Ba11(Cd4Bi7)2 is Magnesium tetraboride-derived structured and crystallizes in the triclinic P-1 space group. There are six inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 7-coordinate geometry to one Bi(4), two equivalent Bi(3), two equivalent Bi(5), and three equivalent Bi(6) atoms. In the second Ba site, Ba(2) is bonded to one Bi(5), one Bi(7), two equivalent Bi(2), and two equivalent Bi(4) atoms to form distorted BaBi6 octahedra that share corners with two equivalent Ba(6)Cd4Bi6 octahedra, edges with two equivalent Ba(2)Bi6 octahedra, and  a faceface with one Ba(6)Cd4Bi6 octahedra. The corner-sharing octahedral tilt angles are 50°. In the third Ba site, Ba(3) is bonded in a 11-coordinate geometry to two equivalent Cd(2), two equivalent Cd(3), one Bi(3), one Bi(4), two equivalent Bi(1), and three equivalent Bi(6) atoms. In the fourth Ba site, Ba(4) is bonded in a 10-coordinate geometry to two equivalent Cd(1), two equivalent Cd(4), two equivalent Bi(2), two equivalent Bi(3), and two equivalent Bi(5) atoms. In the fifth Ba site, Ba(5) is bonded in a 7-coordinate geometry to one Cd(4), one Bi(4), two equivalent Bi(7), and four equivalent Bi(1) atoms. In the sixth Ba site, Ba(6) is bonded to four equivalent Cd(4), two equivalent Bi(7), and four equivalent Bi(2) atoms to form distorted BaCd4Bi6 octahedra that share corners with four equivalent Ba(2)Bi6 octahedra, faces with two equivalent Ba(2)Bi6 octahedra, and faces with two equivalent Ba(6)Cd4Bi6 octahedra. The corner-sharing octahedral tilt angles are 50°. There are four inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a 6-coordinate geometry to two equivalent Ba(4), one Bi(2), and three equivalent Bi(5) atoms. In the second Cd site, Cd(2) is bonded in a 6-coordinate geometry to two equivalent Ba(3), one Bi(1), one Bi(6), and two equivalent Bi(4) atoms. In the third Cd site, Cd(3) is bonded in a 4-coordinate geometry to two equivalent Ba(3), one Bi(1), one Bi(7), and two equivalent Bi(3) atoms. In the fourth Cd site, Cd(4) is bonded in a 9-coordinate geometry to one Ba(5), two equivalent Ba(4), two equivalent Ba(6), one Bi(2), one Bi(3), and two equivalent Bi(7) atoms. There are seven inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 9-coordinate geometry to two equivalent Ba(3), four equivalent Ba(5), one Cd(2), one Cd(3), and one Bi(1) atom. In the second Bi site, Bi(2) is bonded in a 8-coordinate geometry to two equivalent Ba(2), two equivalent Ba(4), two equivalent Ba(6), one Cd(1), and one Cd(4) atom. In the third Bi site, Bi(3) is bonded in a 8-coordinate geometry to one Ba(3), two equivalent Ba(1), two equivalent Ba(4), one Cd(4), and two equivalent Cd(3) atoms. In the fourth Bi site, Bi(4) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(3), one Ba(5), two equivalent Ba(2), and two equivalent Cd(2) atoms. In the fifth Bi site, Bi(5) is bonded in a 8-coordinate geometry to one Ba(2), two equivalent Ba(1), two equivalent Ba(4), and three equivalent Cd(1) atoms. In the sixth Bi site, Bi(6) is bonded in a 9-coordinate geometry to three equivalent Ba(1), three equivalent Ba(3), one Cd(2), and two equivalent Bi(6) atoms. In the seventh Bi site, Bi(7) is bonded in a 7-coordinate geometry to one Ba(2), one Ba(6), two equivalent Ba(5), one Cd(3), and two equivalent Cd(4) atoms.
Ba11(Cd4Bi7)2 is Magnesium tetraboride-derived structured and crystallizes in the triclinic P-1 space group. There are six inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 7-coordinate geometry to one Bi(4), two equivalent Bi(3), two equivalent Bi(5), and three equivalent Bi(6) atoms. The Ba(1)-Bi(4) bond length is 3.54 Å. There is one shorter (3.83 Å) and one longer (3.84 Å) Ba(1)-Bi(3) bond length. There is one shorter (3.97 Å) and one longer (3.99 Å) Ba(1)-Bi(5) bond length. There are a spread of Ba(1)-Bi(6) bond distances ranging from 3.85-4.20 Å. In the second Ba site, Ba(2) is bonded to one Bi(5), one Bi(7), two equivalent Bi(2), and two equivalent Bi(4) atoms to form distorted BaBi6 octahedra that share corners with two equivalent Ba(6)Cd4Bi6 octahedra, edges with two equivalent Ba(2)Bi6 octahedra, and  a faceface with one Ba(6)Cd4Bi6 octahedra. The corner-sharing octahedral tilt angles are 50°. The Ba(2)-Bi(5) bond length is 3.69 Å. The Ba(2)-Bi(7) bond length is 3.79 Å. There is one shorter (3.61 Å) and one longer (3.64 Å) Ba(2)-Bi(2) bond length. There is one shorter (3.50 Å) and one longer (3.51 Å) Ba(2)-Bi(4) bond length. In the third Ba