data_[Na6Ac4Pm2O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ac  1.1000  1.9500  1.2600
  Pm  1.1300  1.8500  1.1100
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [6.4417]
_cell_length_b [11.2387]
_cell_length_c [6.0515]
_cell_angle_alpha [90.0000]
_cell_angle_beta [110.0689]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na3Ac2PmO6]
_chemical_formula_sum '[Na6 Ac4 Pm2 O12]'
_cell_volume [411.5042]
_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  4  0.0000  0.1506  0.5000  1
  Na  Na1  2  0.0000  0.5000  0.5000  1
  Ac  Ac2  4  0.0000  0.3325  0.0000  1
  Pm  Pm3  2  0.0000  0.0000  0.0000  1
  O  O4  8  0.2290  0.1586  0.2174  1
  O  O5  4  0.2490  0.0000  0.7818  1
]