Mg2Zn3Al4 crystallizes in the hexagonal P6_3/mmc space group. Mg(1) is bonded in a 13-coordinate geometry to six equivalent Zn(1), three equivalent Al(2), and four equivalent Al(1) atoms. Zn(1) is bonded in a 10-coordinate geometry to four equivalent Mg(1), four equivalent Zn(1), and two equivalent Al(2) atoms. There are two inequivalent Al sites. In the first Al site, Al(2) is bonded in a distorted q6 geometry to three equivalent Mg(1), three equivalent Zn(1), one Al(2), and three equivalent Al(1) atoms. In the second Al site, Al(1) is bonded in a 7-coordinate geometry to four equivalent Mg(1) and three equivalent Al(2) atoms.
Mg2Zn3Al4 crystallizes in the hexagonal P6_3/mmc space group. Mg(1) is bonded in a 13-coordinate geometry to six equivalent Zn(1), three equivalent Al(2), and four equivalent Al(1) atoms. All Mg(1)-Zn(1) bond lengths are 2.96 Å. All Mg(1)-Al(2) bond lengths are 2.99 Å. There is one shorter (3.02 Å) and three longer (3.12 Å) Mg(1)-Al(1) bond lengths. Zn(1) is bonded in a 10-coordinate geometry to four equivalent Mg(1), four equivalent Zn(1), and two equivalent Al(2) atoms. There are two shorter (2.47 Å) and two longer (2.51 Å) Zn(1)-Zn(1) bond lengths. Both Zn(1)-Al(2) bond lengths are 2.82 Å. There are two inequivalent Al sites. In the first Al site, Al(2) is bonded in a distorted q6 geometry to three equivalent Mg(1), three equivalent Zn(1), one Al(2), and three equivalent Al(1) atoms. The Al(2)-Al(2) bond length is 2.60 Å. All Al(2)-Al(1) bond lengths are 2.90 Å. In the second Al site, Al(1) is bonded in a 7-coordinate geometry to four equivalent Mg(1) and three equivalent Al(2) atoms.