data_[Rb4Pm4Fe2O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Pm  1.1300  1.8500  1.1100
  Fe  1.8300  1.4000  0.8525
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [5.9494]
_cell_length_b [10.2663]
_cell_length_c [6.8894]
_cell_angle_alpha [90.0000]
_cell_angle_beta [104.3161]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Pm2FeO6]
_chemical_formula_sum '[Rb4 Pm4 Fe2 O12]'
_cell_volume [407.7306]
_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
[
  Rb  Rb0  4  0.0000  0.1617  0.0000  1
  Pm  Pm1  4  0.0000  0.3326  0.5000  1
  Fe  Fe2  2  0.0000  0.0000  0.5000  1
  O  O3  8  0.1989  0.1540  0.6665  1
  O  O4  4  0.2269  0.0000  0.3423  1
]