data_[Eu20Si12H4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Eu  1.2000  1.8500  1.1985
  Si  1.9000  1.1000  0.5400
  H  2.2000  0.2500  0.0000
]
_symmetry_space_group_name_H-M [I4/mcm]
_cell_length_a [7.8327]
_cell_length_b [7.8327]
_cell_length_c [14.6408]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [140]
_chemical_formula_structural [Eu5Si3H]
_chemical_formula_sum '[Eu20 Si12 H4]'
_cell_volume [898.2302]
_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
[
  Eu  Eu0  16  0.1715  0.3285  0.3513  1
  Eu  Eu1  4  0.0000  0.0000  0.0000  1
  Si  Si2  8  0.1098  0.3902  0.0000  1
  Si  Si3  4  0.0000  0.0000  0.2500  1
  H  H4  4  0.0000  0.5000  0.2500  1
]