MgHo4Ru crystallizes in the cubic F-43m space group. Mg(1) is bonded to three equivalent Mg(1), three equivalent Ho(1), three equivalent Ho(2), and three equivalent Ho(3) atoms to form a mixture of corner and face-sharing MgHo9Mg3 cuboctahedra. There are three inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 3-coordinate geometry to three equivalent Mg(1), three equivalent Ho(3), and three equivalent Ru(1) atoms. In the second Ho site, Ho(2) is bonded in a bent 150 degrees geometry to two equivalent Mg(1), four equivalent Ho(3), and two equivalent Ru(1) atoms. In the third Ho site, Ho(3) is bonded in a 14-coordinate geometry to two equivalent Mg(1), two equivalent Ho(1), four equivalent Ho(2), four equivalent Ho(3), and two equivalent Ru(1) atoms. Ru(1) is bonded in a 6-coordinate geometry to three equivalent Ho(1), three equivalent Ho(2), and three equivalent Ho(3) atoms.
MgHo4Ru crystallizes in the cubic F-43m space group. Mg(1) is bonded to three equivalent Mg(1), three equivalent Ho(1), three equivalent Ho(2), and three equivalent Ho(3) atoms to form a mixture of corner and face-sharing MgHo9Mg3 cuboctahedra. All Mg(1)-Mg(1) bond lengths are 3.04 Å. All Mg(1)-Ho(1) bond lengths are 3.53 Å. All Mg(1)-Ho(2) bond lengths are 3.53 Å. All Mg(1)-Ho(3) bond lengths are 3.30 Å. There are three inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 3-coordinate geometry to three equivalent Mg(1), three equivalent Ho(3), and three equivalent Ru(1) atoms. All Ho(1)-Ho(3) bond lengths are 3.47 Å. All Ho(1)-Ru(1) bond lengths are 2.80 Å. In the second Ho site, Ho(2) is bonded in a bent 150 degrees geometry to two equivalent Mg(1), four equivalent Ho(3), and two equivalent Ru(1) atoms. All Ho(2)-Ho(3) bond lengths are 3.61 Å. Both Ho(2)-Ru(1) bond lengths are 2.75 Å. In the third Ho site, Ho(3) is bonded in a 14-coordinate geometry to two equivalent Mg(1), two equivalent Ho(1), four equivalent Ho(2), four equivalent Ho(3), and two equivalent Ru(1) atoms. All Ho(3)-Ho(3) bond lengths are 3.62 Å. Both Ho(3)-Ru(1) bond lengths are 3.47 Å. Ru(1) is bonded in a 6-coordinate geometry to three equivalent Ho(1), three equivalent Ho(2), and three equivalent Ho(3) atoms.