The crystal structure described by Yb3(Bi7Te12)2 crystallizes in the triclinic P1 space group. There are three inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a 7-coordinate geometry to one Te(18), one Te(19), one Te(2), one Te(23), one Te(24), one Te(4), and one Te(8) atom. In the second Yb site, Yb(2) is bonded in a 8-coordinate geometry to one Bi(7), one Te(1), one Te(10), one Te(16), one Te(2), one Te(4), one Te(5), and one Te(8) atom. In the third Yb site, Yb(3) is bonded in a 6-coordinate geometry to one Te(12), one Te(18), one Te(19), one Te(20), one Te(4), and one Te(9) atom. There are fourteen inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 6-coordinate geometry to one Bi(6), one Te(14), one Te(15), one Te(16), one Te(5), and one Te(6) atom. In the second Bi site, Bi(2) is bonded in a 5-coordinate geometry to one Te(1), one Te(19), one Te(2), one Te(24), and one Te(8) atom. In the third Bi site, Bi(3) is bonded in a 4-coordinate geometry to one Te(11), one Te(12), one Te(20), and one Te(21) atom. In the fourth Bi site, Bi(4) is bonded in a 2-coordinate geometry to one Te(15), one Te(16), one Te(17), and one Te(3) atom. In the fifth Bi site, Bi(5) is bonded in a 2-coordinate geometry to one Te(1), one Te(15), one Te(2), one Te(5), and one Te(7) atom. In the sixth Bi site, Bi(6) is bonded in a 8-coordinate geometry to one Bi(1), one Te(1), one Te(10), one Te(15), one Te(2), one Te(5), one Te(7), and one Te(8) atom. In the seventh Bi site, Bi(7) is bonded in a 8-coordinate geometry to one Yb(2), one Te(1), one Te(10), one Te(18), one Te(19), one Te(24), one Te(4), and one Te(8) atom. In the eighth Bi site, Bi(8) is bonded in a 4-coordinate geometry to one Te(18), one Te(20), one Te(23), and one Te(24) atom. In the ninth Bi site, Bi(9) is bonded in a 4-coordinate geometry to one Bi(10), one Te(20), one Te(22), one Te(23), and one Te(9) atom. In the tenth Bi site, Bi(10) is bonded in a 7-coordinate geometry to one Bi(9), one Te(11), one Te(13), one Te(21), one Te(22), one Te(3), and one Te(6) atom. In the eleventh Bi site, Bi(11) is bonded in a 6-coordinate geometry to one Te(11), one Te(14), one Te(17), one Te(21), one Te(3), and one Te(6) atom. In the twelfth Bi site, Bi(12) is bonded in a 6-coordinate geometry to one Te(14), one Te(16), one Te(17), one Te(3), one Te(6), and one Te(7) atom. In the thirteenth Bi site, Bi(13) is bonded in a 5-coordinate geometry to one Te(12), one Te(18), one Te(19), one Te(24), and one Te(9) atom. In the fourteenth Bi site, Bi(14) is bonded in a 5-coordinate geometry to one Te(13), one Te(20), one Te(22), one Te(23), and one Te(9) atom. There are twenty-four inequivalent Te sites. In the first Te site, Te(1) is bonded in a 6-coordinate geometry to one Yb(2), one Bi(2), one Bi(5), one Bi(6), one Bi(7), and one Te(4) atom. In the second Te site, Te(2) is bonded in a 5-coordinate geometry to one Yb(1), one Yb(2), one Bi(2), one Bi(5), and one Bi(6) atom. In the third Te site, Te(3) is bonded in a 4-coordinate geometry to one Bi(10), one Bi(11), one Bi(12), and one Bi(4) atom. In the