data_[Ag2Pb2Au2Se4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ag  1.9300  1.6000  1.0867
  Pb  2.3300  1.8000  1.1225
  Au  2.5400  1.3500  1.0700
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P2/c]
_cell_length_a [7.2367]
_cell_length_b [4.7613]
_cell_length_c [7.7275]
_cell_angle_alpha [90.0000]
_cell_angle_beta [100.8862]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [13]
_chemical_formula_structural [AgPbAuSe2]
_chemical_formula_sum '[Ag2 Pb2 Au2 Se4]'
_cell_volume [261.4689]
_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
[
  Ag  Ag0  2  0.0000  0.4953  0.2500  1.0
  Pb  Pb1  2  0.5000  0.1406  0.7500  1.0
  Au  Au2  2  0.0000  0.0000  0.0000  1.0
  Se  Se3  4  0.2757  0.3155  0.0394  1.0
]