Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “K-O-Si-Sn”

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.

3 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on K2Si3SnO9 by Materials Project

K2SnSi3O9 crystallizes in the hexagonal P6_3/m space group. The structure is three-dimensional. K1+ is bonded in a 3-coordinate geometry to nine O2- atoms. There are a spread of K–O bond distances ranging from 2.83–3.23 Å. Sn4+ is bonded to six equivalent O2- atoms to form SnO6 octahedra that share corners with six equivalent SiO4 tetrahedra. All Sn–O bond lengths are 2.07 Å. Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with two equivalent SnO6 octahedra and corners with two equivalent SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 41°. There are a spread of Si–O bond distances ranging from 1.62–1.67 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent K1+, one Sn4+, and one Si4+ atom. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two equivalent K1+ and two equivalent Si4+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K2Si3SnO9 by Materials Project

K2SnSi3O9 crystallizes in the trigonal R3 space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of K–O bond distances ranging from 2.76–3.34 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 2.88–3.20 Å. There are two inequivalent Sn4+ sites. In the first Sn4+ site, Sn4+ is bonded to six O2- atoms to form SnO6 octahedra that share corners with six SiO4 tetrahedra. There are three shorter (2.08 Å) and three longer (2.09 Å) Sn–O bond lengths. In the second Sn4+ site, Sn4+ is bonded to six O2- atoms to form SnO6 octahedra that share corners with six SiO4 tetrahedra. There are three shorter (2.08 Å) and three longer (2.10 Å) Sn–O bond lengths. There are two inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with two SnO6 octahedra and corners with two equivalent SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 52°. There are a spread of Si–O bond distances ranging from 1.62–1.66 Å. In the second Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with two SnO6 octahedra and corners with two equivalent SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 48–51°. There are a spread of Si–O bond distances ranging from 1.62–1.66 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent K1+, one Sn4+, and one Si4+ atom. In the second O2- site, O2- is bonded in a 2-coordinate geometry to two K1+, one Sn4+, and one Si4+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to one K1+, one Sn4+, and one Si4+ atom. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to two K1+, one Sn4+, and one Si4+ atom. In the fifth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one K1+ and two Si4+ atoms. In the sixth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two equivalent K1+ and two Si4+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K2Si3SnO10 by Materials Project

K2SnSi3O10 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is three-dimensional. there are two inequivalent K sites. In the first K site, K is bonded in a 6-coordinate geometry to six O atoms. There are a spread of K–O bond distances ranging from 2.75–3.25 Å. In the second K site, K is bonded in a 7-coordinate geometry to nine O atoms. There are a spread of K–O bond distances ranging from 2.75–3.35 Å. Sn is bonded to six O atoms to form SnO6 octahedra that share corners with six SiO4 tetrahedra. There are a spread of Sn–O bond distances ranging from 2.04–2.13 Å. There are three inequivalent Si sites. In the first Si site, Si is bonded to four O atoms to form SiO4 tetrahedra that share corners with two equivalent SnO6 octahedra and corners with two SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 48–50°. There is two shorter (1.62 Å) and two longer (1.65 Å) Si–O bond length. In the second Si site, Si is bonded to four O atoms to form SiO4 tetrahedra that share corners with two equivalent SnO6 octahedra and corners with two SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 42–58°. There are a spread of Si–O bond distances ranging from 1.61–1.66 Å. In the third Si site, Si is bonded to four O atoms to form SiO4 tetrahedra that share corners with two equivalent SnO6 octahedra and corners with two SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 45–47°. There are a spread of Si–O bond distances ranging from 1.62–1.67 Å. There are ten inequivalent O sites. In the first O site, O is bonded in a 2-coordinate geometry to two K, one Sn, and one Si atom. In the second O site, O is bonded in a 4-coordinate geometry to two K, one Sn, and one Si atom. In the third O site, O is bonded in a 3-coordinate geometry to one K, one Sn, and one Si atom. In the fourth O site, O is bonded in a 4-coordinate geometry to two K, one Sn, and one Si atom. In the fifth O site, O is bonded in an L-shaped geometry to two K atoms. In the sixth O site, O is bonded in a distorted bent 120 degrees geometry to one K and two Si atoms. In the seventh O site, O is bonded in a distorted bent 120 degrees geometry to one K and two Si atoms. In the eighth O site, O is bonded in a distorted bent 120 degrees geometry to one K, one Sn, and one Si atom. In the ninth O site, O is bonded in a distorted bent 120 degrees geometry to two equivalent K and two Si atoms. In the tenth O site, O is bonded in a 3-coordinate geometry to one K, one Sn, and one Si atom.

36 MATERIALS SCIENCE↗