fourth Te site, Te(4) is bonded in a 3-coordinate geometry to one Yb(1), one Yb(2), one Yb(3), one Bi(7), and one Te(1) atom. In the fifth Te site, Te(5) is bonded in a distorted rectangular see-saw-like geometry to one Yb(2), one Bi(1), one Bi(5), and one Bi(6) atom. In the sixth Te site, Te(6) is bonded in a 2-coordinate geometry to one Bi(1), one Bi(10), one Bi(11), and one Bi(12) atom. In the seventh Te site, Te(7) is bonded in a 2-coordinate geometry to one Bi(12), one Bi(5), and one Bi(6) atom. In the eighth Te site, Te(8) is bonded in a 2-coordinate geometry to one Yb(1), one Yb(2), one Bi(2), one Bi(6), and one Bi(7) atom. In the ninth Te site, Te(9) is bonded in a 1-coordinate geometry to one Yb(3), one Bi(13), one Bi(14), and one Bi(9) atom. In the tenth Te site, Te(10) is bonded in a 2-coordinate geometry to one Yb(2), one Bi(6), and one Bi(7) atom. In the eleventh Te site, Te(11) is bonded in a 3-coordinate geometry to one Bi(10), one Bi(11), and one Bi(3) atom. In the twelfth Te site, Te(12) is bonded in a 3-coordinate geometry to one Yb(3), one Bi(13), and one Bi(3) atom. In the thirteenth Te site, Te(13) is bonded in a distorted bent 150 degrees geometry to one Bi(10) and one Bi(14) atom. In the fourteenth Te site, Te(14) is bonded in a 1-coordinate geometry to one Bi(1), one Bi(11), and one Bi(12) atom. In the fifteenth Te site, Te(15) is bonded in a 4-coordinate geometry to one Bi(1), one Bi(4), one Bi(5), and one Bi(6) atom. In the sixteenth Te site, Te(16) is bonded in a 2-coordinate geometry to one Yb(2), one Bi(1), one Bi(12), and one Bi(4) atom. In the seventeenth Te site, Te(17) is bonded in a 3-coordinate geometry to one Bi(11), one Bi(12), and one Bi(4) atom. In the eighteenth Te site, Te(18) is bonded in a 5-coordinate geometry to one Yb(1), one Yb(3), one Bi(13), one Bi(7), and one Bi(8) atom. In the nineteenth Te site, Te(19) is bonded in a 5-coordinate geometry to one Yb(1), one Yb(3), one Bi(13), one Bi(2), and one Bi(7) atom. In the twentieth Te site, Te(20) is bonded in a 5-coordinate geometry to one Yb(3), one Bi(14), one Bi(3), one Bi(8), and one Bi(9) atom. In the twenty-first Te site, Te(21) is bonded in a 3-coordinate geometry to one Bi(10), one Bi(11), and one Bi(3) atom. In the twenty-second Te site, Te(22) is bonded in a 3-coordinate geometry to one Bi(10), one Bi(14), and one Bi(9) atom. In the twenty-third Te site, Te(23) is bonded in a 4-coordinate geometry to one Yb(1), one Bi(14), one Bi(8), and one Bi(9) atom. In the twenty-fourth Te site, Te(24) is bonded in a 4-coordinate geometry to one Yb(1), one Bi(13), one Bi(2), one Bi(7), and one Bi(8) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Yb3(Bi7Te12)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.295
_cell_length_b   8.338
_cell_length_c   21.502
_cell_angle_alpha   97.863
_cell_angle_beta   97.123
_cell_angle_gamma   108.793
_symmetry_Int_Tables_number   1
_cell_volume   1372.081
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Yb  Yb0  1  0.172  0.795  0.045  1.0
  Yb  Yb1  1  0.972  0.339  0.202  1.0
