MgPr4Rh crystallizes in the cubic F-43m space group. Mg(1) is bonded to three equivalent Mg(1), three equivalent Pr(1), three equivalent Pr(2), and three equivalent Pr(3) atoms to form a mixture of face and corner-sharing MgPr9Mg3 cuboctahedra. There are three inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 3-coordinate geometry to three equivalent Mg(1) and three equivalent Rh(1) atoms. In the second Pr site, Pr(2) is bonded in a bent 150 degrees geometry to two equivalent Mg(1) and two equivalent Rh(1) atoms. In the third Pr site, Pr(3) is bonded in a 4-coordinate geometry to two equivalent Mg(1) and two equivalent Rh(1) atoms. Rh(1) is bonded in a 6-coordinate geometry to three equivalent Pr(1), three equivalent Pr(2), and three equivalent Pr(3) atoms.
MgPr4Rh crystallizes in the cubic F-43m space group. Mg(1) is bonded to three equivalent Mg(1), three equivalent Pr(1), three equivalent Pr(2), and three equivalent Pr(3) atoms to form a mixture of face and corner-sharing MgPr9Mg3 cuboctahedra. All Mg(1)-Mg(1) bond lengths are 3.17 Å. All Mg(1)-Pr(1) bond lengths are 3.64 Å. All Mg(1)-Pr(2) bond lengths are 3.68 Å. All Mg(1)-Pr(3) bond lengths are 3.46 Å. There are three inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 3-coordinate geometry to three equivalent Mg(1) and three equivalent Rh(1) atoms. All Pr(1)-Rh(1) bond lengths are 2.92 Å. In the second Pr site, Pr(2) is bonded in a bent 150 degrees geometry to two equivalent Mg(1) and two equivalent Rh(1) atoms. Both Pr(2)-Rh(1) bond lengths are 2.93 Å. In the third Pr site, Pr(3) is bonded in a 4-coordinate geometry to two equivalent Mg(1) and two equivalent Rh(1) atoms. Both Pr(3)-Rh(1) bond lengths are 3.64 Å. Rh(1) is bonded in a 6-coordinate geometry to three equivalent Pr(1), three equivalent Pr(2), and three equivalent Pr(3) atoms.