YbNiGa4 crystallizes in the orthorhombic Cmcm space group. Yb(1) is bonded in a 8-coordinate geometry to two equivalent Ni(1), two equivalent Ga(1), and four equivalent Ga(3) atoms. Ni(1) is bonded in a 9-coordinate geometry to two equivalent Yb(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 square co-planar geometry to two equivalent Yb(1) and two equivalent Ga(2) atoms. In the second Ga site, Ga(2) is bonded in a 7-coordinate geometry to one Ni(1), two equivalent Ga(1), and four equivalent Ga(3) atoms. In the third Ga site, Ga(3) is bonded in a 5-coordinate geometry to two equivalent Yb(1), three equivalent Ni(1), and two equivalent Ga(2) atoms.
YbNiGa4 crystallizes in the orthorhombic Cmcm space group. Yb(1) is bonded in a 8-coordinate geometry to two equivalent Ni(1), two equivalent Ga(1), and four equivalent Ga(3) atoms. Both Yb(1)-Ni(1) bond lengths are 2.84 Å. Both Yb(1)-Ga(1) bond lengths are 3.12 Å. All Yb(1)-Ga(3) bond lengths are 3.04 Å. Ni(1) is bonded in a 9-coordinate geometry to two equivalent Yb(1), one Ga(2), and six equivalent Ga(3) atoms. The Ni(1)-Ga(2) bond length is 2.49 Å. There are four shorter (2.48 Å) and two longer (2.54 Å) Ni(1)-Ga(3) bond lengths. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a square co-planar geometry to two equivalent Yb(1) and two equivalent Ga(2) atoms. Both Ga(1)-Ga(2) bond lengths are 2.57 Å. In the second Ga site, Ga(2) is bonded in a 7-coordinate geometry to one Ni(1), two equivalent Ga(1), and four equivalent Ga(3) atoms. All Ga(2)-Ga(3) bond lengths are 2.89 Å. In the third Ga site, Ga(3) is bonded in a 5-coordinate geometry to two equivalent Yb(1), three equivalent Ni(1), and two equivalent Ga(2) atoms.