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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 Pa3P4 by Materials Project

Pa3P4 crystallizes in the cubic I-43d space group. The structure is three-dimensional. Pa4+ is bonded to eight equivalent P3- atoms to form a mixture of distorted face, edge, and corner-sharing PaP8 hexagonal bipyramids. There are four shorter (2.84 Å) and four longer (2.90 Å) Pa–P bond lengths. P3- is bonded to six equivalent Pa4+ atoms to form a mixture of distorted face, edge, and corner-sharing PPa6 octahedra. The corner-sharing octahedra tilt angles range from 15–51°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on PaP3 by Materials Project

PaP3 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Pa3+ is bonded to twelve equivalent P1- atoms to form a mixture of distorted face and corner-sharing PaP12 cuboctahedra. There are six shorter (2.79 Å) and six longer (3.06 Å) Pa–P bond lengths. P1- is bonded in a distorted hexagonal planar geometry to four equivalent Pa3+ and two equivalent P1- atoms. Both P–P bond lengths are 2.39 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on PaP2 by Materials Project

PaP2 crystallizes in the tetragonal P4/nmm space group. The structure is three-dimensional. Pa4+ is bonded in a 9-coordinate geometry to nine P2- atoms. There are a spread of Pa–P bond distances ranging from 2.80–2.92 Å. There are two inequivalent P2- sites. In the first P2- site, P2- is bonded to five equivalent Pa4+ atoms to form a mixture of distorted edge and corner-sharing PPa5 trigonal bipyramids. In the second P2- site, P2- is bonded in a 8-coordinate geometry to four equivalent Pa4+ and four equivalent P2- atoms. All P–P bond lengths are 2.73 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on PaP2 by Materials Project

PaP2 crystallizes in the tetragonal P4/nmm space group. The structure is three-dimensional. Pa4+ is bonded in a body-centered cubic geometry to eight P2- atoms. There are four shorter (2.87 Å) and four longer (2.88 Å) Pa–P bond lengths. There are two inequivalent P2- sites. In the first P2- site, P2- is bonded in a distorted hexagonal planar geometry to four equivalent Pa4+ and two equivalent P2- atoms. There are one shorter (2.27 Å) and one longer (2.48 Å) P–P bond lengths. In the second P2- site, P2- is bonded in a 6-coordinate geometry to four equivalent Pa4+ and two equivalent P2- atoms.

36 MATERIALS SCIENCE↗