Search NASA⌕ Search

SEARCH · Search NASA

Results for “Ce-O-S”

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 Ce4S3O4 by Materials Project

Ce4S3O4 crystallizes in the orthorhombic Pbam space group. The structure is three-dimensional. there are two inequivalent Ce+3.50+ sites. In the first Ce+3.50+ site, Ce+3.50+ is bonded in a 3-coordinate geometry to five S2- and three O2- atoms. There are a spread of Ce–S bond distances ranging from 2.97–3.07 Å. There are one shorter (2.28 Å) and two longer (2.38 Å) Ce–O bond lengths. In the second Ce+3.50+ site, Ce+3.50+ is bonded in a 7-coordinate geometry to three S2- and four O2- atoms. There are one shorter (2.84 Å) and two longer (2.99 Å) Ce–S bond lengths. There are a spread of Ce–O bond distances ranging from 2.20–2.46 Å. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a 5-coordinate geometry to five Ce+3.50+ atoms. In the second S2- site, S2- is bonded in a 12-coordinate geometry to six Ce+3.50+ atoms. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three Ce+3.50+ atoms. In the second O2- site, O2- is bonded to four Ce+3.50+ atoms to form a mixture of distorted edge and corner-sharing OCe4 tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ce2SO2 by Materials Project

Ce2O2S crystallizes in the trigonal P-3m1 space group. The structure is three-dimensional. Ce3+ is bonded in a 7-coordinate geometry to three equivalent S2- and four equivalent O2- atoms. All Ce–S bond lengths are 2.97 Å. There are three shorter (2.36 Å) and one longer (2.37 Å) Ce–O bond lengths. S2- is bonded to six equivalent Ce3+ atoms to form distorted SCe6 octahedra that share corners with twelve equivalent OCe4 tetrahedra, edges with six equivalent SCe6 octahedra, and edges with six equivalent OCe4 tetrahedra. O2- is bonded to four equivalent Ce3+ atoms to form OCe4 tetrahedra that share corners with six equivalent SCe6 octahedra, corners with six equivalent OCe4 tetrahedra, edges with three equivalent SCe6 octahedra, and edges with three equivalent OCe4 tetrahedra. The corner-sharing octahedra tilt angles range from 25–50°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ce3S2O3 by Materials Project

Ce3S2O3 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are three inequivalent Ce+3.33+ sites. In the first Ce+3.33+ site, Ce+3.33+ is bonded in a 7-coordinate geometry to three equivalent S2- and four O2- atoms. There are two shorter (2.95 Å) and one longer (2.97 Å) Ce–S bond lengths. There are a spread of Ce–O bond distances ranging from 2.26–2.40 Å. In the second Ce+3.33+ site, Ce+3.33+ is bonded in a 7-coordinate geometry to three S2- and four O2- atoms. There are one shorter (2.82 Å) and two longer (3.04 Å) Ce–S bond lengths. There are a spread of Ce–O bond distances ranging from 2.20–2.43 Å. In the third Ce+3.33+ site, Ce+3.33+ is bonded in a 3-coordinate geometry to five S2- and three O2- atoms. There are a spread of Ce–S bond distances ranging from 2.96–3.07 Å. There are one shorter (2.30 Å) and two longer (2.42 Å) Ce–O bond lengths. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a 5-coordinate geometry to five Ce+3.33+ atoms. In the second S2- site, S2- is bonded in a 6-coordinate geometry to six Ce+3.33+ atoms. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded to four Ce+3.33+ atoms to form a mixture of distorted corner and edge-sharing OCe4 tetrahedra. In the second O2- site, O2- is bonded to four Ce+3.33+ atoms to form a mixture of corner and edge-sharing OCe4 tetrahedra. In the third O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three Ce+3.33+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ce2S2O by Materials Project

Ce2S2O crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent Ce3+ sites. In the first Ce3+ site, Ce3+ is bonded in a 1-coordinate geometry to six S2- and one O2- atom. There are a spread of Ce–S bond distances ranging from 2.84–2.95 Å. The Ce–O bond length is 2.35 Å. In the second Ce3+ site, Ce3+ is bonded in a 7-coordinate geometry to four S2- and three equivalent O2- atoms. There are a spread of Ce–S bond distances ranging from 2.88–3.07 Å. There are a spread of Ce–O bond distances ranging from 2.35–2.41 Å. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a 5-coordinate geometry to five Ce3+ atoms. In the second S2- site, S2- is bonded in a 5-coordinate geometry to five Ce3+ atoms. O2- is bonded to four Ce3+ atoms to form a mixture of edge and corner-sharing OCe4 tetrahedra.

36 MATERIALS SCIENCE↗