Search NASA⌕ Search

SEARCH · Search NASA

Results for “Ag-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.

10 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Ag8S by Materials Project

Ag8S crystallizes in the orthorhombic Imm2 space group. The structure is three-dimensional. there are four inequivalent Ag sites. In the first Ag site, Ag is bonded to twelve Ag atoms to form AgAg12 cuboctahedra that share corners with twelve equivalent AgAg12 cuboctahedra, edges with twelve AgAg12 cuboctahedra, edges with three equivalent SAg4 tetrahedra, and faces with six AgAg12 cuboctahedra. There are a spread of Ag–Ag bond distances ranging from 3.21–3.26 Å. In the second Ag site, Ag is bonded in a single-bond geometry to six Ag and one S atom. There are two shorter (3.23 Å) and two longer (3.26 Å) Ag–Ag bond lengths. The Ag–S bond length is 2.30 Å. In the third Ag site, Ag is bonded to twelve Ag atoms to form AgAg12 cuboctahedra that share corners with twelve equivalent AgAg12 cuboctahedra, edges with twelve AgAg12 cuboctahedra, edges with three equivalent SAg4 tetrahedra, and faces with six AgAg12 cuboctahedra. There are two shorter (3.22 Å) and two longer (3.25 Å) Ag–Ag bond lengths. In the fourth Ag site, Ag is bonded in a single-bond geometry to six Ag and one S atom. The Ag–S bond length is 2.31 Å. S is bonded to four Ag atoms to form SAg4 tetrahedra that share edges with twelve AgAg12 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ag2S by Materials Project

Ag2S crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional. there are two inequivalent Ag1+ sites. In the first Ag1+ site, Ag1+ is bonded in a 3-coordinate geometry to three equivalent S2- atoms. There are a spread of Ag–S bond distances ranging from 2.49–2.82 Å. In the second Ag1+ site, Ag1+ is bonded in a linear geometry to two equivalent S2- atoms. There are one shorter (2.42 Å) and one longer (2.43 Å) Ag–S bond lengths. S2- is bonded in a 5-coordinate geometry to five Ag1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ag2S by Materials Project

Ag2S crystallizes in the monoclinic Cm space group. The structure is three-dimensional. there are four inequivalent Ag1+ sites. In the first Ag1+ site, Ag1+ is bonded in a linear geometry to two S2- atoms. Both Ag–S bond lengths are 2.44 Å. In the second Ag1+ site, Ag1+ is bonded in a linear geometry to two S2- atoms. Both Ag–S bond lengths are 2.44 Å. In the third Ag1+ site, Ag1+ is bonded in a 3-coordinate geometry to three equivalent S2- atoms. There are two shorter (2.51 Å) and one longer (2.75 Å) Ag–S bond lengths. In the fourth Ag1+ site, Ag1+ is bonded in a 3-coordinate geometry to three equivalent S2- atoms. There are two shorter (2.52 Å) and one longer (2.74 Å) Ag–S bond lengths. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a 5-coordinate geometry to five Ag1+ atoms. In the second S2- site, S2- is bonded in a 5-coordinate geometry to five Ag1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ag2S by Materials Project

Ag2S crystallizes in the orthorhombic Cmce space group. The structure is three-dimensional. Ag1+ is bonded in a 4-coordinate geometry to four equivalent S2- atoms. There are a spread of Ag–S bond distances ranging from 2.61–2.84 Å. S2- is bonded to eight equivalent Ag1+ atoms to form a mixture of distorted edge and corner-sharing SAg8 hexagonal bipyramids.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ag2S by Materials Project

Ag2S crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. there are two inequivalent Ag1+ sites. In the first Ag1+ site, Ag1+ is bonded in a linear geometry to two equivalent S2- atoms. Both Ag–S bond lengths are 2.44 Å. In the second Ag1+ site, Ag1+ is bonded in a 3-coordinate geometry to three equivalent S2- atoms. There are two shorter (2.51 Å) and one longer (2.79 Å) Ag–S bond lengths. S2- is bonded in a 5-coordinate geometry to five Ag1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ag2S by Materials Project

Ag2S crystallizes in the monoclinic Pc space group. The structure is three-dimensional. there are two inequivalent Ag1+ sites. In the first Ag1+ site, Ag1+ is bonded in a trigonal planar geometry to three equivalent S2- atoms. There are a spread of Ag–S bond distances ranging from 2.54–2.60 Å. In the second Ag1+ site, Ag1+ is bonded in a distorted trigonal planar geometry to three equivalent S2- atoms. There are a spread of Ag–S bond distances ranging from 2.54–2.64 Å. S2- is bonded in a 6-coordinate geometry to six Ag1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ag2S by Materials Project

