Zr4Al11Si is beta Cu3Ti-derived structured and crystallizes in the orthorhombic Pmmm space group. There are two inequivalent Zr sites. In the first Zr site, Zr(1) is bonded to two equivalent Al(3), two equivalent Al(4), two equivalent Al(5), two equivalent Al(7), and four equivalent Al(2) atoms to form ZrAl12 cuboctahedra that share corners with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, corners with eight equivalent Zr(1)Al12 cuboctahedra, edges with four equivalent Zr(2)Al10Si2 cuboctahedra, edges with four equivalent Al(2)Zr4Al8 cuboctahedra, edges with four equivalent Al(3)Zr4Al8 cuboctahedra, edges with four equivalent Al(4)Zr4Al8 cuboctahedra, edges with four equivalent Al(5)Zr4Al8 cuboctahedra, edges with four equivalent Al(7)Zr4Al8 cuboctahedra,  a faceface with one Al(1)Zr4Al6Si2 cuboctahedra, faces with two equivalent Al(3)Zr4Al8 cuboctahedra, faces with two equivalent Al(4)Zr4Al8 cuboctahedra, faces with two equivalent Al(5)Zr4Al8 cuboctahedra, faces with two equivalent Al(7)Zr4Al8 cuboctahedra, faces with four equivalent Al(2)Zr4Al8 cuboctahedra, and faces with five equivalent Zr(1)Al12 cuboctahedra. In the second Zr site, Zr(2) is bonded to two equivalent Al(3), two equivalent Al(4), two equivalent Al(6), four equivalent Al(1), and two equivalent Si(1) atoms to form ZrAl10Si2 cuboctahedra that share corners with four equivalent Al(2)Zr4Al8 cuboctahedra, corners with eight equivalent Zr(2)Al10Si2 cuboctahedra, edges with four equivalent Zr(1)Al12 cuboctahedra, edges with four equivalent Al(6)Zr4Al4Si4 cuboctahedra, edges with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, edges with four equivalent Al(3)Zr4Al8 cuboctahedra, edges with four equivalent Al(4)Zr4Al8 cuboctahedra, edges with four equivalent Si(1)Zr4Al8 cuboctahedra,  a faceface with one Al(2)Zr4Al8 cuboctahedra, faces with two equivalent Al(6)Zr4Al4Si4 cuboctahedra, faces with two equivalent Al(3)Zr4Al8 cuboctahedra, faces with two equivalent Al(4)Zr4Al8 cuboctahedra, faces with two equivalent Si(1)Zr4Al8 cuboctahedra, faces with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, and faces with five equivalent Zr(2)Al10Si2 cuboctahedra. There are seven inequivalent Al sites. In the first Al site, Al(1) is bonded to four equivalent Zr(2), two equivalent Al(3), two equivalent Al(4), two equivalent Al(6), and two equivalent Si(1) atoms to form distorted AlZr4Al6Si2 cuboctahedra that share corners with four equivalent Zr(1)Al12 cuboctahedra, corners with eight equivalent Al(1)Zr4Al6Si2 cuboctahedra, edges with four equivalent Zr(2)Al10Si2 cuboctahedra, edges with four equivalent Al(6)Zr4Al4Si4 cuboctahedra, edges with four equivalent Al(2)Zr4Al8 cuboctahedra, edges with four equivalent Al(3)Zr4Al8 cuboctahedra, edges with four equivalent Al(4)Zr4Al8 cuboctahedra, edges with four equivalent Si(1)Zr4Al8 cuboctahedra,  a faceface with one Zr(1)Al12 cuboctahedra, faces with two equivalent Al(6)Zr4Al4Si4 cuboctahedra, faces with two equivalent Al(3)Zr4Al8 cuboctahedra, faces with two equivalent Al(4)Zr4Al8 cuboctahedra, faces with two equivalent Si(1)Zr4Al8 cuboctahedra, faces with four equivalent Zr(2)Al10Si2 cuboctahedra, and faces with five equivalent Al(1)Zr4Al6Si2 cuboctahedra. In the second Al