YbNiGa4 crystallizes in the orthorhombic Cmcm space group. Yb(1) is bonded in a 15-coordinate geometry to two equivalent Ni(1), three equivalent Ga(3), four equivalent Ga(2), and six equivalent Ga(1) atoms. Ni(1) is bonded in a 9-coordinate geometry to two equivalent Yb(1), one Ga(3), and six equivalent Ga(1) atoms. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 5-coordinate geometry to three equivalent Yb(1), three equivalent Ni(1), and one Ga(2) atom. In the second Ga site, Ga(2) is bonded in a distorted q6 geometry to four equivalent Yb(1), two equivalent Ga(1), and four equivalent Ga(3) atoms. In the third Ga site, Ga(3) is bonded in a 2-coordinate geometry to three equivalent Yb(1), one Ni(1), and four equivalent Ga(2) atoms.
YbNiGa4 crystallizes in the orthorhombic Cmcm space group. Yb(1) is bonded in a 15-coordinate geometry to two equivalent Ni(1), three equivalent Ga(3), four equivalent Ga(2), and six equivalent Ga(1) atoms. Both Yb(1)-Ni(1) bond lengths are 3.05 Å. There is one shorter (2.92 Å) and two longer (3.35 Å) Yb(1)-Ga(3) bond lengths. All Yb(1)-Ga(2) bond lengths are 3.21 Å. There are four shorter (2.96 Å) and two longer (3.13 Å) Yb(1)-Ga(1) bond lengths. Ni(1) is bonded in a 9-coordinate geometry to two equivalent Yb(1), one Ga(3), and six equivalent Ga(1) atoms. The Ni(1)-Ga(3) bond length is 2.33 Å. There are two shorter (2.39 Å) and four longer (2.47 Å) Ni(1)-Ga(1) bond lengths. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 5-coordinate geometry to three equivalent Yb(1), three equivalent Ni(1), and one Ga(2) atom. The Ga(1)-Ga(2) bond length is 2.81 Å. In the second Ga site, Ga(2) is bonded in a distorted q6 geometry to four equivalent Yb(1), two equivalent Ga(1), and four equivalent Ga(3) atoms. All Ga(2)-Ga(3) bond lengths are 2.80 Å. In the third Ga site, Ga(3) is bonded in a 2-coordinate geometry to three equivalent Yb(1), one Ni(1), and four equivalent Ga(2) atoms.