data_[Na4Sr2Pm2F16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Sr  0.9500  2.0000  1.3200
  Pm  1.1300  1.8500  1.1100
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [I-4m2]
_cell_length_a [5.6366]
_cell_length_b [5.6366]
_cell_length_c [11.5221]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [119]
_chemical_formula_structural [Na2SrPmF8]
_chemical_formula_sum '[Na4 Sr2 Pm2 F16]'
_cell_volume [366.0664]
_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
[
  Na  Na0  2  0.0000  0.0000  0.0000  1
  Na  Na1  2  0.0000  0.5000  0.2500  1
  Sr  Sr2  2  0.0000  0.0000  0.5000  1
  Pm  Pm3  2  0.0000  0.5000  0.7500  1
  F  F4  16  0.2397  0.2583  0.8699  1
]