data_[Ba4Ag4Pb8Se16]
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
  Pb  2.3300  1.8000  1.1225
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [4.4609]
_cell_length_b [14.3740]
_cell_length_c [14.9673]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [BaAg(PbSe2)2]
_chemical_formula_sum '[Ba4 Ag4 Pb8 Se16]'
_cell_volume [959.7291]
_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
[
  Ba  Ba0  4  0.0000  0.1154  0.7500  1.0
  Ag  Ag1  4  0.0000  0.1495  0.2500  1.0
  Pb  Pb2  8  0.0000  0.3691  0.5551  1.0
  Se  Se3  8  0.0000  0.2748  0.1192  1.0
  Se  Se4  4  0.0000  0.0000  0.0000  1.0
  Se  Se5  4  0.0000  0.4460  0.7500  1.0
]