data_[Pm2Sn2Br2O4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Sn  1.9600  1.4500  0.8300
  Br  2.9600  1.1500  0.8825
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [7.0661]
_cell_length_b [4.0178]
_cell_length_c [8.2745]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.0983]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [PmSnBrO2]
_chemical_formula_sum '[Pm2 Sn2 Br2 O4]'
_cell_volume [224.5294]
_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
[
  Pm  Pm0  2  0.3387  0.2500  0.5911  1
  Sn  Sn1  2  0.3315  0.2500  0.0729  1
  Br  Br2  2  0.0528  0.7500  0.6997  1
  O  O3  2  0.4948  0.2500  0.3765  1
  O  O4  2  0.4982  0.2500  0.8805  1
]