data_[Er8Si20Ni12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Si  1.9000  1.1000  0.5400
  Ni  1.9100  1.3500  0.7400
]
_symmetry_space_group_name_H-M [Ibam]
_cell_length_a [9.6071]
_cell_length_b [11.0785]
_cell_length_c [5.6391]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [72]
_chemical_formula_structural [Er2Si5Ni3]
_chemical_formula_sum '[Er8 Si20 Ni12]'
_cell_volume [600.1860]
_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
[
  Er  Er0  8  0.2360  0.3687  0.5000  1.0
  Si  Si1  8  0.0000  0.2336  0.2500  1.0
  Si  Si2  8  0.1525  0.1075  0.5000  1.0
  Si  Si3  4  0.0000  0.5000  0.2500  1.0
  Ni  Ni4  8  0.1138  0.3655  0.0000  1.0
  Ni  Ni5  4  0.0000  0.0000  0.2500  1.0
]