  Yb  Yb2  1  0.774  0.527  0.924  1.0
  Bi  Bi3  1  0.483  0.174  0.389  1.0
  Bi  Bi4  1  0.512  0.402  0.119  1.0
  Bi  Bi5  1  0.847  0.474  0.713  1.0
  Bi  Bi6  1  0.861  0.691  0.435  1.0
  Bi  Bi7  1  0.537  0.677  0.280  1.0
  Bi  Bi8  1  0.175  0.924  0.254  1.0
  Bi  Bi9  1  0.732  0.991  0.087  1.0
  Bi  Bi10  1  0.630  0.979  0.887  1.0
  Bi  Bi11  1  0.172  0.015  0.774  1.0
  Bi  Bi12  1  0.888  0.980  0.634  1.0
  Bi  Bi13  1  0.526  0.236  0.575  1.0
  Bi  Bi14  1  0.990  0.251  0.432  1.0
  Bi  Bi15  1  0.192  0.321  0.950  1.0
  Bi  Bi16  1  0.347  0.574  0.752  1.0
  Te  Te17  1  0.791  0.666  0.164  1.0
  Te  Te18  1  0.308  0.668  0.167  1.0
  Te  Te19  1  0.102  0.980  0.502  1.0
  Te  Te20  1  0.898  0.411  0.051  1.0
  Te  Te21  1  0.263  0.285  0.293  1.0
  Te  Te22  1  0.630  0.998  0.494  1.0
  Te  Te23  1  0.830  0.956  0.325  1.0
  Te  Te24  1  0.112  0.103  0.121  1.0
  Te  Te25  1  0.460  0.324  0.836  1.0
  Te  Te26  1  0.582  0.088  0.213  1.0
  Te  Te27  1  0.628  0.628  0.632  1.0
  Te  Te28  1  0.956  0.327  0.841  1.0
  Te  Te29  1  0.177  0.315  0.667  1.0
  Te  Te30  1  0.447  0.455  0.459  1.0
  Te  Te31  1  0.252  0.759  0.377  1.0
  Te  Te32  1  0.825  0.455  0.330  1.0
  Te  Te33  1  0.913  0.428  0.544  1.0
  Te  Te34  1  0.936  0.938  0.961  1.0
  Te  Te35  1  0.467  0.619  0.998  1.0
  Te  Te36  1  0.795  0.775  0.792  1.0
  Te  Te37  1  0.600  0.103  0.708  1.0
  Te  Te38  1  0.181  0.821  0.664  1.0
  Te  Te39  1  0.251  0.750  0.874  1.0
  Te  Te40  1  0.498  0.131  0.996  1.0
[/CIF]
.
The crystal structure described by Yb3(Bi7Te12)2 crystallizes in the triclinic P1 space group. There are three inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a 7-coordinate geometry to one Te(18), one Te(19), one Te(2), one Te(23), one Te(24), one Te(4), and one Te(8) atom. In the second Yb site, Yb(2) is bonded in a 8-coordinate geometry to one Bi(7), one Te(1), one Te(10), one Te(16), one Te(2), one Te(4), one Te(5), and one Te(8) atom. In the third Yb site, Yb(3) is bonded in a 6-coordinate geometry to one Te(12), one Te(18), one Te(19), one Te(20), one Te(4), and one Te(9) atom. There are fourteen inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 6-coordinate geometry to one Bi(6), one Te(14), one Te(15), one Te(16), one Te(5), and one Te(6) atom. In the second Bi site, Bi(2) is bonded in a 5-coordinate geometry to one Te(1), one Te(19), one Te(2), one Te(24), and one Te(8) atom. In the third Bi site, Bi(3) is bonded in a 4-coordinate geometry to one Te(11), one Te(12), one Te(20), and one Te(21) atom. In the fourth Bi site, Bi(4) is bonded in a 2-coordinate geometry to one Te(15), one Te(16), one Te(17), and one Te(3) atom. In the fifth Bi site, Bi(5) is bonded in a 2-coordinate geometry to one Te(1), one Te(15), one Te(2), one Te(5), and one Te(7) atom. In the sixth Bi site, Bi(6) is bonded in a 8-coordinate geometry to one Bi(1), one Te(1), one Te(10), one Te(15), one Te(2), one Te(5), one Te(7), and one Te(8) atom. In the seventh Bi site, Bi(7) is bonded in a 8-coordinate geometry to one Yb(2), one