Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “K-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.

Materials Data on K2(SO2)3 by Materials Project

(KSO3)2S crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional and consists of four hydrogen sulfide molecules and one KSO3 framework. In the KSO3 framework, there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of K–O bond distances ranging from 2.86–3.26 Å. In the second K1+ site, K1+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of K–O bond distances ranging from 2.73–3.08 Å. There are two inequivalent S+3.33+ sites. In the first S+3.33+ site, S+3.33+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There is two shorter (1.47 Å) and one longer (1.48 Å) S–O bond length. In the second S+3.33+ site, S+3.33+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. All S–O bond lengths are 1.47 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to three K1+ and one S+3.33+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to three K1+ and one S+3.33+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to three K1+ and one S+3.33+ atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to three K1+ and one S+3.33+ atom.

36 MATERIALS SCIENCE↗

Materials Data on K2S2O5 by Materials Project

K2S2O5 crystallizes in the monoclinic P2_1/m space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded to seven O2- atoms to form distorted edge-sharing KO7 pentagonal bipyramids. There are a spread of K–O bond distances ranging from 2.74–3.00 Å. In the second K1+ site, K1+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of K–O bond distances ranging from 2.86–3.27 Å. There are two inequivalent S4+ sites. In the first S4+ site, S4+ is bonded in a water-like geometry to two equivalent O2- atoms. Both S–O bond lengths are 1.51 Å. In the second S4+ site, S4+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. All S–O bond lengths are 1.49 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to four K1+ and one S4+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to three K1+ and one S4+ atom. In the third O2- site, O2- is bonded in a 1-coordinate geometry to three K1+ and one S4+ atom.

36 MATERIALS SCIENCE↗

Materials Data on K2SO4 by Materials Project

K2SO4 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of K–O bond distances ranging from 2.78–3.20 Å. In the second K1+ site, K1+ is bonded in a 1-coordinate geometry to ten O2- atoms. There are a spread of K–O bond distances ranging from 2.75–3.19 Å. S6+ is bonded in a tetrahedral geometry to four O2- atoms. There is one shorter (1.49 Å) and three longer (1.50 Å) S–O bond length. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to five K1+ and one S6+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to five K1+ and one S6+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to four K1+ and one S6+ atom.

36 MATERIALS SCIENCE↗

Materials Data on KSO4 by Materials Project

KSO4 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. K is bonded in a 6-coordinate geometry to eleven O atoms. There are a spread of K–O bond distances ranging from 2.75–3.33 Å. S is bonded in a tetrahedral geometry to four O atoms. There are a spread of S–O bond distances ranging from 1.45–1.68 Å. There are four inequivalent O sites. In the first O site, O is bonded in a distorted single-bond geometry to three equivalent K and one S atom. In the second O site, O is bonded in a distorted single-bond geometry to three equivalent K and one S atom. In the third O site, O is bonded in a distorted single-bond geometry to two equivalent K and one S atom. In the fourth O site, O is bonded in a distorted single-bond geometry to three equivalent K and one S atom.

36 MATERIALS SCIENCE↗

Materials Data on KSO3 by Materials Project

KSO3 crystallizes in the trigonal P321 space group. The structure is three-dimensional. there are two inequivalent K sites. In the first K site, K is bonded to six O atoms to form distorted corner-sharing KO6 octahedra. The corner-sharing octahedra tilt angles range from 66–67°. There are a spread of K–O bond distances ranging from 2.77–2.83 Å. In the second K site, K is bonded to six O atoms to form corner-sharing KO6 octahedra. The corner-sharing octahedra tilt angles range from 66–67°. There are a spread of K–O bond distances ranging from 2.80–2.86 Å. There are three inequivalent S sites. In the first S site, S is bonded in a trigonal non-coplanar geometry to three equivalent O atoms. All S–O bond lengths are 1.47 Å. In the second S site, S is bonded in a trigonal non-coplanar geometry to three equivalent O atoms. All S–O bond lengths are 1.47 Å. In the third S site, S is bonded in a trigonal non-coplanar geometry to three equivalent O atoms. All S–O bond lengths are 1.47 Å. There are three inequivalent O sites. In the first O site, O is bonded in a distorted trigonal planar geometry to two K and one S atom. In the second O site, O is bonded in a distorted trigonal planar geometry to two K and one S atom. In the third O site, O is bonded in a distorted trigonal planar geometry to two K and one S atom.

