O bond distances ranging from 2.62–2.79 Å. In the second Sr2+ site, Sr2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Sr–O bond distances ranging from 2.57–2.86 Å. In the third Sr2+ site, Sr2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Sr–O bond distances ranging from 2.60–2.80 Å. In the fourth Sr2+ site, Sr2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Sr–O bond distances ranging from 2.61–2.77 Å. In the fifth Sr2+ site, Sr2+ is bonded in a 6-coordinate geometry to six equivalent O2- atoms. All Sr–O bond lengths are 2.48 Å. In the sixth Sr2+ site, Sr2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are three shorter (2.47 Å) and three longer (2.48 Å) Sr–O bond lengths. In the seventh Sr2+ site, Sr2+ is bonded in a 6-coordinate geometry to six equivalent O2- atoms. All Sr–O bond lengths are 2.47 Å. There are three inequivalent Pt+4.33+ sites. In the first Pt+4.33+ site, Pt+4.33+ is bonded in an octahedral geometry to six O2- atoms. There are three shorter (2.05 Å) and three longer (2.09 Å) Pt–O bond lengths. In the second Pt+4.33+ site, Pt+4.33+ is bonded in an octahedral geometry to six O2- atoms. There are three shorter (2.06 Å) and three longer (2.09 Å) Pt–O bond lengths. In the third Pt+4.33+ site, Pt+4.33+ is bonded in an octahedral geometry to six O2- atoms. All Pt–O bond lengths are 2.08 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded to five Sr2+ and one Pt+4.33+ atom to form a mixture of distorted edge, corner, and face-sharing OSr5Pt octahedra. The corner-sharing octahedra tilt angles range from 0–65°. In the second O2- site, O2- is bonded to five Sr2+ and one Pt+4.33+ atom to form distorted OSr5Pt octahedra that share corners with fifteen OSr5Pt octahedra, edges with four OSr5Pt octahedra, and faces with five ONaSr4Pt octahedra. The corner-sharing octahedra tilt angles range from 0–65°. In the third O2- site, O2- is bonded to five Sr2+ and one Pt+4.33+ atom to form a mixture of distorted edge, corner, and face-sharing OSr5Pt octahedra. The corner-sharing octahedra tilt angles range from 0–63°. In the fourth O2- site, O2- is bonded to five Sr2+ and one Pt+4.33+ atom to form a mixture of distorted edge, corner, and face-sharing OSr5Pt octahedra. The corner-sharing octahedra tilt angles range from 1–64°. In the fifth O2- site, O2- is bonded to one Na1+, four Sr2+, and one Pt+4.33+ atom to form a mixture of distorted edge, corner, and face-sharing ONaSr4Pt octahedra. The corner-sharing octahedra tilt angles range from 0–63°. In the sixth O2- site, O2- is bonded to one Na1+, four Sr2+, and one Pt+4.33+ atom to form a mixture of distorted edge, corner, and face-sharing ONaSr4Pt octahedra. The corner-sharing octahedra tilt angles range from 1–63°.

36 MATERIALS SCIENCE↗