data_[Ba2Ag2P2Se8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ba  0.8900  2.1500  1.4900
  Ag  1.9300  1.6000  1.0867
  P  2.1900  1.0000  0.5500
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [I-4]
_cell_length_a [7.5491]
_cell_length_b [7.5491]
_cell_length_c [8.3598]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [82]
_chemical_formula_structural [BaAgPSe4]
_chemical_formula_sum '[Ba2 Ag2 P2 Se8]'
_cell_volume [476.4151]
_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
[
  Ba  Ba0  2  0.0000  0.0000  0.0000  1
  Ag  Ag1  2  0.0000  0.0000  0.5000  1
  P  P2  2  0.0000  0.5000  0.7500  1
  Se  Se3  8  0.1499  0.2834  0.6256  1
]