site, Al(2) is bonded to four equivalent Zr(1), two equivalent Al(3), two equivalent Al(4), two equivalent Al(5), and two equivalent Al(7) atoms to form distorted AlZr4Al8 cuboctahedra that share corners with four equivalent Zr(2)Al10Si2 cuboctahedra, corners with eight equivalent Al(2)Zr4Al8 cuboctahedra, edges with four equivalent Zr(1)Al12 cuboctahedra, edges with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, edges with four equivalent Al(3)Zr4Al8 cuboctahedra, edges with four equivalent Al(4)Zr4Al8 cuboctahedra, edges with four equivalent Al(5)Zr4Al8 cuboctahedra, edges with four equivalent Al(7)Zr4Al8 cuboctahedra,  a faceface with one Zr(2)Al10Si2 cuboctahedra, faces with two equivalent Al(3)Zr4Al8 cuboctahedra, faces with two equivalent Al(4)Zr4Al8 cuboctahedra, faces with two equivalent Al(5)Zr4Al8 cuboctahedra, faces with two equivalent Al(7)Zr4Al8 cuboctahedra, faces with four equivalent Zr(1)Al12 cuboctahedra, and faces with five equivalent Al(2)Zr4Al8 cuboctahedra. In the third Al site, Al(3) is bonded to two equivalent Zr(1), two equivalent Zr(2), two equivalent Al(1), two equivalent Al(2), and four equivalent Al(4) atoms to form AlZr4Al8 cuboctahedra that share corners with four equivalent Al(6)Zr4Al4Si4 cuboctahedra, corners with four equivalent Al(3)Zr4Al8 cuboctahedra, corners with four equivalent Al(5)Zr4Al8 cuboctahedra, edges with four equivalent Zr(2)Al10Si2 cuboctahedra, edges with four equivalent Zr(1)Al12 cuboctahedra, edges with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, edges with four equivalent Al(2)Zr4Al8 cuboctahedra, edges with four equivalent Al(7)Zr4Al8 cuboctahedra, edges with four equivalent Si(1)Zr4Al8 cuboctahedra,  a faceface with one Al(6)Zr4Al4Si4 cuboctahedra,  a faceface with one Al(5)Zr4Al8 cuboctahedra, faces with two equivalent Zr(2)Al10Si2 cuboctahedra, faces with two equivalent Zr(1)Al12 cuboctahedra, faces with two equivalent Al(1)Zr4Al6Si2 cuboctahedra, faces with two equivalent Al(2)Zr4Al8 cuboctahedra, faces with four equivalent Al(3)Zr4Al8 cuboctahedra, and faces with four equivalent Al(4)Zr4Al8 cuboctahedra. In the fourth Al site, Al(4) is bonded to two equivalent Zr(1), two equivalent Zr(2), two equivalent Al(1), two equivalent Al(2), and four equivalent Al(3) atoms to form AlZr4Al8 cuboctahedra that share corners with four equivalent Al(4)Zr4Al8 cuboctahedra, corners with four equivalent Al(7)Zr4Al8 cuboctahedra, corners with four equivalent Si(1)Zr4Al8 cuboctahedra, edges with four equivalent Zr(2)Al10Si2 cuboctahedra, edges with four equivalent Zr(1)Al12 cuboctahedra, edges with four equivalent Al(6)Zr4Al4Si4 cuboctahedra, edges with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, edges with four equivalent Al(2)Zr4Al8 cuboctahedra, edges with four equivalent Al(5)Zr4Al8 cuboctahedra,  a faceface with one Al(7)Zr4Al8 cuboctahedra,  a faceface with one Si(1)Zr4Al8 cuboctahedra, faces with two equivalent Zr(2)Al10Si2 cuboctahedra, faces with two equivalent Zr(1)Al12 cuboctahedra, faces with two equivalent Al(1)Zr4Al6Si2 cuboctahedra, faces with two equivalent Al(2)Zr4Al8 cuboctahedra, faces with four equivalent Al(3)Zr4Al8 cuboctahedra, and faces with four equivalent Al(4)Zr4Al8 cuboctahedra. In the fifth Al site, Al(5) is