data_[Ag8Ge4Se8S4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ag  1.9300  1.6000  1.0867
  Ge  2.0100  1.2500  0.7700
  Se  2.5500  1.1500  1.0133
  S  2.5800  1.0000  0.8800
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [12.4571]
_cell_length_b [7.2532]
_cell_length_c [6.6906]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Ag2GeSe2S]
_chemical_formula_sum '[Ag8 Ge4 Se8 S4]'
_cell_volume [604.5200]
_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
[
  Ag  Ag0  8  0.1463  0.3389  0.6795  1
  Ge  Ge1  4  0.0000  0.1562  0.2006  1
  Se  Se2  8  0.1601  0.3094  0.2867  1
  S  S3  4  0.0000  0.1378  0.8403  1
]