LuNiGa4 crystallizes in the orthorhombic Cmcm space group. Lu(1) is bonded in a 15-coordinate geometry to two equivalent Ni(1), three equivalent Ga(2), four equivalent Ga(1), and six equivalent Ga(3) atoms. Ni(1) is bonded in a 9-coordinate geometry to two equivalent Lu(1), one Ga(2), and six equivalent Ga(3) atoms. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a distorted q6 geometry to four equivalent Lu(1), two equivalent Ga(3), and four equivalent Ga(2) atoms. In the second Ga site, Ga(2) is bonded in a distorted linear geometry to three equivalent Lu(1), one Ni(1), four equivalent Ga(1), and four equivalent Ga(3) atoms. In the third Ga site, Ga(3) is bonded in a 12-coordinate geometry to three equivalent Lu(1), three equivalent Ni(1), one Ga(1), two equivalent Ga(2), and three equivalent Ga(3) atoms.
LuNiGa4 crystallizes in the orthorhombic Cmcm space group. Lu(1) is bonded in a 15-coordinate geometry to two equivalent Ni(1), three equivalent Ga(2), four equivalent Ga(1), and six equivalent Ga(3) atoms. Both Lu(1)-Ni(1) bond lengths are 3.07 Å. There is one shorter (2.86 Å) and two longer (3.39 Å) Lu(1)-Ga(2) bond lengths. All Lu(1)-Ga(1) bond lengths are 3.19 Å. There are four shorter (3.01 Å) and two longer (3.21 Å) Lu(1)-Ga(3) bond lengths. Ni(1) is bonded in a 9-coordinate geometry to two equivalent Lu(1), one Ga(2), and six equivalent Ga(3) atoms. The Ni(1)-Ga(2) bond length is 2.35 Å. There are two shorter (2.40 Å) and four longer (2.51 Å) Ni(1)-Ga(3) bond lengths. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a distorted q6 geometry to four equivalent Lu(1), two equivalent Ga(3), and four equivalent Ga(2) atoms. Both Ga(1)-Ga(3) bond lengths are 2.79 Å. All Ga(1)-Ga(2) bond lengths are 2.83 Å. In the second Ga site, Ga(2) is bonded in a distorted linear geometry to three equivalent Lu(1), one Ni(1), four equivalent Ga(1), and four equivalent Ga(3) atoms. All Ga(2)-Ga(3) bond lengths are 2.97 Å. In the third Ga site, Ga(3) is bonded in a 12-coordinate geometry to three equivalent Lu(1), three equivalent Ni(1), one Ga(1), two equivalent Ga(2), and three equivalent Ga(3) atoms. There is one shorter (2.63 Å) and two longer (2.92 Å) Ga(3)-Ga(3) bond lengths.