Sm3(Bi7Te12)2 crystallizes in the triclinic P1 space group. There are three inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 8-coordinate geometry to one Te(1), one Te(18), one Te(19), one Te(2), one Te(20), one Te(24), one Te(3), and one Te(9) atom. In the second Sm site, Sm(2) is bonded in a 8-coordinate geometry to one Te(1), one Te(10), one Te(17), one Te(2), one Te(3), one Te(5), one Te(7), and one Te(9) atom. In the third Sm site, Sm(3) is bonded in a 8-coordinate geometry to one Te(13), one Te(18), one Te(19), one Te(20), one Te(22), one Te(24), one Te(3), and one Te(8) atom. There are fourteen inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one Te(15), one Te(16), one Te(17), one Te(4), one Te(5), and one Te(6) atom to form a mixture of distorted face and corner-sharing BiTe6 pentagonal pyramids. In the second Bi site, Bi(2) is bonded to one Te(1), one Te(10), one Te(2), one Te(20), one Te(5), and one Te(9) atom to form a mixture of distorted corner and edge-sharing BiTe6 pentagonal pyramids. In the third Bi site, Bi(3) is bonded in a 8-coordinate geometry to one Te(11), one Te(12), one Te(13), one Te(14), one Te(21), one Te(22), one Te(23), and one Te(8) atom. In the fourth Bi site, Bi(4) is bonded in a 7-coordinate geometry to one Te(10), one Te(15), one Te(17), one Te(2), one Te(5), one Te(7), and one Te(9) atom. In the fifth Bi site, Bi(5) is bonded in a 5-coordinate geometry to one Te(11), one Te(12), one Te(16), one Te(4), one Te(6), and one Te(7) atom. In the sixth Bi site, Bi(6) is bonded to one Te(1), one Te(15), one Te(16), one Te(17), one Te(5), and one Te(7) atom to form a mixture of distorted face, corner, and edge-sharing BiTe6 pentagonal pyramids. In the seventh Bi site, Bi(7) is bonded in a 8-coordinate geometry to one Te(1), one Te(10), one Te(19), one Te(2), one Te(20), one Te(24), one Te(3), and one Te(9) atom. In the eighth Bi site, Bi(8) is bonded in a distorted pentagonal pyramidal geometry to one Te(13), one Te(18), one Te(21), one Te(22), one Te(24), and one Te(8) atom. In the ninth Bi site, Bi(9) is bonded in a 6-coordinate geometry to one Te(11), one Te(12), one Te(14), one Te(16), one Te(21), and one Te(6) atom. In the tenth Bi site, Bi(10) is bonded in a 4-coordinate geometry to one Te(14), one Te(18), one Te(21), one Te(22), and one Te(23) atom. In the eleventh Bi site, Bi(11) is bonded in a 5-coordinate geometry to one Te(12), one Te(14), one Te(21), one Te(23), and one Te(4) atom. In the twelfth Bi site, Bi(12) is bonded in a 5-coordinate geometry to one Te(11), one Te(17), one Te(4), one Te(5), and one Te(6) atom. In the thirteenth Bi site, Bi(13) is bonded in a 5-coordinate geometry to one Te(18), one Te(19), one Te(20), one Te(3), and one Te(8) atom. In the fourteenth Bi site, Bi(14) is bonded in a 5-coordinate geometry to one Te(12), one Te(14), one Te(18), one Te(21), one Te(23), and one Te(8) atom. There are twenty-four inequivalent Te sites. In the first Te site, Te(1) is bonded in a distorted square pyramidal geometry to one Sm(1), one Sm(2), one Bi(2), one Bi(6), and one Bi(7) atom. In the second Te site, Te(2) is bonded in a 5-coordinate geometry to one Sm(1), one Sm(2), one Bi(2), one Bi(4), and one Bi(7) atom. In the third Te site, Te(3) is bonded in a distorted rectangular see-saw-like geometry to one Sm(1), one Sm(2), one Sm(3), one Bi(13), and one