bonded to four equivalent Zr(1), four equivalent Al(2), and four equivalent Al(7) atoms to form distorted AlZr4Al8 cuboctahedra that share corners with four equivalent Al(5)Zr4Al8 cuboctahedra, corners with eight equivalent Al(3)Zr4Al8 cuboctahedra, edges with eight equivalent Zr(1)Al12 cuboctahedra, edges with eight equivalent Al(2)Zr4Al8 cuboctahedra, edges with eight equivalent Al(4)Zr4Al8 cuboctahedra, faces with two equivalent Al(3)Zr4Al8 cuboctahedra, faces with four equivalent Zr(1)Al12 cuboctahedra, faces with four equivalent Al(2)Zr4Al8 cuboctahedra, faces with four equivalent Al(5)Zr4Al8 cuboctahedra, and faces with four equivalent Al(7)Zr4Al8 cuboctahedra. In the sixth Al site, Al(6) is bonded to four equivalent Zr(2), four equivalent Al(1), and four equivalent Si(1) atoms to form distorted AlZr4Al4Si4 cuboctahedra that share corners with four equivalent Al(6)Zr4Al4Si4 cuboctahedra, corners with eight equivalent Al(3)Zr4Al8 cuboctahedra, edges with eight equivalent Zr(2)Al10Si2 cuboctahedra, edges with eight equivalent Al(1)Zr4Al6Si2 cuboctahedra, edges with eight equivalent Al(4)Zr4Al8 cuboctahedra, faces with two equivalent Al(3)Zr4Al8 cuboctahedra, faces with four equivalent Zr(2)Al10Si2 cuboctahedra, faces with four equivalent Al(6)Zr4Al4Si4 cuboctahedra, faces with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, and faces with four equivalent Si(1)Zr4Al8 cuboctahedra. In the seventh Al site, Al(7) is bonded to four equivalent Zr(1), four equivalent Al(2), and four equivalent Al(5) atoms to form AlZr4Al8 cuboctahedra that share corners with four equivalent Al(7)Zr4Al8 cuboctahedra, corners with eight equivalent Al(4)Zr4Al8 cuboctahedra, edges with eight equivalent Zr(1)Al12 cuboctahedra, edges with eight equivalent Al(2)Zr4Al8 cuboctahedra, edges with eight equivalent Al(3)Zr4Al8 cuboctahedra, faces with two equivalent Al(4)Zr4Al8 cuboctahedra, faces with four equivalent Zr(1)Al12 cuboctahedra, faces with four equivalent Al(2)Zr4Al8 cuboctahedra, faces with four equivalent Al(5)Zr4Al8 cuboctahedra, and faces with four equivalent Al(7)Zr4Al8 cuboctahedra. Si(1) is bonded to four equivalent Zr(2), four equivalent Al(1), and four equivalent Al(6) atoms to form SiZr4Al8 cuboctahedra that share corners with four equivalent Si(1)Zr4Al8 cuboctahedra, corners with eight equivalent Al(4)Zr4Al8 cuboctahedra, edges with eight equivalent Zr(2)Al10Si2 cuboctahedra, edges with eight equivalent Al(1)Zr4Al6Si2 cuboctahedra, edges with eight equivalent Al(3)Zr4Al8 cuboctahedra, faces with two equivalent Al(4)Zr4Al8 cuboctahedra, faces with four equivalent Zr(2)Al10Si2 cuboctahedra, faces with four equivalent Al(6)Zr4Al4Si4 cuboctahedra, faces with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, and faces with four equivalent Si(1)Zr4Al8 cuboctahedra.
