data_[Sr4Ag4Se4O4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  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_12_12_1]
_cell_length_a [6.4290]
_cell_length_b [6.6988]
_cell_length_c [7.3983]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [19]
_chemical_formula_structural [SrAgSeO]
_chemical_formula_sum '[Sr4 Ag4 Se4 O4]'
_cell_volume [318.6222]
_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
[
  Sr  Sr0  4  0.1733  0.0791  0.9382  1
  Ag  Ag1  4  0.2099  0.5734  0.8437  1
  Se  Se2  4  0.0526  0.6902  0.1633  1
  O  O3  4  0.0532  0.8567  0.6742  1
]