Bi(7) atom. In the fourth Te site, Te(4) is bonded in a rectangular see-saw-like geometry to one Bi(1), one Bi(11), one Bi(12), and one Bi(5) atom. In the fifth Te site, Te(5) is bonded in a 6-coordinate geometry to one Sm(2), one Bi(1), one Bi(12), one Bi(2), one Bi(4), and one Bi(6) atom. In the sixth Te site, Te(6) is bonded in a rectangular see-saw-like geometry to one Bi(1), one Bi(12), one Bi(5), and one Bi(9) atom. In the seventh Te site, Te(7) is bonded in a distorted rectangular see-saw-like geometry to one Sm(2), one Bi(4), one Bi(5), and one Bi(6) atom. In the eighth Te site, Te(8) is bonded in a 5-coordinate geometry to one Sm(3), one Bi(13), one Bi(14), one Bi(3), and one Bi(8) atom. In the ninth Te site, Te(9) is bonded in a 2-coordinate geometry to one Sm(1), one Sm(2), one Bi(2), one Bi(4), and one Bi(7) atom. In the tenth Te site, Te(10) is bonded in a 3-coordinate geometry to one Sm(2), one Bi(2), one Bi(4), and one Bi(7) atom. In the eleventh Te site, Te(11) is bonded in a 3-coordinate geometry to one Bi(12), one Bi(3), one Bi(5), and one Bi(9) atom. In the twelfth Te site, Te(12) is bonded in a 5-coordinate geometry to one Bi(11), one Bi(14), one Bi(3), one Bi(5), and one Bi(9) atom. In the thirteenth Te site, Te(13) is bonded in a 3-coordinate geometry to one Sm(3), one Bi(3), and one Bi(8) atom. In the fourteenth Te site, Te(14) is bonded in a distorted square pyramidal geometry to one Bi(10), one Bi(11), one Bi(14), one Bi(3), and one Bi(9) atom. In the fifteenth Te site, Te(15) is bonded in a 3-coordinate geometry to one Bi(1), one Bi(4), and one Bi(6) atom. In the sixteenth Te site, Te(16) is bonded in a distorted see-saw-like geometry to one Bi(1), one Bi(5), one Bi(6), and one Bi(9) atom. In the seventeenth Te site, Te(17) is bonded in a 5-coordinate geometry to one Sm(2), one Bi(1), one Bi(12), one Bi(4), and one Bi(6) atom. In the eighteenth Te site, Te(18) is bonded in a 6-coordinate geometry to one Sm(1), one Sm(3), one Bi(10), one Bi(13), one Bi(14), and one Bi(8) atom. In the nineteenth Te site, Te(19) is bonded in a distorted rectangular see-saw-like geometry to one Sm(1), one Sm(3), one Bi(13), and one Bi(7) atom. In the twentieth Te site, Te(20) is bonded in a 4-coordinate geometry to one Sm(1), one Sm(3), one Bi(13), one Bi(2), and one Bi(7) atom. In the twenty-first Te site, Te(21) is bonded in a 6-coordinate geometry to one Bi(10), one Bi(11), one Bi(14), one Bi(3), one Bi(8), and one Bi(9) atom. In the twenty-second Te site, Te(22) is bonded in a 3-coordinate geometry to one Sm(3), one Bi(10), one Bi(3), and one Bi(8) atom. In the twenty-third Te site, Te(23) is bonded in a distorted see-saw-like geometry to one Bi(10), one Bi(11), one Bi(14), and one Bi(3) atom. In the twenty-fourth Te site, Te(24) is bonded in a distorted rectangular see-saw-like geometry to one Sm(1), one Sm(3), one Bi(7), and one Bi(8) atom.
