BaMg6Al crystallizes in the orthorhombic Amm2 space group. Ba(1) is bonded in a 10-coordinate geometry to two equivalent Mg(1), two equivalent Mg(4), four equivalent Mg(2), and two equivalent Al(1) atoms. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 1-coordinate geometry to one Ba(1), two equivalent Mg(2), two equivalent Mg(4), and one Al(1) atom. In the second Mg site, Mg(2) is bonded in a 9-coordinate geometry to two equivalent Ba(1), one Mg(4), two equivalent Mg(1), two equivalent Mg(2), and two equivalent Al(1) atoms. In the third Mg site, Mg(3) is bonded in a 2-coordinate geometry to two equivalent Mg(4) atoms. In the fourth Mg site, Mg(4) is bonded in a 10-coordinate geometry to two equivalent Ba(1), two equivalent Mg(2), two equivalent Mg(3), and four equivalent Mg(1) atoms. Al(1) is bonded in a 8-coordinate geometry to two equivalent Ba(1), two equivalent Mg(1), and four equivalent Mg(2) atoms.
BaMg6Al crystallizes in the orthorhombic Amm2 space group. Ba(1) is bonded in a 10-coordinate geometry to two equivalent Mg(1), two equivalent Mg(4), four equivalent Mg(2), and two equivalent Al(1) atoms. Both Ba(1)-Mg(1) bond lengths are 3.66 Å. Both Ba(1)-Mg(4) bond lengths are 3.48 Å. All Ba(1)-Mg(2) bond lengths are 3.51 Å. Both Ba(1)-Al(1) bond lengths are 3.41 Å. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 1-coordinate geometry to one Ba(1), two equivalent Mg(2), two equivalent Mg(4), and one Al(1) atom. Both Mg(1)-Mg(2) bond lengths are 3.14 Å. Both Mg(1)-Mg(4) bond lengths are 3.09 Å. The Mg(1)-Al(1) bond length is 2.94 Å. In the second Mg site, Mg(2) is bonded in a 9-coordinate geometry to two equivalent Ba(1), one Mg(4), two equivalent Mg(1), two equivalent Mg(2), and two equivalent Al(1) atoms. The Mg(2)-Mg(4) bond length is 3.17 Å. There is one shorter (3.08 Å) and one longer (3.16 Å) Mg(2)-Mg(2) bond length. Both Mg(2)-Al(1) bond lengths are 2.98 Å. In the third Mg site, Mg(3) is bonded in a 2-coordinate geometry to two equivalent Mg(4) atoms. Both Mg(3)-Mg(4) bond lengths are 3.33 Å. In the fourth Mg site, Mg(4) is bonded in a 10-coordinate geometry to two equivalent Ba(1), two equivalent Mg(2), two equivalent Mg(3), and four equivalent Mg(1) atoms. Al(1) is bonded in a 8-coordinate geometry to two equivalent Ba(1), two equivalent Mg(1), and four equivalent Mg(2) atoms.