Te(1), one Te(10), one Te(18), one Te(19), one Te(24), one Te(4), and one Te(8) atom. In the eighth Bi site, Bi(8) is bonded in a 4-coordinate geometry to one Te(18), one Te(20), one Te(23), and one Te(24) atom. In the ninth Bi site, Bi(9) is bonded in a 4-coordinate geometry to one Bi(10), one Te(20), one Te(22), one Te(23), and one Te(9) atom. In the tenth Bi site, Bi(10) is bonded in a 7-coordinate geometry to one Bi(9), one Te(11), one Te(13), one Te(21), one Te(22), one Te(3), and one Te(6) atom. In the eleventh Bi site, Bi(11) is bonded in a 6-coordinate geometry to one Te(11), one Te(14), one Te(17), one Te(21), one Te(3), and one Te(6) atom. In the twelfth Bi site, Bi(12) is bonded in a 6-coordinate geometry to one Te(14), one Te(16), one Te(17), one Te(3), one Te(6), and one Te(7) atom. In the thirteenth Bi site, Bi(13) is bonded in a 5-coordinate geometry to one Te(12), one Te(18), one Te(19), one Te(24), and one Te(9) atom. In the fourteenth Bi site, Bi(14) is bonded in a 5-coordinate geometry to one Te(13), one Te(20), one Te(22), one Te(23), and one Te(9) atom. There are twenty-four inequivalent Te sites. In the first Te site, Te(1) is bonded in a 6-coordinate geometry to one Yb(2), one Bi(2), one Bi(5), one Bi(6), one Bi(7), and one Te(4) atom. In the second Te site, Te(2) is bonded in a 5-coordinate geometry to one Yb(1), one Yb(2), one Bi(2), one Bi(5), and one Bi(6) atom. In the third Te site, Te(3) is bonded in a 4-coordinate geometry to one Bi(10), one Bi(11), one Bi(12), and one Bi(4) atom. In the fourth Te site, Te(4) is bonded in a 3-coordinate geometry to one Yb(1), one Yb(2), one Yb(3), one Bi(7), and one Te(1) atom. In the fifth Te site, Te(5) is bonded in a distorted rectangular see-saw-like geometry to one Yb(2), one Bi(1), one Bi(5), and one Bi(6) atom. In the sixth Te site, Te(6) is bonded in a 2-coordinate geometry to one Bi(1), one Bi(10), one Bi(11), and one Bi(12) atom. In the seventh Te site, Te(7) is bonded in a 2-coordinate geometry to one Bi(12), one Bi(5), and one Bi(6) atom. In the eighth Te site, Te(8) is bonded in a 2-coordinate geometry to one Yb(1), one Yb(2), one Bi(2), one Bi(6), and one Bi(7) atom. In the ninth Te site, Te(9) is bonded in a 1-coordinate geometry to one Yb(3), one Bi(13), one Bi(14), and one Bi(9) atom. In the tenth Te site, Te(10) is bonded in a 2-coordinate geometry to one Yb(2), one Bi(6), and one Bi(7) atom. In the eleventh Te site, Te(11) is bonded in a 3-coordinate geometry to one Bi(10), one Bi(11), and one Bi(3) atom. In the twelfth Te site, Te(12) is bonded in a 3-coordinate geometry to one Yb(3), one Bi(13), and one Bi(3) atom. In the thirteenth Te site, Te(13) is bonded in a distorted bent 150 degrees geometry to one Bi(10) and one Bi(14) atom. In the fourteenth Te site, Te(14) is bonded in a 1-coordinate geometry to one Bi(1), one Bi(11), and one Bi(12) atom. In the fifteenth Te site, Te(15) is bonded in a 4-coordinate geometry to one Bi(1), one Bi(4), one Bi(5), and one Bi(6) atom. In the sixteenth Te site, Te(16) is bonded in a 2-coordinate geometry to one