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 two equivalent Bi(6) atoms. In the second Ba site, Ba(2) is bonded to one Cd(2), one Bi(5), one Bi(7), two equivalent Bi(2), and two equivalent Bi(4) atoms to form distorted BaCdBi6 octahedra that share corners with two equivalent Ba(6)Bi6 octahedra,  a cornercorner with one Cd(3)Ba4Bi4 tetrahedra, edges with two equivalent Ba(2)CdBi6 octahedra, and  a faceface with one Ba(6)Bi6 octahedra. The corner-sharing octahedral tilt angles are 51°. 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 12-coordinate geometry to one Cd(4), two equivalent Cd(2), two equivalent Cd(3), one Bi(4), two equivalent Bi(7), and four equivalent Bi(1) atoms. In the sixth Ba site, Ba(6) is bonded to two equivalent Bi(7) and four equivalent Bi(2) atoms to form distorted BaBi6 octahedra that share corners with four equivalent Ba(2)CdBi6 octahedra, corners with two equivalent Cd(3)Ba4Bi4 tetrahedra, edges with two equivalent Ba(6)Bi6 octahedra, and faces with two equivalent Ba(2)CdBi6 octahedra. The corner-sharing octahedral tilt angles are 51°. 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 9-coordinate geometry to one Ba(2), two equivalent Ba(3), two equivalent Ba(5), one Bi(1), one Bi(6), and two equivalent Bi(4) atoms. In the third Cd site, Cd(3) is bonded to two equivalent Ba(3), two equivalent Ba(5), one Bi(1), one Bi(7), and two equivalent Bi(3) atoms to form distorted CdBa4Bi4 tetrahedra that share  a cornercorner with one Ba(6)Bi6 octahedra,  a cornercorner with one Ba(2)CdBi6 octahedra, corners with two equivalent Bi(7)Ba4Cd3 pentagonal bipyramids,  an edgeedge with one Bi(7)Ba4Cd3 pentagonal bipyramid, and faces with two equivalent Cd(3)Ba4Bi4 tetrahedra. The corner-sharing octahedral tilt angles range from 23-49°. In the fourth Cd site, Cd(4) is bonded in a 4-coordinate geometry to one Ba(5), two equivalent Ba(4), 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 7-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 8-coordinate geometry to two 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 to one Ba(2), one Ba(6), two equivalent Ba(5), one Cd(3), and two equivalent Cd(4) atoms to form distorted BiBa4Cd3 pentagonal bipyramids that share  a cornercorner with one Bi(7)Ba4Cd3 pentagonal bipyramid, corners with two equivalent Cd(3)Ba4Bi4 tetrahedra, edges with two equivalent Bi(7)Ba4Cd3 pentagonal bipyramids, and  an edgeedge with one Cd(3)Ba4Bi4 tetrahedra.
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 two equivalent Bi(6) atoms. The Ba(1)-Bi(4) bond length is 3.54 Å. Both Ba(1)-Bi(3) bond lengths are 3.77 Å. Both Ba(1)-Bi(5) bond lengths are 3.94 Å. Both Ba(1)-Bi(6) bond lengths are 3.86 Å. In the second Ba site, Ba(2) is bonded to one Cd(2), one Bi(5), one Bi(7), two equivalent Bi(2), and two equivalent Bi(4) atoms to form distorted BaCdBi6 octahedra that share corners with two equivalent Ba(6)Bi6 octahedra,  a cornercorner with one Cd(3)Ba4Bi4 tetrahedra, edges with two equivalent Ba(2)CdBi6 octahedra, and  a faceface with one Ba(6)Bi6 octahedra. The corner-sharing octahedral tilt angles are 51°. The Ba(2)-Cd(2) bond length is 3.93 Å. The Ba(2)-Bi(5) bond length is 3.69 Å. The Ba(2)-Bi(7) bond length is 3.80 Å. Both Ba(2)-Bi(2) bond lengths are 3.62 Å. Both Ba(2)-Bi(4) bond lengths are 3.54 Å. 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. Both Ba(3)-Cd(2) bond lengths are 3.57 Å. There is one shorter (3.89 Å) and one longer (3.90 Å) Ba(3)-Cd(3) bond length. The Ba(3)-Bi(3) bond length is 3.49 Å. The Ba(3)-Bi(4) bond length is 3.93 Å. Both Ba(3)-Bi(1) bond lengths are 3.54 Å. There is one shorter (3.68 Å) and two longer (3.72 Å) Ba(3)-Bi(6) bond lengths. 