Zr4Al11Si is beta Cu3Ti-derived structured and crystallizes in the orthorhombic Pmmm space group. There are two inequivalent Zr sites. In the first Zr site, Zr(1) is bonded to two equivalent Al(3), two equivalent Al(4), two equivalent Al(5), two equivalent Al(7), and four equivalent Al(2) atoms to form ZrAl12 cuboctahedra that share corners with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, corners with eight equivalent Zr(1)Al12 cuboctahedra, edges with four equivalent Zr(2)Al10Si2 cuboctahedra, edges with four equivalent Al(2)Zr4Al8 cuboctahedra, edges with four equivalent Al(3)Zr4Al8 cuboctahedra, edges with four equivalent Al(4)Zr4Al8 cuboctahedra, edges with four equivalent Al(5)Zr4Al8 cuboctahedra, edges with four equivalent Al(7)Zr4Al8 cuboctahedra,  a faceface with one Al(1)Zr4Al6Si2 cuboctahedra, faces with two equivalent Al(3)Zr4Al8 cuboctahedra, faces with two equivalent Al(4)Zr4Al8 cuboctahedra, faces with two equivalent Al(5)Zr4Al8 cuboctahedra, faces with two equivalent Al(7)Zr4Al8 cuboctahedra, faces with four equivalent Al(2)Zr4Al8 cuboctahedra, and faces with five equivalent Zr(1)Al12 cuboctahedra. Both Zr(1)-Al(3) bond lengths are 3.00 Å. Both Zr(1)-Al(4) bond lengths are 3.01 Å. Both Zr(1)-Al(5) bond lengths are 2.87 Å. Both Zr(1)-Al(7) bond lengths are 2.88 Å. All Zr(1)-Al(2) bond lengths are 2.83 Å. In the second Zr site, Zr(2) is bonded to two equivalent Al(3), two equivalent Al(4), two equivalent Al(6), four equivalent Al(1), and two equivalent Si(1) atoms to form ZrAl10Si2 cuboctahedra that share corners with four equivalent Al(2)Zr4Al8 cuboctahedra, corners with eight equivalent Zr(2)Al10Si2 cuboctahedra, edges with four equivalent Zr(1)Al12 cuboctahedra, edges with four equivalent Al(6)Zr4Al4Si4 cuboctahedra, edges with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, edges with four equivalent Al(3)Zr4Al8 cuboctahedra, edges with four equivalent Al(4)Zr4Al8 cuboctahedra, edges with four equivalent Si(1)Zr4Al8 cuboctahedra,  a faceface with one Al(2)Zr4Al8 cuboctahedra, faces with two equivalent Al(6)Zr4Al4Si4 cuboctahedra, faces with two equivalent Al(3)Zr4Al8 cuboctahedra, faces with two equivalent Al(4)Zr4Al8 cuboctahedra, faces with two equivalent Si(1)Zr4Al8 cuboctahedra, faces with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, and faces with five equivalent Zr(2)Al10Si2 cuboctahedra. Both Zr(2)-Al(3) bond lengths are 3.07 Å. Both Zr(2)-Al(4) bond lengths are 3.06 Å. Both Zr(2)-Al(6) bond lengths are 2.82 Å. All Zr(2)-Al(1) bond lengths are 2.84 Å. Both Zr(2)-Si(1) bond lengths are 2.81 Å. There are seven inequivalent Al sites. In the first Al site, Al(1) is bonded to four equivalent Zr(2), two equivalent Al(3), two equivalent Al(4), two equivalent Al(6), and two equivalent Si(1) atoms to form distorted AlZr4Al6Si2 cuboctahedra that share corners with four equivalent Zr(1)Al12 cuboctahedra, corners with eight equivalent Al(1)Zr4Al6Si2 cuboctahedra, edges with four equivalent Zr(2)Al10Si2 cuboctahedra, edges with four equivalent Al(6)Zr4Al4Si4 cuboctahedra, edges with four equivalent Al(2)Zr4Al8 cuboctahedra, edges with four equivalent Al(3)Zr4Al8 cuboctahedra, edges with four equivalent Al(4)Zr4Al8 cuboctahedra, edges with four equivalent Si(1)Zr4Al8 cuboctahedra,  a faceface with one Zr(1)Al12 cuboctahedra, faces with two equivalent Al(6)Zr4Al4Si4 cuboctahedra, faces with two equivalent Al(3)Zr4Al8 cuboctahedra, faces with two equivalent Al(4)Zr4Al8 cuboctahedra, faces with two equivalent Si(1)Zr4Al8 cuboctahedra, faces with four equivalent Zr(2)Al10Si2 cuboctahedra, and faces with five equivalent Al(1)Zr4Al6Si2 cuboctahedra. Both Al(1)-Al(3) bond lengths are 2.91 Å. Both