Sm3(Bi7Te12)2 crystallizes in the triclinic P1 space group. There are three inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 8-coordinate geometry to one Te(1), one Te(18), one Te(19), one Te(2), one Te(20), one Te(24), one Te(3), and one Te(9) atom. The Sm(1)-Te(1) bond length is 3.61 Å. The Sm(1)-Te(18) bond length is 3.44 Å. The Sm(1)-Te(19) bond length is 3.13 Å. The Sm(1)-Te(2) bond length is 3.17 Å. The Sm(1)-Te(20) bond length is 3.38 Å. The Sm(1)-Te(24) bond length is 3.23 Å. The Sm(1)-Te(3) bond length is 3.15 Å. The Sm(1)-Te(9) bond length is 3.33 Å. In the second Sm site, Sm(2) is bonded in a 8-coordinate geometry to one Te(1), one Te(10), one Te(17), one Te(2), one Te(3), one Te(5), one Te(7), and one Te(9) atom. The Sm(2)-Te(1) bond length is 3.43 Å. The Sm(2)-Te(10) bond length is 3.15 Å. The Sm(2)-Te(17) bond length is 3.18 Å. The Sm(2)-Te(2) bond length is 3.17 Å. The Sm(2)-Te(3) bond length is 3.33 Å. The Sm(2)-Te(5) bond length is 3.38 Å. The Sm(2)-Te(7) bond length is 3.56 Å. The Sm(2)-Te(9) bond length is 3.18 Å. In the third Sm site, Sm(3) is bonded in a 8-coordinate geometry to one Te(13), one Te(18), one Te(19), one Te(20), one Te(22), one Te(24), one Te(3), and one Te(8) atom. The Sm(3)-Te(13) bond length is 3.19 Å. The Sm(3)-Te(18) bond length is 3.39 Å. The Sm(3)-Te(19) bond length is 3.37 Å. The Sm(3)-Te(20) bond length is 3.18 Å. The Sm(3)-Te(22) bond length is 3.17 Å. The Sm(3)-Te(24) bond length is 3.38 Å. The Sm(3)-Te(3) bond length is 3.22 Å. The Sm(3)-Te(8) bond length is 3.49 Å. There are fourteen inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one Te(15), one Te(16), one Te(17), one Te(4), one Te(5), and one Te(6) atom to form a mixture of distorted face and corner-sharing BiTe6 pentagonal pyramids. The Bi(1)-Te(15) bond length is 3.30 Å. The Bi(1)-Te(16) bond length is 3.13 Å. The Bi(1)-Te(17) bond length is 3.14 Å. The Bi(1)-Te(4) bond length is 3.49 Å. The Bi(1)-Te(5) bond length is 3.35 Å. The Bi(1)-Te(6) bond length is 3.07 Å. In the second Bi site, Bi(2) is bonded to one Te(1), one Te(10), one Te(2), one Te(20), one Te(5), and one Te(9) atom to form a mixture of distorted corner and edge-sharing BiTe6 pentagonal pyramids. The Bi(2)-Te(1) bond length is 3.10 Å. The Bi(2)-Te(10) bond length is 3.13 Å. The Bi(2)-Te(2) bond length is 3.42 Å. The Bi(2)-Te(20) bond length is 3.29 Å. The Bi(2)-Te(5) bond length is 3.24 Å. The Bi(2)-Te(9) bond length is 3.25 Å. In the third Bi site, Bi(3) is bonded in a 8-coordinate geometry to one Te(11), one Te(12), one Te(13), one Te(14), one Te(21), one Te(22), one Te(23), and one Te(8) atom. The Bi(3)-Te(11) bond length is 3.57 Å. The Bi(3)-Te(12) bond length is 3.21 Å. The Bi(3)-Te(13) bond length is 3.13 Å. The Bi(3)-Te(14) bond length is 3.42 Å. The Bi(3)-Te(21) bond length is 3.18 Å. The Bi(3)-Te(22) bond length is 3.63 Å. The Bi(3)-Te(23) bond length is 3.25 Å. The Bi(3)-Te(8) bond length is 3.49 Å. In the fourth Bi site, Bi(4) is bonded in a 7-coordinate geometry to one Te(10), one Te(15), one Te(17), one Te(2), one Te(5), one Te(7), and one Te(9) atom. The Bi(4)-Te(10) bond length is 3.52 Å. The Bi(4)-Te(15) bond length is 3.02 Å. The Bi(4)-Te(17) bond length is 3.51 Å. The Bi(4)-Te(2) bond length is 3.21 Å. The Bi(4)-Te(5) bond length is 3.24 Å. The Bi(4)-Te(7) bond length is 3.10 Å. The Bi(4)-Te(9) bond length is 3.30 Å. In the fifth Bi site, Bi(5) is bonded in a 5-coordinate geometry to one Te(11), one Te(12), one Te(16), one Te(4), one Te(6), and one Te(7) atom. The Bi(5)-Te(11) bond length is 3.18 Å. The Bi(5)-Te(12) bond length is 3.55 Å. The Bi(5)-Te(16) bond length is 3.26 Å. The Bi(5)-Te(4) bond length is 3.08 Å. The Bi(5)-Te(6) bond length is 3.34 Å. The Bi(5)-Te(7) bond length is 3.21 Å. In the sixth Bi site, Bi(6) is bonded to one Te(1), one Te(15), one Te(16), one Te(17), one Te(5), and