data_[Na2Pm4I16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Pm  1.1300  1.8500  1.1100
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [20.0878]
_cell_length_b [9.4181]
_cell_length_c [6.2888]
_cell_angle_alpha [90.0000]
_cell_angle_beta [97.5505]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na(PmI4)2]
_chemical_formula_sum '[Na2 Pm4 I16]'
_cell_volume [1179.4635]
_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
  Pm  Pm1  4  0.1674  0.0000  0.7436  1
  I  I2  8  0.0727  0.2457  0.7378  1
  I  I3  4  0.1637  0.0000  0.2483  1
  I  I4  4  0.1838  0.5000  0.1964  1
]