The crystal structure described by Tb4Ni3Bi8 crystallizes in the tetragonal P-4m2 space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 12-coordinate geometry to four equivalent Ni(1,3); two equivalent Bi(3); two equivalent Bi(4); and four equivalent Bi(2) atoms. In the second Tb site, Tb(2) is bonded in a 11-coordinate geometry to two equivalent Ni(2), two equivalent Bi(3), two equivalent Bi(4), and five equivalent Bi(1) atoms. There are two inequivalent Ni sites. In the first Ni site, Ni(1,3) is bonded in a body-centered cubic geometry to four equivalent Tb(1) and four equivalent Bi(2) atoms. In the second Ni site, Ni(2) is bonded in a body-centered cubic geometry to four equivalent Tb(2) and four equivalent Bi(1) atoms. There are four inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 7-coordinate geometry to five equivalent Tb(2) and two equivalent Ni(2) atoms. In the second Bi site, Bi(2) is bonded in a 8-coordinate geometry to four equivalent Tb(1) and four equivalent Ni(1,3) atoms. In the third Bi site, Bi(3) is bonded in a 8-coordinate geometry to two equivalent Tb(1), two equivalent Tb(2), and four equivalent Bi(4) atoms. In the fourth Bi site, Bi(4) is bonded in a 8-coordinate geometry to two equivalent Tb(1), two equivalent Tb(2), and four equivalent Bi(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tb4Ni3Bi8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.541
_cell_length_b   4.541
_cell_length_c   18.714
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   385.828
_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
  Tb  Tb0  1  0.500  0.000  0.387  1.0
  Tb  Tb1  1  0.500  0.000  0.887  1.0
  Tb  Tb2  1  0.000  0.500  0.113  1.0
  Tb  Tb3  1  0.000  0.500  0.613  1.0
  Ni  Ni4  1  0.500  0.500  0.500  1.0
  Ni  Ni5  1  0.000  0.000  0.000  1.0
  Ni  Ni6  1  0.000  0.000  0.500  1.0
  Bi  Bi7  1  0.500  0.000  0.069  1.0
  Bi  Bi8  1  0.500  0.000  0.575  1.0
  Bi  Bi9  1  0.000  0.500  0.425  1.0
  Bi  Bi10  1  0.000  0.500  0.931  1.0
  Bi  Bi11  1  0.500  0.500  0.249  1.0
  Bi  Bi12  1  0.500  0.500  0.751  1.0
  Bi  Bi13  1  0.000  0.000  0.249  1.0
  Bi  Bi14  1  0.000  0.000  0.751  1.0
[/CIF]
.
The crystal structure described by Tb4Ni3Bi8 crystallizes in the tetragonal P-4m2 space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 12-coordinate geometry to four equivalent Ni(1,3); two equivalent Bi(3); two equivalent Bi(4); and four equivalent Bi(2) atoms. In the second Tb site, Tb(2) is bonded in a 11-coordinate geometry to two equivalent Ni(2), two equivalent Bi(3), two equivalent Bi(4), and five equivalent Bi(1) atoms. There are two inequivalent Ni sites. In the first Ni site, Ni(1,3) is bonded in a body-centered cubic geometry to four equivalent Tb(1) and four equivalent Bi(2) atoms. In the second Ni site, Ni(2) is bonded in a body-centered cubic geometry to four equivalent Tb(2) and four equivalent Bi(1) atoms. There are four inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 7-coordinate geometry to five equivalent Tb(2) and two equivalent Ni(2) atoms. In the second Bi site, Bi(2) is bonded in a 8-coordinate geometry to four equivalent Tb(1) and four equivalent Ni(1,3) atoms. In the third Bi site, Bi(3) is bonded in a 8-coordinate geometry to two equivalent Tb(1), two equivalent Tb(2), and four equivalent Bi(4) atoms. In the fourth Bi site, Bi(4) is bonded in a 8-coordinate geometry to two equivalent Tb(1), two equivalent Tb(2), and four equivalent Bi(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tb4Ni3Bi8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.541
_cell_length_b   4.541
_cell_length_c   18.714
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   385.828
_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
  Tb  Tb0  1  0.500  0.000  0.387  1.0
  Tb  Tb1  1  0.500  0.000  0.887  1.0
  Tb  Tb2  1  0.000  0.500  0.113  1.0
  Tb  Tb3  1  0.000  0.500  0.613  1.0
  Ni  Ni4  1  0.500  0.500  0.500  1.0
  Ni  Ni5  1  0.000  0.000  0.000  1.0
  Ni  Ni6  1  0.000  0.000  0.500  1.0
  Bi  Bi7  1  0.500  0.000  0.069  1.0
  Bi  Bi8  1  0.500  0.000  0.575  1.0
  Bi  Bi9  1  0.000  0.500  0.425  1.0
  Bi  Bi10  1  0.000  0.500  0.931  1.0
  Bi  Bi11  1  0.500  0.500  0.249  1.0
  Bi  Bi12  1  0.500  0.500  0.751  1.0
  Bi  Bi13  1  0.000  0.000  0.249  1.0
  Bi  Bi14  1  0.000  0.000  0.751  1.0
[/CIF]
.