one Te(7) atom to form a mixture of distorted face, corner, and edge-sharing BiTe6 pentagonal pyramids. The Bi(6)-Te(1) bond length is 3.34 Å. The Bi(6)-Te(15) bond length is 3.11 Å. The Bi(6)-Te(16) bond length is 3.22 Å. The Bi(6)-Te(17) bond length is 3.45 Å. The Bi(6)-Te(5) bond length is 3.32 Å. The Bi(6)-Te(7) bond length is 3.07 Å. In the seventh Bi site, Bi(7) is bonded in a 8-coordinate geometry to one Te(1), one Te(10), one Te(19), one Te(2), one Te(20), one Te(24), one Te(3), and one Te(9) atom. The Bi(7)-Te(1) bond length is 3.19 Å. The Bi(7)-Te(10) bond length is 3.18 Å. The Bi(7)-Te(19) bond length is 3.10 Å. The Bi(7)-Te(2) bond length is 3.44 Å. The Bi(7)-Te(20) bond length is 3.56 Å. The Bi(7)-Te(24) bond length is 3.17 Å. The Bi(7)-Te(3) bond length is 3.59 Å. The Bi(7)-Te(9) bond length is 3.51 Å. In the eighth Bi site, Bi(8) is bonded in a distorted pentagonal pyramidal geometry to one Te(13), one Te(18), one Te(21), one Te(22), one Te(24), and one Te(8) atom. The Bi(8)-Te(13) bond length is 3.04 Å. The Bi(8)-Te(18) bond length is 3.33 Å. The Bi(8)-Te(21) bond length is 3.48 Å. The Bi(8)-Te(22) bond length is 3.19 Å. The Bi(8)-Te(24) bond length is 3.12 Å. The Bi(8)-Te(8) bond length is 3.23 Å. In the ninth Bi site, Bi(9) is bonded in a 6-coordinate geometry to one Te(11), one Te(12), one Te(14), one Te(16), one Te(21), and one Te(6) atom. The Bi(9)-Te(11) bond length is 3.09 Å. The Bi(9)-Te(12) bond length is 3.44 Å. The Bi(9)-Te(14) bond length is 3.45 Å. The Bi(9)-Te(16) bond length is 3.33 Å. The Bi(9)-Te(21) bond length is 3.07 Å. The Bi(9)-Te(6) bond length is 3.21 Å. In the tenth Bi site, Bi(10) is bonded in a 4-coordinate geometry to one Te(14), one Te(18), one Te(21), one Te(22), and one Te(23) atom. The Bi(10)-Te(14) bond length is 3.06 Å. The Bi(10)-Te(18) bond length is 3.33 Å. The Bi(10)-Te(21) bond length is 3.55 Å. The Bi(10)-Te(22) bond length is 3.00 Å. The Bi(10)-Te(23) bond length is 3.03 Å. In the eleventh Bi site, Bi(11) is bonded in a 5-coordinate geometry to one Te(12), one Te(14), one Te(21), one Te(23), and one Te(4) atom. The Bi(11)-Te(12) bond length is 3.09 Å. The Bi(11)-Te(14) bond length is 3.25 Å. The Bi(11)-Te(21) bond length is 3.20 Å. The Bi(11)-Te(23) bond length is 3.37 Å. The Bi(11)-Te(4) bond length is 3.09 Å. In the twelfth Bi site, Bi(12) is bonded in a 5-coordinate geometry to one Te(11), one Te(17), one Te(4), one Te(5), and one Te(6) atom. The Bi(12)-Te(11) bond length is 3.07 Å. The Bi(12)-Te(17) bond length is 3.20 Å. The Bi(12)-Te(4) bond length is 3.10 Å. The Bi(12)-Te(5) bond length is 3.51 Å. The Bi(12)-Te(6) bond length is 3.13 Å. In the thirteenth Bi site, Bi(13) is bonded in a 5-coordinate geometry to one Te(18), one Te(19), one Te(20), one Te(3), and one Te(8) atom. The Bi(13)-Te(18) bond length is 3.24 Å. The Bi(13)-Te(19) bond length is 3.34 Å. The Bi(13)-Te(20) bond length is 3.08 Å. The Bi(13)-Te(3) bond length is 3.11 Å. The Bi(13)-Te(8) bond length is 3.21 Å. In the fourteenth Bi site, Bi(14) is bonded in a 5-coordinate geometry to one Te(12), one Te(14), one Te(18), one Te(21), one Te(23), and one Te(8) atom. The Bi(14)-Te(12) bond length is 3.02 Å. The Bi(14)-Te(14) bond length is 3.21 Å. The Bi(14)-Te(18) bond length is 3.50 Å. The Bi(14)-Te(21) bond length is 3.63 Å. The Bi(14)-Te(23) bond length is 3.18 Å. The Bi(14)-Te(8) bond length