data_[Tb4Er8Si8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Er  1.2400  1.7500  1.0300
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [12.1007]
_cell_length_b [4.3330]
_cell_length_c [10.1773]
_cell_angle_alpha [90.0000]
_cell_angle_beta [117.4081]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Tb(ErSi)2]
_chemical_formula_sum '[Tb4 Er8 Si8]'
_cell_volume [473.7219]
_cell_formula_units_Z [4]
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  4  0.2169  0.0000  0.3532  1
  Er  Er1  4  0.0161  0.5000  0.6863  1
  Er  Er2  4  0.1867  0.5000  0.0859  1
  Si  Si3  4  0.0336  0.0000  0.9009  1
  Si  Si4  4  0.1123  0.0000  0.5621  1
]