data_[Tb2Y2Si4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Y  1.2200  1.8000  1.0400
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [Pmc2_1]
_cell_length_a [3.8620]
_cell_length_b [5.7057]
_cell_length_c [7.9318]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [TbYSi2]
_chemical_formula_sum '[Tb2 Y2 Si4]'
_cell_volume [174.7832]
_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  2  0.5000  0.3653  0.3195  1.0
  Y  Y1  2  0.0000  0.1347  0.6804  1.0
  Si  Si2  2  0.0000  0.3778  0.0377  1.0
  Si  Si3  2  0.5000  0.1222  0.9624  1.0
]