is 3.24 Å. There are twenty-four inequivalent Te sites. In the first Te site, Te(1) is bonded in a distorted square pyramidal geometry to one Sm(1), one Sm(2), one Bi(2), one Bi(6), and one Bi(7) atom. In the second Te site, Te(2) is bonded in a 5-coordinate geometry to one Sm(1), one Sm(2), one Bi(2), one Bi(4), and one Bi(7) atom. In the third Te site, Te(3) is bonded in a distorted rectangular see-saw-like geometry to one Sm(1), one Sm(2), one Sm(3), one Bi(13), and one Bi(7) atom. In the fourth Te site, Te(4) is bonded in a rectangular see-saw-like geometry to one Bi(1), one Bi(11), one Bi(12), and one Bi(5) atom. In the fifth Te site, Te(5) is bonded in a 6-coordinate geometry to one Sm(2), one Bi(1), one Bi(12), one Bi(2), one Bi(4), and one Bi(6) atom. In the sixth Te site, Te(6) is bonded in a rectangular see-saw-like geometry to one Bi(1), one Bi(12), one Bi(5), and one Bi(9) atom. In the seventh Te site, Te(7) is bonded in a distorted rectangular see-saw-like geometry to one Sm(2), one Bi(4), one Bi(5), and one Bi(6) atom. In the eighth Te site, Te(8) is bonded in a 5-coordinate geometry to one Sm(3), one Bi(13), one Bi(14), one Bi(3), and one Bi(8) atom. In the ninth Te site, Te(9) is bonded in a 2-coordinate geometry to one Sm(1), one Sm(2), one Bi(2), one Bi(4), and one Bi(7) atom. In the tenth Te site, Te(10) is bonded in a 3-coordinate geometry to one Sm(2), one Bi(2), one Bi(4), and one Bi(7) atom. In the eleventh Te site, Te(11) is bonded in a 3-coordinate geometry to one Bi(12), one Bi(3), one Bi(5), and one Bi(9) atom. In the twelfth Te site, Te(12) is bonded in a 5-coordinate geometry to one Bi(11), one Bi(14), one Bi(3), one Bi(5), and one Bi(9) atom. In the thirteenth Te site, Te(13) is bonded in a 3-coordinate geometry to one Sm(3), one Bi(3), and one Bi(8) atom. In the fourteenth Te site, Te(14) is bonded in a distorted square pyramidal geometry to one Bi(10), one Bi(11), one Bi(14), one Bi(3), and one Bi(9) atom. In the fifteenth Te site, Te(15) is bonded in a 3-coordinate geometry to one Bi(1), one Bi(4), and one Bi(6) atom. In the sixteenth Te site, Te(16) is bonded in a distorted see-saw-like geometry to one Bi(1), one Bi(5), one Bi(6), and one Bi(9) atom. In the seventeenth Te site, Te(17) is bonded in a 5-coordinate geometry to one Sm(2), one Bi(1), one Bi(12), one Bi(4), and one Bi(6) atom. In the eighteenth Te site, Te(18) is bonded in a 6-coordinate geometry to one Sm(1), one Sm(3), one Bi(10), one Bi(13), one Bi(14), and one Bi(8) atom. In the nineteenth Te site, Te(19) is bonded in a distorted rectangular see-saw-like geometry to one Sm(1), one Sm(3), one Bi(13), and one Bi(7) atom. In the twentieth Te site, Te(20) is bonded in a 4-coordinate geometry to one Sm(1), one Sm(3), one Bi(13), one Bi(2), and one Bi(7) atom. In the twenty-first Te site, Te(21) is bonded in a 6-coordinate geometry to one Bi(10), one Bi(11), one Bi(14), one Bi(3), one Bi(8), and one Bi(9) atom. In the twenty-second Te site, Te(22) is bonded in a 3-coordinate geometry to one Sm(3), one Bi(10), one Bi(3), and one Bi(8) atom. In the twenty-third Te site, Te(23) is bonded in a distorted see-saw-like geometry to one Bi(10), one Bi(11), one Bi(14), and one Bi(3) atom. In the twenty-fourth Te site, Te(24) is bonded in a distorted rectangular see-saw-like geometry to one Sm(1), one Sm(3), one Bi(7), and one Bi(8) atom.