site, Ba(3) is bonded in a 11-coordinate geometry to two equivalent Cd(2), two equivalent Cd(3), one Bi(3), one Bi(4), two equivalent Bi(1), and three equivalent Bi(6) atoms. There is one shorter (3.57 Å) and one longer (3.58 Å) Ba(3)-Cd(2) bond length. There is one shorter (3.90 Å) and one longer (3.92 Å) Ba(3)-Cd(3) bond length. The Ba(3)-Bi(3) bond length is 3.51 Å. The Ba(3)-Bi(4) bond length is 4.03 Å. Both Ba(3)-Bi(1) bond lengths are 3.56 Å. There are a spread of Ba(3)-Bi(6) bond distances ranging from 3.64-3.74 Å. In the fourth Ba site, Ba(4) is bonded in a 10-coordinate geometry to two equivalent Cd(1), two equivalent Cd(4), two equivalent Bi(2), two equivalent Bi(3), and two equivalent Bi(5) atoms. There is one shorter (3.70 Å) and one longer (3.73 Å) Ba(4)-Cd(1) bond length. There is one shorter (3.80 Å) and one longer (3.82 Å) Ba(4)-Cd(4) bond length. There is one shorter (3.64 Å) and one longer (3.66 Å) Ba(4)-Bi(2) bond length. There is one shorter (3.73 Å) and one longer (3.77 Å) Ba(4)-Bi(3) bond length. There is one shorter (3.87 Å) and one longer (3.92 Å) Ba(4)-Bi(5) bond length. In the fifth Ba site, Ba(5) is bonded in a 7-coordinate geometry to one Cd(4), one Bi(4), two equivalent Bi(7), and four equivalent Bi(1) atoms. The Ba(5)-Cd(4) bond length is 4.05 Å. The Ba(5)-Bi(4) bond length is 3.69 Å. There is one shorter (3.69 Å) and one longer (3.73 Å) Ba(5)-Bi(7) bond length. There are a spread of Ba(5)-Bi(1) bond distances ranging from 3.75-3.88 Å. In the sixth Ba site, Ba(6) is bonded to four equivalent Cd(4), two equivalent Bi(7), and four equivalent Bi(2) atoms to form distorted BaCd4Bi6 octahedra that share corners with four equivalent Ba(2)Bi6 octahedra, faces with two equivalent Ba(2)Bi6 octahedra, and faces with two equivalent Ba(6)Cd4Bi6 octahedra. The corner-sharing octahedral tilt angles are 50°. There are two shorter (4.12 Å) and two longer (4.14 Å) Ba(6)-Cd(4) bond lengths. Both Ba(6)-Bi(7) bond lengths are 3.62 Å. There are two shorter (3.68 Å) and two longer (3.69 Å) Ba(6)-Bi(2) bond lengths. There are four inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a 6-coordinate geometry to two equivalent Ba(4), one Bi(2), and three equivalent Bi(5) atoms. The Cd(1)-Bi(2) bond length is 3.13 Å. There are a spread of Cd(1)-Bi(5) bond distances ranging from 3.05-3.20 Å. In the second Cd site, Cd(2) is bonded in a 6-coordinate geometry to two equivalent Ba(3), one Bi(1), one Bi(6), and two equivalent Bi(4) atoms. The Cd(2)-Bi(1) bond length is 3.04 Å. The Cd(2)-Bi(6) bond length is 3.15 Å. There is one shorter (2.92 Å) and one longer (2.93 Å) Cd(2)-Bi(4) bond length. In the third Cd site, Cd(3) is bonded in a 4-coordinate geometry to two equivalent Ba(3), one Bi(1), one Bi(7), and two equivalent Bi(3) atoms. The Cd(3)-Bi(1) bond length is 3.04 Å. The Cd(3)-Bi(7) bond length is 3.08 Å. There is one shorter (3.09 Å) and one longer (3.10 Å) Cd(3)-Bi(3) bond length. In the fourth Cd site, Cd(4) is bonded in a 9-coordinate geometry to one Ba(5), two equivalent Ba(4), two equivalent Ba(6), one Bi(2), one Bi(3), and two equivalent Bi(7) atoms. The Cd(4)-Bi(2) bond length is 3.07 Å. The Cd(4)-Bi(3) bond length is 3.14 Å. There is one shorter (3.02 Å) and one longer (3.03 Å) Cd(4)-Bi(7) bond length. There are seven inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 9-coordinate geometry to two equivalent Ba(3), four equivalent Ba(5), one Cd(2), one Cd(3), and one Bi(1) atom. The Bi(1)-Bi(1) bond length is 3.34 Å. In the second Bi site, Bi(2) is bonded in a 8-coordinate geometry to two equivalent Ba(2), two equivalent Ba(4), two equivalent Ba(6), one Cd(1), and one Cd(4) atom. In the third Bi site, Bi(3) is bonded in a 8-coordinate geometry to one Ba(3), two equivalent Ba(1), two equivalent Ba(4), one Cd(4), and two equivalent Cd(3) atoms. In the fourth Bi site, Bi(4) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(3), one Ba(5), two equivalent Ba(2), and two equivalent Cd(2) atoms. In the fifth Bi site, Bi(5) is bonded in a 8-coordinate geometry to one Ba(2), two equivalent Ba(1), two equivalent Ba(4), and three equivalent Cd(1) atoms. In the sixth Bi site, Bi(6) is bonded in a 9-coordinate geometry to three equivalent Ba(1), three equivalent Ba(3), one Cd(2), and two equivalent Bi(6) atoms. Both Bi(6)-Bi(6) bond lengths are 3.09 Å. In the seventh Bi site, Bi(7) is bonded in a 7-coordinate geometry to one Ba(2), one Ba(6), two equivalent Ba(5), one Cd(3), and two equivalent Cd(4) atoms.