LuNi3Al8 crystallizes in the orthorhombic Amm2 space group. Lu(1) is bonded in a 15-coordinate geometry to two equivalent Ni(2), one Al(4), two equivalent Al(2), two equivalent Al(3), four equivalent Al(1), and four equivalent Al(5) atoms. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 7-coordinate geometry to two equivalent Ni(3), one Al(3), two equivalent Al(2), and four equivalent Al(1) atoms. In the second Ni site, Ni(2) is bonded in a 9-coordinate geometry to two equivalent Lu(1), one Al(4), two equivalent Al(1), and four equivalent Al(2) atoms. In the third Ni site, Ni(3) is bonded in a 13-coordinate geometry to two equivalent Ni(1), one Al(3), two equivalent Al(1), four equivalent Al(2), and four equivalent Al(5) atoms. There are five inequivalent Al sites. In the first Al site, Al(1) is bonded in a 3-coordinate geometry to two equivalent Lu(1), one Ni(2), one Ni(3), two equivalent Ni(1), one Al(5), and two equivalent Al(2) atoms. In the second Al site, Al(2) is bonded in a 12-coordinate geometry to one Lu(1), one Ni(1), two equivalent Ni(2), two equivalent Ni(3), one Al(2), one Al(5), two equivalent Al(1), and two equivalent Al(4) atoms. In the third Al site, Al(3) is bonded in a 2-coordinate geometry to two equivalent Lu(1), one Ni(1), one Ni(3), and four equivalent Al(5) atoms. In the fourth Al site, Al(4) is bonded in a 1-coordinate geometry to one Lu(1), one Ni(2), four equivalent Al(2), and four equivalent Al(5) atoms. In the fifth Al site, Al(5) is bonded in a 10-coordinate geometry to two equivalent Lu(1), two equivalent Ni(3), one Al(1), one Al(2), two equivalent Al(3), and two equivalent Al(4) atoms.
LuNi3Al8 crystallizes in the orthorhombic Amm2 space group. Lu(1) is bonded in a 15-coordinate geometry to two equivalent Ni(2), one Al(4), two equivalent Al(2), two equivalent Al(3), four equivalent Al(1), and four equivalent Al(5) atoms. Both Lu(1)-Ni(2) bond lengths are 2.83 Å. The Lu(1)-Al(4) bond length is 2.92 Å. Both Lu(1)-Al(2) bond lengths are 3.18 Å. Both Lu(1)-Al(3) bond lengths are 3.51 Å. All Lu(1)-Al(1) bond lengths are 2.99 Å. All Lu(1)-Al(5) bond lengths are 3.27 Å. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 7-coordinate geometry to two equivalent Ni(3), one Al(3), two equivalent Al(2), and four equivalent Al(1) atoms. Both Ni(1)-Ni(3) bond lengths are 2.90 Å. The Ni(1)-Al(3) bond length is 2.39 Å. Both Ni(1)-Al(2) bond lengths are 2.37 Å. All Ni(1)-Al(1) bond lengths are 2.41 Å. In the second Ni site, Ni(2) is bonded in a 9-coordinate geometry to two equivalent Lu(1), one Al(4), two equivalent Al(1), and four equivalent Al(2) atoms. The Ni(2)-Al(4) bond length is 2.33 Å. Both Ni(2)-Al(1) bond lengths are 2.38 Å. All Ni(2)-Al(2) bond lengths are 2.53 Å. In the third Ni site, Ni(3) is bonded in a 13-coordinate geometry to two equivalent Ni(1), one Al(3), two equivalent Al(1), four equivalent Al(2), and four equivalent Al(5) atoms. The Ni(3)-Al(3) bond length is 2.78 Å. Both Ni(3)-Al(1) bond lengths are 3.05 Å. All Ni(3)-Al(2) bond lengths are 2.89 Å. All Ni(3)-Al(5) bond lengths are 3.04 Å. There are five inequivalent Al sites. In the first Al site, Al(1) is bonded in a 3-coordinate geometry to two equivalent Lu(1), one Ni(2), one Ni(3), two equivalent Ni(1), one Al(5), and two equivalent Al(2) atoms. The Al(1)-Al(5) bond length is 2.84 Å. Both Al(1)-Al(2) bond lengths are 2.80 Å. In the second Al site, Al(2) is bonded in a 12-coordinate geometry to one Lu(1), one Ni(1), two equivalent Ni(2), two equivalent Ni(3), one Al(2), one Al(5), two equivalent Al(1), and two equivalent Al(4) atoms. The Al(2)-Al(2) bond length is 2.85 Å. The Al(2)-Al(5) bond length is 2.61 Å. Both Al(2)-Al(4) bond lengths are 2.87 Å. In the third Al site, Al(3) is bonded in a 2-coordinate geometry to two equivalent Lu(1), one Ni(1), one Ni(3), and four equivalent Al(5) atoms. All Al(3)-Al(5) bond lengths are 2.71 Å. In the fourth Al site, Al(4) is bonded in a 1-coordinate geometry to one Lu(1), one Ni(2), four equivalent Al(2), and four equivalent Al(5) atoms. All Al(4)-Al(5) bond lengths are 2.84 Å. In the fifth Al site, Al(5) is bonded in a 10-coordinate geometry to two equivalent Lu(1), two equivalent Ni(3), one Al(1), one Al(2), two equivalent Al(3), and two equivalent Al(4) atoms.