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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on P2Rh by Materials Project

RhP2 is Spinel-derived structured and crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Rh4+ is bonded to six P2- atoms to form RhP6 octahedra that share corners with eight equivalent RhP6 octahedra, corners with six PPRh3 tetrahedra, and edges with two equivalent RhP6 octahedra. The corner-sharing octahedra tilt angles range from 56–61°. There are a spread of Rh–P bond distances ranging from 2.34–2.43 Å. There are two inequivalent P2- sites. In the first P2- site, P2- is bonded to three equivalent Rh4+ and one P2- atom to form PPRh3 tetrahedra that share corners with three equivalent RhP6 octahedra, corners with thirteen PPRh3 tetrahedra, and an edgeedge with one PPRh3 tetrahedra. The corner-sharing octahedra tilt angles range from 68–70°. The P–P bond length is 2.23 Å. In the second P2- site, P2- is bonded to three equivalent Rh4+ and one P2- atom to form PPRh3 tetrahedra that share corners with three equivalent RhP6 octahedra, corners with thirteen PPRh3 tetrahedra, and an edgeedge with one PPRh3 tetrahedra. The corner-sharing octahedra tilt angles range from 72–77°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on PRh2 by Materials Project

Rh2P is Fluorite structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Rh is bonded to four equivalent P atoms to form a mixture of distorted edge and corner-sharing RhP4 tetrahedra. All Rh–P bond lengths are 2.41 Å. P is bonded in a body-centered cubic geometry to eight equivalent Rh atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on P2Rh3 by Materials Project

Rh3P2 crystallizes in the tetragonal P-4m2 space group. The structure is three-dimensional. there are two inequivalent Rh sites. In the first Rh site, Rh is bonded in a 4-coordinate geometry to four equivalent P atoms. All Rh–P bond lengths are 2.33 Å. In the second Rh site, Rh is bonded in a 5-coordinate geometry to five equivalent P atoms. There are one shorter (2.36 Å) and four longer (2.48 Å) Rh–P bond lengths. P is bonded to seven Rh atoms to form a mixture of distorted edge, corner, and face-sharing PRh7 pentagonal bipyramids.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on P3Rh4 by Materials Project

Rh4P3 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are four inequivalent Rh sites. In the first Rh site, Rh is bonded in a 5-coordinate geometry to five P atoms. There are a spread of Rh–P bond distances ranging from 2.36–2.48 Å. In the second Rh site, Rh is bonded in a 5-coordinate geometry to five P atoms. There are a spread of Rh–P bond distances ranging from 2.29–2.62 Å. In the third Rh site, Rh is bonded in a 5-coordinate geometry to five P atoms. There are a spread of Rh–P bond distances ranging from 2.30–2.47 Å. In the fourth Rh site, Rh is bonded in a 5-coordinate geometry to five P atoms. There are a spread of Rh–P bond distances ranging from 2.28–2.55 Å. There are three inequivalent P sites. In the first P site, P is bonded in a 7-coordinate geometry to seven Rh atoms. In the second P site, P is bonded in a 7-coordinate geometry to seven Rh atoms. In the third P site, P is bonded in a 6-coordinate geometry to six Rh atoms.

36 MATERIALS SCIENCE↗