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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on UAlRh by Materials Project

URhAl crystallizes in the hexagonal P-62m space group. The structure is three-dimensional. U is bonded in a 5-coordinate geometry to five Rh atoms. There are one shorter (2.90 Å) and four longer (2.92 Å) U–Rh bond lengths. There are two inequivalent Rh sites. In the first Rh site, Rh is bonded in a 9-coordinate geometry to three equivalent U and six equivalent Al atoms. All Rh–Al bond lengths are 2.63 Å. In the second Rh site, Rh is bonded in a 9-coordinate geometry to six equivalent U and three equivalent Al atoms. All Rh–Al bond lengths are 2.67 Å. Al is bonded to four Rh atoms to form a mixture of distorted corner and edge-sharing AlRh4 tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on U2(Al3Rh)3 by Materials Project

U2(RhAl3)3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. U is bonded in a 11-coordinate geometry to six Rh and eleven Al atoms. There are a spread of U–Rh bond distances ranging from 3.43–3.47 Å. There are a spread of U–Al bond distances ranging from 3.05–3.18 Å. There are two inequivalent Rh sites. In the first Rh site, Rh is bonded in a 8-coordinate geometry to four equivalent U and eight Al atoms. There are a spread of Rh–Al bond distances ranging from 2.56–2.65 Å. In the second Rh site, Rh is bonded in a 8-coordinate geometry to four equivalent U and eight Al atoms. There are a spread of Rh–Al bond distances ranging from 2.55–2.63 Å. There are four inequivalent Al sites. In the first Al site, Al is bonded in a 2-coordinate geometry to two equivalent U and two equivalent Rh atoms. In the second Al site, Al is bonded in a 3-coordinate geometry to three equivalent U and three Rh atoms. In the third Al site, Al is bonded in a 3-coordinate geometry to two equivalent U and three Rh atoms. In the fourth Al site, Al is bonded in a 2-coordinate geometry to two equivalent U and two equivalent Rh atoms.

36 MATERIALS SCIENCE↗