MgYbGa4 crystallizes in the hexagonal P-6m2 space group. Mg(1) is bonded in a 6-coordinate geometry to six equivalent Ga(1) and six equivalent Ga(2) atoms. Yb(1) is bonded in a 6-coordinate geometry to six equivalent Ga(1) and six equivalent Ga(2) atoms. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 10-coordinate geometry to three equivalent Mg(1), three equivalent Yb(1), one Ga(1), and three equivalent Ga(2) atoms. In the second Ga site, Ga(2) is bonded in a 10-coordinate geometry to three equivalent Mg(1), three equivalent Yb(1), one Ga(2), and three equivalent Ga(1) atoms.
MgYbGa4 crystallizes in the hexagonal P-6m2 space group. Mg(1) is bonded in a 6-coordinate geometry to six equivalent Ga(1) and six equivalent Ga(2) atoms. All Mg(1)-Ga(1) bond lengths are 3.23 Å. All Mg(1)-Ga(2) bond lengths are 2.85 Å. Yb(1) is bonded in a 6-coordinate geometry to six equivalent Ga(1) and six equivalent Ga(2) atoms. All Yb(1)-Ga(1) bond lengths are 2.88 Å. All Yb(1)-Ga(2) bond lengths are 3.26 Å. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 10-coordinate geometry to three equivalent Mg(1), three equivalent Yb(1), one Ga(1), and three equivalent Ga(2) atoms. The Ga(1)-Ga(1) bond length is 2.87 Å. All Ga(1)-Ga(2) bond lengths are 2.58 Å. In the second Ga site, Ga(2) is bonded in a 10-coordinate geometry to three equivalent Mg(1), three equivalent Yb(1), one Ga(2), and three equivalent Ga(1) atoms. The Ga(2)-Ga(2) bond length is 2.77 Å.