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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.

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8 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on As8S9 by Materials Project

As4S5(SAs)4 crystallizes in the monoclinic P2/c space group. The structure is zero-dimensional and consists of two tetraarsenic tetrasulfide molecules and two As4S5 clusters. In each As4S5 cluster, there are two inequivalent As+2.25+ sites. In the first As+2.25+ site, As+2.25+ is bonded in a water-like geometry to two S2- atoms. There are one shorter (2.26 Å) and one longer (2.28 Å) As–S bond lengths. In the second As+2.25+ site, As+2.25+ is bonded in a trigonal non-coplanar geometry to three S2- atoms. There are one shorter (2.27 Å) and two longer (2.28 Å) As–S bond lengths. There are three inequivalent S2- sites. In the first S2- site, S2- is bonded in a water-like geometry to two As+2.25+ atoms. In the second S2- site, S2- is bonded in a bent 120 degrees geometry to two equivalent As+2.25+ atoms. In the third S2- site, S2- is bonded in a water-like geometry to two As+2.25+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on As4S5 by Materials Project

As4S5 crystallizes in the monoclinic P2_1/m space group. The structure is zero-dimensional and consists of two As4S5 clusters. there are three inequivalent As+2.50+ sites. In the first As+2.50+ site, As+2.50+ is bonded in a trigonal non-coplanar geometry to three S2- atoms. There are a spread of As–S bond distances ranging from 2.27–2.29 Å. In the second As+2.50+ site, As+2.50+ is bonded in a water-like geometry to two equivalent S2- atoms. Both As–S bond lengths are 2.28 Å. In the third As+2.50+ site, As+2.50+ is bonded in a water-like geometry to two equivalent S2- atoms. Both As–S bond lengths are 2.26 Å. There are three inequivalent S2- sites. In the first S2- site, S2- is bonded in a bent 120 degrees geometry to two equivalent As+2.50+ atoms. In the second S2- site, S2- is bonded in a water-like geometry to two As+2.50+ atoms. In the third S2- site, S2- is bonded in a water-like geometry to two As+2.50+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on AsS by Materials Project

SAs is alpha Selenium-derived structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four tetraarsenic tetrasulfide molecules. there are four inequivalent As2+ sites. In the first As2+ site, As2+ is bonded in an L-shaped geometry to two S2- atoms. Both As–S bond lengths are 2.26 Å. In the second As2+ site, As2+ is bonded in an L-shaped geometry to two S2- atoms. There are one shorter (2.26 Å) and one longer (2.27 Å) As–S bond lengths. In the third As2+ site, As2+ is bonded in an L-shaped geometry to two S2- atoms. Both As–S bond lengths are 2.25 Å. In the fourth As2+ site, As2+ is bonded in an L-shaped geometry to two S2- atoms. Both As–S bond lengths are 2.26 Å. There are four inequivalent S2- sites. In the first S2- site, S2- is bonded in a water-like geometry to two As2+ atoms. In the second S2- site, S2- is bonded in a water-like geometry to two As2+ atoms. In the third S2- site, S2- is bonded in a water-like geometry to two As2+ atoms. In the fourth S2- site, S2- is bonded in a water-like geometry to two As2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on AsS by Materials Project

SAs crystallizes in the monoclinic C2/c space group. The structure is zero-dimensional and consists of four tetraarsenic tetrasulfide molecules. there are two inequivalent As2+ sites. In the first As2+ site, As2+ is bonded in an L-shaped geometry to two S2- atoms. Both As–S bond lengths are 2.26 Å. In the second As2+ site, As2+ is bonded in an L-shaped geometry to two S2- atoms. There are one shorter (2.25 Å) and one longer (2.26 Å) As–S bond lengths. There are three inequivalent S2- sites. In the first S2- site, S2- is bonded in a water-like geometry to two equivalent As2+ atoms. In the second S2- site, S2- is bonded in a water-like geometry to two equivalent As2+ atoms. In the third S2- site, S2- is bonded in a water-like geometry to two As2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on AsS by Materials Project

SAs is High Pressure (4-7GPa) Tellurium-like structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four SAs clusters. there are four inequivalent As2+ sites. In the first As2+ site, As2+ is bonded in a distorted trigonal non-coplanar geometry to three S2- atoms. There are a spread of As–S bond distances ranging from 2.28–2.30 Å. In the second As2+ site, As2+ is bonded in a water-like geometry to two S2- atoms. There are one shorter (2.27 Å) and one longer (2.30 Å) As–S bond lengths. In the third As2+ site, As2+ is bonded in a single-bond geometry to one S2- atom. The As–S bond length is 2.22 Å. In the fourth As2+ site, As2+ is bonded in a water-like geometry to two S2- atoms. There are one shorter (2.27 Å) and one longer (2.30 Å) As–S bond lengths. There are four inequivalent S2- sites. In the first S2- site, S2- is bonded in an L-shaped geometry to two As2+ atoms. In the second S2- site, S2- is bonded in a water-like geometry to two As2+ atoms. In the third S2- site, S2- is bonded in a water-like geometry to two As2+ atoms. In the fourth S2- site, S2- is bonded in a water-like geometry to two As2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on As4S3 by Materials Project

As4S3 crystallizes in the orthorhombic Pnma space group. The structure is zero-dimensional and consists of four tetraarsenic trisulfide molecules. there are three inequivalent As+1.50+ sites. In the first As+1.50+ site, As+1.50+ is bonded in a distorted trigonal non-coplanar geometry to three S2- atoms. There are two shorter (2.26 Å) and one longer (2.27 Å) As–S bond lengths. In the second As+1.50+ site, As+1.50+ is bonded in a single-bond geometry to one S2- atom. The As–S bond length is 2.23 Å. In the third As+1.50+ site, As+1.50+ is bonded in a single-bond geometry to one S2- atom. The As–S bond length is 2.23 Å. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a water-like geometry to two As+1.50+ atoms. In the second S2- site, S2- is bonded in a water-like geometry to two As+1.50+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on As2S3 by Materials Project

As2S3 crystallizes in the monoclinic P2_1/c space group. The structure is two-dimensional and consists of two As2S3 sheets oriented in the (0, 1, 0) direction. there are two inequivalent As3+ sites. In the first As3+ site, As3+ is bonded in a distorted trigonal non-coplanar geometry to three S2- atoms. There are a spread of As–S bond distances ranging from 2.28–2.31 Å. In the second As3+ site, As3+ is bonded in a trigonal non-coplanar geometry to three S2- atoms. There are two shorter (2.29 Å) and one longer (2.30 Å) As–S bond lengths. There are three inequivalent S2- sites. In the first S2- site, S2- is bonded in an L-shaped geometry to two As3+ atoms. In the second S2- site, S2- is bonded in a water-like geometry to two As3+ atoms. In the third S2- site, S2- is bonded in a water-like geometry to two As3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on AsS by Materials Project

SAs crystallizes in the orthorhombic Cmc2_1 space group. The structure is one-dimensional and consists of two SAs ribbons oriented in the (0, 0, 1) direction. there are two inequivalent As2+ sites. In the first As2+ site, As2+ is bonded in a 6-coordinate geometry to six S2- atoms. There are a spread of As–S bond distances ranging from 2.44–2.93 Å. In the second As2+ site, As2+ is bonded in an L-shaped geometry to two S2- atoms. There are one shorter (2.29 Å) and one longer (2.36 Å) As–S bond lengths. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded to four As2+ atoms to form distorted corner-sharing SAs4 trigonal pyramids. In the second S2- site, S2- is bonded in a 2-coordinate geometry to three As2+ atoms.

36 MATERIALS SCIENCE↗