DOE OSTI2020
Pr2(RhAl3)3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Pr is bonded in a 11-coordinate geometry to six Rh and eleven Al atoms. There are a spread of Pr–Rh bond distances ranging from 3.48–3.53 Å. There are a spread of Pr–Al bond distances ranging from 3.11–3.20 Å. There are two inequivalent Rh sites. In the first Rh site, Rh is bonded in a 8-coordinate geometry to four equivalent Pr and eight Al atoms. There are a spread of Rh–Al bond distances ranging from 2.61–2.65 Å. In the second Rh site, Rh is bonded in a 12-coordinate geometry to four equivalent Pr and eight Al atoms. There are a spread of Rh–Al bond distances ranging from 2.62–2.64 Å. There are four inequivalent Al sites. In the first Al site, Al is bonded in a 2-coordinate geometry to two equivalent Pr and two equivalent Rh atoms. In the second Al site, Al is bonded in a 3-coordinate geometry to three equivalent Pr and three Rh atoms. In the third Al site, Al is bonded in a 3-coordinate geometry to two equivalent Pr and three Rh atoms. In the fourth Al site, Al is bonded in a 2-coordinate geometry to two equivalent Pr and two equivalent Rh atoms.