La2Ni2Mg crystallizes in the tetragonal P4/mbm space group. Mg(1) is bonded to eight equivalent La(1) and four equivalent Ni(1) atoms to form a mixture of distorted corner and face-sharing MgLa8Ni4 cuboctahedra. La(1) is bonded in a 6-coordinate geometry to four equivalent Mg(1) and six equivalent Ni(1) atoms. Ni(1) is bonded in a 9-coordinate geometry to two equivalent Mg(1), six equivalent La(1), and one Ni(1) atom.
La2Ni2Mg crystallizes in the tetragonal P4/mbm space group. Mg(1) is bonded to eight equivalent La(1) and four equivalent Ni(1) atoms to form a mixture of distorted corner and face-sharing MgLa8Ni4 cuboctahedra. All Mg(1)-La(1) bond lengths are 3.43 Å. All Mg(1)-Ni(1) bond lengths are 3.03 Å. La(1) is bonded in a 6-coordinate geometry to four equivalent Mg(1) and six equivalent Ni(1) atoms. There are two shorter (2.97 Å) and four longer (2.98 Å) La(1)-Ni(1) bond lengths. Ni(1) is bonded in a 9-coordinate geometry to two equivalent Mg(1), six equivalent La(1), and one Ni(1) atom. The Ni(1)-Ni(1) bond length is 2.58 Å.