Mg6LaAl crystallizes in the orthorhombic Amm2 space group. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 11-coordinate geometry to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent La(1), and one Al(1) atom. In the second Mg site, Mg(2) is bonded in a 10-coordinate geometry to one Mg(3), one Mg(4), two equivalent Mg(1), two equivalent Mg(2), two equivalent La(1), and two equivalent Al(1) atoms. In the third Mg site, Mg(3) is bonded in a 2-coordinate geometry to two equivalent Mg(2), two equivalent Mg(4), four equivalent Mg(1), and two equivalent Al(1) atoms. In the fourth Mg site, Mg(4) is bonded in a 10-coordinate geometry to two equivalent Mg(2), two equivalent Mg(3), four equivalent Mg(1), and two equivalent La(1) atoms. La(1) is bonded in a 10-coordinate geometry to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(2), and two equivalent Al(1) atoms. Al(1) is bonded in a 10-coordinate geometry to two equivalent Mg(1), two equivalent Mg(3), four equivalent Mg(2), and two equivalent La(1) atoms.
Mg6LaAl crystallizes in the orthorhombic Amm2 space group. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 11-coordinate geometry to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent La(1), and one Al(1) atom. There is one shorter (2.98 Å) and one longer (3.15 Å) Mg(1)-Mg(1) bond length. Both Mg(1)-Mg(2) bond lengths are 3.06 Å. Both Mg(1)-Mg(3) bond lengths are 3.49 Å. Both Mg(1)-Mg(4) bond lengths are 3.07 Å. There is one shorter (3.56 Å) and one longer (3.79 Å) Mg(1)-La(1) bond length. The Mg(1)-Al(1) bond length is 3.05 Å. In the second Mg site, Mg(2) is bonded in a 10-coordinate geometry to one Mg(3), one Mg(4), two equivalent Mg(1), two equivalent Mg(2), two equivalent La(1), and two equivalent Al(1) atoms. The Mg(2)-Mg(3) bond length is 3.25 Å. The Mg(2)-Mg(4) bond length is 3.19 Å. There is one shorter (3.06 Å) and one longer (3.07 Å) Mg(2)-Mg(2) bond length. Both Mg(2)-La(1) bond lengths are 3.33 Å. Both Mg(2)-Al(1) bond lengths are 3.00 Å. In the third Mg site, Mg(3) is bonded in a 2-coordinate geometry to two equivalent Mg(2), two equivalent Mg(4), four equivalent Mg(1), and two equivalent Al(1) atoms. Both Mg(3)-Mg(4) bond lengths are 3.23 Å. Both Mg(3)-Al(1) bond lengths are 3.22 Å. In the fourth Mg site, Mg(4) is bonded in a 10-coordinate geometry to two equivalent Mg(2), two equivalent Mg(3), four equivalent Mg(1), and two equivalent La(1) atoms. Both Mg(4)-La(1) bond lengths are 3.31 Å. La(1) is bonded in a 10-coordinate geometry to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(2), and two equivalent Al(1) atoms. Both La(1)-Al(1) bond lengths are 3.19 Å. Al(1) is bonded in a 10-coordinate geometry to two equivalent Mg(1), two equivalent Mg(3), four equivalent Mg(2), and two equivalent La(1) atoms.