The crystal structure described by Tb3(CuSn)4 crystallizes in the triclinic P-1 space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 12-coordinate geometry to three equivalent Cu(1), three equivalent Cu(2), two equivalent Sn(2), and four equivalent Sn(1) atoms. In the second Tb site, Tb(2) is bonded to two equivalent Sn(2) and four equivalent Sn(1) atoms to form distorted edge-sharing TbSn6 octahedra. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 8-coordinate geometry to three equivalent Tb(1), one Cu(2), one Sn(1), and three equivalent Sn(2) atoms. In the second Cu site, Cu(2) is bonded in a 8-coordinate geometry to three equivalent Tb(1), one Cu(1), one Sn(1), and three equivalent Sn(2) atoms. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 9-coordinate geometry to two equivalent Tb(2), four equivalent Tb(1), one Cu(1), one Cu(2), and one Sn(1) atom. In the second Sn site, Sn(2) is bonded in a 9-coordinate geometry to one Tb(2), two equivalent Tb(1), three equivalent Cu(1), and three equivalent Cu(2) atoms. is represented by the CIF file [CIF]
data_Tb3(CuSn)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.456
_cell_length_b   6.918
_cell_length_c   8.426
_cell_angle_alpha   114.288
_cell_angle_beta   105.308
_cell_angle_gamma   89.948
_symmetry_Int_Tables_number   1
_cell_volume   226.638
_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  0.868  0.369  0.736  1.0
  Tb  Tb1  1  0.000  0.000  0.000  1.0
  Tb  Tb2  1  0.132  0.631  0.264  1.0
  Cu  Cu3  1  0.674  0.984  0.342  1.0
  Cu  Cu4  1  0.330  0.644  0.662  1.0
  Cu  Cu5  1  0.670  0.356  0.338  1.0
  Cu  Cu6  1  0.326  0.016  0.658  1.0
  Sn  Sn7  1  0.501  0.703  0.002  1.0
  Sn  Sn8  1  0.499  0.297  0.998  1.0
  Sn  Sn9  1  0.782  0.782  0.567  1.0
  Sn  Sn10  1  0.218  0.218  0.433  1.0
[/CIF]
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The crystal structure described by Tb3(CuSn)4 crystallizes in the triclinic P-1 space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 12-coordinate geometry to three equivalent Cu(1), three equivalent Cu(2), two equivalent Sn(2), and four equivalent Sn(1) atoms. In the second Tb site, Tb(2) is bonded to two equivalent Sn(2) and four equivalent Sn(1) atoms to form distorted edge-sharing TbSn6 octahedra. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 8-coordinate geometry to three equivalent Tb(1), one Cu(2), one Sn(1), and three equivalent Sn(2) atoms. In the second Cu site, Cu(2) is bonded in a 8-coordinate geometry to three equivalent Tb(1), one Cu(1), one Sn(1), and three equivalent Sn(2) atoms. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 9-coordinate geometry to two equivalent Tb(2), four equivalent Tb(1), one Cu(1), one Cu(2), and one Sn(1) atom. In the second Sn site, Sn(2) is bonded in a 9-coordinate geometry to one Tb(2), two equivalent Tb(1), three equivalent Cu(1), and three equivalent Cu(2) atoms. is represented by the CIF file [CIF]
data_Tb3(CuSn)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.456
_cell_length_b   6.918
_cell_length_c   8.426
_cell_angle_alpha   114.288
_cell_angle_beta   105.308
_cell_angle_gamma   89.948
_symmetry_Int_Tables_number   1
_cell_volume   226.638
_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  0.868  0.369  0.736  1.0
  Tb  Tb1  1  0.000  0.000  0.000  1.0
  Tb  Tb2  1  0.132  0.631  0.264  1.0
  Cu  Cu3  1  0.674  0.984  0.342  1.0
  Cu  Cu4  1  0.330  0.644  0.662  1.0
  Cu  Cu5  1  0.670  0.356  0.338  1.0
  Cu  Cu6  1  0.326  0.016  0.658  1.0
  Sn  Sn7  1  0.501  0.703  0.002  1.0
  Sn  Sn8  1  0.499  0.297  0.998  1.0
  Sn  Sn9  1  0.782  0.782  0.567  1.0
  Sn  Sn10  1  0.218  0.218  0.433  1.0
[/CIF]
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