data_[Mg4Tl4Ag4S8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Tl  1.6200  1.9000  1.3325
  Ag  1.9300  1.6000  1.0867
  S  2.5800  1.0000  0.8800
]
_symmetry_space_group_name_H-M [Cmme]
_cell_length_a [6.1772]
_cell_length_b [13.4916]
_cell_length_c [6.1312]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [67]
_chemical_formula_structural [MgTlAgS2]
_chemical_formula_sum '[Mg4 Tl4 Ag4 S8]'
_cell_volume [510.9796]
_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
[
  Mg  Mg0  4  0.2500  0.0000  0.5000  1.0
  Tl  Tl1  4  0.0000  0.2500  0.7363  1.0
  Ag  Ag2  4  0.0000  0.0000  0.0000  1.0
  S  S3  8  0.0000  0.1122  0.3027  1.0
]