data_[Pm8Be2Sb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Be  1.5700  1.0500  0.5900
  Sb  2.0500  1.4500  0.8300
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [5.0589]
_cell_length_b [5.0589]
_cell_length_c [16.5353]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [Pm4BeSb2]
_chemical_formula_sum '[Pm8 Be2 Sb4]'
_cell_volume [423.1861]
_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
[
  Pm  Pm0  4  0.0000  0.0000  0.1708  1
  Pm  Pm1  4  0.0000  0.5000  0.0000  1
  Be  Be2  2  0.0000  0.0000  0.0000  1
  Sb  Sb3  4  0.0000  0.0000  0.3636  1
]