Al(1)-Al(4) bond lengths are 2.93 Å. Both Al(1)-Al(6) bond lengths are 2.95 Å. Both Al(1)-Si(1) bond lengths are 2.96 Å. In the second Al site, Al(2) is bonded to four equivalent Zr(1), two equivalent Al(3), two equivalent Al(4), two equivalent Al(5), and two equivalent Al(7) atoms to form distorted AlZr4Al8 cuboctahedra that share corners with four equivalent Zr(2)Al10Si2 cuboctahedra, corners with eight equivalent Al(2)Zr4Al8 cuboctahedra, edges with four equivalent Zr(1)Al12 cuboctahedra, edges with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, edges with four equivalent Al(3)Zr4Al8 cuboctahedra, edges with four equivalent Al(4)Zr4Al8 cuboctahedra, edges with four equivalent Al(5)Zr4Al8 cuboctahedra, edges with four equivalent Al(7)Zr4Al8 cuboctahedra,  a faceface with one Zr(2)Al10Si2 cuboctahedra, faces with two equivalent Al(3)Zr4Al8 cuboctahedra, faces with two equivalent Al(4)Zr4Al8 cuboctahedra, faces with two equivalent Al(5)Zr4Al8 cuboctahedra, faces with two equivalent Al(7)Zr4Al8 cuboctahedra, faces with four equivalent Zr(1)Al12 cuboctahedra, and faces with five equivalent Al(2)Zr4Al8 cuboctahedra. Both Al(2)-Al(3) bond lengths are 2.95 Å. Both Al(2)-Al(4) bond lengths are 2.94 Å. Both Al(2)-Al(5) bond lengths are 2.94 Å. Both Al(2)-Al(7) bond lengths are 2.93 Å. In the third Al site, Al(3) is bonded to two equivalent Zr(1), two equivalent Zr(2), two equivalent Al(1), two equivalent Al(2), and four equivalent Al(4) atoms to form AlZr4Al8 cuboctahedra that share corners with four equivalent Al(6)Zr4Al4Si4 cuboctahedra, corners with four equivalent Al(3)Zr4Al8 cuboctahedra, corners with four equivalent Al(5)Zr4Al8 cuboctahedra, edges with four equivalent Zr(2)Al10Si2 cuboctahedra, edges with four equivalent Zr(1)Al12 cuboctahedra, edges with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, edges with four equivalent Al(2)Zr4Al8 cuboctahedra, edges with four equivalent Al(7)Zr4Al8 cuboctahedra, edges with four equivalent Si(1)Zr4Al8 cuboctahedra,  a faceface with one Al(6)Zr4Al4Si4 cuboctahedra,  a faceface with one Al(5)Zr4Al8 cuboctahedra, faces with two equivalent Zr(2)Al10Si2 cuboctahedra, faces with two equivalent Zr(1)Al12 cuboctahedra, faces with two equivalent Al(1)Zr4Al6Si2 cuboctahedra, faces with two equivalent Al(2)Zr4Al8 cuboctahedra, faces with four equivalent Al(3)Zr4Al8 cuboctahedra, and faces with four equivalent Al(4)Zr4Al8 cuboctahedra. All Al(3)-Al(4) bond lengths are 2.83 Å. In the fourth Al site, Al(4) is bonded to two equivalent Zr(1), two equivalent Zr(2), two equivalent Al(1), two equivalent Al(2), and four equivalent Al(3) atoms to form AlZr4Al8 cuboctahedra that share corners with four equivalent Al(4)Zr4Al8 cuboctahedra, corners with four equivalent Al(7)Zr4Al8 cuboctahedra, corners with four equivalent Si(1)Zr4Al8 cuboctahedra, edges with four equivalent Zr(2)Al10Si2 cuboctahedra, edges with four equivalent Zr(1)Al12 cuboctahedra, edges with four equivalent Al(6)Zr4Al4Si4 cuboctahedra, edges with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, edges with four equivalent Al(2)Zr4Al8 cuboctahedra, edges with four equivalent Al(5)Zr4Al8 cuboctahedra,  a faceface with one Al(7)Zr4Al8 cuboctahedra,  a faceface with one Si(1)Zr4Al8 