The structure described by Tb5CuPb3 crystallizes in the hexagonal P6_3/mcm space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded to two equivalent Cu(1) and five equivalent Pb(1) atoms to form a mixture of distorted edge, face, and corner-sharing TbCu2Pb5 pentagonal bipyramids. In the second Tb site, Tb(2) is bonded in a 6-coordinate geometry to six equivalent Pb(1) atoms. Cu(1) is bonded to six equivalent Tb(1) atoms to form face-sharing CuTb6 octahedra. Pb(1) is bonded in a 9-coordinate geometry to four equivalent Tb(2) and five equivalent Tb(1) atoms. is represented by the CIF file [CIF]
data_Tb5CuPb3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.175
_cell_length_b   9.175
_cell_length_c   6.710
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   489.123
_cell_formula_units_Z   2
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  0.252  0.000  0.250  1.0
  Tb  Tb1  1  0.748  0.000  0.750  1.0
  Tb  Tb2  1  0.000  0.252  0.250  1.0
  Tb  Tb3  1  0.000  0.748  0.750  1.0
  Tb  Tb4  1  0.748  0.748  0.250  1.0
  Tb  Tb5  1  0.252  0.252  0.750  1.0
  Tb  Tb6  1  0.333  0.667  0.000  1.0
  Tb  Tb7  1  0.667  0.333  0.000  1.0
  Tb  Tb8  1  0.667  0.333  0.500  1.0
  Tb  Tb9  1  0.333  0.667  0.500  1.0
  Cu  Cu10  1  0.000  0.000  0.000  1.0
  Cu  Cu11  1  0.000  0.000  0.500  1.0
  Pb  Pb12  1  0.611  0.000  0.250  1.0
  Pb  Pb13  1  0.389  0.000  0.750  1.0
  Pb  Pb14  1  0.000  0.611  0.250  1.0
  Pb  Pb15  1  0.000  0.389  0.750  1.0
  Pb  Pb16  1  0.389  0.389  0.250  1.0
  Pb  Pb17  1  0.611  0.611  0.750  1.0
[/CIF]
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The structure described by Tb5CuPb3 crystallizes in the hexagonal P6_3/mcm space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded to two equivalent Cu(1) and five equivalent Pb(1) atoms to form a mixture of distorted edge, face, and corner-sharing TbCu2Pb5 pentagonal bipyramids. In the second Tb site, Tb(2) is bonded in a 6-coordinate geometry to six equivalent Pb(1) atoms. Cu(1) is bonded to six equivalent Tb(1) atoms to form face-sharing CuTb6 octahedra. Pb(1) is bonded in a 9-coordinate geometry to four equivalent Tb(2) and five equivalent Tb(1) atoms. is represented by the CIF file [CIF]
data_Tb5CuPb3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.175
_cell_length_b   9.175
_cell_length_c   6.710
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   489.123
_cell_formula_units_Z   2
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  0.252  0.000  0.250  1.0
  Tb  Tb1  1  0.748  0.000  0.750  1.0
  Tb  Tb2  1  0.000  0.252  0.250  1.0
  Tb  Tb3  1  0.000  0.748  0.750  1.0
  Tb  Tb4  1  0.748  0.748  0.250  1.0
  Tb  Tb5  1  0.252  0.252  0.750  1.0
  Tb  Tb6  1  0.333  0.667  0.000  1.0
  Tb  Tb7  1  0.667  0.333  0.000  1.0
  Tb  Tb8  1  0.667  0.333  0.500  1.0
  Tb  Tb9  1  0.333  0.667  0.500  1.0
  Cu  Cu10  1  0.000  0.000  0.000  1.0
  Cu  Cu11  1  0.000  0.000  0.500  1.0
  Pb  Pb12  1  0.611  0.000  0.250  1.0
  Pb  Pb13  1  0.389  0.000  0.750  1.0
  Pb  Pb14  1  0.000  0.611  0.250  1.0
  Pb  Pb15  1  0.000  0.389  0.750  1.0
  Pb  Pb16  1  0.389  0.389  0.250  1.0
  Pb  Pb17  1  0.611  0.611  0.750  1.0
[/CIF]
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