MgGd4Ru crystallizes in the cubic F-43m space group. Mg(1) is bonded to three equivalent Mg(1), three equivalent Gd(1), three equivalent Gd(2), and three equivalent Gd(3) atoms to form a mixture of face and corner-sharing MgGd9Mg3 cuboctahedra. There are three inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 3-coordinate geometry to three equivalent Mg(1), three equivalent Gd(3), and three equivalent Ru(1) atoms. In the second Gd site, Gd(2) is bonded in a bent 150 degrees geometry to two equivalent Mg(1), four equivalent Gd(3), and two equivalent Ru(1) atoms. In the third Gd site, Gd(3) is bonded in a 14-coordinate geometry to two equivalent Mg(1), two equivalent Gd(1), four equivalent Gd(2), four equivalent Gd(3), and two equivalent Ru(1) atoms. Ru(1) is bonded in a 6-coordinate geometry to three equivalent Gd(1), three equivalent Gd(2), and three equivalent Gd(3) atoms.
MgGd4Ru crystallizes in the cubic F-43m space group. Mg(1) is bonded to three equivalent Mg(1), three equivalent Gd(1), three equivalent Gd(2), and three equivalent Gd(3) atoms to form a mixture of face and corner-sharing MgGd9Mg3 cuboctahedra. All Mg(1)-Mg(1) bond lengths are 3.10 Å. All Mg(1)-Gd(1) bond lengths are 3.57 Å. All Mg(1)-Gd(2) bond lengths are 3.60 Å. All Mg(1)-Gd(3) bond lengths are 3.36 Å. There are three inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 3-coordinate geometry to three equivalent Mg(1), three equivalent Gd(3), and three equivalent Ru(1) atoms. All Gd(1)-Gd(3) bond lengths are 3.54 Å. All Gd(1)-Ru(1) bond lengths are 2.87 Å. In the second Gd site, Gd(2) is bonded in a bent 150 degrees geometry to two equivalent Mg(1), four equivalent Gd(3), and two equivalent Ru(1) atoms. All Gd(2)-Gd(3) bond lengths are 3.68 Å. Both Gd(2)-Ru(1) bond lengths are 2.80 Å. In the third Gd site, Gd(3) is bonded in a 14-coordinate geometry to two equivalent Mg(1), two equivalent Gd(1), four equivalent Gd(2), four equivalent Gd(3), and two equivalent Ru(1) atoms. All Gd(3)-Gd(3) bond lengths are 3.68 Å. Both Gd(3)-Ru(1) bond lengths are 3.54 Å. Ru(1) is bonded in a 6-coordinate geometry to three equivalent Gd(1), three equivalent Gd(2), and three equivalent Gd(3) atoms.