AlMg4Zn11 crystallizes in the orthorhombic Amm2 space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 13-coordinate geometry to three equivalent Mg(2), one Zn(2), two equivalent Zn(4), three equivalent Zn(1), and four equivalent Zn(5) atoms. In the second Mg site, Mg(2) is bonded in a 10-coordinate geometry to one Mg(2), three equivalent Mg(1), one Zn(4), two equivalent Zn(5), and three equivalent Zn(1) atoms. There are five inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 10-coordinate geometry to three equivalent Mg(1), three equivalent Mg(2), one Zn(1), one Zn(4), and two equivalent Zn(5) atoms. In the second Zn site, Zn(2) is bonded in a 2-coordinate geometry to one Mg(1), one Zn(2), two equivalent Zn(4), and four equivalent Zn(5) atoms. In the third Zn site, Zn(3) is bonded in a 9-coordinate geometry to two equivalent Zn(4), four equivalent Zn(5), and three equivalent Al(1) atoms. In the fourth Zn site, Zn(4) is bonded to one Mg(2), two equivalent Mg(1), one Zn(1), one Zn(3), two equivalent Zn(2), four equivalent Zn(5), and one Al(1) atom to form a mixture of distorted face, corner, and edge-sharing ZnMg3AlZn8 cuboctahedra. In the fifth Zn site, Zn(5) is bonded to one Mg(2), two equivalent Mg(1), one Zn(1), one Zn(3), two equivalent Zn(2), two equivalent Zn(4), two equivalent Zn(5), and one Al(1) atom to form a mixture of distorted face, corner, and edge-sharing ZnMg3AlZn8 cuboctahedra. Al(1) is bonded in a 9-coordinate geometry to two equivalent Zn(4), three equivalent Zn(3), and four equivalent Zn(5) atoms.
AlMg4Zn11 crystallizes in the orthorhombic Amm2 space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 13-coordinate geometry to three equivalent Mg(2), one Zn(2), two equivalent Zn(4), three equivalent Zn(1), and four equivalent Zn(5) atoms. There is one shorter (3.06 Å) and two longer (3.11 Å) Mg(1)-Mg(2) bond lengths. The Mg(1)-Zn(2) bond length is 2.74 Å. Both Mg(1)-Zn(4) bond lengths are 3.18 Å. There is one shorter (3.03 Å) and two longer (3.14 Å) Mg(1)-Zn(1) bond lengths. There are two shorter (3.13 Å) and two longer (3.14 Å) Mg(1)-Zn(5) bond lengths. In the second Mg site, Mg(2) is bonded in a 10-coordinate geometry to one Mg(2), three equivalent Mg(1), one Zn(4), two equivalent Zn(5), and three equivalent Zn(1) atoms. The Mg(2)-Mg(2) bond length is 2.76 Å. The Mg(2)-Zn(4) bond length is 2.75 Å. Both Mg(2)-Zn(5) bond lengths are 2.75 Å. There is one shorter (3.04 Å) and two longer (3.05 Å) Mg(2)-Zn(1) bond lengths. There are five inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 10-coordinate geometry to three equivalent Mg(1), three equivalent Mg(2), one Zn(1), one Zn(4), and two equivalent Zn(5) atoms. The Zn(1)-Zn(1) bond length is 2.67 Å. The Zn(1)-Zn(4) bond length is 2.80 Å. Both Zn(1)-Zn(5) bond lengths are 2.79 Å. In the second Zn site, Zn(2) is bonded in a 2-coordinate geometry to one Mg(1), one Zn(2), two equivalent Zn(4), and four equivalent Zn(5) atoms. The Zn(2)-Zn(2) bond length is 2.44 Å. Both Zn(2)-Zn(4) bond lengths are 2.86 Å. There are two shorter (2.81 Å) and two longer (2.82 Å) Zn(2)-Zn(5) bond lengths. In the third Zn site, Zn(3) is bonded in a 9-coordinate geometry to two equivalent Zn(4), four equivalent Zn(5), and three equivalent Al(1) atoms. Both Zn(3)-Zn(4) bond lengths are 2.70 Å. All Zn(3)-Zn(5) bond lengths are 2.71 Å. There are two shorter (3.04 Å) and one longer (3.07 Å) Zn(3)-Al(1) bond length. In the fourth Zn site, Zn(4) is bonded to one Mg(2), two equivalent Mg(1), one Zn(1), one Zn(3), two equivalent Zn(2), four equivalent Zn(5), and one Al(1) atom to form a mixture of distorted face, corner, and edge-sharing ZnMg3AlZn8 cuboctahedra. All Zn(4)-Zn(5) bond lengths are 2.62 Å. The Zn(4)-Al(1) bond length is 2.71 Å. In the fifth Zn site, Zn(5) is bonded to one Mg(2), two equivalent Mg(1), one Zn(1), one Zn(3), two equivalent Zn(2), two equivalent Zn(4), two equivalent Zn(5), and one Al(1) atom to form a mixture of distorted face, corner, and edge-sharing ZnMg3AlZn8 cuboctahedra. Both Zn(5)-Zn(5) bond lengths are 2.67 Å. The Zn(5)-Al(1) bond length is 2.70 Å. Al(1) is bonded in a 9-coordinate geometry to two equivalent Zn(4), three equivalent Zn(3), and four equivalent Zn(5) atoms.