Yb(2), one Bi(1), one Bi(12), and one Bi(4) atom. In the seventeenth Te site, Te(17) is bonded in a 3-coordinate geometry to one Bi(11), one Bi(12), and one Bi(4) atom. In the eighteenth Te site, Te(18) is bonded in a 5-coordinate geometry to one Yb(1), one Yb(3), one Bi(13), one Bi(7), and one Bi(8) atom. In the nineteenth Te site, Te(19) is bonded in a 5-coordinate geometry to one Yb(1), one Yb(3), one Bi(13), one Bi(2), and one Bi(7) atom. In the twentieth Te site, Te(20) is bonded in a 5-coordinate geometry to one Yb(3), one Bi(14), one Bi(3), one Bi(8), and one Bi(9) atom. In the twenty-first Te site, Te(21) is bonded in a 3-coordinate geometry to one Bi(10), one Bi(11), and one Bi(3) atom. In the twenty-second Te site, Te(22) is bonded in a 3-coordinate geometry to one Bi(10), one Bi(14), and one Bi(9) atom. In the twenty-third Te site, Te(23) is bonded in a 4-coordinate geometry to one Yb(1), one Bi(14), one Bi(8), and one Bi(9) atom. In the twenty-fourth Te site, Te(24) is bonded in a 4-coordinate geometry to one Yb(1), one Bi(13), one Bi(2), one Bi(7), and one Bi(8) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Yb3(Bi7Te12)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.295
_cell_length_b   8.338
_cell_length_c   21.502
_cell_angle_alpha   97.863
_cell_angle_beta   97.123
_cell_angle_gamma   108.793
_symmetry_Int_Tables_number   1
_cell_volume   1372.081
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Yb  Yb0  1  0.172  0.795  0.045  1.0
  Yb  Yb1  1  0.972  0.339  0.202  1.0
  Yb  Yb2  1  0.774  0.527  0.924  1.0
  Bi  Bi3  1  0.483  0.174  0.389  1.0
  Bi  Bi4  1  0.512  0.402  0.119  1.0
  Bi  Bi5  1  0.847  0.474  0.713  1.0
  Bi  Bi6  1  0.861  0.691  0.435  1.0
  Bi  Bi7  1  0.537  0.677  0.280  1.0
  Bi  Bi8  1  0.175  0.924  0.254  1.0
  Bi  Bi9  1  0.732  0.991  0.087  1.0
  Bi  Bi10  1  0.630  0.979  0.887  1.0
  Bi  Bi11  1  0.172  0.015  0.774  1.0
  Bi  Bi12  1  0.888  0.980  0.634  1.0
  Bi  Bi13  1  0.526  0.236  0.575  1.0
  Bi  Bi14  1  0.990  0.251  0.432  1.0
  Bi  Bi15  1  0.192  0.321  0.950  1.0
  Bi  Bi16  1  0.347  0.574  0.752  1.0
  Te  Te17  1  0.791  0.666  0.164  1.0
  Te  Te18  1  0.308  0.668  0.167  1.0
  Te  Te19  1  0.102  0.980  0.502  1.0
  Te  Te20  1  0.898  0.411  0.051  1.0
  Te  Te21  1  0.263  0.285  0.293  1.0
  Te  Te22  1  0.630  0.998  0.494  1.0
  Te  Te23  1  0.830  0.956  0.325  1.0
  Te  Te24  1  0.112  0.103  0.121  1.0
  Te  Te25  1  0.460  0.324  0.836  1.0
  Te  Te26  1  0.582  0.088  0.213  1.0
  Te  Te27  1  0.628  0.628  0.632  1.0
  Te  Te28  1  0.956  0.327  0.841  1.0
  Te  Te29  1  0.177  0.315  0.667  1.0
  Te  Te30  1  0.447  0.455  0.459  1.0
  Te  Te31  1  0.252  0.759  0.377  1.0
  Te  Te32  1  0.825  0.455  0.330  1.0
  Te  Te33  1  0.913  0.428  0.544  1.0
  Te  Te34  1  0.936  0.938  0.961  1.0
  Te  Te35  1  0.467  0.619  0.998  1.0
  Te  Te36  1  0.795  0.775  0.792  1.0
  Te  Te37  1  0.600  0.103  0.708  1.0
  Te  Te38  1  0.181  0.821  0.664  1.0
  Te  Te39  1  0.251  0.750  0.874  1.0
  Te  Te40  1  0.498  0.131  0.996  1.0
[/CIF]
.