data_[Pm4Ag4Se4O4]
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
  Se  2.5500  1.1500  1.0133
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [6.3094]
_cell_length_b [7.4615]
_cell_length_c [6.7657]
_cell_angle_alpha [90.0000]
_cell_angle_beta [101.8875]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [PmAgSeO]
_chemical_formula_sum '[Pm4 Ag4 Se4 O4]'
_cell_volume [311.6779]
_cell_formula_units_Z [4]
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  4  0.1005  0.6098  0.7336  1
  Ag  Ag1  4  0.4196  0.2135  0.9943  1
  Se  Se2  4  0.3395  0.5397  0.1866  1
  O  O3  4  0.0481  0.1736  0.0898  1
]