The compound described by Tb2PtCu crystallizes in the orthorhombic Pmc2_1 space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 7-coordinate geometry to three equivalent Pt(1) and four equivalent Cu(1) atoms. In the second Tb site, Tb(2) is bonded in a 7-coordinate geometry to four equivalent Pt(1) and three equivalent Cu(1) atoms. Pt(1) is bonded in a 9-coordinate geometry to three equivalent Tb(1), four equivalent Tb(2), and two equivalent Cu(1) atoms. Cu(1) is bonded in a 9-coordinate geometry to three equivalent Tb(2), four equivalent Tb(1), and two equivalent Pt(1) atoms. is represented by the CIF file [CIF]
data_Tb2CuPt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.438
_cell_length_b   5.510
_cell_length_c   7.142
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   174.633
_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  0.000  0.117  0.684  1.0
  Tb  Tb1  1  0.000  0.883  0.184  1.0
  Tb  Tb2  1  0.500  0.393  0.316  1.0
  Tb  Tb3  1  0.500  0.607  0.816  1.0
  Cu  Cu4  1  0.500  0.890  0.463  1.0
  Cu  Cu5  1  0.500  0.110  0.963  1.0
  Pt  Pt6  1  0.000  0.617  0.537  1.0
  Pt  Pt7  1  0.000  0.383  0.037  1.0
[/CIF]
.
The compound described by Tb2PtCu crystallizes in the orthorhombic Pmc2_1 space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 7-coordinate geometry to three equivalent Pt(1) and four equivalent Cu(1) atoms. In the second Tb site, Tb(2) is bonded in a 7-coordinate geometry to four equivalent Pt(1) and three equivalent Cu(1) atoms. Pt(1) is bonded in a 9-coordinate geometry to three equivalent Tb(1), four equivalent Tb(2), and two equivalent Cu(1) atoms. Cu(1) is bonded in a 9-coordinate geometry to three equivalent Tb(2), four equivalent Tb(1), and two equivalent Pt(1) atoms. is represented by the CIF file [CIF]
data_Tb2CuPt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.438
_cell_length_b   5.510
_cell_length_c   7.142
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   174.633
_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  0.000  0.117  0.684  1.0
  Tb  Tb1  1  0.000  0.883  0.184  1.0
  Tb  Tb2  1  0.500  0.393  0.316  1.0
  Tb  Tb3  1  0.500  0.607  0.816  1.0
  Cu  Cu4  1  0.500  0.890  0.463  1.0
  Cu  Cu5  1  0.500  0.110  0.963  1.0
  Pt  Pt6  1  0.000  0.617  0.537  1.0
  Pt  Pt7  1  0.000  0.383  0.037  1.0
[/CIF]
.