cuboctahedra, faces with two equivalent Zr(2)Al10Si2 cuboctahedra, faces with two equivalent Zr(1)Al12 cuboctahedra, faces with two equivalent Al(1)Zr4Al6Si2 cuboctahedra, faces with two equivalent Al(2)Zr4Al8 cuboctahedra, faces with four equivalent Al(3)Zr4Al8 cuboctahedra, and faces with four equivalent Al(4)Zr4Al8 cuboctahedra. In the fifth Al site, Al(5) is bonded to four equivalent Zr(1), four equivalent Al(2), and four equivalent Al(7) atoms to form distorted AlZr4Al8 cuboctahedra that share corners with four equivalent Al(5)Zr4Al8 cuboctahedra, corners with eight equivalent Al(3)Zr4Al8 cuboctahedra, edges with eight equivalent Zr(1)Al12 cuboctahedra, edges with eight equivalent Al(2)Zr4Al8 cuboctahedra, edges with eight equivalent Al(4)Zr4Al8 cuboctahedra, faces with two equivalent Al(3)Zr4Al8 cuboctahedra, faces with four equivalent Zr(1)Al12 cuboctahedra, faces with four equivalent Al(2)Zr4Al8 cuboctahedra, faces with four equivalent Al(5)Zr4Al8 cuboctahedra, and faces with four equivalent Al(7)Zr4Al8 cuboctahedra. All Al(5)-Al(7) bond lengths are 2.83 Å. In the sixth Al site, Al(6) is bonded to four equivalent Zr(2), four equivalent Al(1), and four equivalent Si(1) atoms to form distorted AlZr4Al4Si4 cuboctahedra that share corners with four equivalent Al(6)Zr4Al4Si4 cuboctahedra, corners with eight equivalent Al(3)Zr4Al8 cuboctahedra, edges with eight equivalent Zr(2)Al10Si2 cuboctahedra, edges with eight equivalent Al(1)Zr4Al6Si2 cuboctahedra, edges with eight equivalent Al(4)Zr4Al8 cuboctahedra, faces with two equivalent Al(3)Zr4Al8 cuboctahedra, faces with four equivalent Zr(2)Al10Si2 cuboctahedra, faces with four equivalent Al(6)Zr4Al4Si4 cuboctahedra, faces with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, and faces with four equivalent Si(1)Zr4Al8 cuboctahedra. All Al(6)-Si(1) bond lengths are 2.83 Å. In the seventh Al site, Al(7) is bonded to four equivalent Zr(1), four equivalent Al(2), and four equivalent Al(5) atoms to form AlZr4Al8 cuboctahedra that share corners with four equivalent Al(7)Zr4Al8 cuboctahedra, corners with eight equivalent Al(4)Zr4Al8 cuboctahedra, edges with eight equivalent Zr(1)Al12 cuboctahedra, edges with eight equivalent Al(2)Zr4Al8 cuboctahedra, edges with eight equivalent Al(3)Zr4Al8 cuboctahedra, faces with two equivalent Al(4)Zr4Al8 cuboctahedra, faces with four equivalent Zr(1)Al12 cuboctahedra, faces with four equivalent Al(2)Zr4Al8 cuboctahedra, faces with four equivalent Al(5)Zr4Al8 cuboctahedra, and faces with four equivalent Al(7)Zr4Al8 cuboctahedra. Si(1) is bonded to four equivalent Zr(2), four equivalent Al(1), and four equivalent Al(6) atoms to form SiZr4Al8 cuboctahedra that share corners with four equivalent Si(1)Zr4Al8 cuboctahedra, corners with eight equivalent Al(4)Zr4Al8 cuboctahedra, edges with eight equivalent Zr(2)Al10Si2 cuboctahedra, edges with eight equivalent Al(1)Zr4Al6Si2 cuboctahedra, edges with eight equivalent Al(3)Zr4Al8 cuboctahedra, faces with two equivalent Al(4)Zr4Al8 cuboctahedra, faces with four equivalent Zr(2)Al10Si2 cuboctahedra, faces with four equivalent Al(6)Zr4Al4Si4 cuboctahedra, faces with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, and faces with four equivalent Si(1)Zr4Al8 cuboctahedra.