Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “K-O-P”

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.

12 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on KPO3 by Materials Project

KPO3 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. K1+ is bonded in a 6-coordinate geometry to six equivalent O2- atoms. There are a spread of K–O bond distances ranging from 2.79–2.95 Å. P5+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There is two shorter (1.50 Å) and two longer (1.63 Å) P–O bond length. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two equivalent P5+ atoms. In the second O2- site, O2- is bonded in a distorted single-bond geometry to three equivalent K1+ and one P5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K2PO4 by Materials Project

K2PO4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent K sites. In the first K site, K is bonded in a 9-coordinate geometry to nine O atoms. There are a spread of K–O bond distances ranging from 2.77–3.20 Å. In the second K site, K is bonded in a 8-coordinate geometry to eight O atoms. There are a spread of K–O bond distances ranging from 2.70–2.98 Å. P is bonded in a tetrahedral geometry to four O atoms. There is three shorter (1.53 Å) and one longer (1.70 Å) P–O bond length. There are four inequivalent O sites. In the first O site, O is bonded in a distorted single-bond geometry to five K and one P atom. In the second O site, O is bonded in a distorted single-bond geometry to five K and one P atom. In the third O site, O is bonded in a distorted single-bond geometry to three K and one P atom. In the fourth O site, O is bonded in a distorted single-bond geometry to four K and one P atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K3PO4 by Materials Project

K3PO4 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 7-coordinate geometry to seven O2- atoms. There are a spread of K–O bond distances ranging from 2.77–3.15 Å. In the second 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 2.60–2.93 Å. P5+ is bonded in a tetrahedral geometry to four O2- atoms. There is two shorter (1.56 Å) and two longer (1.57 Å) P–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 P5+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to five K1+ and one P5+ atom. In the third O2- site, O2- is bonded in a 1-coordinate geometry to five K1+ and one P5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KPO3 by Materials Project

KPO3 crystallizes in the monoclinic P2_1/c 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 2.75–3.19 Å. In the second K1+ site, K1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of K–O bond distances ranging from 2.76–3.17 Å. There are two inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.50–1.64 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.50–1.64 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to three equivalent K1+ and one P5+ atom. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one K1+ and two P5+ atoms. In the third O2- site, O2- is bonded in a distorted single-bond geometry to four K1+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one K1+ and two P5+ atoms. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to three K1+ and one P5+ atom. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to three equivalent K1+ and one P5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KPO3 by Materials Project

KPO3 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. K1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of K–O bond distances ranging from 2.66–3.06 Å. P5+ is bonded in a water-like geometry to two O2- atoms. There is one shorter (1.51 Å) and one longer (1.63 Å) P–O bond length. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent K1+ and one P5+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one K1+, one P5+, and one O2- atom. The O–O bond length is 1.47 Å. In the third O2- site, O2- is bonded in a 4-coordinate geometry to three equivalent K1+ and one O2- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K8PO3 by Materials Project

K8PO3 crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. K1+ is bonded to one P2- and three equivalent O2- atoms to form a mixture of distorted edge and corner-sharing KPO3 tetrahedra. The K–P bond length is 3.13 Å. All K–O bond lengths are 2.92 Å. P2- is bonded in a body-centered cubic geometry to eight equivalent K1+ atoms. O2- is bonded in a body-centered cubic geometry to eight equivalent K1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K4P2O7 by Materials Project

K4P2O7 crystallizes in the hexagonal P6_3/mmc 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 (3.05 Å) and three longer (3.35 Å) K–O bond lengths. In the second K1+ site, K1+ is bonded in a 6-coordinate geometry to six equivalent O2- atoms. All K–O bond lengths are 2.85 Å. In the third K1+ site, K1+ is bonded to six equivalent O2- atoms to form KO6 octahedra that share corners with six equivalent PO4 tetrahedra. All K–O bond lengths are 2.64 Å. P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with three equivalent KO6 octahedra and a cornercorner with one PO4 tetrahedra. The corner-sharing octahedral tilt angles are 25°. There is three shorter (1.53 Å) and one longer (1.62 Å) P–O bond length. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to five K1+ and one P5+ atom. In the second O2- site, O2- is bonded in a linear geometry to two equivalent P5+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KPO4 by Materials Project

