data_[Cs1Pm2Ag1Br8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cs  0.7900  2.6000  1.8100
  Pm  1.1300  1.8500  1.1100
  Ag  1.9300  1.6000  1.0867
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [7.7915]
_cell_length_b [8.7860]
_cell_length_c [8.8731]
_cell_angle_alpha [93.8409]
_cell_angle_beta [115.5557]
_cell_angle_gamma [95.4830]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [CsPm2AgBr8]
_chemical_formula_sum '[Cs1 Pm2 Ag1 Br8]'
_cell_volume [541.5144]
_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
[
  Cs  Cs0  1  0.0000  0.5000  0.0000  1
  Pm  Pm1  2  0.4909  0.7561  0.5242  1
  Ag  Ag2  1  0.0000  0.0000  0.0000  1
  Br  Br3  2  0.0863  0.1889  0.2560  1
  Br  Br4  2  0.0970  0.7232  0.3794  1
  Br  Br5  2  0.4809  0.4873  0.7061  1
  Br  Br6  2  0.4901  0.0412  0.7162  1
]