Ag2S crystallizes in the monoclinic P2_1/m space group. The structure is three-dimensional. there are two inequivalent Ag1+ sites. In the first Ag1+ site, Ag1+ is bonded in a 3-coordinate geometry to three equivalent S2- atoms. There are a spread of Ag–S bond distances ranging from 2.51–2.75 Å. In the second Ag1+ site, Ag1+ is bonded in a linear geometry to two equivalent S2- atoms. Both Ag–S bond lengths are 2.44 Å. S2- is bonded in a 5-coordinate geometry to five Ag1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ag2S by Materials Project

Ag2S crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent Ag1+ sites. In the first Ag1+ site, Ag1+ is bonded in a 2-coordinate geometry to two equivalent S2- atoms. Both Ag–S bond lengths are 2.47 Å. In the second Ag1+ site, Ag1+ is bonded in a 3-coordinate geometry to three equivalent S2- atoms. There are a spread of Ag–S bond distances ranging from 2.54–2.79 Å. S2- is bonded in a 5-coordinate geometry to five Ag1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ag2S by Materials Project

Ag2S is Cotunnite structured and crystallizes in the orthorhombic P2_12_12_1 space group. The structure is three-dimensional. there are two inequivalent Ag1+ sites. In the first Ag1+ site, Ag1+ is bonded in a 3-coordinate geometry to three equivalent S2- atoms. There are a spread of Ag–S bond distances ranging from 2.58–2.73 Å. In the second Ag1+ site, Ag1+ is bonded in a 4-coordinate geometry to four equivalent S2- atoms. There are a spread of Ag–S bond distances ranging from 2.64–2.82 Å. S2- is bonded in a 7-coordinate geometry to seven Ag1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ag3S by Materials Project

Ag2SAg is Uranium Silicide-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. there are three inequivalent Ag sites. In the first Ag site, Ag is bonded to eight Ag and four equivalent S atoms to form distorted AgAg8S4 cuboctahedra that share corners with four equivalent SAg12 cuboctahedra, corners with fourteen AgAg8S4 cuboctahedra, edges with six equivalent SAg12 cuboctahedra, edges with twelve AgAg8S4 cuboctahedra, faces with four equivalent SAg12 cuboctahedra, and faces with sixteen AgAg8S4 cuboctahedra. There are a spread of Ag–Ag bond distances ranging from 2.89–3.02 Å. There are two shorter (2.91 Å) and two longer (2.99 Å) Ag–S bond lengths. In the second Ag site, Ag is bonded to eight Ag and four equivalent S atoms to form distorted AgAg8S4 cuboctahedra that share corners with four equivalent SAg12 cuboctahedra, corners with fourteen AgAg8S4 cuboctahedra, edges with six equivalent SAg12 cuboctahedra, edges with twelve AgAg8S4 cuboctahedra, faces with four equivalent SAg12 cuboctahedra, and faces with sixteen AgAg8S4 cuboctahedra. Both Ag–Ag bond lengths are 2.89 Å. There are two shorter (2.91 Å) and two longer (2.99 Å) Ag–S bond lengths. In the third Ag site, Ag is bonded to eight Ag and four equivalent S atoms to form distorted AgAg8S4 cuboctahedra that share corners with four equivalent SAg12 cuboctahedra, corners with fourteen AgAg8S4 cuboctahedra, edges with six equivalent SAg12 cuboctahedra, edges with twelve AgAg8S4 cuboctahedra, faces with four equivalent SAg12 cuboctahedra, and faces with sixteen AgAg8S4 cuboctahedra. There are a spread of Ag–Ag bond distances ranging from 2.89–3.02 Å. There are two shorter (2.91 Å) and two longer (2.99 Å) Ag–S bond lengths. S is bonded to twelve Ag atoms to form SAg12 cuboctahedra that share corners with six equivalent SAg12 cuboctahedra, corners with twelve AgAg8S4 cuboctahedra, edges with eighteen AgAg8S4 cuboctahedra, faces with eight equivalent SAg12 cuboctahedra, and faces with twelve AgAg8S4 cuboctahedra.

36 MATERIALS SCIENCE↗