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7 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on RhN2 by Materials Project

RhN2 is Marcasite structured and crystallizes in the orthorhombic Pnnm space group. The structure is three-dimensional. Rh4+ is bonded to six equivalent N2- atoms to form RhN6 octahedra that share corners with eight equivalent RhN6 octahedra, corners with six equivalent NRh3N tetrahedra, and edges with two equivalent RhN6 octahedra. The corner-sharing octahedral tilt angles are 69°. There are two shorter (2.10 Å) and four longer (2.14 Å) Rh–N bond lengths. N2- is bonded to three equivalent Rh4+ and one N2- atom to form NRh3N tetrahedra that share corners with three equivalent RhN6 octahedra, corners with thirteen equivalent NRh3N tetrahedra, and an edgeedge with one NRh3N tetrahedra. The corner-sharing octahedra tilt angles range from 64–65°. The N–N bond length is 1.30 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on RhN3 by Materials Project

RhN3 is Skutterudite structured and crystallizes in the cubic Im-3 space group. The structure is three-dimensional. Rh3+ is bonded to six equivalent N1- atoms to form RhN6 octahedra that share corners with six equivalent RhN6 octahedra and corners with twelve equivalent NRh2N2 tetrahedra. The corner-sharing octahedral tilt angles are 75°. All Rh–N bond lengths are 2.09 Å. N1- is bonded to two equivalent Rh3+ and two equivalent N1- atoms to form distorted NRh2N2 tetrahedra that share corners with four equivalent RhN6 octahedra, corners with ten equivalent NRh2N2 tetrahedra, and an edgeedge with one NRh2N2 tetrahedra. The corner-sharing octahedra tilt angles range from 64–65°. There is one shorter (1.47 Å) and one longer (1.54 Å) N–N bond length.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on RhN2 by Materials Project

RhN2 is Spinel-derived structured and crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Rh4+ is bonded to six N2- atoms to form RhN6 octahedra that share corners with eight equivalent RhN6 octahedra, corners with six NRh3N tetrahedra, and edges with two equivalent RhN6 octahedra. The corner-sharing octahedra tilt angles range from 68–70°. There are a spread of Rh–N bond distances ranging from 2.08–2.16 Å. There are two inequivalent N2- sites. In the first N2- site, N2- is bonded to three equivalent Rh4+ and one N2- atom to form NRh3N tetrahedra that share corners with three equivalent RhN6 octahedra, corners with thirteen NRh3N tetrahedra, and an edgeedge with one NRh3N tetrahedra. The corner-sharing octahedra tilt angles range from 65–67°. The N–N bond length is 1.31 Å. In the second N2- site, N2- is bonded to three equivalent Rh4+ and one N2- atom to form NRh3N tetrahedra that share corners with three equivalent RhN6 octahedra, corners with thirteen NRh3N tetrahedra, and an edgeedge with one NRh3N tetrahedra. The corner-sharing octahedra tilt angles range from 63–64°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on RhN by Materials Project

RhN is Molybdenum Carbide MAX Phase-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Rh3+ is bonded to six equivalent N3- atoms to form a mixture of face, edge, and corner-sharing RhN6 octahedra. The corner-sharing octahedral tilt angles are 48°. All Rh–N bond lengths are 2.18 Å. N3- is bonded to six equivalent Rh3+ atoms to form a mixture of distorted edge and corner-sharing NRh6 pentagonal pyramids.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on RhN by Materials Project

RhN is Halite, Rock Salt structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Rh3+ is bonded to six equivalent N3- atoms to form a mixture of corner and edge-sharing RhN6 octahedra. The corner-sharing octahedral tilt angles are 0°. All Rh–N bond lengths are 2.18 Å. N3- is bonded to six equivalent Rh3+ atoms to form a mixture of corner and edge-sharing NRh6 octahedra. The corner-sharing octahedral tilt angles are 0°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on RhN by Materials Project

RhN is Tungsten Carbide structured and crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. Rh3+ is bonded to six equivalent N3- atoms to form a mixture of distorted edge, corner, and face-sharing RhN6 pentagonal pyramids. All Rh–N bond lengths are 2.21 Å. N3- is bonded to six equivalent Rh3+ atoms to form a mixture of distorted edge, corner, and face-sharing NRh6 pentagonal pyramids.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on RhN by Materials Project

RhN is Zincblende, Sphalerite structured and crystallizes in the cubic F-43m space group. The structure is three-dimensional. Rh3+ is bonded to four equivalent N3- atoms to form corner-sharing RhN4 tetrahedra. All Rh–N bond lengths are 2.00 Å. N3- is bonded to four equivalent Rh3+ atoms to form corner-sharing NRh4 tetrahedra.

36 MATERIALS SCIENCE↗