KPO4 is Zircon structured and crystallizes in the tetragonal I-42d space group. The structure is three-dimensional. K is bonded in a 8-coordinate geometry to eight equivalent O atoms. There are four shorter (2.78 Å) and four longer (2.98 Å) K–O bond lengths. P is bonded in a tetrahedral geometry to four equivalent O atoms. All P–O bond lengths are 1.54 Å. O is bonded in a distorted single-bond geometry to two equivalent K and one P atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K3P3O10 by Materials Project

K3P3O10 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are three inequivalent K sites. In the first K site, K is bonded in a 7-coordinate geometry to seven O atoms. There are a spread of K–O bond distances ranging from 2.68–3.07 Å. In the second K site, K is bonded in a 5-coordinate geometry to six O atoms. There are a spread of K–O bond distances ranging from 2.62–3.21 Å. In the third K site, K is bonded in a 7-coordinate geometry to seven O atoms. There are a spread of K–O bond distances ranging from 2.71–3.34 Å. There are three inequivalent P sites. In the first P site, P is bonded in a bent 120 degrees geometry to two O atoms. Both P–O bond lengths are 1.51 Å. In the second P site, P is bonded in a bent 120 degrees geometry to two O atoms. There is one shorter (1.50 Å) and one longer (1.51 Å) P–O bond length. In the third P site, P is bonded in a bent 120 degrees geometry to two O atoms. Both P–O bond lengths are 1.50 Å. There are ten inequivalent O sites. In the first O site, O is bonded in a distorted T-shaped geometry to two K and one O atom. The O–O bond length is 1.33 Å. In the second O site, O is bonded in a distorted single-bond geometry to one K and one P atom. In the third O site, O is bonded in a distorted single-bond geometry to three K and one P atom. In the fourth O site, O is bonded in a distorted single-bond geometry to two K and one P atom. In the fifth O site, O is bonded in a bent 150 degrees geometry to two K atoms. In the sixth O site, O is bonded in a distorted single-bond geometry to three K and one P atom. In the seventh O site, O is bonded in a distorted trigonal planar geometry to one K and two O atoms. The O–O bond length is 1.34 Å. In the eighth O site, O is bonded in a distorted single-bond geometry to two K and one P atom. In the ninth O site, O is bonded in a distorted T-shaped geometry to two K and one O atom. In the tenth O site, O is bonded in a distorted trigonal planar geometry to two K and one P atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KPO3 by Materials Project

KPO3 crystallizes in the monoclinic C2/m space group. The structure is two-dimensional and consists of two KPO3 sheets oriented in the (1, 0, 0) direction. K1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of K–O bond distances ranging from 2.73–2.83 Å. P5+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.49 Å) and one longer (1.50 Å) P–O bond length. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent K1+ and one P5+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to one K1+ and one P5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KPO4 by Materials Project

KPO4 is Zircon structured and crystallizes in the tetragonal I-42d space group. The structure is three-dimensional. K is bonded in a 8-coordinate geometry to eight equivalent O atoms. There are four shorter (2.78 Å) and four longer (2.97 Å) K–O bond lengths. P is bonded in a tetrahedral geometry to four equivalent O atoms. All P–O bond lengths are 1.54 Å. O is bonded in a distorted single-bond geometry to two equivalent K and one P atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KPO4 by Materials Project

KPO4 crystallizes in the tetragonal I-42d space group. The structure is one-dimensional and consists of four KPO4 ribbons oriented in the (0, 0, 1) direction. K is bonded in a 4-coordinate geometry to four equivalent O atoms. All K–O bond lengths are 2.67 Å. P is bonded in a distorted tetrahedral geometry to four equivalent O atoms. All P–O bond lengths are 1.56 Å. O is bonded in a distorted water-like geometry to one K and one P atom.

36 MATERIALS SCIENCE↗