data_Tb3(CuSi)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.89
_cell_length_b   7.89
_cell_length_c   7.89
_cell_angle_alpha   149.5
_cell_angle_beta   130.87
_cell_angle_gamma   58.93
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Tb3(CuSi)4
_chemical_formula_sum   'Tb3 Cu4 Si4'
_cell_volume   187.06
_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  0.0  0.28  0.79  1.0
  Tb  Tb1  1  0.08  0.0  0.08  1.0
  Tb  Tb2  1  0.0  0.0  0.0  1.0
  Cu  Cu3  1  0.0  0.03  0.18  1.0
  Cu  Cu4  1  0.0  0.03  0.56  1.0
  Cu  Cu5  1  0.08  0.25  0.31  1.0
  Cu  Cu6  1  0.08  0.25  0.69  1.0
  Si  Si7  1  0.0  0.21  0.87  1.0
  Si  Si8  1  0.08  0.07  0.0  1.0
  Si  Si9  1  0.0  0.0  0.97  1.0
  Si  Si10  1  0.0  0.0  0.77  1.0

data_Tb3(CuSi)4
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.15
_cell_length_b   6.56
_cell_length_c   7.89
_cell_angle_alpha   114.56
_cell_angle_beta   105.25
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Tb3(CuSi)4
_chemical_formula_sum   'Tb3 Cu4 Si4'
_cell_volume   187.06
_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  0.0  0.0  0.0  1.0
  Tb  Tb1  1  0.21  0.49  0.49  1.0
  Tb  Tb2  1  1.0  0.92  1.0  1.0
  Si  Si3  1  0.03  0.03  0.03  1.0
  Si  Si4  1  0.08  0.07  0.15  1.0
  Si  Si5  1  0.13  0.34  0.34  1.0
  Si  Si6  1  0.23  0.23  0.23  1.0
  Cu  Cu7  1  0.39  0.56  0.63  1.0
  Cu  Cu8  1  0.44  0.47  0.47  1.0
  Cu  Cu9  1  0.76  0.94  0.01  1.0
  Cu  Cu10  1  0.82  0.85  0.85  1.0

Tb Tb Tb Cu Cu Cu Cu Si Si Si Si