data_[Na2Tl2Ag2S4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  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 [P2/c]
_cell_length_a [6.9683]
_cell_length_b [5.0753]
_cell_length_c [7.6392]
_cell_angle_alpha [90.0000]
_cell_angle_beta [111.0590]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [13]
_chemical_formula_structural [NaTlAgS2]
_chemical_formula_sum '[Na2 Tl2 Ag2 S4]'
_cell_volume [252.1233]
_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
[
  Na  Na0  2  0.5000  0.2449  0.2500  1
  Tl  Tl1  2  0.0000  0.4243  0.7500  1
  Ag  Ag2  2  0.0000  0.0000  0.0000  1
  S  S3  4  0.2801  0.2810  0.5095  1
]