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. Both Ba(4)-Cd(1) bond lengths are 3.66 Å. Both Ba(4)-Cd(4) bond lengths are 3.82 Å. Both Ba(4)-Bi(2) bond lengths are 3.61 Å. Both Ba(4)-Bi(3) bond lengths are 3.71 Å. There is one shorter (3.90 Å) and one longer (3.91 Å) Ba(4)-Bi(5) bond length. In the fifth Ba site, Ba(5) is bonded in a 12-coordinate geometry to one Cd(4), two equivalent Cd(2), two equivalent Cd(3), one Bi(4), two equivalent Bi(7), and four equivalent Bi(1) atoms. The Ba(5)-Cd(4) bond length is 4.08 Å. Both Ba(5)-Cd(2) bond lengths are 4.09 Å. Both Ba(5)-Cd(3) bond lengths are 4.01 Å. The Ba(5)-Bi(4) bond length is 3.78 Å. Both Ba(5)-Bi(7) bond lengths are 3.70 Å. There are two shorter (3.71 Å) and two longer (3.88 Å) Ba(5)-Bi(1) bond lengths. In the sixth Ba site, Ba(6) is bonded to two equivalent Bi(7) and four equivalent Bi(2) atoms to form distorted BaBi6 octahedra that share corners with four equivalent Ba(2)CdBi6 octahedra, corners with two equivalent Cd(3)Ba4Bi4 tetrahedra, edges with two equivalent Ba(6)Bi6 octahedra, and faces with two equivalent Ba(2)CdBi6 octahedra. The corner-sharing octahedral tilt angles are 51°. Both Ba(6)-Bi(7) bond lengths are 3.60 Å. All Ba(6)-Bi(2) bond lengths are 3.69 Å. 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 3.14 Å. There are two shorter (3.01 Å) and one longer (3.16 Å) Cd(1)-Bi(5) bond length. In the second Cd site, Cd(2) is bonded in a 9-coordinate geometry to one Ba(2), two equivalent Ba(3), two equivalent Ba(5), one Bi(1), one Bi(6), and two equivalent Bi(4) atoms. The Cd(2)-Bi(1) bond length is 2.93 Å. The Cd(2)-Bi(6) bond length is 3.23 Å. Both Cd(2)-Bi(4) bond lengths are 2.90 Å. In the third Cd site, Cd(3) is bonded to two equivalent Ba(3), two equivalent Ba(5), one Bi(1), one Bi(7), and two equivalent Bi(3) atoms to form distorted CdBa4Bi4 tetrahedra that share  a cornercorner with one Ba(6)Bi6 octahedra,  a cornercorner with one Ba(2)CdBi6 octahedra, corners with two equivalent Bi(7)Ba4Cd3 pentagonal bipyramids,  an edgeedge with one Bi(7)Ba4Cd3 pentagonal bipyramid, and faces with two equivalent Cd(3)Ba4Bi4 tetrahedra. The corner-sharing octahedral tilt angles range from 23-49°. The Cd(3)-Bi(1) bond length is 2.99 Å. The Cd(3)-Bi(7) bond length is 3.05 Å. There is one shorter (3.05 Å) and one longer (3.06 Å) Cd(3)-Bi(3) bond length. In the fourth Cd site, Cd(4) is bonded in a 4-coordinate geometry to one Ba(5), two equivalent Ba(4), one Bi(2), one Bi(3), and two equivalent Bi(7) atoms. The Cd(4)-Bi(2) bond length is 3.06 Å. The Cd(4)-Bi(3) bond length is 3.12 Å. There is one shorter (3.00 Å) and one longer (3.01 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 3.45 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 7-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 8-coordinate geometry to two equivalent Ba(1), three equivalent Ba(3), one Cd(2), and two equivalent Bi(6) atoms. Both Bi(6)-Bi(6) bond lengths are 3.15 Å. In the seventh Bi site, Bi(7) is bonded to one Ba(2), one Ba(6), two equivalent Ba(5), one Cd(3), and two equivalent Cd(4) atoms to form distorted BiBa4Cd3 pentagonal bipyramids that share  a cornercorner with one Bi(7)Ba4Cd3 pentagonal bipyramid, corners with two equivalent Cd(3)Ba4Bi4 tetrahedra, edges with two equivalent Bi(7)Ba4Cd3 pentagonal bipyramids, and  an edgeedge with one Cd(3)Ba4Bi4 tetrahedra.