Lu4NiMg crystallizes in the cubic F-43m space group. Mg(1) is bonded to three equivalent Mg(1), three equivalent Lu(1), three equivalent Lu(2), and three equivalent Lu(3) atoms to form a mixture of face and corner-sharing MgLu9Mg3 cuboctahedra. There are three inequivalent Lu sites. In the first Lu site, Lu(1) is bonded in a 3-coordinate geometry to three equivalent Mg(1), three equivalent Lu(3), and three equivalent Ni(1) atoms. In the second Lu site, Lu(2) is bonded in a bent 150 degrees geometry to two equivalent Mg(1), four equivalent Lu(3), and two equivalent Ni(1) atoms. In the third Lu site, Lu(3) is bonded in a 14-coordinate geometry to two equivalent Mg(1), two equivalent Lu(1), four equivalent Lu(2), four equivalent Lu(3), and two equivalent Ni(1) atoms. Ni(1) is bonded in a 6-coordinate geometry to three equivalent Lu(1), three equivalent Lu(2), and three equivalent Lu(3) atoms.
Lu4NiMg crystallizes in the cubic F-43m space group. Mg(1) is bonded to three equivalent Mg(1), three equivalent Lu(1), three equivalent Lu(2), and three equivalent Lu(3) atoms to form a mixture of face and corner-sharing MgLu9Mg3 cuboctahedra. All Mg(1)-Mg(1) bond lengths are 3.01 Å. All Mg(1)-Lu(1) bond lengths are 3.41 Å. All Mg(1)-Lu(2) bond lengths are 3.44 Å. All Mg(1)-Lu(3) bond lengths are 3.21 Å. There are three inequivalent Lu sites. In the first Lu site, Lu(1) is bonded in a 3-coordinate geometry to three equivalent Mg(1), three equivalent Lu(3), and three equivalent Ni(1) atoms. All Lu(1)-Lu(3) bond lengths are 3.42 Å. All Lu(1)-Ni(1) bond lengths are 2.72 Å. In the second Lu site, Lu(2) is bonded in a bent 150 degrees geometry to two equivalent Mg(1), four equivalent Lu(3), and two equivalent Ni(1) atoms. All Lu(2)-Lu(3) bond lengths are 3.53 Å. Both Lu(2)-Ni(1) bond lengths are 2.74 Å. In the third Lu site, Lu(3) is bonded in a 14-coordinate geometry to two equivalent Mg(1), two equivalent Lu(1), four equivalent Lu(2), four equivalent Lu(3), and two equivalent Ni(1) atoms. All Lu(3)-Lu(3) bond lengths are 3.50 Å. Both Lu(3)-Ni(1) bond lengths are 3.41 Å. Ni(1) is bonded in a 6-coordinate geometry to three equivalent Lu(1), three equivalent Lu(2), and three equivalent Lu(3) atoms.