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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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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on KBe(PO3)3 by Materials Project

KBe(PO3)3 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is three-dimensional. K1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of K–O bond distances ranging from 2.74–3.16 Å. Be2+ is bonded to four O2- atoms to form BeO4 tetrahedra that share corners with four PO4 tetrahedra. There are a spread of Be–O bond distances ranging from 1.61–1.64 Å. There are three inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one BeO4 tetrahedra and corners with two PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.49–1.63 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one BeO4 tetrahedra and corners with two PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.48–1.63 Å. In the third P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent BeO4 tetrahedra and corners with two PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.49–1.60 Å. There are nine 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 linear geometry to one Be2+ and one P5+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent K1+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one K1+, one Be2+, and one P5+ atom. In the fifth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one K1+ and two P5+ atoms. In the sixth O2- site, O2- is bonded in a bent 120 degrees geometry to two P5+ atoms. In the seventh O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Be2+ and one P5+ atom. In the eighth O2- site, O2- is bonded in a bent 120 degrees geometry to two P5+ atoms. In the ninth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one K1+, one Be2+, and one P5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KBePO4 by Materials Project

KBePO4 crystallizes in the orthorhombic Pna2_1 space group. The structure is three-dimensional. K1+ is bonded in a 11-coordinate geometry to eleven O2- atoms. There are a spread of K–O bond distances ranging from 2.78–3.37 Å. Be2+ is bonded to four O2- atoms to form BeO4 tetrahedra that share corners with four equivalent PO4 tetrahedra. There are a spread of Be–O bond distances ranging from 1.62–1.66 Å. P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four equivalent BeO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.53–1.56 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two equivalent K1+, one Be2+, and one P5+ atom. In the second O2- site, O2- is bonded in a 2-coordinate geometry to three equivalent K1+, one Be2+, and one P5+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to three equivalent K1+, one Be2+, and one P5+ atom. In the fourth O2- site, O2- is bonded in a linear geometry to three equivalent K1+, one Be2+, and one P5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K7Be12(PO4)12 by Materials Project

K7Be12(PO4)12 crystallizes in the cubic I23 space group. The structure is three-dimensional. there are two inequivalent K sites. In the first K site, K is bonded to four equivalent O atoms to form distorted KO4 tetrahedra that share corners with four equivalent BeO4 tetrahedra and corners with four equivalent PO4 tetrahedra. All K–O bond lengths are 2.68 Å. In the second 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 3.01–3.29 Å. Be is bonded to four O atoms to form BeO4 tetrahedra that share a cornercorner with one KO4 tetrahedra and corners with four equivalent PO4 tetrahedra. There are a spread of Be–O bond distances ranging from 1.62–1.65 Å. P is bonded to four O atoms to form PO4 tetrahedra that share a cornercorner with one KO4 tetrahedra and corners with four equivalent BeO4 tetrahedra. There is two shorter (1.54 Å) and two longer (1.55 Å) P–O bond length. There are four inequivalent O sites. In the first O site, O is bonded in a distorted bent 150 degrees geometry to one K, one Be, and one P atom. In the second O site, O is bonded in a 3-coordinate geometry to one K, one Be, and one P atom. In the third O site, O is bonded in a distorted bent 120 degrees geometry to one K, one Be, and one P atom. In the fourth O site, O is bonded in a distorted bent 120 degrees geometry to one K, one Be, and one P atom.

36 MATERIALS SCIENCE↗