Lu3(Ni3Si)2 crystallizes in the cubic Im-3m space group. Lu(1) is bonded in a 12-coordinate geometry to eight equivalent Ni(1) and four equivalent Si(1) atoms. Ni(1) is bonded in a 10-coordinate geometry to four equivalent Lu(1), four equivalent Ni(1), and two equivalent Si(1) atoms. Si(1) is bonded to six equivalent Lu(1) and six equivalent Ni(1) atoms to form a mixture of face and corner-sharing SiLu6Ni6 cuboctahedra.
Lu3(Ni3Si)2 crystallizes in the cubic Im-3m space group. Lu(1) is bonded in a 12-coordinate geometry to eight equivalent Ni(1) and four equivalent Si(1) atoms. There are four shorter (2.78 Å) and four longer (2.89 Å) Lu(1)-Ni(1) bond lengths. All Lu(1)-Si(1) bond lengths are 3.06 Å. Ni(1) is bonded in a 10-coordinate geometry to four equivalent Lu(1), four equivalent Ni(1), and two equivalent Si(1) atoms. All Ni(1)-Ni(1) bond lengths are 2.49 Å. Both Ni(1)-Si(1) bond lengths are 2.37 Å. Si(1) is bonded to six equivalent Lu(1) and six equivalent Ni(1) atoms to form a mixture of face and corner-sharing SiLu6Ni6 cuboctahedra.