data_[Na2Pr4Cu2O10]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Pr  1.1300  1.8500  1.0600
  Cu  1.9000  1.3500  0.8200
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P4/mbm]
_cell_length_a [6.8173]
_cell_length_b [6.8173]
_cell_length_c [5.6369]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [127]
_chemical_formula_structural [NaPr2CuO5]
_chemical_formula_sum '[Na2 Pr4 Cu2 O10]'
_cell_volume [261.9832]
_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  1.0
  Pr  Pr1  4  0.1779  0.6779  0.5000  1.0
  Cu  Cu2  2  0.0000  0.5000  0.0000  1.0
  O  O3  8  0.1305  0.3695  0.2378  1.0
  O  O4  2  0.0000  0.0000  0.5000  1.0
]