36 MATERIALS SCIENCE↗

Materials Data on K2S2O7 by Materials Project

K2S2O7 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. K1+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of K–O bond distances ranging from 2.77–3.27 Å. S6+ is bonded to four O2- atoms to form corner-sharing SO4 tetrahedra. There are a spread of S–O bond distances ranging from 1.45–1.67 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to three equivalent K1+ and one S6+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to three equivalent K1+ and one S6+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to three equivalent K1+ and one S6+ atom. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to two equivalent S6+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on K2SO4 by Materials Project

K2SO4 crystallizes in the trigonal P-3m1 space group. The structure is three-dimensional. there are three inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 6-coordinate geometry to six equivalent O2- atoms. All K–O bond lengths are 2.61 Å. In the second K1+ site, K1+ is bonded in a 3-coordinate geometry to three equivalent O2- atoms. All K–O bond lengths are 2.43 Å. In the third K1+ site, K1+ is bonded to twelve O2- atoms to form edge-sharing KO12 cuboctahedra. There are six shorter (2.80 Å) and six longer (3.20 Å) K–O bond lengths. S6+ is bonded in a single-bond geometry to one O2- atom. The S–O bond length is 1.46 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to three equivalent K1+ and one S6+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to three K1+ and two equivalent O2- atoms. Both O–O bond lengths are 2.19 Å.

36 MATERIALS SCIENCE↗

Materials Data on K2SO4 by Materials Project

K2SO4 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of K–O bond distances ranging from 2.86–3.38 Å. In the second K1+ site, K1+ is bonded to six O2- atoms to form KO6 octahedra that share corners with six equivalent SO4 tetrahedra and edges with two equivalent KO6 octahedra. There are a spread of K–O bond distances ranging from 2.66–2.83 Å. S6+ is bonded to four O2- atoms to form SO4 tetrahedra that share corners with six equivalent KO6 octahedra. The corner-sharing octahedra tilt angles range from 38–48°. There is two shorter (1.48 Å) and two longer (1.50 Å) S–O bond length. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to four K1+ and one S6+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to four K1+ and one S6+ atom.

36 MATERIALS SCIENCE↗

Materials Data on K2SO3 by Materials Project

K2SO3 crystallizes in the monoclinic Cc space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of K–O bond distances ranging from 2.69–3.14 Å. In the second K1+ site, K1+ is bonded to five O2- atoms to form distorted edge-sharing KO5 square pyramids. There are a spread of K–O bond distances ranging from 2.68–3.02 Å. S4+ is bonded in a water-like geometry to two O2- atoms. There is one shorter (1.51 Å) and one longer (1.52 Å) S–O bond length. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to three K1+ and one S4+ atom. In the second O2- site, O2- is bonded in a rectangular see-saw-like geometry to four K1+ atoms. In the third O2- site, O2- is bonded in a 1-coordinate geometry to four K1+ and one S4+ atom.

36 MATERIALS SCIENCE↗

Materials Data on KSO4 by Materials Project

KSO4 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. K is bonded in a 7-coordinate geometry to seven O atoms. There are a spread of K–O bond distances ranging from 2.77–3.24 Å. S is bonded in a tetrahedral geometry to four O atoms. There is three shorter (1.46 Å) and one longer (1.68 Å) S–O bond length. There are four inequivalent O sites. In the first O site, O is bonded in a distorted single-bond geometry to two equivalent K and one S atom. In the second O site, O is bonded in a distorted single-bond geometry to two equivalent K and one S atom. In the third O site, O is bonded in a distorted single-bond geometry to one K and one S atom. In the fourth O site, O is bonded in a distorted single-bond geometry to two equivalent K and one S atom.

36 MATERIALS SCIENCE↗

Materials Data on K2SO3 by Materials Project

K2SO3 crystallizes in the trigonal P-3m1 space group. The structure is three-dimensional. there are three inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 9-coordinate geometry to nine equivalent O2- atoms. There are six shorter (3.06 Å) and three longer (3.24 Å) K–O bond lengths. In the second K1+ site, K1+ is bonded to six equivalent O2- atoms to form face-sharing KO6 octahedra. All K–O bond lengths are 2.65 Å. In the third K1+ site, K1+ is bonded to six equivalent O2- atoms to form face-sharing KO6 octahedra. All K–O bond lengths are 2.81 Å. S4+ is bonded in a trigonal non-coplanar geometry to three equivalent O2- atoms. All S–O bond lengths are 1.54 Å. O2- is bonded in a 1-coordinate geometry to five K1+ and one S4+ atom.

36 MATERIALS SCIENCE↗

Materials Data on KSO6 by Materials Project

KSO6 crystallizes in the monoclinic C2/c space group. The structure is two-dimensional and consists of two KSO6 sheets oriented in the (1, 0, 0) direction. K is bonded in a 10-coordinate geometry to ten O atoms. There are a spread of K–O bond distances ranging from 2.83–3.23 Å. S is bonded in a distorted tetrahedral geometry to four O atoms. There are a spread of S–O bond distances ranging from 1.44–1.86 Å. There are six inequivalent O sites. In the first O site, O is bonded in a single-bond geometry to one K atom. In the second O site, O is bonded in a distorted single-bond geometry to three equivalent K and one S atom. In the third O site, O is bonded in a 1-coordinate geometry to one K, one S, and one O atom. The O–O bond length is 1.32 Å. In the fourth O site, O is bonded in a 2-coordinate geometry to two equivalent K and one O atom. In the fifth O site, O is bonded in a single-bond geometry to one S atom. In the sixth O site, O is bonded in a distorted single-bond geometry to three equivalent K and one S atom.

36 MATERIALS SCIENCE↗