data_[Na2Pm1H6O6]
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
  H  2.2000  0.2500  0.0000
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P-31m]
_cell_length_a [6.2823]
_cell_length_b [6.2823]
_cell_length_c [19.3349]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [162]
_chemical_formula_structural [Na2Pm(HO)6]
_chemical_formula_sum '[Na2 Pm1 H6 O6]'
_cell_volume [660.8539]
_cell_formula_units_Z [1]
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  0.3333  0.6667  0.5000  1
  Pm  Pm1  1  0.0000  0.0000  0.5000  1
  H  H2  6  0.0000  0.3462  0.6121  1
  O  O3  6  0.0000  0.3195  0.5627  1
]