data_[Pm9Ag12As3O24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Ag  1.9300  1.6000  1.0867
  As  2.1800  1.1500  0.6600
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [7.1742]
_cell_length_b [7.1742]
_cell_length_c [18.8695]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [Pm3Ag4AsO8]
_chemical_formula_sum '[Pm9 Ag12 As3 O24]'
_cell_volume [841.0881]
_cell_formula_units_Z [3]
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  9  0.0000  0.5000  0.5000  1
  Ag  Ag1  9  0.0000  0.5000  0.0000  1
  Ag  Ag2  3  0.0000  0.0000  0.0000  1
  As  As3  3  -0.0000  -0.0000  0.5000  1
  O  O4  18  0.0204  0.5102  0.1105  1
  O  O5  6  0.0000  0.0000  0.1101  1
]