Rb5Cd2Tl11 crystallizes in the orthorhombic Amm2 space group. There are three inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 8-coordinate geometry to one Tl(3), one Tl(6), two equivalent Tl(1), two equivalent Tl(2), and two equivalent Tl(4) atoms. In the second Rb site, Rb(2) is bonded in a 8-coordinate geometry to one Tl(1), one Tl(7), two equivalent Tl(2), two equivalent Tl(4), and two equivalent Tl(6) atoms. In the third Rb site, Rb(3) is bonded in a 6-coordinate geometry to two equivalent Tl(5), two equivalent Tl(6), and two equivalent Tl(7) atoms. Cd(1) is bonded to two equivalent Cd(1), one Tl(3), one Tl(7), two equivalent Tl(1), two equivalent Tl(2), two equivalent Tl(4), and two equivalent Tl(6) atoms to form a mixture of corner and face-sharing CdTl10Cd2 cuboctahedra. There are seven inequivalent Tl sites. In the first Tl site, Tl(1) is bonded in a 11-coordinate geometry to one Rb(2), two equivalent Rb(1), two equivalent Cd(1), one Tl(2), one Tl(5), two equivalent Tl(3), and two equivalent Tl(4) atoms. In the second Tl site, Tl(2) is bonded in a 12-coordinate geometry to two equivalent Rb(1), two equivalent Rb(2), two equivalent Cd(1), one Tl(1), one Tl(7), two equivalent Tl(4), and two equivalent Tl(6) atoms. In the third Tl site, Tl(3) is bonded in a 12-coordinate geometry to two equivalent Rb(1), two equivalent Cd(1), two equivalent Tl(4), two equivalent Tl(5), and four equivalent Tl(1) atoms. In the fourth Tl site, Tl(4) is bonded in a 12-coordinate geometry to two equivalent Rb(1), two equivalent Rb(2), two equivalent Cd(1), one Tl(3), one Tl(6), two equivalent Tl(1), and two equivalent Tl(2) atoms. In the fifth Tl site, Tl(5) is bonded in a 6-coordinate geometry to two equivalent Rb(3), two equivalent Tl(1), and two equivalent Tl(3) atoms. In the sixth Tl site, Tl(6) is bonded in a 12-coordinate geometry to one Rb(1), one Rb(3), two equivalent Rb(2), two equivalent Cd(1), one Tl(4), one Tl(6), two equivalent Tl(2), and two equivalent Tl(7) atoms. In the seventh Tl site, Tl(7) is bonded in a 12-coordinate geometry to two equivalent Rb(2), two equivalent Rb(3), two equivalent Cd(1), two equivalent Tl(2), and four equivalent Tl(6) atoms.
Rb5Cd2Tl11 crystallizes in the orthorhombic Amm2 space group. There are three inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 8-coordinate geometry to one Tl(3), one Tl(6), two equivalent Tl(1), two equivalent Tl(2), and two equivalent Tl(4) atoms. The Rb(1)-Tl(3) bond length is 3.83 Å. The Rb(1)-Tl(6) bond length is 3.76 Å. Both Rb(1)-Tl(1) bond lengths are 3.93 Å. Both Rb(1)-Tl(2) bond lengths are 4.01 Å. There is one shorter (3.76 Å) and one longer (3.89 Å) Rb(1)-Tl(4) bond length. In the second Rb site, Rb(2) is bonded in a 8-coordinate geometry to one Tl(1), one Tl(7), two equivalent Tl(2), two equivalent Tl(4), and two equivalent Tl(6) atoms. The Rb(2)-Tl(1) bond length is 3.75 Å. The Rb(2)-Tl(7) bond length is 3.81 Å. There is one shorter (3.85 Å) and one longer (3.87 Å) Rb(2)-Tl(2) bond length. Both Rb(2)-Tl(4) bond lengths are 4.00 Å. Both Rb(2)-Tl(6) bond lengths are 4.05 Å. In the third Rb site, Rb(3) is bonded in a 6-coordinate geometry to two equivalent Tl(5), two equivalent Tl(6), and two equivalent Tl(7) atoms. Both Rb(3)-Tl(5) bond lengths are 3.78 Å. Both Rb(3)-Tl(6) bond lengths are 3.76 Å. Both Rb(3)-Tl(7) bond lengths are 3.86 Å. Cd(1) is bonded to two equivalent Cd(1), one Tl(3), one Tl(7), two equivalent Tl(1), two equivalent Tl(2), two equivalent Tl(4), and two equivalent Tl(6) atoms to form a mixture of corner and face-sharing CdTl10Cd2 cuboctahedra. There is one shorter (2.81 Å) and one longer (2.82 Å) Cd(1)-Cd(1) bond length. The Cd(1)-Tl(3) bond length is 3.27 Å. The Cd(1)-Tl(7) bond length is 3.33 Å. Both Cd(1)-Tl(1) bond lengths are 3.34 Å. Both Cd(1)-Tl(2) bond lengths are 3.30 Å. Both Cd(1)-Tl(4) bond lengths are 3.32 Å. Both Cd(1)-Tl(6) bond lengths are 3.25 Å. There are seven inequivalent Tl sites. In the first Tl site, Tl(1) is bonded in a 11-coordinate geometry to one Rb(2), two equivalent Rb(1), two equivalent Cd(1), one Tl(2), one Tl(5), two equivalent Tl(3), and two equivalent Tl(4) atoms. The Tl(1)-Tl(2) bond length is 3.48 Å. The Tl(1)-Tl(5) bond length is 3.15 Å. Both Tl(1)-Tl(3) bond lengths are 3.41 Å. Both Tl(1)-Tl(4) bond lengths are 3.35 Å. In the second Tl site, Tl(2) is bonded in a 12-coordinate geometry to two equivalent Rb(1), two equivalent Rb(2), two equivalent Cd(1), one Tl(1), one Tl(7), two equivalent Tl(4), and two equivalent Tl(6) atoms. The Tl(2)-Tl(7) bond length is 3.53 Å. Both Tl(2)-Tl(4) bond lengths are 3.36 Å. Both Tl(2)-Tl(6) bond lengths are 3.32 Å. In the third Tl site, Tl(3) is bonded in a 12-coordinate geometry to two equivalent Rb(1), two equivalent Cd(1), two equivalent Tl(4), two equivalent Tl(5), and four equivalent Tl(1) atoms. Both Tl(3)-Tl(4) bond lengths are 3.51 Å. Both Tl(3)-Tl(5) bond lengths are 3.46 Å. In the fourth Tl site, Tl(4) is bonded in a 12-coordinate geometry to two equivalent Rb(1), two equivalent Rb(2), two equivalent Cd(1), one Tl(3), one Tl(6), two equivalent Tl(1), and two equivalent Tl(2) atoms. The Tl(4)-Tl(6) bond length is 3.43 Å. In the fifth Tl site, Tl(5) is bonded in a 6-coordinate geometry to two equivalent Rb(3), two equivalent Tl(1), and two equivalent Tl(3) atoms. In the sixth Tl site, Tl(6) is bonded in a 12-coordinate geometry to one Rb(1), one Rb(3), two equivalent Rb(2), two equivalent Cd(1), one Tl(4), one Tl(6), two equivalent Tl(2), and two equivalent Tl(7) atoms. The Tl(6)-Tl(6) bond length is 3.53 Å. Both Tl(6)-Tl(7) bond lengths are 3.39 Å. In the seventh Tl site, Tl(7) is bonded in a 12-coordinate geometry to two equivalent Rb(2), two equivalent Rb(3), two equivalent Cd(1), two equivalent Tl(2), and four equivalent Tl(6) atoms.